Multi-combination type power capacitor

Abstract

The utility model discloses a multi-combination type power capacitor which comprises at least two capacitor units, each capacitor unit comprises a plurality of cores which are mutually connected in parallel, two sides of each capacitor unit are respectively provided with a positive electrode leading-out plate and a negative electrode leading-out plate, and positive electrodes and negative electrodes of the plurality of cores are respectively connected with the positive electrode leading-out plate and the negative electrode leading-out plate at the same time. And the positive terminal and the negative terminal are respectively connected with the positive lead-out plate and the negative lead-out plate, and multiple connection use modes are realized through the arrangement of the at least two independent capacitor units, the positive terminal and the negative terminal so as to adapt to different use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a multi-combination power capacitor. Background Art

[0002] As a commonly used component, capacitors are widely used in various electronic devices and circuits. In DC filter circuits, in order to provide a more stable current output, traditional capacitors generally have only two connectors. When facing different usage environments, multiple capacitors need to be prepared for series and parallel connection, which makes their use inconvenient and needs to be improved. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a multi-combination power capacitor to solve the defect that a single capacitor leads to a narrow range of use.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A multi-combination power capacitor comprises at least two capacitor units, wherein the capacitor unit comprises a plurality of cores connected in parallel, a positive lead plate and a negative lead plate are respectively arranged on both sides of the capacitor unit, and the positive and negative electrodes of a plurality of the cores are respectively connected to the positive lead plate and the negative lead plate at the same time;

[0006] A positive terminal and a negative terminal are connected to a positive lead-out plate and a negative lead-out plate, respectively.

[0007] As a further improvement of the present invention, the positive lead-out plate and the negative lead-out plate both include a mounting plate body and a metal plate attached to one side of the mounting plate body, the metal plate forms a plurality of contact points corresponding to the core and is in contact with the core, an external terminal is formed on the mounting plate body, and the external terminal is connected to the positive terminal / negative terminal through a wire.

[0008] As a further improvement of the utility model, the end of the core forms a contact surface, and the middle part of the contact surface is recessed outward to form a contact head.

[0009] As a further improvement of the present invention, the contact point corresponds to the contact surface and the contact head to form a contact surface and a contact groove respectively. When the contact head is inserted into the contact groove, the contact surface and the contact surface are in contact and connected with each other.

[0010] As a further improvement of the present invention, a through hole is provided in the middle of the recess, and the contact head forms a welding point corresponding to the through hole.

[0011] As a further improvement of the present utility model, the positive terminal and the negative terminal both include a wiring core column and a ceramic ring. The lower end of the wiring core column is connected to an external terminal, the ceramic ring is sleeved on the wiring core column, and the wiring core column is connected to the capacitor through the ceramic ring.

[0012] As a further improvement of the present utility model, several of the said cores are arranged in a rectangular pattern.

[0013] As a further improvement of the present utility model, it further includes a housing and an upper cover. The housing is rectangular, and a plurality of the negative terminals are arranged along the length direction of the upper cover.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. By providing at least two separate capacitor units, positive terminals and negative terminals, multiple connection and usage methods are achieved to adapt to different usage requirements;

[0016] 2. By integrating at least two capacitor units, while achieving multiple functions, the usage cost is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the installation of the positive terminal and negative terminal of the present utility model;

[0018] Figure 2 Schematic diagram of the positive terminal of the present utility model;

[0019] Figure 3 Schematic diagram of the capacitor unit of the present utility model;

[0020] Figure 4 Schematic diagram of the installation of the metal plate of the present utility model;

[0021] Figure 5 Schematic diagram of the installation of the core of the present utility model.

[0022] Reference numerals: 1. Core; 2. Capacitor unit; 3. Positive electrode lead-out plate; 4. Negative electrode lead-out plate; 5. Positive terminal; 6. Negative terminal; 7. Mounting plate body; 8. Metal plate; 9. Contact point; 10. External terminal; 11. Contact surface; 12. Contact head; 13. Contact surface; 14. Contact groove; 15. Through hole; 16. Welding point; 17. Wiring core column; 18. Ceramic ring; 19. Housing; 20. Upper cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described in detail below with reference to the drawings and embodiments. The same components are denoted by the same reference numerals.

[0024] As Figures 1-5As shown, a multi-combination power capacitor includes at least two capacitor units 2. In this embodiment, the number of capacitor units 2 is 3, and the capacitor unit 2 includes a plurality of cores 1 connected in parallel. A positive lead plate 3 and a negative lead plate 4 are provided on both sides of the capacitor unit 2, and the positive and negative electrodes of several cores 1 are connected to the positive lead plate 3 and the negative lead plate 4 at the same time.

[0025] Preferably, the positive terminal 5 and the negative terminal 6 are connected to the positive electrode lead-out plate 3 and the negative electrode lead-out plate 4 respectively.

[0026] In one case, three capacitor units 2 can be connected in parallel to form a single capacitor with triple the capacity.

[0027] In another case, three capacitor units 2 may be connected in series to form a triple high voltage capacitor.

[0028] In another case, the three capacitor units 2 can be connected in a diagonal structure to combine three-phase common compensation capacitors, phase compensation or diagonal compensation capacitors.

[0029] In another case, the three capacitor units 2 can be connected in a Y-type structure to form a 1.732 times high voltage three-phase common compensation capacitor.

[0030] In another case, the three capacitor units 2 can be connected into a Y-type neutral line lead-out structure to form an unbalanced phase compensation capacitor.

[0031] In another case, the three capacitor units 2 can be used separately to form a small-capacity independent single-phase compensation capacitor.

[0032] In addition, other connection structures of the three capacitor units 2 should also be included in the protection scope of the present application.

[0033] By providing at least two capacitor units 2, a variety of connection modes can be realized to adapt to different use environments, thereby greatly increasing the scope of use, while effectively reducing the use cost, thereby facilitating use.

[0034] Preferably, the positive lead-out plate 3 and the negative lead-out plate 4 both include a mounting plate body 7 and a metal plate 8 attached to one side of the mounting plate body 7, the mounting plate body 7 is used to connect to the inner cavity of the capacitor, the metal plate 8 forms a plurality of contact points 9 corresponding to the core 1 and is in contact with and connected to the core 1, an external terminal 10 is formed on the mounting plate body 7, and the external terminal 10 is connected to the positive terminal 5 / negative terminal 6 through a wire.

[0035] The metal plate 8 and the external terminal 10 are provided to integrate the ends of the plurality of cores 1 , so as to facilitate the connection between the positive terminal 5 / the negative terminal 6 and the external terminal 10 . Meanwhile, the integration of the core 1 can make the output more stable.

[0036] Preferably, the end of the core 1 forms a contact surface 11 , and the middle of the contact surface 11 is recessed outwards to form a contact head 12 .

[0037] By means of the contact surface 11 and the contact head 12 , the contact surface 11 can be increased to improve the connection stability.

[0038] Preferably, the contact point 9 forms a contact surface 13 and a contact groove 14 corresponding to the contact surface 11 and the contact head 12 respectively. When the contact head 12 is inserted into the contact groove 14, the contact surface 11 and the contact surface 13 contact and communicate with each other.

[0039] Specifically, the abutment surface 13 is formed by the metal plate 8 being recessed inwardly, and the abutment surface 13 and the abutment groove 14 can integrate the core 1 and fix the position of the core 1 at the same time, so that the overall structure is more compact.

[0040] Preferably, a through hole 15 is provided in the middle of the depression, the mounting plate forms a through hole corresponding to the through hole 15 , and the contact head 12 forms a welding point 16 corresponding to the through hole 15 .

[0041] The through hole 15 is provided so that after the contact head 12 is inserted into the abutment groove 14 , the core 1 and the metal plate 8 can be fixed by welding the welding point 16 and the through hole 15 , thereby ensuring the connection stability between the two.

[0042] Preferably, the positive terminal 5 and the negative terminal 6 both include a terminal core 17 and a ceramic ring 18 , the lower end of the terminal core 17 is connected to the external terminal 10 , the ceramic ring 18 is sleeved on the terminal core 17 , and the terminal core 17 is connected to the capacitor through the ceramic ring 18 .

[0043] Specifically, threads are formed on the ceramic ring 18 and the capacitor is connected through the threads. When multiple capacitor units 2 are connected in series, a larger working voltage will be formed, thereby generating a larger current. Therefore, in order to avoid burning due to overheating of the positive terminal 5, the ceramic ring 18 can be used to effectively connect and fix the terminal core column 17 to avoid melting of the surrounding area due to excessive temperature of the terminal core column 17.

[0044] Preferably, a plurality of cores 1 are arranged in a rectangular shape.

[0045] The core 1 can be accommodated in a rectangular arrangement to the maximum extent possible, thereby making the overall structure more compact and reducing space requirements.

[0046] Preferably, it further includes a shell 19 and an upper cover 20 , the shell 19 is rectangular, and a plurality of negative terminals 6 are arranged along the length direction of the upper cover 20 .

[0047] The rectangular housing 19 and the rectangular arrangement of the cores 1 enable the space in the housing 19 to be used to the maximum extent.

[0048] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A multi-combination power capacitor, characterized in that: It comprises at least two capacitor units (2), the capacitor units (2) comprising a plurality of cores (1) connected in parallel, a positive lead plate (3) and a negative lead plate (4) being respectively provided on both sides of the capacitor unit (2), and the positive poles and negative poles of a plurality of the cores (1) being respectively and simultaneously connected to the positive lead plate (3) and the negative lead plate (4); A positive terminal (5) and a negative terminal (6), wherein the positive terminal (5) and the negative terminal (6) are connected to the positive lead plate (3) and the negative lead plate (4) respectively.

2. A multi-combination power capacitor according to claim 1, characterized in that: The positive lead-out plate (3) and the negative lead-out plate (4) both comprise a mounting plate body (7) and a metal plate (8) attached to one side of the mounting plate body (7); the metal plate (8) forms a plurality of contact points (9) corresponding to the core (1) and is in contact with and connected to the core (1); an external terminal (10) is formed on the mounting plate body (7); the external terminal (10) is connected to the positive terminal (5) / negative terminal (6) via a wire.

3. A multi-combination power capacitor according to claim 2, characterized in that: The end of the core (1) forms a contact surface (11), and the middle of the contact surface (11) is recessed outwards to form a contact head (12).

4. A multi-combination power capacitor according to claim 3, characterized in that: The contact point (9) corresponds to the contact surface (11) and the contact head (12) to form a contact surface (13) and a contact groove (14) respectively; when the contact head (12) is inserted into the contact groove (14), the contact surface (11) and the contact surface (13) are in contact and connected with each other.

5. A multi-combination power capacitor according to claim 4, characterized in that: A through hole (15) is provided in the middle of the recess, and the contact head (12) forms a welding point (16) corresponding to the through hole (15).

6. A multi-combination power capacitor according to claim 2, characterized in that: The positive terminal (5) and the negative terminal (6) both comprise a terminal core post (17) and a ceramic ring (18); the lower end of the terminal core post (17) is connected to an external terminal (10); the ceramic ring (18) is sleeved on the terminal core post (17); and the terminal core post (17) is connected to a capacitor via the ceramic ring (18).

7. A multi-combination power capacitor according to claim 1, characterized in that: A plurality of cores (1) are arranged in a rectangular shape.

8. The multi-combination power capacitor according to claim 1, characterized in that: It also includes a shell (19) and an upper cover (20); the shell (19) is rectangular, and a plurality of negative terminals (6) are arranged along the length direction of the upper cover (20).

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