Metallized safety film for new energy automobile capacitor

Abstract

The utility model provides a metalized safety film for a capacitor of a new energy automobile, a base film is provided with a metal layer, two ends of the metal layer are respectively provided with a margin area, the metal layer comprises an alloy thickening area and a metal area, the metal area is provided with a fuse, the fuse is of a step-shaped structure, and the margin area is provided with a lead. Wherein the end part, close to the marginal area, of one fuse extends towards the marginal area array, and the end part, away from the marginal area, of the other fuse extends towards the marginal area array. By changing the pattern structure of the fuse of the automobile safety film, the loss of an automobile circuit system when problems occur is reduced, the safety of an automobile circuit in the using process is improved, the circuit can be disconnected in time when a capacitor is overloaded due to reliable fusing of the fuse, the capacitor is effectively prevented from being overheated, fired or exploded, and the service life of the automobile safety film is prolonged. The safety of vehicle passengers is protected; the transition area and the metal area are arranged on the two sides of the alloy thickening area, distribution of current on the metallized film can be effectively optimized, hot spots generated due to current concentration are reduced, and the overheating risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of safety films for automobiles, and particularly relates to a metallized safety film for a new energy vehicle capacitor. Background Art

[0002] Capacitors for new energy vehicles are key components in the vehicle electronic system. They are mainly used for functions such as AC-DC conversion and energy storage. To ensure that the circuit can be protected from damage when the capacitor is abnormal and prevent potential safety problems, these capacitors are usually equipped with integrated fuses. The main function of the fuse is to melt when the current exceeds a specific threshold, thereby disconnecting the circuit, preventing the capacitor from overloading and avoiding possible thermal runaway or explosion.

[0003] However, in actual applications, the fuses of automotive safety metallized film capacitors cannot normally melt in some cases. This failure may be caused by various factors, including improper fuse design, unreasonable material selection, defects in the manufacturing process, or performance degradation of the capacitor under extreme working conditions. When the fuse cannot burn out under overload conditions, it cannot play the expected explosion-proof role, which may lead to overheating, fire or even explosion of the capacitor, posing a serious threat to the safety of vehicle occupants. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a metallized safety film for a new energy vehicle capacitor, which can automatically disconnect when problems occur during the use of the metallized safety film for a new energy vehicle capacitor, minimize the problems, reduce the impact when problems occur, extend the service life of the vehicle capacitor, reduce the losses caused by problems with the vehicle capacitor, and extend the service life of the capacitor, etc.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Provide a metallized safety film for a new energy vehicle capacitor, including a base film, a metal layer is provided on the base film, and margin areas are respectively provided at both ends of the metal layer. The metal layer includes an alloy thickening area and metal areas arranged on both sides of the alloy thickening area. A transition area is arranged between the alloy thickening area and the metal areas. Fuses are arranged on the metal areas. There are two groups of fuses, and they are both in a stepped structure. One end of one of the fuses close to the margin area extends in an array towards the margin area, and one end of the other fuse far from the margin area extends in an array towards the margin area.

[0007] Preferably, the thickness of the alloy thickened area is greater than that of the metal area, so that a stepped structure is adopted between the alloy thickened area and the metal area, and the transition area adopts a slope structure for connecting the alloy thickened area and the metal area.

[0008] Preferably, one edge of the alloy thickened area gradually decreases towards the metal area.

[0009] Preferably, the alloy thickened area is a zinc-aluminum alloy thickened area.

[0010] Preferably, the metal area is an aluminum metal area.

[0011] Preferably, the base film is an OPP film.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] A metallized safety film for a new energy vehicle capacitor provided by the present utility model improves the safety during the use of the vehicle capacitor by changing the fuse pattern structure of the metallized safety film for a new energy vehicle capacitor. Due to the reliable melting of the fuse, it effectively prevents the capacitor from overheating, catching fire or exploding, protecting the safety of vehicle occupants; by arranging transition areas and metal areas on both sides of the alloy thickened area, the current distribution on the metallized film can be effectively optimized, reducing hot spots caused by current concentration and lowering the risk of overheating. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is an enlarged structural diagram of the present utility model;

[0017] Figure 3 It is a plating structure diagram of the present utility model.

[0018] In the figure: 1. Base film; 2. Metal layer; 3. Margin area; 4. Alloy thickened area; 5. Metal area; 6. Transition area; 7. Fuse. Detailed Embodiments

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0022] The following will describe Figures 1 to 3 a metallized safety film for a new energy vehicle capacitor of the present utility model.

[0023] As Figures 1 to 3 shown, the present utility model provides a metallized safety film for a new energy vehicle capacitor, which includes a base film 1. The base film 1 is an OPP film. A metal layer 2 is provided on the base film 1, and leaving-edge areas 3 are respectively provided at both ends of the metal layer 2. The metal layer 2 includes an alloy thickening area 4 and metal areas 5 arranged on both sides of the alloy thickening area 4. The metal areas 5 are aluminum metal areas 5, and the alloy thickening area 4 is a zinc-aluminum alloy thickening area 4. A transition area 6 is provided between the alloy thickening area 4 and the metal areas 5. Fuses 7 are provided on the metal areas 5. There are two groups of fuses 7, and they are both in a stepped structure. One end of one fuse 7 close to the leaving-edge area 3 extends in an array towards the leaving-edge area 3, and the end of the other fuse 7 far from the leaving-edge area 3 extends in an array towards the leaving-edge area 3.

[0024] The metallized film for automobiles is a plastic film that, under high vacuum conditions, melts, evaporates, and precipitates high-purity aluminum, zinc, gold, copper, or zinc-aluminum composite metal onto the base film 1 to form an extremely thin metal layer 2 on the surface of the base film 1. Then, a printing pattern is applied to the metallized film through a safety film printing sleeve. In this utility model, by modifying the shape and size of the pattern and using it in conjunction with the safety film oil roller cover plate, the clarity of the printed pattern of the product is controlled by observing and adjusting the temperature of the safety film through on-line monitoring, and the size of the fuse 7 is controlled by controlling the pressure on the left and right of the printing sleeve to ensure that the sizes of the fuses 7 on the left, middle, and right are consistent.

[0025] Preferably, the thickness of the alloy thickening area 4 is greater than the thickness of the metal area 5, so that a stepped structure is adopted between the alloy thickening area 4 and the metal area 5, and the transition area 6 adopts a slope structure for connecting the alloy thickening area 4 and the metal area 5.

[0026] Preferably, one edge of the alloy thickening area 4 gradually decreases towards the metal area 5.

[0027] Preferably, the precision of the fuse 7 is within the range of ±0.01 mm.

[0028] By changing the pattern structure of the fuse 7 of the metallized safety film for new energy vehicle capacitors, the loss when problems occur in the vehicle capacitor system is reduced, and the safety during the use of the vehicle capacitor is improved. Due to the reliable fusing of the fuse 7, the circuit can be disconnected in time when the capacitor is overloaded, effectively preventing the capacitor from overheating, catching fire or exploding, and protecting the safety of vehicle occupants; by arranging the transition area 6 and the metal area 5 on both sides of the alloy thickening area 4, the distribution of current on the metallized film can be effectively optimized, reducing the hot spots generated by current concentration and lowering the risk of overheating.

[0029] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A metallized safety film for a new energy vehicle capacitor, characterized in that It includes a base film, a metal layer is provided on the base film, and margin areas are respectively provided at both ends of the metal layer. The metal layer includes an alloy thickening area and metal areas provided on both sides of the alloy thickening area. A transition area is provided between the alloy thickening area and the metal areas. A fuse is provided on the metal areas. There are two groups of fuses, and they are both in a stepped structure. The end of one of the fuses close to the margin area extends in an array towards the margin area, and the end of the other fuse far from the margin area extends in an array towards the margin area.

2. The metallized safety film for a new energy vehicle capacitor according to claim 1, wherein The thickness of the alloy thickening area is greater than that of the metal areas, so that a stepped structure is adopted between the alloy thickening area and the metal areas. The transition area adopts a slope structure for connecting the alloy thickening area and the metal areas.

3. The metallized safety film for a new energy vehicle capacitor according to claim 1, characterized in that, One edge of the alloy thickening area gradually decreases towards the metal areas.

4. A metallized safety film for a new energy vehicle capacitor according to claim 1, characterized in that, The alloy thickening area is a zinc-aluminum alloy thickening area.

5. A metallized safety film for a new energy vehicle capacitor according to claim 1, characterized in that, The metal areas are aluminum metal areas.

6. The metallized safety film for a new energy vehicle capacitor according to claim 1, wherein The base film is an OPP film.

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