Winding polymer tantalum capacitor with high safety

Abstract

The utility model relates to a winding polymer tantalum capacitor with high safety, which comprises a protective shell, a core body is arranged in the protective shell, the core body comprises positive electrode electrolytic paper and a dipping layer, the positive electrode electrolytic paper is arranged in the protective shell, the dipping layer is arranged outside the positive electrode electrolytic paper, and the dipping layer is arranged outside the dipping layer. And a high-molecular cathode polymerization layer is arranged on the outer surface of the impregnation layer. According to the winding polymer tantalum capacitor with high safety, external vibration transmitted to the interior of the capacitor can be preliminarily reduced through the protection shell, and the vibration transmitted to the interior of the capacitor from the outside is secondarily reduced through the cooperation of the damping ribs and the sealing rubber plugs; the conditions of short circuit and charge leakage of equipment can be prevented through the material of the internal positive electrolytic paper, and the polycarbonate of the impregnation layer can provide stable electrical performance under a high-temperature condition, so that the purposes of keeping high-stability electrical performance at a high temperature and preventing vibration from damaging the internal structure are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a wound polymer tantalum capacitor with high safety. Background Art

[0002] The wound polymer tantalum capacitor is a capacitor with special structure and performance. It uses a winding method to stack and wind the positive electrode expanded tantalum foil, the negative electrode aluminum foil and the electrolytic paper in sequence to form a core. The advantages of the wound polymer tantalum capacitor also include high capacitance density, small volume, high energy density and good conductivity.

[0003] After searching, it was found that a wound polymer tantalum capacitor was disclosed in a utility model patent with Chinese patent publication number CN208368356U. The wound polymer tantalum capacitor in the utility model patent adopts organic polymer materials as the main cathode materials to replace the traditional electrolyte. Compared with the traditional tantalum capacitor, the wound polymer laminated tantalum capacitor will not dry up and explode, and will not cause open flames if short-circuited. It has safer and more reliable performance and does not burn. At the same time, it has a smaller equivalent series resistance and better temperature adaptability. However, the internal material of the wound polymer tantalum capacitor does not have the function of shock absorption and impact protection. When the device is used in an external device, the vibration of the external device may be transmitted to the device, causing damage to the inside of the capacitor. In addition, the organic polymer material does not have the function of high temperature resistance. In a high temperature environment, thermal decomposition or performance degradation may occur, which may affect the long-term stability and reliability of the wound polymer tantalum capacitor, and the manufacturing cost is relatively high. Therefore, a wound polymer tantalum capacitor with high safety is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a highly safe wound polymer tantalum capacitor with the advantages of high temperature resistance and vibration resistance, solving the problem that ordinary wound polymer tantalum capacitors are not resistant to high temperatures and do not have shock absorption.

[0005] To achieve the above object, the utility model provides the following technical solution: a wound polymer tantalum capacitor with high safety, comprising a protective shell, a core body is arranged inside the protective shell, a shock-absorbing rib is fixedly installed inside the protective shell, and a sealing rubber plug is fixedly arranged inside the protective shell;

[0006] The core body includes positive electrode electrolytic paper, an impregnation layer, a polymer cathode polymerization layer, a positive connecting piece terminal, a positive electrode lead, negative electrode electrolytic paper, a negative connecting piece terminal and a negative electrode lead; the positive electrode electrolytic paper is arranged inside the protective shell; the impregnation layer is arranged outside the positive electrode electrolytic paper; the polymer cathode polymerization layer is arranged on the outer surface of the impregnation layer; the positive connecting piece terminal is fixedly installed on the top of the polymer cathode polymerization layer; the positive electrode lead is fixedly installed on the top of the positive connecting piece terminal; the negative electrode electrolytic paper is arranged outside the positive electrode electrolytic paper; the negative connecting piece terminal is fixedly installed on the top of the polymer cathode polymerization layer; and the negative electrode lead is fixedly installed on the top of the negative connecting piece terminal.

[0007] Furthermore, the material of the positive electrode electrolytic paper is a reinforced polyester film, the material of the impregnation layer is polycarbonate, and the material of the positive connecting piece terminal and the negative connecting piece terminal are both copper alloy.

[0008] Furthermore, a positive electrode expanded hole tantalum foil is fixedly installed on the front side of the positive electrode electrolytic paper, and the front side of the positive electrode expanded hole tantalum foil is fixedly connected to the back side of the impregnation layer.

[0009] Furthermore, there are two polymer cathode polymer layers, the top of one polymer cathode polymer layer is fixedly connected to the bottom of the positive connecting terminal, and the top of another polymer cathode polymer layer is fixedly connected to the bottom of the negative connecting terminal.

[0010] Furthermore, a negative electrode foil is arranged on the front of the negative electrode electrolytic paper, wherein one of the polymer cathode polymer layers is located on the front of the impregnation layer, and the other polymer cathode polymer layer is located on the front of the negative electrode foil.

[0011] Furthermore, the top of the positive electrode lead and the top of the negative electrode lead both penetrate the bottom of the sealing rubber plug and extend to the outside of the protective shell.

[0012] Beneficial Effects

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This highly safe wound polymer tantalum capacitor can initially reduce the transmission of external vibrations to the interior of the device through a protective shell, and then cooperate with shock-absorbing ribs and sealing plugs to secondary reduce the vibrations transmitted from the outside to the internal device. The internal positive electrolytic paper material can prevent the equipment from short circuiting and charge leakage. At the same time, the reinforced polyester film of the positive electrolytic paper can also play an auxiliary shock-absorbing effect, and the polycarbonate impregnated layer can provide stable electrical properties under high temperature conditions, thereby achieving the purpose of maintaining highly stable electrical properties under high temperature conditions and preventing external vibrations from damaging the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0016] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the partial winding of the core of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of a part of the core of the utility model.

[0019] In the figure: 1. protective shell; 2. core body; 201. positive electrode electrolytic paper; 202. impregnation layer; 203. polymer cathode polymerization layer; 204. positive connecting piece terminal; 205. positive electrode lead; 206. negative electrode electrolytic paper; 207. negative connecting piece terminal; 208. negative electrode lead; 3. shock absorbing ribs; 4. sealing rubber plug. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 A wound polymer tantalum capacitor with high safety, comprising a protective shell 1, a core 2 is arranged inside the protective shell 1, a shock-absorbing rib 3 is fixedly installed inside the protective shell 1, and a sealing rubber plug 4 is fixedly arranged inside the protective shell 1;

[0022] The core 2 includes a positive electrode electrolytic paper 201, an impregnation layer 202, a polymer cathode polymerization layer 203, a positive connecting piece terminal 204, a positive electrode lead 205, a negative electrode electrolytic paper 206, a negative connecting piece terminal 207 and a negative electrode lead 208. The positive electrode electrolytic paper 201 is arranged inside the protective shell 1, the impregnation layer 202 is arranged outside the positive electrode electrolytic paper 201, the polymer cathode polymerization layer 203 is arranged on the outer surface of the impregnation layer 202, the positive connecting piece terminal 204 is fixedly installed on the top of the polymer cathode polymerization layer 203, the positive electrode lead 205 is fixedly installed on the top of the positive connecting piece terminal 204, the negative electrode electrolytic paper 206 is arranged outside the positive electrode electrolytic paper 201, the negative connecting piece terminal 207 is fixedly installed on the top of the polymer cathode polymerization layer 203, and the negative electrode lead 208 is fixedly installed on the top of the negative connecting piece terminal 207.

[0023] Specifically, Figure 4As shown, during the winding process, the positive electrode expanded tantalum foil, the negative electrode aluminum foil and the electrolytic paper are stacked and wound in sequence to form a core 2. The negative electrode aluminum foil is also subjected to a polymer cathode polymerization treatment to form a polymer cathode polymerization layer 203, which further improves the performance of the capacitor. Finally, the core 2 is wrapped in a protective shell 1 to form a complete capacitor.

[0024] Specifically, Figure 1 As shown, the protective shell 1 is made of stainless steel, which has high high temperature resistance and can maintain structural stability in high temperature environments. At the same time, it also has good mechanical strength and toughness, and can provide a certain shock absorption effect. Stainless steel also has good corrosion resistance and is suitable for various harsh environments.

[0025] Specifically, Figure 2 As shown, the material of the shock-absorbing rib 3 and the sealing plug 4 is silicone, which is a highly elastic material with good shock-absorbing and buffering properties. It also has excellent high temperature resistance, chemical stability and electrical properties, and is suitable for shock-absorbing design of electronic components such as capacitors.

[0026] Specifically, Figure 4 As shown, the enhanced polyester film can improve its impact resistance by changing the manufacturing process of the polyester film or adding a reinforcing agent. This enhanced polyester film, as the base material of electrolytic paper, can effectively resist external impact while retaining its original insulating properties.

[0027] Specifically, Figure 4 As shown, polycarbonate is an amorphous, tasteless, odorless, non-toxic and transparent thermoplastic polymer with excellent mechanical, thermal and electrical comprehensive properties, especially impact resistance, good toughness, small creep and stable product size.

[0028] Specifically, Figure 4 As shown, the positive connecting piece terminal 204 and the negative connecting piece terminal 207 are configured as copper alloy in order to maintain its excellent electrical conductivity and other metal mechanical properties, such as strength and corrosion resistance, under high temperature conditions.

[0029] When implementing, follow these steps:

[0030] 1) First, place the core 2 inside the protective shell 1, and then install the sealing plug 4 into the protective shell 1;

[0031] 2) Then the device is connected to an external device, and the protective shell 1 performs preliminary shock absorption on the external vibration to protect the stability of the internal device;

[0032] 3) The vibration impact passing through the protective shell 1 is reduced for a second time by the shock-absorbing ribs 3 and the sealing rubber plug 4;

[0033] 4) Finally, the positive electrode electrolytic paper 201 and the impregnation layer 202 are used to assist in reducing vibration and impact, while ensuring that the device can maintain stable electrical properties even at high temperatures.

[0034] In summary, the highly safe wound polymer tantalum capacitor can initially reduce the external vibration transmitted to the inside of the device through the protective shell 1, and then cooperate with the shock-absorbing ribs 3 and the sealing plug 4 to perform secondary reduction on the vibration transmitted from the outside to the internal device. The material of the internal positive electrode electrolytic paper 201 can prevent the equipment from short circuiting and charge leakage. At the same time, the reinforced polyester film of the positive electrode electrolytic paper 201 can also play an auxiliary shock-absorbing effect, and the polycarbonate of the impregnation layer 202 can provide stable electrical performance under high temperature conditions, thereby achieving the purpose of maintaining highly stable electrical performance under high temperature conditions and preventing external vibration from damaging the internal structure.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wound polymer tantalum capacitor with high safety, comprising a protective shell (1), characterized in that: A core body (2) is arranged inside the protective shell (1), a shock-absorbing rib (3) is fixedly installed inside the protective shell (1), and a sealing rubber plug (4) is fixedly arranged inside the protective shell (1); The core (2) comprises positive electrode electrolytic paper (201), an impregnation layer (202), a polymer cathode polymer layer (203), a positive connecting piece terminal (204), a positive electrode lead (205), a negative electrode electrolytic paper (206), a negative connecting piece terminal (207) and a negative electrode lead (208); the positive electrode electrolytic paper (201) is arranged inside the protective shell (1); the impregnation layer (202) is arranged outside the positive electrode electrolytic paper (201); the polymer cathode polymer layer (203) is arranged on the outer surface of the impregnation layer (202); A cathode polymer layer (203) is provided, a positive connecting piece terminal (204) is fixedly installed on the top of the polymer cathode polymer layer (203), a positive lead (205) is fixedly installed on the top of the positive connecting piece terminal (204), a negative electrolytic paper (206) is arranged outside the positive electrolytic paper (201), a negative connecting piece terminal (207) is fixedly installed on the top of the polymer cathode polymer layer (203), and a negative lead (208) is fixedly installed on the top of the negative connecting piece terminal (207).

2. A wound polymer tantalum capacitor with high safety according to claim 1, characterized in that: The material of the positive electrode electrolytic paper (201) is a reinforced polyester film, the material of the impregnation layer (202) is polycarbonate, and the material of the positive connecting piece terminal (204) and the negative connecting piece terminal (207) are both copper alloy.

3. The wound polymer tantalum capacitor with high safety according to claim 1, characterized in that: A positive electrode expanded hole tantalum foil is fixedly mounted on the front side of the positive electrode electrolytic paper (201), and the front side of the positive electrode expanded hole tantalum foil is fixedly connected to the back side of the impregnation layer (202).

4. The highly safe wound polymer tantalum capacitor according to claim 1, characterized in that: The number of the polymer cathode polymer layers (203) is two, the top of one polymer cathode polymer layer (203) is fixedly connected to the bottom of the positive connecting piece terminal (204), and the top of another polymer cathode polymer layer (203) is fixedly connected to the bottom of the negative connecting piece terminal (207).

5. The wound polymer tantalum capacitor with high safety according to claim 1, characterized in that: A negative electrode foil is arranged on the front of the negative electrode electrolytic paper (206), wherein one of the polymer cathode polymer layers (203) is located on the front of the impregnation layer (202), and another of the polymer cathode polymer layers (203) is located on the front of the negative electrode foil.

6. The highly safe wound polymer tantalum capacitor according to claim 1, characterized in that: The top of the positive electrode lead (205) and the top of the negative electrode lead (208) both penetrate the bottom of the sealing rubber plug (4) and extend to the outside of the protective shell (1).

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