Capacitor

Abstract

The utility model provides a capacitor. The capacitor comprises a body, an end cover and a discharge assembly. The end cover is connected to the body; a connecting plate is arranged on the end cover, is opposite to the body and is electrically connected with the body; the discharging assembly is connected to the connecting plate and used for releasing residual charges in the body. The end cover and the body are two independent structures, and the end cover is connected to the body to realize the assembly of the capacitor. The connecting plate arranged on the end cover is electrically connected with the capacitor element in the body, so that the body has the conditions of storing charges and releasing electric energy. The connecting plate is opposite to the body and is connected with the discharging assembly, so that the discharging assembly can release residual charges in the body, the performance and stability of the capacitor are guaranteed, and potential safety hazards are avoided. Further, the discharge component faces away from the body, which can be understood as the discharge component is away from the capacitive element in the body. Therefore, the charge release effect of the discharge assembly is prevented from being influenced, and the performance and stability of the capacitor are further ensured.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a capacitor. Background Art

[0002] The main function of a capacitor is to store charge and release electrical energy. When a capacitor is disconnected from a charged state, some residual charge will still exist inside the capacitor.

[0003] If the residual charge in the capacitor is not released, it may cause the capacitor to fail. Long-term accumulation of residual charge will cause the insulation material inside the capacitor to be damaged, thus affecting the performance and stability of the capacitor and creating safety hazards. Utility Model Content

[0004] The present application provides a capacitor to solve the problem that residual charge in the capacitor cannot be released, thereby achieving the release of residual charge, ensuring the performance and stability of the capacitor, and thus avoiding safety hazards.

[0005] In a first aspect, the present application provides a capacitor, comprising: a body, an end cover and a discharge assembly; the end cover is connected to the body; a connecting plate is provided on the end cover, the connecting plate faces away from the body, and the connecting plate is electrically connected to the body; the discharge assembly is connected to the connecting plate, and the discharge assembly is used to release the residual charge in the body.

[0006] According to the first aspect, the capacitor includes: a body, an end cap and a discharge assembly. The end cap and the body are two independently arranged structures, and the end cap is connected to the body to realize the assembly of the capacitor. The connecting plate arranged on the end cap is electrically connected to the capacitor element in the body, so that the body has the conditions to store charge and release electrical energy. The connecting plate is facing away from the body, and the connecting plate is connected to the discharge assembly, so that the discharge assembly can release the residual charge in the body, thereby ensuring the performance and stability of the capacitor, thereby avoiding potential safety hazards. Furthermore, the discharge resistor is arranged on the connecting plate, and the connecting plate is facing away from the body, that is, the discharge resistor is facing away from the body. The discharge resistor is facing away from the body, which can be understood as the discharge resistor being away from the capacitor element in the body. Since the distance between the discharge resistor and the capacitor element is too close, the temperature rise of the discharge resistor will increase, thereby affecting the effect of the discharge resistor releasing charge. Therefore, the discharge resistor is away from the capacitor element to avoid affecting the effect of the discharge resistor releasing charge, thereby further ensuring the performance and stability of the capacitor.

[0007] In a possible design, the connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor and a second discharge resistor; the two ends of the first discharge resistor are respectively connected to the first plate and the second plate; the two ends of the second discharge resistor are respectively connected to the second plate and the third plate.

[0008] In a possible design, the connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; one end of the first discharge resistor is connected to the first plate, one end of the second discharge resistor is connected to the third plate, and one end of the third discharge resistor is connected to the second plate; the other end of the first discharge resistor, the other end of the second discharge resistor and the other end of the third discharge resistor are connected.

[0009] In a possible design, the connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; the two ends of the first discharge resistor are respectively connected to the first plate and the second plate; the two ends of the second discharge resistor are respectively connected to the second plate and the third plate; the two ends of the third discharge resistor are respectively connected to the first plate and the third plate.

[0010] In summary, there are three arrangements of discharge resistors. Different arrangements are suitable for circuits with different impedances. Operators can choose the arrangement of discharge resistors as needed.

[0011] In a possible design, the capacitor further includes a protective cover, which is buckled onto the end cover, and the end cover, the connecting plate and the discharge assembly are arranged inside the protective cover.

[0012] According to the description of the above embodiments, the protective cover is buckled on the end cover, and the end cover, the connecting plate and the discharge assembly cover are arranged in the protective cover to protect the end cover, the connecting plate and the discharge assembly, thereby ensuring the performance and stability of the capacitor.

[0013] In a possible design, an isolation plate is disposed in the protective cover, and the isolation plate divides the protective cover into a plurality of isolation areas, and one connecting plate is disposed in each isolation area.

[0014] According to the description of the above embodiment, an isolation plate is provided in the protective cover, and the isolation plate isolates the protective cover into multiple isolation areas. A connecting plate is provided in an isolation area, and multiple isolation areas are provided to isolate multiple connecting plates, so that short circuits between multiple connecting plates can be avoided, thereby ensuring the performance and stability of the capacitor.

[0015] In a possible design, a buckle is provided on the protective cover, and the buckle is buckled on the connecting plate.

[0016] According to the description of the above embodiment, the clips provided on the protective cover are snapped onto the connecting plate, so that the protective cover is fixed on the connecting plate, even if the protective cover is fixedly connected to the end cover, the protective cover is prevented from falling off the end cover, and the end cover, the connecting plate and the discharge assembly are prevented from being damaged by external forces, thereby ensuring the performance and stability of the capacitor.

[0017] In a possible design, a wiring terminal is provided in the end cover, and a wiring hole is provided on the protective cover, and the position of the wiring hole corresponds to the wiring terminal.

[0018] According to the description of the above embodiment, a wiring hole is provided on the protective cover, and the position of the wiring hole corresponds to the wiring terminal. Thus, the protective cover does not affect the connection between the wiring terminal and the system circuit, ensuring that the wiring terminal can be used to connect the system circuit, so that the body has the conditions to store charge and release electrical energy.

[0019] In a possible design, a heat dissipation hole is formed on the protective cover, and the heat dissipation hole is arranged on a side close to the discharge component.

[0020] According to the description of the above embodiment, a heat dissipation hole is provided on the protective cover, and the position of the wiring hole corresponds to the discharge resistor, so that the discharge resistor can dissipate heat and cool down through the heat dissipation hole during the discharge process, thereby extending the service life of the discharge resistor and ensuring the performance and stability of the capacitor.

[0021] In a possible design, the heat dissipation holes are strip holes or circular holes.

[0022] According to the description of the above embodiments, the strip holes or circular holes can be opened on the protective cover to achieve heat dissipation of the discharge resistor. The strip holes have a large heat dissipation area and a good heat dissipation effect. The shape of the circular holes does not require additional design and has a lower manufacturing cost. The operator can choose according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the structure of an end cover in an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the assembly of an end cap, a connecting plate and a discharge resistor in an embodiment of the present application;

[0026] Figure 3This is a schematic diagram of the structure of a protective cover in an embodiment of the present application;

[0027] Figure 4 for Figure 3 A schematic diagram from another perspective;

[0028] Figure 5 This is a schematic diagram of the assembly of an end cap and a protective cover in an embodiment of the present application;

[0029] Figure 6 for Figure 5 Exploded view of;

[0030] Figure 7 This is a schematic diagram of the structure of a buckle and an isolation plate in a protective cover in an embodiment of the present application;

[0031] Figure 8 for Figure 7 A partial enlarged view of part A;

[0032] Fig. 9 for Figure 5 A top view of

[0033] Fig.10 for Fig. 9 Cross-sectional view along direction BB;

[0034] Fig.11 for Fig.10 A partial enlarged view of section C.

[0035] Description of reference numerals:

[0036] 1-end cap;

[0037] 11-connecting plate; 11a-first plate; 11b-second plate; 11c-third plate; 111-first end; 112-second end; 113-welding hole;

[0038] 2- Terminals;

[0039] 3-Discharge resistor;

[0040] 4-protection cover; 41-isolation plate;

[0041] 42- buckle; 421- guide surface; 422- snap-fit ​​surface; 43- wiring hole; 44- heat dissipation hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0044] The terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0048] In addition, the expressions of the indicated directions, such as the X direction, the Y direction, and the Z direction, used to illustrate the operation and construction of the components of the present embodiment are not absolute but relative, and although these indications are appropriate when the components of the battery pack are in the positions shown in the figures, when these positions change, these directions should be interpreted differently to correspond to the changes.

[0049] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0050] In the description of the present application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two groups (including two).

[0051] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] An embodiment of the present application provides a capacitor, which includes: a body, an end cover and a discharge assembly; the end cover is connected to the body; a connecting plate is provided on the end cover, the connecting plate faces away from the body, and the connecting plate is electrically connected to the body; the discharge assembly is connected to the connecting plate, and the discharge assembly is used to release the residual charge in the body.

[0053] A capacitor is a component that stores electric charge and releases electric energy. A capacitor can be composed of a body and an end cap. The end cap and the body are two independently arranged structures. The end cap is connected to the end of the body and is electrically connected to the body.

[0054] The capacitor element in the body may include a dielectric and a conductive plate. The dielectric and the conductive plate form an electric field, and the electric field is used to store electric charge and release electric energy.

[0055] See also Figure 1 The end cap 1 may be provided with a connecting plate 11 in the direction facing away from the body, and the connecting plate 11 is provided to realize the electrical connection between the end cap 1 and the body. Specifically, the connecting plate 11 includes a first end 111 and a second end 112 which are arranged opposite to each other. Figure 2 It can be seen that the first end 111 of the connecting plate 11 is connected to the terminal 2, and the terminal 2 is used to connect the system circuit, so that the main body is connected to the system circuit, and the main body is charged through the system circuit, so that the main body has the conditions to store charge and release electrical energy.

[0056] Furthermore, when the capacitor is powered off, some residual charge will still exist inside the capacitor. If the residual charge in the capacitor is not released, it may cause the capacitor to fail. Long-term accumulation of residual charge will cause the insulating material inside the capacitor to be damaged, thereby affecting the performance and stability of the capacitor and creating safety hazards.

[0057] Specifically, Figure 2 As shown, the second end 112 of the connecting plate 11 is connected to the discharge component, so that the discharge component can release the residual charge in the body, ensure the performance and stability of the capacitor, and avoid potential safety hazards.

[0058] Among them, Figure 2 As shown, the discharge component can be a plurality of discharge resistors 3 connected to the connection plate 11, and the discharge resistor 3 is a resistor for releasing charge. Therefore, the discharge resistor 3 is connected to the body through the connection plate, and the residual charge in the body can be released.

[0059] Furthermore, since the connecting plate 11 is disposed on the end cap 1 and faces away from the body, the discharge resistor 3 is connected to the connecting plate 11. Obviously, the discharge resistor 3 is disposed on the end cap 1 and faces away from the body. The connection between the discharge resistor 3 and the connecting plate 11 may be welding. For example, Figure 1 As shown, a welding hole 113 is formed at the second end 112 of the connecting plate 11 , and the wires connected to the two ends of the discharge resistor 3 pass through the welding hole 113 and are welded inside the welding hole 113 .

[0060] Compared with setting the welding position of the discharge resistor 3 in the body, setting the welding position of the discharge resistor 3 on the end cover 1 makes the welding operation easier to operate and makes the welding point more firm and less likely to fall off.

[0061] In addition, the discharge resistor 3 faces away from the body, which can be understood as the discharge resistor 3 being far away from the capacitor element in the body. Since the distance between the discharge resistor 3 and the capacitor element is too close, the temperature rise of the discharge resistor 3 will increase, thereby affecting the effect of the discharge resistor 3 releasing the charge. Therefore, the discharge resistor 3 is far away from the capacitor element to avoid affecting the effect of the discharge resistor 3 releasing the charge, and further ensure the performance and stability of the capacitor.

[0062] In summary, the capacitor provided in the embodiment of the present application includes: a body, an end cap 1 and a discharge assembly. The end cap 1 and the body are two independently arranged structures, and the end cap 1 is connected to the body to realize the assembly of the capacitor. The connecting plate 11 arranged on the end cap 1 is electrically connected to the capacitive element in the body, so that the body has the conditions to store charge and release electrical energy. The connecting plate 11 faces away from the body, and the connecting plate 11 is connected to the discharge assembly, so that the discharge assembly can release the residual charge in the body, thereby ensuring the performance and stability of the capacitor, thereby avoiding safety hazards.

[0063] Further, the discharge resistor 3 is arranged on the connecting plate 11, and the connecting plate 11 is facing away from the body, that is, the discharge resistor 3 is facing away from the body. The discharge resistor 3 is facing away from the body, which can be understood as the discharge resistor 3 being away from the capacitor element in the body. Since the distance between the discharge resistor 3 and the capacitor element is too close, the temperature rise of the discharge resistor 3 will increase, thereby affecting the effect of the discharge resistor 3 releasing the charge. Therefore, the discharge resistor 3 is away from the capacitor element to avoid affecting the effect of the discharge resistor 3 releasing the charge, and further ensure the performance and stability of the capacitor.

[0064] The discharge assembly includes a plurality of discharge resistors 3, and the plurality of discharge resistors 3 are connected to the connection plate 11. The plurality of discharge resistors 3 can be arranged in a variety of ways, and three possible structural forms will be exemplarily shown below, but they do not constitute a limitation on the technical solution of the present application.

[0065] The first arrangement method, such as Figure 2 As shown, the discharge component includes a first discharge resistor 3 and a second discharge resistor 3; the first discharge resistor 3 and the second discharge resistor 3 are arranged in parallel.

[0066] Among them, the parallel arrangement can be understood as: the connecting plate 11 includes a first plate 11a, a second plate 11b and a third plate 11c, the discharge component includes a first discharge resistor and a second discharge resistor; the two ends of the first discharge resistor are respectively connected to the first plate 11a and the second plate 11b; the two ends of the second discharge resistor are respectively connected to the second plate 11b and the third plate 11c.

[0067] Specifically, the first discharge resistor 3 includes a first joint and a second joint, and the second discharge resistor 3 includes a third joint and a fourth joint. The first joint is welded on the first plate 11a; the second joint and the third joint are welded together and then welded on the second plate 11b; the fourth joint is welded on the third plate 11c.

[0068] In the second arrangement, the discharge component includes a first discharge resistor, a second discharge resistor and a third discharge resistor; the first discharge resistor, the second discharge resistor and the third discharge resistor are arranged in a Y shape.

[0069] Among them, the Y-shaped arrangement can be understood as: the connecting plate includes a first plate, a second plate and a third plate, the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; one end of the first discharge resistor is connected to the first plate, one end of the second discharge resistor is connected to the third plate, and one end of the third discharge resistor is connected to the second plate; the other end of the first discharge resistor, the other end of the second discharge resistor and the other end of the third discharge resistor are connected.

[0070] Specifically, the first discharge resistor includes a first joint and a second joint, the second discharge resistor includes a third joint and a fourth joint, and the third discharge resistor includes a fifth joint and a sixth joint. The first joint is welded on the first board; the second joint is welded to the third joint as a whole and then welded to the fifth joint; the sixth joint is welded to the second board; and the fourth joint is welded to the third board.

[0071] In a third arrangement, the discharge component includes a first discharge resistor, a second discharge resistor and a third discharge resistor; the first discharge resistor, the second discharge resistor and the third discharge resistor are arranged in a triangle.

[0072] Among them, the triangular arrangement can be understood as: the connecting plate includes a first plate, a second plate and a third plate, the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; the two ends of the first discharge resistor are respectively connected to the first plate and the second plate; the two ends of the second discharge resistor are respectively connected to the second plate and the third plate; the two ends of the third discharge resistor are respectively connected to the first plate and the third plate.

[0073] Specifically, the first discharge resistor includes a first joint and a second joint, the second discharge resistor includes a third joint and a fourth joint, and the third discharge resistor includes a fifth joint and a sixth joint. The first joint and the fifth joint are welded together on the first board; the second joint and the third joint are welded together and then welded to the second board; the fourth joint and the sixth joint are welded together on the third board.

[0074] In summary, the discharge components include three arrangements: parallel arrangement, Y-type arrangement and triangle arrangement. Among them, the discharge components arranged in parallel and the discharge components arranged in Y-type are suitable for circuits that require lower impedance; the discharge components arranged in triangle are used for circuits that require higher impedance. The operator can choose the arrangement of the discharge components according to their needs.

[0075] Figure 3 and Figure 4 Schematic diagram of the structure of the protective cover 4 in the embodiment of the present application at different angles. Figure 5 and Figure 6 It can be seen that the protective cover 4 is buckled onto the end cover 1 , and the end cover 1 , the connecting plate 11 and the discharge assembly cover are arranged inside the protective cover 4 .

[0076] The protective cover 4 is a hollow shell structure with a housing cavity. The housing cavity is composed of four side plates and a top plate, that is, an opening is provided on one side corresponding to the top plate. The protective cover 4 covers the end cap 1, the connecting plate 11 and the discharge assembly in the protective cover 4 through the opening, and provides protection for the end cap 1, the connecting plate 11 and the discharge assembly through four side plates and a top plate, so as to avoid damage to the end cap 1, the connecting plate 11 and the discharge assembly by external forces, thereby avoiding affecting the performance and stability of the capacitor.

[0077] According to the description of the above embodiment, the protective cover 4 is buckled on the end cover 1, and the end cover 1, the connecting plate 11 and the discharge assembly cover are arranged in the protective cover 4, which plays a role in protecting the end cover 1, the connecting plate 11 and the discharge assembly, thereby ensuring the performance and stability of the capacitor.

[0078] In some embodiments, an isolation plate 41 is disposed in the protective cover 4 , and the isolation plate 41 divides the protective cover 4 into a plurality of isolation zones for isolating a plurality of connecting plates 11 , and a connecting plate 11 is disposed in each isolation zone.

[0079] Since the plurality of connection plates 11 are electrically connected to the body, short circuits may occur between the connection plates 11. In order to prevent the short circuit from affecting the performance and stability of the capacitor, the plurality of connection plates 11 need to be insulated and isolated.

[0080] For example, Figure 1 As shown, the connecting plate 11 includes a first plate 11a, a second plate 11b and a third plate 11c. Figure 7 As shown, two isolation plates 41 are arranged in the protective cover 4, and the two isolation plates 41 divide the protective cover 4 into three isolation areas, which are the first isolation area, the second isolation area and the third isolation area from left to right. Among them, the first plate 11a is arranged in the first isolation area, the second plate 11b is arranged in the second isolation area, and the third plate 11c is arranged in the third isolation area.

[0081] Furthermore, in order to achieve insulation isolation, the isolation plate 41 should be made of insulating material. There are many types of insulating materials, which are not specifically limited here.

[0082] According to the description of the above embodiment, an isolation plate 41 is provided in the protective cover 4, and the isolation plate 41 isolates the protective cover 4 into multiple isolation areas. One connecting plate 11 is provided in one isolation area, and multiple isolation areas are provided to isolate multiple connecting plates 11, so that short circuits between multiple connecting plates 11 can be avoided, thereby ensuring the performance and stability of the capacitor.

[0083] In some embodiments, Figure 8-Figure 10 As shown, a buckle 42 is provided on the protective cover 4 , and the buckle 42 is clamped on the connecting plate 11 . The buckle 42 is used to fix the protective cover 4 to the end cover 1 .

[0084] in, Figure 8 for Figure 7 A partial enlarged view of Fig. 9 It is a top view of the protective cover 4 and the end cover 1 after being assembled in the embodiment of the present application; Fig.10 for Fig. 9 A cross-sectional view taken along direction B; Fig.11 for Fig.10 A partial enlarged view of .

[0085] In some embodiments, Figure 8 As shown, the buckle 42 is arranged on the inner wall of the protective cover 4, and the buckle 42 includes a guide surface 421 and a clamping surface 422. The guide surface 421 is connected below the clamping surface 422, and the guide surface 421 is an inclined surface.

[0086] Combination Fig.10 and Fig.11 From the perspective of the embodiment, since the protective cover 4 is sleeved on the end cover 1 from bottom to top, the connecting plate 11 on the end cover 1 first contacts the guide surface 421 located below, and the guide surface 421 causes the protective cover 4 to move along the guide surface 421 until the clamping surface 422 is clamped under the connecting plate 11. Thus, the protective cover 4 is fixed on the connecting plate 11, even if the protective cover 4 is fixedly connected to the end cover 1, the protective cover 4 is prevented from falling off the end cover 1, and the end cover 1, the connecting plate 11 and the discharge assembly are prevented from being damaged by external forces, thereby ensuring the performance and stability of the capacitor.

[0087] Furthermore, if Fig.10 and Fig.11 As shown, a buckle 42 is provided on each side of the inner wall of the protective cover 4, one buckle 42 is engaged with the first plate 11a, and the other buckle 42 is engaged with the third plate 11c. The buckles 42 are provided on both sides for engagement to enhance the stability of the engagement, thereby further ensuring the performance and stability of the capacitor.

[0088] According to the description of the above embodiment, the buckle 42 provided on the protective cover 4 is snapped onto the connecting plate 11, so that the protective cover 4 is fixed on the connecting plate 11, that is, the protective cover 4 is fixedly connected to the end cover 1, preventing the protective cover 4 from falling off the end cover 1, and preventing the end cover 1, the connecting plate 11 and the discharge assembly from being damaged by external force, thereby ensuring the performance and stability of the capacitor.

[0089] From the above content, we can see that Figure 2 As shown, the end cap 1 is provided with a terminal 2. Correspondingly, as Figure 4 As shown, a wiring hole 43 is opened on the protection cover 4, and the position of the wiring hole 43 corresponds to the wiring terminal 2.

[0090] According to the above content, the terminal 2 is used to connect the system circuit, so that the body is connected to the system circuit, and the body is charged by the system circuit, so that the body has the conditions to store charge and release electric energy. Therefore, in order to prevent the protective cover 4 from affecting the connection between the terminal 2 and the system circuit, it is necessary to open a hole on the protective cover 4 at a position corresponding to the terminal 2.

[0091] Furthermore, if Figure 2 As shown, the terminal 2 in the embodiment of the present application is provided with three terminal 2, respectively connected to Figure 1 The three connecting plates 11 in FIG. Figure 4 As shown, three wiring holes 43 are provided on the protection cover 4, corresponding to the three wiring terminals 2 respectively.

[0092] According to the description of the above embodiment, a wiring hole 43 is provided on the protective cover 4, and the position of the wiring hole 43 corresponds to the wiring terminal 2. Therefore, the protective cover 4 does not affect the connection between the wiring terminal 2 and the system circuit, ensuring that the wiring terminal 2 can be used to connect the system circuit, so that the body has the conditions to store charge and release electric energy.

[0093] In some embodiments, Figure 3 As shown, the protective cover 4 is provided with a heat dissipation hole 44, and the heat dissipation hole 44 is arranged on a side close to the discharge component.

[0094] Since the discharge resistor 3 generates a certain amount of heat during the discharge process, the heat is accumulated in the protective cover 4, so that the discharge resistor 3 is in a high temperature environment. If the discharge resistor 3 works in a high temperature environment for a long time, the service life of the discharge resistor 3 will be affected. Therefore, it is necessary to open a heat dissipation hole 44 at a position corresponding to the discharge resistor 3 on the protective cover 4.

[0095] Further, by Figure 1 and Figure 2 It can be seen that the discharge resistor 3 and the terminal 2 are connected to the two ends of the connecting plate 11 respectively. Figure 3 and Figure 4As shown, the heat dissipation holes 44 and the wiring holes 43 can be respectively arranged on both sides of the protective cover 4 .

[0096] According to the description of the above embodiment, a heat dissipation hole 44 is provided on the protective cover 4, and the position of the wiring hole 43 corresponds to the discharge resistor 3. Therefore, the discharge resistor 3 can be cooled down through the heat dissipation hole 44 during the discharge process, thereby extending the service life of the discharge resistor 3 and ensuring the performance and stability of the capacitor.

[0097] The heat dissipation holes 44 may have various shapes. Two possible structural forms are exemplarily shown below, but they do not constitute a limitation on the technical solution of the present application.

[0098] The first type of heat dissipation hole 44 has a structural form, such as Figure 3 As shown, the heat dissipation holes 44 are strip-shaped holes.

[0099] According to the description of the above embodiments, the strip-shaped holes have a large heat dissipation area and a good heat dissipation effect.

[0100] Furthermore, a plurality of strip holes may be provided according to heat dissipation requirements, and the greater the number of strip holes, the better the heat dissipation effect.

[0101] The second structural form of the heat dissipation hole 44 is a circular hole.

[0102] According to the description of the above embodiment, the shape of the circular hole does not require additional design, so the cost of the circular hole opening mold is lower.

[0103] Furthermore, a plurality of circular holes may be provided according to heat dissipation requirements, and the greater the number of circular holes, the better the heat dissipation effect.

[0104] In summary, the strip holes or circular holes on the protective cover 4 can both achieve heat dissipation of the discharge resistor 3. The strip holes have a large heat dissipation area and a good heat dissipation effect. The shape of the circular holes does not require additional design and has a lower manufacturing cost. The operator can choose according to actual needs.

[0105] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0106] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A capacitor, characterized in that: include: body, end caps and discharge assembly; The end cover is connected to the body; The end cover is provided with a connecting plate, the connecting plate faces away from the body, and the connecting plate is electrically connected to the body; The discharge component is connected to the connection plate, and is used to release the residual charge in the body.

2. The capacitor according to claim 1, characterized in that The connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor and a second discharge resistor; Two ends of the first discharge resistor are connected to the first plate and the second plate respectively; Two ends of the second discharge resistor are connected to the second plate and the third plate respectively.

3. The capacitor according to claim 1, characterized in that The connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; One end of the first discharge resistor is connected to the first board, one end of the second discharge resistor is connected to the third board, and one end of the third discharge resistor is connected to the second board; The other end of the first discharge resistor, the other end of the second discharge resistor, and the other end of the third discharge resistor are connected.

4. The capacitor according to claim 1, characterized in that The connecting plate includes a first plate, a second plate and a third plate, and the discharge assembly includes a first discharge resistor, a second discharge resistor and a third discharge resistor; Two ends of the first discharge resistor are connected to the first plate and the second plate respectively; Two ends of the second discharge resistor are connected to the second plate and the third plate respectively; Two ends of the third discharge resistor are connected to the first plate and the third plate respectively.

5. The capacitor according to any one of claims 1 to 4, characterized in that: It also includes a protective cover, which is buckled on the end cover, and the end cover, the connecting plate and the discharge component cover are arranged in the protective cover.

6. The capacitor according to claim 5, characterized in that An isolation plate is arranged inside the protection cover, and the isolation plate divides the protection cover into a plurality of isolation areas, and one connecting plate is arranged in each isolation area.

7. The capacitor according to claim 5, characterized in that The protective cover is provided with a buckle, and the buckle is buckled on the connecting plate.

8. The capacitor according to claim 5, characterized in that The end cover is provided with a wiring terminal, and the protective cover is provided with a wiring hole, and the position of the wiring hole corresponds to the wiring terminal.

9. The capacitor according to claim 5, characterized in that The protection cover is provided with a heat dissipation hole, and the heat dissipation hole is arranged on a side close to the discharge component.

10. The capacitor according to claim 9, characterized in that The heat dissipation holes are strip holes or circular holes.

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