Capacitor integrating temperature sensing and protection functions

Abstract

The utility model discloses a capacitor integrated with temperature sensing and protection functions, and particularly relates to the technical field of capacitors, the capacitor comprises a wrapping aluminum shell, an outer protection layer, an inner protection layer and buffer gel, the bottom of the wrapping aluminum shell is provided with a bottom cover, the outer protection layer is arranged in the inner cavity of the wrapping aluminum shell, the inner protection layer is arranged in the inner cavity of a middle layer, and the buffer gel is arranged in the inner cavity of the middle layer. Buffer gel is filled between the aluminum foil and the inner protective layer; according to the utility model, the buffer silica gel can be used as an isolating layer, so that the case is prevented from being abraded, scratched, damaged and the like due to direct contact and friction between the internal battery cell and the surfaces of other materials under the action of stress generated by collision and extrusion, the integrity of the physical structure of the battery cell is maintained, and the service life of the battery cell is prolonged. When the capacitor is subjected to high-strength extrusion, the protection structure protects precise parts such as the internal aluminum foil, the anode plate and the cathode plate from being damaged, and the extrusion resistance of the capacitor is greatly improved through the synergistic effect of the multi-layer structure.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and more specifically, to a capacitor with integrated temperature sensing and protection functions. Background Technology

[0002] Capacitors, also known as electrochemical capacitors, gold capacitors, and farad capacitors;

[0003] A search revealed that patent publication number CN113012936B discloses a capacitor with protective function, installed on the motherboard of an electronic product. The capacitor includes a protective cover and a capacitor. A connecting block for connection to the motherboard is located on the lower end of the protective cover. Symmetrically, through cavities are formed on both sides of the lower end of the protective cover, with sliders sliding within each cavity. Each slider contains a cutting wheel cavity. A rotating shaft and a cutting wheel are rotatably mounted on the upper and lower walls of the cutting wheel cavity, near the capacitor. A sliding assembly is provided in the protective cover, which drives the sliders to move and drive the rotating cutting wheel to cut the capacitor leads. Symmetrically, sleeve cavities are formed on both sides of the connecting block, with an internally threaded sleeve fixed within each cavity. A spline assembly is located inside the protective cover, above the internally threaded sleeve, and engages with the internally threaded sleeve to lock the protective cover and the connecting block together. This invention, by cutting the capacitor leads, can promptly isolate the capacitor, preventing it from continuing to operate after a malfunction. The inventors discovered the following problems with the existing technology during the development of this utility model:

[0004] Existing capacitors contain precision components such as electrodes, electrolytes, and separators. Aluminum foil, as an important component of the electrodes, is relatively soft and easily deformed or damaged when squeezed. This causes the cell to rub directly against the surfaces of other materials, which can easily lead to wear and affect the performance of the electrodes and the overall function of the capacitor.

[0005] Therefore, a capacitor integrating temperature sensing and protection functions is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a capacitor with integrated temperature sensing and protection functions to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a capacitor integrating temperature sensing and protection functions, comprising an aluminum shell, an outer protective layer, an inner protective layer, and a buffer gel. A bottom cover is installed at the bottom of the aluminum shell. The outer protective layer is installed in the inner cavity of the aluminum shell. An intermediate layer is formed in the inner cavity of the outer protective layer. The inner protective layer is disposed in the inner cavity of the intermediate layer. An aluminum foil is installed in the inner cavity of the inner protective layer. Electrolytic paper is installed on the surface of the aluminum foil.

[0008] A buffer gel is filled between the aluminum foil and the inner protective layer. An anode plate is installed on the left side of the inner cavity of the aluminum foil, and a cathode plate is installed on the right side of the inner cavity of the aluminum foil. A wire is provided at the upper end of both the anode plate and the cathode plate. A sealing cap is installed at the upper end of the inner cavity of the aluminum shell. A limit fixing piece is installed at the upper end of the sealing cap. An integrated temperature sensor is provided on the left side of the electrolytic paper.

[0009] Preferably, the outer protective layer, the intermediate layer, and the inner protective layer form a protective structure, and the intermediate layer is made of polyurethane foam.

[0010] Preferably, the buffer gel is made of silicone gel, and a gap is left between the aluminum foil and the sealing cap.

[0011] Preferably, the aluminum foil and the electrolytic paper are wound together in the same direction, and the inner cavity of the limiting and fixing piece has a cavity for the two sets of wires to pass through.

[0012] Preferably, the bottom ends of the two sets of wires pass through the inner cavities of the limiting and fixing piece, the sealing cap, and the aluminum foil in sequence, and are then connected to the anode piece and the cathode piece respectively.

[0013] Preferably, the anode plate and the cathode plate are arranged symmetrically, and the two sets of wires are arranged symmetrically.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. Compared with existing technologies, this capacitor with integrated temperature sensing and protection functions uses buffer silicone as an isolation layer to prevent the internal battery cell from directly contacting and rubbing against other material surfaces under the stress caused by collision and compression, which would lead to wear on the outer casing and prevent scratches, damage, etc., thus maintaining the integrity of the battery cell's physical structure.

[0016] 2. Compared with existing technologies, this capacitor with integrated temperature sensing and protection functions protects the internal precision components such as aluminum foil, anode plate, and cathode plate from damage when the capacitor is subjected to high-intensity compression. It prevents problems such as electrode deformation, breakage, or dielectric damage caused by compression. The synergistic effect of this multi-layer structure greatly improves the capacitor's ability to resist compression. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the orthographic structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the outer protective layer of this utility model.

[0020] Figure 4 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the diagram.

[0021] The attached diagram is labeled as follows: 1. Aluminum shell; 2. Outer protective layer; 3. Middle layer; 4. Inner protective layer; 5. Aluminum foil; 51. Electrolytic paper; 6. Buffer gel; 7. Sealing cap; 8. Anode plate; 9. Cathode plate; 10. Wire; 11. Bottom cover; 12. Limiting and fixing plate; 13. Integrated temperature sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] As attached Figures 1 to 4 The capacitor shown has integrated temperature sensing and protection functions, including an aluminum shell 1, an outer protective layer 2, an inner protective layer 4 and a buffer gel 6. A bottom cover 11 is installed at the bottom of the aluminum shell 1. The outer protective layer 2 is installed in the inner cavity of the aluminum shell 1. An intermediate layer 3 is opened in the inner cavity of the outer protective layer 2. The inner protective layer 4 is disposed in the inner cavity of the intermediate layer 3. An aluminum foil 5 is installed in the inner cavity of the inner protective layer 4. Electrolytic paper 51 is installed on the surface of the aluminum foil 5.

[0024] A buffer gel 6 is filled between the aluminum foil 5 and the inner protective layer 4. An anode plate 8 is installed on the left side of the inner cavity of the aluminum foil 5, and a cathode plate 9 is installed on the right side of the inner cavity of the aluminum foil 5. A wire 10 is provided at the upper end of both the anode plate 8 and the cathode plate 9. A sealing cap 7 is installed at the upper end of the inner cavity of the aluminum shell 1. A limit fixing piece 12 is installed at the upper end of the sealing cap 7. An integrated temperature sensor 13 is provided on the left side of the electrolytic paper 51.

[0025] Among them: the aluminum shell 1 provides mechanical support and physical protection for other components inside the capacitor; the outer protective layer 2 first bears the external extrusion pressure and transfers part of the pressure to the middle layer 3; the polyurethane foam of the middle layer 3 further absorbs and disperses the pressure through compression deformation, and then transfers the remaining pressure to the inner protective layer 4; the inner protective layer 4 buffers and protects the internal components; the synergistic effect of this multi-layer structure greatly improves the capacitor's ability to resist extrusion; the aluminum foil 5, as a key component of the capacitor, is the main carrier for storing charge; together with the cathode plate 9, anode plate 8, etc., it realizes the charge storage and release function of the capacitor and provides the required electrical energy for the circuit; the electrolytic paper 51 separates the anode plate 8 and the cathode plate 9 to prevent them from directly contacting and short-circuiting; at the same time, it has good insulation properties to ensure the stable electric field distribution inside the capacitor and ensure its normal operation; and it can adsorb the electrolyte, so that the electrolyte is evenly distributed between the anode plate 8 and the cathode plate 9, improving the ion conduction efficiency and thus enhancing the performance of the capacitor.

[0026] Buffer gel 6 is filled between aluminum foil 5 and inner protective layer 4. When the capacitor is subjected to vibration, collision or compression, it can effectively absorb and disperse stress, prevent friction between aluminum foil 5 and inner protective layer 4 due to relative movement, and protect the integrity of aluminum foil 5. Two sets of wires 10 connect the anode plate 8 and cathode plate 9 to the external circuit, so that the capacitor can be connected to the circuit and realize its various functions in the circuit. Sealing cap 7 and bottom cap 11 seal the upper and lower ends of the aluminum shell 1, respectively, to prevent external dust, moisture, impurities, etc. from entering the capacitor and avoid these substances from causing corrosion, short circuits and other adverse effects on the internal components, and ensure the cleanliness and stability of the internal environment of the capacitor. Limiting and fixing piece 12 limits and fixes the two sets of wires 10. Integrated temperature sensor 13 monitors the temperature change inside the capacitor in real time, providing accurate temperature data for users or related control systems so as to understand the working status of the capacitor in a timely manner. Example 2

[0027] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0028] In a preferred embodiment, the outer protective layer 2, the intermediate layer 3, and the inner protective layer 4 form a protective structure, and the intermediate layer 3 is made of polyurethane foam. Furthermore, the outer protective layer 2, as the outermost layer of the protective structure, provides the first line of defense for the capacitor. The polyurethane foam in the intermediate layer 3 has good flexibility and elasticity, and can be quickly compressed and deformed when the capacitor is subjected to vibration, collision, or compression, absorbing and dispersing a large amount of impact force, effectively reducing the stress transmitted to the inner protective layer 4 and internal aluminum foil 5 and other components, and protecting the internal structure of the capacitor from damage.

[0029] In a preferred embodiment, the buffer gel 6 is made of silicone gel, and a gap is left between the aluminum foil 5 and the sealing cap 7. Furthermore, the silicone gel has soft and elastic properties, which can effectively absorb and disperse stress when the capacitor is subjected to external impact or vibration, protecting the aluminum foil 5 and internal components such as the anode plate 8 and cathode plate 9. In addition, silicone gel is a good insulator, which can enhance the insulation effect inside the capacitor and prevent short circuits between the aluminum foil 5 and other components.

[0030] In a preferred embodiment, the aluminum foil 5 and the electrolytic paper 51 are wound together in the same direction, and the inner cavity of the limiting and fixing piece 12 has a cavity for the two sets of wires 10 to pass through. Furthermore, the winding of the aluminum foil 5 and the electrolytic paper 51 together can maximize the contact area between the two, which can play the role of isolating and absorbing the electrolyte. The larger contact area is conducive to better interaction between the electrolyte and the aluminum foil 5, thereby improving the charge storage and release efficiency of the capacitor, and improving the capacitance and performance of the capacitor. The limiting and fixing piece 12 can play a certain role in fixing the wires 10, preventing the wires 10 from shaking or shifting inside the capacitor.

[0031] In a preferred embodiment, the bottom ends of the two sets of wires 10 pass through the inner cavities of the limiting fixing piece 12, the sealing cap 7, and the aluminum foil 5 in sequence, and are then connected to the anode piece 8 and the cathode piece 9 respectively; this enables the anode piece 8 and the cathode piece 9 to establish a reliable connection with the external circuit, thereby allowing the capacitor to be smoothly connected to the circuit, realize its function of storing and releasing charge, and ensure the normal operation of the entire circuit.

[0032] In a preferred embodiment, the anode plate 8 and the cathode plate 9 are symmetrically arranged, and the two sets of wires 10 are symmetrically arranged. Furthermore, the symmetrical arrangement of the anode plate 8 and the cathode plate 9 can make the electric field distribution inside the capacitor more uniform and symmetrical. The uniform electric field can avoid the electric field from being concentrated in certain areas and reduce the situation of excessively high local electric field strength. The symmetrical arrangement of the two sets of wires 10 can ensure that the electrical performance of the anode plate 8 and the cathode plate 9 is consistent with that of the external circuit.

[0033] The working process of this utility model is as follows: First, the protective structure composed of the outer protective layer 2, the intermediate layer 3, and the inner protective layer 4 provides good mechanical protection for the capacitor. The outer protective layer 2 first bears the external extrusion pressure, transferring part of the pressure to the intermediate layer 3. The polyurethane foam of the intermediate layer 3, with its good flexibility and elasticity, further absorbs and disperses the pressure through compression deformation, and then transfers the remaining pressure to the inner protective layer 4. The inner protective layer 4 then buffers and protects the internal components. This synergistic effect of the multi-layer structure greatly improves the capacitor's resistance to extrusion and protects the internal structure of the capacitor from damage. The buffer gel 6, made of silicone gel, is filled between the aluminum foil 5 and the inner protective layer 4. It has soft and elastic properties and can effectively absorb and disperse stress when the capacitor is subjected to vibration, collision, or extrusion, preventing stress buildup between the aluminum foil 5 and the inner protective layer 4. Friction generated by movement protects the integrity of aluminum foil 5. Silicone gel is a good insulator that can enhance the insulation effect inside the capacitor and prevent short circuits between aluminum foil 5 and other components. The sealing cap 7 and the bottom cap 11 seal the upper and lower ends of the aluminum shell 1 respectively to prevent external dust, moisture, impurities, etc. from entering the capacitor and avoid these substances from causing corrosion, short circuits, and other adverse effects on the internal components, thus ensuring the cleanliness and stability of the internal environment of the capacitor. The two sets of wires 10 are further limited by the limiting and fixing pieces 12, and the anode piece 8 and the cathode piece 9 are connected to the external circuit. The integrated temperature sensor 13 monitors the internal temperature in real time and sends a signal to the control system to notify the user.

[0034] Aluminum foil 5, as the main carrier for storing charge, works in conjunction with anode plate 8 and cathode plate 9. When the capacitor is connected to the circuit, under the action of the electric field, anode plate 8 and cathode plate 9 respectively carry equal amounts of positive and negative charges, establishing an electric field between them, thereby achieving charge storage. Due to the symmetrical arrangement of anode plate 8 and cathode plate 9, the electric field distribution inside the capacitor is more uniform and symmetrical, avoiding the electric field concentration in certain areas and reducing the situation of excessively high local electric field strength. Electrolytic paper 51 isolates anode plate 8 and cathode plate 9. At the same time, electrolytic paper 51 can absorb electrolyte, making the electrolyte evenly distributed between anode plate 8 and cathode plate 9, improving ion conduction efficiency, thereby enhancing the capacitor's ability to store and release charge. Aluminum foil 5 and electrolytic paper 51 are wound together in the same direction to maximize the contact area between them, which is conducive to better interaction between electrolyte and aluminum foil 5, further improving the capacitor's charge storage and release efficiency and increasing capacitance. The above is the working principle of this capacitor with integrated temperature sensing and protection functions.

Claims

1. A capacitor integrated with temperature sensing and protection function, comprising a wrapped aluminum shell (1), an outer protective layer (2), an inner protective layer (4) and a buffer gel (6), characterized in that: The bottom of the aluminum shell (1) is provided with a bottom cover (11), the outer protective layer (2) is arranged in the inner cavity of the aluminum shell (1), the inner cavity of the outer protective layer (2) is provided with an intermediate layer (3), the inner protective layer (4) is arranged in the inner cavity of the intermediate layer (3), the inner cavity of the inner protective layer (4) is provided with an aluminum foil (5), and the surface of the aluminum foil (5) is provided with an electrolytic paper (51). The aluminum foil (5) and the inner protective layer (4) are filled with a buffer gel (6), the left side of the inner cavity of the aluminum foil (5) is provided with an anode sheet (8), the right side of the inner cavity of the aluminum foil (5) is provided with a cathode sheet (9), the upper ends of the anode sheet (8) and the cathode sheet (9) are provided with wires (10), the upper end of the inner cavity of the aluminum shell (1) is provided with a sealing rubber cover (7), the upper end of the sealing rubber cover (7) is provided with a limiting fixing sheet (12), and the left side of the electrolytic paper (51) is provided with an integrated temperature sensor (13).

2. The capacitor integrated with temperature sensing and protection functions according to claim 1, wherein: The outer protective layer (2), the intermediate layer (3) and the inner protective layer (4) form a group of protective structures, and the material of the intermediate layer (3) is polyurethane foam.

3. The capacitor integrated with temperature sensing and protection functions according to claim 1, wherein: The material of the buffer gel (6) is silica gel, and a gap is left between the aluminum foil (5) and the sealing rubber cover (7).

4. The capacitor of claim 1 integrated with temperature sensing and protection functions, wherein: The aluminum foil (5) and the electrolytic paper (51) are formed by winding in the same direction, and the inner cavity of the limiting fixing sheet (12) is provided with a hole for the two groups of wires (10) to pass through.

5. The capacitor of claim 4, wherein: The bottom ends of the two groups of wires (10) pass through the inner cavities of the limiting fixing sheet (12), the sealing rubber cover (7) and the aluminum foil (5) in sequence and are connected with the anode sheet (8) and the cathode sheet (9) respectively.

6. The capacitor integrated with temperature sensing and protection functions according to claim 5, wherein: The anode sheet (8) and the cathode sheet (9) are symmetrically arranged, and the two groups of wires (10) are symmetrically arranged.

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