Electrode positioning structure of direct current support capacitor for new energy automobile

Abstract

The utility model discloses an electrode positioning structure of a direct current support capacitor for a new energy automobile, which relates to the field of thin film capacitors in the field of new energy automobiles and comprises a capacitor plastic shell, a plastic shell guide groove is arranged on the inner wall of the capacitor plastic shell, and an electrode assembly is arranged in the plastic shell guide groove. The electrode assembly comprises a metal connecting block which is slidably connected to the interior of the plastic shell guide groove, the top end of the metal connecting block is fixedly connected with an electrode rod, and the bottom end of the metal connecting block is fixedly connected with a metal elastic piece. According to the utility model, the electrode positioning guide groove and the clamping groove are additionally arranged in the capacitor plastic shell, so that the internal core can meet the positioning size of the electrode after being assembled, and the assembly interference caused by the height of a welding spot after the electrode is welded is prevented by carrying out structure bending optimization on the electrode; therefore, the problem that the positioning size of the electrode is wrong after the inner core of the capacitor is assembled is avoided.

Description

Technical Field

[0001] The utility model relates to the field of film capacitors in the field of new energy vehicles, and in particular to an electrode positioning structure of a DC support capacitor for new energy vehicles. Background Art

[0002] As the concept of environmental protection becomes more popular, the development of new energy vehicles has received more and more attention. In new energy vehicles, DC support capacitors are one of the key electronic components, and their performance directly affects the driving performance and energy efficiency of the vehicle. Therefore, capacitors are produced in large quantities on the market.

[0003] However, the electrodes of the existing DC support capacitors usually have positioning size errors in their internal cores after assembly, which can lead to unstable performance of the capacitors, thereby affecting the driving performance and energy efficiency of the vehicle. Based on this, an electrode positioning structure for a DC support capacitor for new energy vehicles is provided. Utility Model Content

[0004] The purpose of the utility model is to provide an electrode positioning structure for a DC support capacitor for new energy vehicles in order to solve the problem of incorrect positioning size of electrodes after the core inside the container is assembled.

[0005] To achieve the above object, the utility model provides the following technical solution: an electrode positioning structure of a DC support capacitor for a new energy vehicle, comprising a capacitor plastic shell, the inner wall of the capacitor plastic shell is provided with a plastic shell guide groove, the interior of the plastic shell guide groove is provided with an electrode assembly, and the electrode assembly comprises:

[0006] A metal connection block slidably connected to the inner side of the plastic shell guide groove, wherein the top end of the metal connection block is fixedly connected to the electrode rod, and the bottom end of the metal connection block is fixedly connected to the metal spring;

[0007] A capacitor core is clamped between the two groups of metal springs;

[0008] The inner wall of the capacitor plastic shell is fixedly connected with plastic shell clamps at positions on both sides close to the metal connection block, and the plastic shell clamps are used to limit the electrode assembly;

[0009] A limit assembly is provided inside the plastic shell guide groove above the electrode assembly, and the limit assembly includes:

[0010] A storage groove is opened inside the capacitor plastic shell, and the storage groove is symmetrically distributed on both sides of the plastic shell guide groove. The inner wall of the storage groove is fixedly connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly connected with a torsion spring. The other end of the torsion spring is fixedly connected with a limiting rod, and the limiting rod is sleeved on the outside of the rotating shaft and the torsion spring.

[0011] As a further solution of the utility model: the length of the upper part of the plastic shell guide groove matches the length of the metal connection block, and the distance from the inner wall of the plastic shell guide groove to the outer wall of the plastic shell block matches the width of the metal connection block;

[0012] A vertical receiving groove matching the length of the two metal springs is formed at the bottom of the plastic shell guide groove, so as to provide a receiving space for the deformation of the metal springs.

[0013] As a further solution of the utility model: the bottom of the electrode rod is a bent structure, and the upper wall of the bent part is fixedly connected to the upper wall of the metal connecting block, and the bottom wall of the bent part is fitted with the upper wall of the plastic shell block, so as to avoid the problem of assembly interference caused by the height of the welding point after the capacitor core and the electrode rod are welded.

[0014] As a further solution of the utility model: two groups of plastic shell guide grooves are provided and symmetrically distributed at both ends of the inner wall of the capacitor plastic shell, so as to facilitate rapid positioning of the electrode assembly and the capacitor core.

[0015] As a further solution of the present invention: the height of the storage slot matches the length of the limiting rod, and the length of the storage slot is smaller than the height of the limiting rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By adding electrode positioning guide grooves and card slots inside the capacitor plastic shell, the internal core can meet the positioning dimensions of the electrode after assembly. By optimizing the structural bending of the electrode, assembly interference caused by the height of the welding point after electrode welding is prevented, thereby avoiding the problem of incorrect electrode positioning dimensions after the internal core of the capacitor is assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the capacitor plastic case, the electrode assembly and the limit assembly of the utility model;

[0020] Figure 3 It is a cross-sectional view of the connection between the capacitor plastic case and the limiting component of the utility model.

[0021] In the figure: 1. capacitor plastic case; 2. plastic case guide groove; 3. electrode assembly; 301. electrode rod; 302. metal connecting block; 303. metal spring; 4. plastic case clamp block; 5. capacitor core; 6. limit assembly; 601. storage slot; 602. rotating shaft; 603. torsion spring; 604. limit rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 3 In an embodiment of the utility model, an electrode positioning structure of a DC support capacitor for a new energy vehicle includes a capacitor plastic shell 1, an inner wall of the capacitor plastic shell 1 is provided with a plastic shell guide groove 2, an electrode assembly 3 is provided inside the plastic shell guide groove 2, and the electrode assembly 3 includes:

[0024] A metal connection block 302 is slidably connected to the inner side of the plastic shell guide groove 2, the top end of the metal connection block 302 is fixedly connected to the electrode rod 301, and the bottom end of the metal connection block 302 is fixedly connected to the metal spring 303;

[0025] The capacitor core 5 is clamped between the two sets of metal springs 303;

[0026] The inner wall of the capacitor plastic case 1 is fixedly connected with plastic case clamps 4 at both sides near the metal connection block 302, and the plastic case clamps 4 are used to limit the electrode assembly 3;

[0027] A limit assembly 6 is provided inside the plastic shell guide groove 2 above the electrode assembly 3. The limit assembly 6 includes:

[0028] A storage groove 601 is provided inside the capacitor plastic case 1, and the storage grooves 601 are symmetrically distributed on both sides of the plastic case guide groove 2. The inner wall of the storage groove 601 is fixedly connected with a rotating shaft 602, and the outer wall of the rotating shaft 602 is fixedly connected with a torsion spring 603. The other end of the torsion spring 603 is fixedly connected with a limiting rod 604, and the limiting rod 604 is sleeved on the outside of the rotating shaft 602 and the torsion spring 603.

[0029] The bottom of the electrode rod 301 is in a bent structure, and the upper wall of the bent part is fixedly connected to the upper wall of the metal connecting block 302, and the bottom wall of the bent part is in contact with the upper wall of the plastic shell block 4, so that the problem of assembly interference caused by the thickness of the welding point after the capacitor core 5 and the electrode rod 301 are welded can be avoided;

[0030] There are two groups of plastic shell guide grooves 2 , which are symmetrically distributed at both ends of the inner wall of the capacitor plastic shell 1 , so as to facilitate rapid positioning of the electrode assembly 3 and the capacitor core 5 .

[0031] In this embodiment: when the capacitor needs to be assembled, the electrode assembly 3 is first aligned with the inside of the plastic shell guide groove 2 and inserted. At this time, the electrode assembly 3 moves down along the inside of the plastic shell guide groove 2 until the bottom wall of the metal connecting block 302 contacts the upper wall of the limiting rod 604 and squeezes the limiting rod 604, so that the limiting rod 604 rotates and contracts along the inside of the storage groove 601. At this time, the electrode assembly 3 continues to move down until the bottom wall of the electrode rod 301 contacts the upper wall of the plastic shell block 4. At this time, the electrode assembly 3 is no longer in contact with the limiting rod 604. At this time, the torsion spring 603 drives the limiting rod 604 to rotate in the opposite direction and reset. At this time, the reset limiting rod 604 is in a horizontal state, which can align the electrode assembly 3 with the capacitor core 5. Limiting in the vertical direction, the electrode assembly 3 and the external circuit can be welded at this time. After the welding is completed, the two ends of the capacitor core 5 are aligned with the metal springs 303 and inserted along the inside of the capacitor plastic shell 1. During this process, the capacitor core 5 gradually contacts and squeezes the metal springs 303, so that the metal springs 303 shrink along the inside of the plastic shell guide groove 2. During this process, the metal springs 303 are always in close contact with the capacitor core 5. At this time, the capacitor core 5 is quickly positioned. At this time, the resin can be poured into the injection molding through the injection process. Through the cooperation of the above parts, the problem of incorrect positioning size of the electrode after the core inside the container is assembled is solved.

[0032] Please refer to Figures 1-2 , the length of the upper portion of the plastic shell guide groove 2 matches the length of the metal connection block 302, and the distance from the inner wall of the plastic shell guide groove 2 to the outer wall of the plastic shell block 4 matches the width of the metal connection block 302;

[0033] A vertical receiving groove matching the length of the two metal springs 303 is formed at the bottom of the plastic shell guide groove 2 to provide a receiving space for the deformation of the metal springs 303 .

[0034] In this embodiment: In order to achieve rapid positioning of the electrode assembly 3 and the capacitor core 5, a shell guide groove 2 matching the size of the electrode assembly 3 is opened on the inner wall of the capacitor shell 1, so that the electrode assembly 3 only needs to slide along the inside of the shell guide groove 2 to achieve rapid positioning of the electrode assembly 3 and at the same time the electrode assembly 3 cannot move in the left and right directions, a shell clamp 4 is arranged on the inner wall of the capacitor shell 1, and the distance from the outer wall of the shell clamp 4 to the outer wall of the shell guide groove 2 is set to match the width of the metal connecting block 302, so that when the electrode assembly 3 is inserted into the shell guide groove 2, the electrode assembly 3 cannot move in the front and back directions, thereby achieving the purpose of rapid position limitation of the electrode assembly 3 and the capacitor core 5.

[0035] Please refer to Figure 3The height of the storage slot 601 matches the length of the limiting rod 604 , and the length of the storage slot 601 is smaller than the height of the limiting rod 604 .

[0036] In this embodiment: In order to limit the vertical position of the electrode assembly 3 and the capacitor core 5, a limit assembly 6 is arranged inside the capacitor plastic shell 1, and the height of the storage groove 601 is set to be the same as the length of the limit rod 604, so that when the electrode assembly 3 moves downward, it can push the limit rod 604 to rotate and can be completely rotated and retracted to the inside of the storage groove 601, avoiding interference with the downward movement of the electrode assembly 3 and the capacitor core 5, and the length of the storage groove 601 is set to be smaller than the height of the limit rod 604, so that when the limit rod 604 is in a horizontal state, the limit rod 604 can extend to the inside of the plastic shell guide groove 2, thereby limiting the vertical movement of the electrode assembly 3.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrode positioning structure of a DC support capacitor for a new energy vehicle, comprising a capacitor plastic shell (1), characterized in that: The inner wall of the capacitor plastic case (1) is provided with a plastic case guide groove (2), an electrode assembly (3) is provided inside the plastic case guide groove (2), and the electrode assembly (3) comprises: a metal connection block (302) slidably connected to the inside of the plastic case guide groove (2), an electrode rod (301) being fixedly connected to the top end of the metal connection block (302), and a metal spring (303) being fixedly connected to the bottom end of the metal connection block (302); A capacitor core (5) is clamped between the two groups of metal spring sheets (303); Plastic case clamping blocks (4) are fixedly connected to the inner wall of the capacitor plastic case (1) at positions on both sides close to the metal connection block (302), and the plastic case clamping blocks (4) are used to limit the position of the electrode assembly (3); A limit assembly (6) is provided inside the plastic shell guide groove (2) above the electrode assembly (3), the limit assembly (6) comprising: a storage groove (601) provided inside the capacitor plastic shell (1), the storage grooves (601) being symmetrically distributed on both sides of the plastic shell guide groove (2), the inner wall of the storage groove (601) being fixedly connected to a rotating shaft (602), the outer wall of the rotating shaft (602) being fixedly connected to a torsion spring (603), the other end of the torsion spring (603) being fixedly connected to a limit rod (604), the limit rod (604) being sleeved on the outside of the rotating shaft (602) and the torsion spring (603); The length of the upper portion of the plastic shell guide groove (2) matches the length of the metal connection block (302), and the distance from the inner wall of the plastic shell guide groove (2) to the outer wall of the plastic shell clamping block (4) matches the width of the metal connection block (302); a vertical receiving groove matching the length of the two metal springs (303) is formed at the bottom of the plastic shell guide groove (2) to provide a receiving space for the deformation of the metal springs (303); The bottom of the electrode rod (301) is in a bent structure, and the upper wall of the bent portion of the bent structure is fixedly connected to the upper wall of the metal connection block (302), and the bottom wall of the bent portion is in contact with the upper wall of the plastic shell block (4).

2. The electrode positioning structure of a DC support capacitor for new energy vehicles according to claim 1, characterized in that: The plastic shell guide grooves (2) are provided in two groups and are symmetrically distributed at the two ends of the inner wall of the capacitor plastic shell (1), so as to facilitate rapid positioning of the electrode assembly (3) and the capacitor core (5).

3. The electrode positioning structure of a DC support capacitor for new energy vehicles according to claim 1, characterized in that: The height of the storage slot (601) matches the length of the limiting rod (604), and the length of the storage slot (601) is smaller than the height of the limiting rod (604).

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