A multilayer ceramic capacitor

Abstract

The invention discloses a multilayer ceramic capacitor, comprising a ceramic body, a first terminal electrode and a second terminal electrode; the ceramic body comprises a plurality of dielectric layers and a plurality of internal electrodes, and also comprises an upper surface and a lower surface of the ceramic body arranged oppositely, a first end surface and a second end surface arranged oppositely, and a first side surface and a second side surface arranged oppositely; the first terminal electrode is located at the first end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface, the second terminal electrode is located at the second end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface; the internal electrode comprises a first internal electrode, a second internal electrode and a third internal electrode, one end of the first internal electrode is connected to the first terminal electrode, and the other end forms a gap with the second terminal electrode, one end of the second internal electrode is connected to the second end surface, and the other end forms a gap with the first terminal electrode, and at least one dielectric layer is arranged between the third internal electrode and the first internal electrode and the second internal electrode respectively. The withstand voltage performance of the capacitor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic capacitors, and in particular to a multilayer ceramic capacitor. Background Art

[0002] In order to increase the voltage resistance performance, conventional multilayer ceramic capacitors usually adopt a series design. The first inner electrode and the second inner electrode in the capacitor are usually on the same level and directly opposite to each other in the stacking direction of the dielectric layer and the inner electrode. Due to the small spacing distance between their ends, especially the highly concentrated electric field at the corner position, breakdown and burning are likely to occur at this position. Summary of the invention

[0003] The purpose of the present invention is to provide a multilayer ceramic capacitor. Taking into account the problem in the prior art that the electric field at the corner position is highly concentrated and breakdown is prone to occur due to the relative position of the inner electrodes with a small distance, the end of the first inner electrode and the end of the second inner electrode are staggered with each other in the length direction of the multilayer ceramic capacitor instead of being directly opposite, thereby increasing the distance between the inner electrodes, avoiding electric field concentration, preventing breakdown and burning, and improving the voltage resistance performance of the multilayer ceramic capacitor.

[0004] To achieve the above object, the present invention provides a multilayer ceramic capacitor, comprising: a ceramic body, a first terminal electrode and a second terminal electrode;

[0005] The ceramic body comprises a plurality of dielectric layers and a plurality of internal electrodes, and the internal electrodes are arranged between at least one of the dielectric layers, the ceramic body comprises an upper surface, a lower surface, a first end surface, a second end surface, a first side surface, and a second side surface formed by the side surfaces of the plurality of stacked dielectric layers, the upper surface and the lower surface are arranged opposite to each other, the first end surface and the second end surface are arranged opposite to each other, and the first side surface and the second side surface are arranged opposite to each other;

[0006] The first end electrode is located at the first end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface; the second end electrode is located at the second end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface;

[0007] The inner electrode includes a first inner electrode, a second inner electrode and a third inner electrode, the first inner electrode includes a first end of the first inner electrode and a second end of the first inner electrode, the second inner electrode includes a first end of the second inner electrode and a second end of the second inner electrode, wherein the first end of the first inner electrode is connected to the first end electrode, the second end of the first inner electrode extends toward the second end surface and a gap is formed between the first inner electrode and the second end electrode and they are insulated from each other, the first end of the second inner electrode is connected to the second end surface, the second end of the second inner electrode extends toward the first end surface and a gap is formed between the first end electrode and the first end electrode and they are insulated from each other, at least one dielectric layer is arranged between the third inner electrode and the first inner electrode, and at least one dielectric layer is arranged between the third inner electrode and the second inner electrode.

[0008] In one embodiment, the ceramic body is formed by alternately stacking a plurality of the dielectric layers and a plurality of the internal electrodes to form a cuboid with six faces; the upper surface and the lower surface are arranged opposite to each other and perpendicular to the stacking direction of the dielectric layers and the internal electrodes, the first end surface and the second end surface are arranged opposite to each other and perpendicular to the length direction of the ceramic body, and the first side surface and the second side surface are arranged opposite to each other and perpendicular to the width direction of the ceramic body;

[0009] The second end of the first inner electrode and the second end electrode are arranged side by side along the length direction of the ceramic body, and the second end of the second inner electrode and the first end electrode are arranged side by side along the length direction of the ceramic body.

[0010] In one embodiment, the first internal electrode and the second internal electrode are stacked on the same dielectric layer.

[0011] In one embodiment, the first internal electrode and the second internal electrode are stacked on different dielectric layers.

[0012] In one embodiment, orthographic projections of the first internal electrode and the second internal electrode on the third internal electrode respectively overlap with a portion of the third internal electrode.

[0013] In one embodiment, a first capacitor is formed between the first inner electrode and the third inner electrode, a second capacitor is formed between the second inner electrode and the third inner electrode, and the first capacitor and the second capacitor are connected in series.

[0014] In one embodiment, a gap distance between the second end of the first inner electrode and the second end electrode is smaller than an extension distance of the second end of the second inner electrode to the first end surface.

[0015] In one embodiment, a gap distance between the second end of the second inner electrode and the first end electrode is smaller than an extension distance of the second end of the first inner electrode to the second end surface.

[0016] In one embodiment, a gap is formed between the first inner electrode, the second inner electrode and the third inner electrode and the first side surface, and a gap is formed between the first inner electrode, the second inner electrode and the third inner electrode and the second side surface.

[0017] In one embodiment, the first end of the first inner electrode extends along the width direction of the ceramic body toward at least one of the first side surface and the second side surface, and the first end of the second inner electrode extends along the width direction of the ceramic body toward at least one of the first side surface and the second side surface.

[0018] Compared with the prior art, the multilayer ceramic capacitor provided by the present invention has the following beneficial effects:

[0019] By arranging the first end of the first inner electrode to be connected to the first end electrode, the second end of the first inner electrode extends toward the second end surface and a gap is formed between the second end electrode and the second end electrode, and the first end of the second inner electrode is connected to the second end surface, the second end of the second inner electrode extends toward the first end surface and a gap is formed between the first end electrode and the first end electrode, and the second end of the first inner electrode and the second end of the second inner electrode are staggered in direction instead of being directly opposite to each other, the distance between the two is increased, electric field concentration is avoided, breakdown and burning are prevented, and the voltage resistance performance of the multilayer ceramic capacitor is improved, making it suitable for high voltage applications.

[0020] Furthermore, the second end of the first inner electrode and the second end electrode are arranged side by side along the length direction of the ceramic body, and the second end of the second inner electrode and the first end electrode are arranged side by side along the length direction of the ceramic body. The current can flow along the width direction of the multilayer ceramic capacitor, shortening the current path, thereby reducing the equivalent series inductance. Therefore, the multilayer ceramic capacitor of the present invention is also suitable for filtering high-frequency noise.

[0021] Furthermore, a first capacitor is formed between the first inner electrode and the third inner electrode, and a second capacitor is formed between the second inner electrode and the third inner electrode. The first capacitor and the second capacitor are connected in series and have equal capacity, which can play a role in dividing the working voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a cross-sectional schematic diagram of a multilayer ceramic capacitor provided by an embodiment of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of a multilayer ceramic capacitor provided by another embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a multilayer ceramic capacitor provided by another embodiment of the present invention;

[0026] Figure 4 is a cross-sectional schematic diagram of a multilayer ceramic capacitor provided by another embodiment of the present invention;

[0027] Figure 5 is an equivalent circuit of a multilayer ceramic capacitor provided by another embodiment of the present invention;

[0028] Figure 6 is a cross-sectional schematic diagram of a multilayer ceramic capacitor provided by an embodiment of the present invention;

[0029] Figure 7 is a schematic cross-sectional view of a conventional multilayer ceramic capacitor;

[0030] Figure 8 is another cross-sectional schematic diagram of a conventional multilayer ceramic capacitor;

[0031] Fig. 9 is a schematic cross-sectional view of a conventional series-design multilayer ceramic capacitor.

[0032] Description of main components and symbols:

[0033] 100, 200, multilayer ceramic capacitor; 10, 20, ceramic body; S1, upper surface; S2, lower surface; S3, first end surface; S4, second end surface; S5, first side surface; S6, second side surface; 12A, 22A, first inner electrode; 12B, 22B, second inner electrode; 12C, 22C, third inner electrode; 13, 23, dielectric layer; 14A, 24A, first end electrode; 14B, 24B, second end electrode; a, end corner position of the first inner electrode; b, end corner position of the second inner electrode; 221A, first end of the first inner electrode; 222A, second end of the first inner electrode; 221B, first end of the second inner electrode; 222B, second end of the second inner electrode. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be understood that the step numbers used in this document are only for convenience of description and are not intended to limit the order in which the steps are executed.

[0036] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0037] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0038] The term "and / or" means and includes any and all possible combinations of one or more of the associated listed items.

[0039] See also Figures 1 to 4 A certain embodiment of the present invention provides a multilayer ceramic capacitor, including: a ceramic body 20, a first terminal electrode 24A and a second terminal electrode 24B.

[0040] The ceramic body 20 includes a plurality of dielectric layers 23 and a plurality of internal electrodes, and an internal electrode is arranged between at least one dielectric layer 23, the ceramic body 20 has an upper surface S1, a lower surface S2, a first end surface S3, a second end surface S4, a first side surface S5, and a second side surface S6 formed by the side surfaces of the plurality of stacked dielectric layers, the upper surface S1 and the lower surface S2 are arranged opposite to each other, the first end surface S3 and the second end surface S4 are arranged opposite to each other, the first side surface S5 and the second side surface S6 are arranged opposite to each other, the first end electrode 24A is located at the first end surface S3 and covers a portion of the upper surface S1, the lower surface S2, the first side surface S5, and the second side surface S6, the second end electrode 24B is located at the second end surface S4 and covers a portion of the upper surface S1, the lower surface S2, the first side surface S5, and the second side surface S6, and the internal electrodes include a first internal electrode 22A, a second internal electrode 22B, and a third internal electrode 2 2C, the first inner electrode 22A includes a first end 221A of the first inner electrode and a second end 222A of the first inner electrode, and the second inner electrode 22B includes a first end 221B of the second inner electrode and a second end 222B of the second inner electrode, wherein the first end 221A of the first inner electrode is connected to the first end electrode 24A, the second end 222A of the first inner electrode extends to the second end surface S3 and a gap is formed between the second end electrode 24B and the two ends are insulated from each other, the first end 221B of the second inner electrode is connected to the second end surface S4, the second end 222B of the second inner electrode extends to the first end surface S3 and a gap is formed between the first end electrode 24A and the two ends are insulated from each other, at least one dielectric layer 23 is arranged between the third inner electrode 22C and the first inner electrode 22A, and at least one dielectric layer 23 is arranged between the third inner electrode 22C and the second inner electrode 22B.

[0041] The ceramic body 20 is a rectangular parallelepiped with six faces formed by alternately stacking a plurality of dielectric layers 23 and a plurality of internal electrodes, and the length can be 0.4 mm to 5.6 mm, the width can be 0.2 mm to 5.0 mm, and the thickness can be 0.2 mm to 2.5 mm. The upper surface S1 and the lower surface S2 are arranged oppositely and perpendicular to the stacking direction of the dielectric layer 23 and the internal electrode, the first end surface S3 and the second end surface S4 are arranged oppositely and perpendicular to the length direction of the ceramic body 20, the first side surface S5 and the second side surface S6 are arranged oppositely and perpendicular to the width direction of the ceramic body 20, the second end 222A of the first internal electrode and the second end electrode 24B are arranged side by side along the length direction of the ceramic body 20, and the second end 222B of the second internal electrode and the first end electrode 24A are arranged side by side along the length direction of the ceramic body 20.

[0042] In the conventional multilayer ceramic capacitor 100 of series design, the first internal electrode 12A and the second internal electrode 12B are stacked on the same dielectric layer 13 and arranged side by side in the length direction of the multilayer ceramic capacitor 100. In the present embodiment, although the first internal electrode 22A and the second internal electrode 22B are also stacked on the same dielectric layer 23, they are different from the conventional multilayer ceramic capacitor 100 of series design in that the first internal electrode 22A and the second internal electrode 22B stacked on the same dielectric layer 23 are arranged side by side in the width direction of the multilayer ceramic capacitor 200, and the ends of the first internal electrode 22A and the ends of the second internal electrode 22B are staggered from each other in the length direction of the multilayer ceramic capacitor 200 instead of being directly opposite, and the distance between the two is greatly increased, which significantly reduces the degree of electric field concentration, prevents breakdown and burning, and further improves the voltage resistance performance of the multilayer ceramic capacitor 200.

[0043] There is no particular restriction on the shape of the inner electrode, but in order to obtain a greater volume utilization rate and facilitate production, a rectangular thin layer is preferably used. The thickness of the inner electrode is preferably 1 μm to 3 μm. The inner electrodes are stacked in a predetermined number inside the ceramic body 20 in a manner parallel to the upper surface S1 and the lower surface S2. The inner electrodes include a first inner electrode 22A, a second inner electrode 22B and a third inner electrode 22C. Figure 4 The figure only shows by way of example that there are five first inner electrodes 22A and five second inner electrodes 22B and four third inner electrodes 22C. In fact, their numbers are not limited and can be adjusted according to practical applications. However, the numbers of the first inner electrode 22A, the second inner electrode 22B and the third inner electrode 22C are preferably at least one.

[0044] Rounding the corners of the inner electrodes can reduce charge concentration and further improve the withstand voltage performance of the multilayer ceramic capacitor 200 .

[0045] In the present embodiment, the first internal electrode 22A, the second internal electrode 22B, and the third internal electrode 22C are all rectangular.

[0046] The first inner electrode 22A and the second inner electrode 22B are stacked on the same dielectric layer 23. The first end 221A of the first inner electrode extends to the first end surface S3 and is connected to the first end electrode 24A. The second end 222A of the first inner electrode extends to a position spaced a certain distance from the second end electrode 24B to ensure insulation from the second end electrode 24B. The first end 221B of the second inner electrode extends to the second end surface S4 and is connected to the second end electrode 24B. The second end 222B of the second inner electrode extends to a position spaced a certain distance from the first end electrode 24A to ensure insulation from the first end electrode 24A. The gap distance between the second end 222A of the first inner electrode and the second end electrode 24B is smaller than the extension distance of the second end 222B of the second inner electrode to the first end surface S3, that is, the second end 222A of the first inner electrode is closer to the second end electrode 24B than the second end 222B of the second inner electrode. The gap distance between the second end 222B of the second inner electrode and the first end electrode 24A is smaller than the extension distance of the second end 222A of the first inner electrode to the second end surface S4, that is, the second end 222B of the second inner electrode is closer to the first end electrode 24A than the second end 222A of the first inner electrode. That is, the second end 222A of the first inner electrode and the second end 222B of the second inner electrode are staggered in the length direction of the multilayer ceramic capacitor instead of being directly opposite to each other.

[0047] In one embodiment, the orthographic projections of the first inner electrode 22A and the second inner electrode 22B on the third inner electrode 22C partially overlap with the third inner electrode 22C.

[0048] Specifically, the third inner electrode 22C is used as a floating electrode, and is spaced a certain distance from both the first end surface S3 and the second end surface S4, so the third inner electrode 22C is not connected to any of the first end electrode 24A and the second end electrode 24B. The third inner electrode 22C is separated from the first inner electrode 22A by a dielectric layer 23, and the third inner electrode 22C is separated from the second inner electrode 22B by a dielectric layer 23. The orthographic projections of the first inner electrode 22A and the second inner electrode 22B on the third inner electrode 22C overlap with a part of the third inner electrode 22C, that is, the first inner electrode 22A and the second inner electrode 22B respectively generate opposing areas with the third inner electrode 22C, so that a first capacitor C1 can be formed between the first inner electrode 12A and the third inner electrode 12C, and a second capacitor C2 can be formed between the second inner electrode 12B and the third inner electrode 12C. The first capacitor C1 and the second capacitor C2 are connected in series, which can play a role in distributing voltage and improve the withstand voltage performance of the multilayer ceramic capacitor 200. The opposing area between the first inner electrode 22A and the third inner electrode 22C is equal to the opposing area between the second inner electrode 22B and the third inner electrode 22C, so C1 = C2, and the voltage can be equally divided. In other embodiments, the two opposing areas may not be equal.

[0049] In one embodiment, a first capacitor C1 is formed between the first inner electrode 22A and the third inner electrode 22C, a second capacitor C2 is formed between the second inner electrode 22B and the third inner electrode 22C, and the first capacitor C1 and the second capacitor C2 are connected in series.

[0050] Specifically, the first inner electrode 22A and the second inner electrode 22B stacked on the same dielectric layer 23 are regarded as the first electrode unit, and the third inner electrode 22C is regarded as the second electrode unit. By alternately arranging a plurality of first electrode units and a plurality of second electrode units in the stacking direction of the dielectric layer 23 and the inner electrodes, it is equivalent to connecting a plurality of first capacitors C1 and second capacitors C2 in series in parallel to form a Figure 5 The equivalent circuit shown can increase the capacitance of the multilayer ceramic capacitor 200 , that is, the more the number of the first electrode units and the second electrode units is, the greater the capacitance of the multilayer ceramic capacitor 200 is.

[0051] In one embodiment, gaps are formed between the first inner electrode 22A, the second inner electrode 22B and the third inner electrode 22C and the first side surface S5 , and gaps are formed between the first inner electrode 22A, the second inner electrode 22B and the third inner electrode 22C and the second side surface S6 .

[0052] See also Figure 6 In a certain embodiment, the first end 221A of the first inner electrode extends along the width direction of the ceramic body 20 to at least one of the first side surface S5 and the second side surface S6, and the first end 221B of the second inner electrode extends along the width direction of the ceramic body 20 to at least one of the first side surface S5 and the second side surface S6.

[0053] Specifically, one end of the first inner electrode 22A connected to the first terminal electrode 24A also extends to the first side surface S5 and the second side surface S6 along the width direction of the multilayer ceramic capacitor 200, that is, the first inner electrode 22A is formed in a T-shape. Similarly, one end of the second inner electrode 22B connected to the second terminal electrode 24B also extends to the first side surface S5 and the second side surface S6 along the width direction of the multilayer ceramic capacitor 200, that is, the second inner electrode 22B is formed in a T-shape. The first inner electrode 22A may extend to the first side surface S5 and the second side surface S6, or may be spaced a certain distance from either the first side surface S5 and the second side surface S6, or may be spaced a certain distance from both the first side surface S5 and the second side surface S6. The second inner electrode 22B is similarly configured to the first inner electrode 22A, and will not be described in detail. By forming the first inner electrode 22A and the second end electrode 24B into a T-shape, the contact area between the first inner electrode 22A and the first end electrode 24A and the contact area between the second inner electrode 22B and the second end electrode 24B can be increased, thereby ensuring reliable circuit connection and improving the bonding strength of the first end electrode 24A and the second end electrode 24B to the ceramic body 20.

[0054] Exemplarily, the multilayer ceramic capacitor 200 can also be used as a decoupling capacitor, for example, to filter out high-frequency noise. Since the multilayer ceramic capacitor 200 designed in series is convenient for obtaining a smaller capacitance, the multilayer ceramic capacitor 200 with a smaller capacitance presents a lower impedance to high-frequency noise, which can improve the filtering effect. In addition, the first inner electrode 22A and the second inner electrode 22B are arranged side by side in the width direction of the multilayer ceramic capacitor 200, and the current can flow along the width direction of the multilayer ceramic capacitor 200, shortening the current path, thereby reducing the equivalent series inductance, thereby further improving the effect of filtering out high-frequency noise.

[0055] In one embodiment, the first internal electrode 22A and the second internal electrode 22B are stacked on different dielectric layers 23 , that is, the first internal electrode 22A and the second internal electrode 22B are separated by one dielectric layer 23 .

[0056] In one embodiment, the first internal electrode 22A, the second internal electrode 22B, and the third internal electrode 22C are spaced apart from the first side surface S5 and the second side surface S6 by a certain distance, so as to improve the moisture resistance of the multilayer ceramic capacitor 200 .

[0057] Compared to Figure 7-Figure 9The conventional multilayer ceramic capacitor shown includes a ceramic body 10 and a first terminal electrode 14A and a second terminal electrode 14B respectively arranged on two sides of the ceramic body 10. The ceramic body 10 includes a plurality of dielectric layers 13 and internal electrodes alternately stacked. The internal electrodes include a first internal electrode 12A, a second internal electrode 12B and a third internal electrode 12C. The first internal electrode 12A is connected to the first terminal electrode 14A, the second internal electrode 12B is connected to the second terminal electrode 14B, and the third internal electrode 12C is used as a floating electrode and is not connected to any of the first terminal electrode 14A and the second terminal electrode 14B, so that a capacitor C1 is formed between the first internal electrode 12A and the third internal electrode 12C, and a capacitor C2 is formed between the second internal electrode 12B and the third internal electrode 12C. C1 and C2 are connected in series and have equal capacitance, which can play a role in dividing the voltage and improve the voltage resistance performance of the multilayer ceramic capacitor. However, the first inner electrode 12A and the second inner electrode 12B are placed at the same level and directly opposite to each other in the stacking direction of the dielectric layer 13 and the inner electrode, and the spacing distance between their ends is small. After the multilayer ceramic capacitor is loaded with a high voltage, the charge is mainly concentrated at the ends of the first inner electrode 12A and the second inner electrode 12B, especially the electric field between the corner positions such as point a and point b is highly concentrated, and because the distance between the two points is small, it is easy to break down and burn at this position, so the voltage resistance performance of the multilayer ceramic capacitor is poor.

[0058] Therefore, the present invention increases the distance between the second end 222A of the first inner electrode and the second end 222B of the second inner electrode by staggering the directions of the two instead of directly facing each other, avoiding electric field concentration, preventing breakdown and burning, and improving the voltage resistance performance of the multilayer ceramic capacitor, so that it is suitable for high voltage applications. The second end 222A of the first inner electrode and the second end electrode 24B are arranged side by side along the length direction of the ceramic body, and the second end 222B of the second inner electrode and the first end electrode 24A are arranged side by side along the length direction of the ceramic body 20. The current can flow along the width direction of the multilayer ceramic capacitor 200, shortening the current path, thereby reducing the equivalent series inductance, so the multilayer ceramic capacitor of the present invention is also suitable for filtering high-frequency noise. A first capacitor C1 is formed between the first inner electrode 22A and the third inner electrode 22C, and a second capacitor C2 is formed between the second inner electrode 22B and the third inner electrode 22C. The first capacitor C1 and the second capacitor C2 are connected in series and have equal capacity, which can play a role in dividing the working voltage.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multilayer ceramic capacitor, characterized in that: include: A ceramic body, a first terminal electrode and a second terminal electrode; The ceramic body comprises a plurality of dielectric layers and a plurality of internal electrodes, and the internal electrodes are arranged between at least one of the dielectric layers, the ceramic body has an upper surface, a lower surface, a first end surface, a second end surface, a first side surface and a second side surface formed by the side surfaces of the plurality of stacked dielectric layers, the upper surface and the lower surface are arranged oppositely, the first end surface and the second end surface are arranged oppositely, and the first side surface and the second side surface are arranged oppositely; wherein the internal electrodes are rectangular thin layers; The first end electrode is located at the first end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface; the second end electrode is located at the second end surface and covers the upper surface, the lower surface, the first side surface and a part of the second side surface; The inner electrode includes a first inner electrode, a second inner electrode and a third inner electrode, the first inner electrode includes a first end of the first inner electrode and a second end of the first inner electrode, the second inner electrode includes a first end of the second inner electrode and a second end of the second inner electrode, wherein the first end of the first inner electrode is connected to the first end electrode, the second end of the first inner electrode extends toward the second end surface and a gap is formed between the first inner electrode and the second end electrode and they are insulated from each other, the first end of the second inner electrode is connected to the second end surface, the second end of the second inner electrode extends toward the first end surface and a gap is formed between the first end electrode and the first end electrode and they are insulated from each other, at least one dielectric layer is arranged between the third inner electrode and the first inner electrode, and at least one dielectric layer is arranged between the third inner electrode and the second inner electrode.

2. The multilayer ceramic capacitor according to claim 1, wherein: The ceramic body is formed by alternately stacking a plurality of the dielectric layers and a plurality of the internal electrodes to form a cuboid with six faces; the upper surface and the lower surface are arranged opposite to each other and perpendicular to the stacking direction of the dielectric layers and the internal electrodes, the first end surface and the second end surface are arranged opposite to each other and perpendicular to the length direction of the ceramic body, and the first side surface and the second side surface are arranged opposite to each other and perpendicular to the width direction of the ceramic body; The second end of the first inner electrode and the second end electrode are arranged side by side along the length direction of the ceramic body, and the second end of the second inner electrode and the first end electrode are arranged side by side along the length direction of the ceramic body.

3. The multilayer ceramic capacitor according to claim 1, wherein: The first internal electrode and the second internal electrode are stacked on the same dielectric layer.

4. The multilayer ceramic capacitor according to claim 1, wherein: The first internal electrode and the second internal electrode are stacked on different dielectric layers.

5. The multilayer ceramic capacitor according to claim 1, wherein: Orthographic projections of the first internal electrode and the second internal electrode on the third internal electrode respectively overlap with a portion of the third internal electrode.

6. The multilayer ceramic capacitor according to claim 5, characterized in that A first capacitor is formed between the first inner electrode and the third inner electrode, a second capacitor is formed between the second inner electrode and the third inner electrode, and the first capacitor and the second capacitor are connected in series.

7. The multilayer ceramic capacitor according to claim 1, wherein: A gap distance between the second end of the first internal electrode and the second end electrode is smaller than an extension distance of the second end of the second internal electrode to the first end surface.

8. The multilayer ceramic capacitor according to claim 1, wherein: A gap distance between the second end of the second internal electrode and the first end electrode is smaller than an extension distance of the second end of the first internal electrode to the second end surface.

9. The multilayer ceramic capacitor according to claim 1, wherein: A gap is formed between the first internal electrode, the second internal electrode and the third internal electrode and the first side surface, and a gap is formed between the first internal electrode, the second internal electrode and the third internal electrode and the second side surface.

10. The multilayer ceramic capacitor according to claim 2, wherein: The first end of the first internal electrode extends along the width direction of the ceramic body toward at least one of the first side surface and the second side surface, and the first end of the second internal electrode extends along the width direction of the ceramic body toward at least one of the first side surface and the second side surface.

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