A high-strength elastic capacitor current-sharing structure and processing method

Abstract

The present invention provides a high-strength elastic capacitor current-sharing structure and a processing method. The capacitor current-sharing structure includes a capacitor current-sharing sheet and a current-sharing bearing plate. The capacitor current-sharing sheet is a metal sheet structure, the bottom of which is fixedly connected to a capacitor group, and the bottom of the capacitor group is grounded through a bottom plate; the current-sharing bearing plate is a metal plate structure, the bottom of which is provided with a welding core, and the current-sharing bearing plate and the capacitor current-sharing sheet are fixed by welding with the welding core. The capacitor current-sharing structure proposed by the present invention can both carry heavier electrical components and reduce capacitor installation stress, and the processing method proposed by the present invention can effectively improve the reliability and life of the capacitor.

Description

Technical Field

[0001] The present invention relates to the field of electrical structure and welding technology, and in particular to a high-strength elastic capacitor current-sharing structure and a processing method thereof. Background Art

[0002] The capacitor current equalizing plate is used to achieve uniform charging and discharging of the capacitor and is an indispensable and important component of the laser. The capacitor current equalizing plate can usually be made of a thin plate of metal material with high conductivity. In the structural design of the laser, if heavier electrical components are installed on the current equalizing plate, the thin plate is easy to deform and affect the position accuracy of the installed object; if a thick current equalizing plate is used to meet the position accuracy of the heavy object, new problems will arise: due to the shape tolerance of the capacitor itself, when multiple capacitors are put together, in order to achieve good electrical contact, the mechanical structure of the capacitor itself will produce great stress, especially in a high-intensity electrical transmission environment, it may explode and be damaged, causing huge safety hazards. Summary of the invention

[0003] The object of the present invention is to provide a high-strength elastic capacitor current-sharing structure and a processing method to solve at least one of the above-mentioned technical problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention provides a high-strength elastic capacitor current-sharing structure, comprising: a capacitor current-sharing sheet and a current-sharing bearing plate, wherein the capacitor current-sharing sheet is a metal sheet structure, the bottom of which is fixedly connected to a capacitor group, and the bottom of the capacitor group is grounded through a bottom plate;

[0005] The current balancing bearing plate is a metal plate-shaped structure with a welding core arranged at the bottom. The current balancing bearing plate and the capacitor current balancing sheet are fixed by welding through the welding core.

[0006] Furthermore, the welding core is a boss structure, and the height of the boss is greater than or equal to the thickness of the capacitor current balancing sheet. The welding core is used to concentrate the welding machine current, and the height of the welding core boss is not less than the thickness of the capacitor current balancing sheet, which can facilitate the drainage of welding current and improve the welding melting effect.

[0007] Furthermore, the capacitor current balancing sheet is a flexible structure, and its edge is deformed by stress, so that the installation stress of the capacitor group can be flexibly eliminated as the edge of the capacitor current balancing sheet warps.

[0008] Furthermore, the thickness ratio of the current balancing bearing plate to the capacitor current balancing sheet is 3:1 to 20:1. The capacitor current balancing sheet is a thin sheet with flexible edges; the current balancing bearing plate is a thick plate used for current balancing and carrying heavy objects.

[0009] Furthermore, the current balancing bearing plate and the capacitor current balancing sheet are both rectangular structures with chamfered corners on all sides, which have beautiful appearance and are easy to assemble.

[0010] Furthermore, bolt holes and through holes are respectively provided at corresponding positions of the current balancing bearing plate and the capacitor current balancing sheet, so as to allow bolts to pass through the current balancing bearing plate and the capacitor current balancing sheet and to be fixedly connected to the capacitor group.

[0011] Furthermore, there are a plurality of welding cores which are evenly arranged in a linear shape in the middle of the bottom surface of the current balancing bearing plate.

[0012] Furthermore, the capacitor current balancing sheet is made of aluminum alloy, brass or copper; and the current balancing bearing plate is made of aluminum alloy.

[0013] In addition, the present invention also discloses a processing method of a high-strength elastic capacitor current-sharing structure, the special feature of which is that the method comprises:

[0014] Step 1) aligning the capacitor current balancing sheet with the outer shape of the current balancing carrier plate, and confirming that the capacitor current balancing sheet is attached to the welding core of the current balancing carrier plate;

[0015] Step 2) welding the capacitor current balancing sheet and the current balancing bearing plate, and adjusting the current and voltage of the resistance welding machine;

[0016] Step 3) During the welding process, the current balancing bearing plate and the capacitor current balancing sheet are squeezed against each other, and the weld core melts between the current balancing bearing plate and the capacitor current balancing sheet to fill the gap and form a weld point, thereby completing the welding of the current balancing bearing plate and the capacitor current balancing sheet.

[0017] Preferably, after step 3), the method further comprises: placing an electrical device on the upper part of the current balancing support plate, and the electrical device charges and discharges the capacitor group through the high-strength elastic capacitor current balancing structure.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects:

[0019] (1) The capacitor current balancing sheet proposed in the present invention has a flexible structure, and its edge deforms with stress, thereby reducing the capacitor installation stress;

[0020] (2) The current-sharing bearing plate proposed by the present invention can bear electrical components with a relatively large deadweight and also has the function of current balancing;

[0021] (3) The present invention proposes processing the weld nugget structure on the current-balanced bearing plate, so that the current is concentrated in the weld nugget during welding, thereby improving the melting effect;

[0022] (4) The processing method of the high-strength elastic capacitor current-sharing structure proposed in the present invention can effectively improve the reliability and life of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the high-strength elastic capacitor current-sharing structure of the present invention.

[0025] Figure 2 for Figure 1 Explosion diagram.

[0026] Figure 3 FIG. 4 is a schematic diagram of the working mechanism of another embodiment of the present invention.

[0027] Figure 4 It is a detailed schematic diagram of another embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the effect of the working method of the high-strength elastic capacitor current-sharing structure of the present invention.

[0029] Reference numerals:

[0030] 1-high strength elastic capacitor current sharing structure; 1.1-current sharing bearing plate; 1.1a-weld core; 1.1b-bolt hole; 1.2-capacitor current sharing sheet; 1.2a-solder point; 1.2b-through hole; 1.2c-board edge; 100-bottom plate; 101-electrical component; 102-capacitor group. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention is further explained below in conjunction with specific implementation modes.

[0035] Example 1

[0036] Example 1

[0037] like Figure 1 and Figure 2 As shown, a high-strength elastic capacitor current-sharing structure 1 proposed in this embodiment includes a capacitor current-sharing sheet 1.2 and a current-sharing bearing plate 1.1.

[0038] The capacitor current balancing sheet 1.2 is a metal sheet structure, the bottom of which is fixedly connected to the capacitor group 102, and the bottom of the capacitor group 102 is grounded through the bottom plate 100;

[0039] The current balancing board 1.1 is a metal plate structure, with a welding core 1.1a at the bottom, and the current balancing board 1.1 and the capacitor current balancing sheet 1.2 are fixed by welding through the welding core 1.1a. There are five welding cores 1.1a, which are evenly arranged in a linear shape in the middle of the bottom surface of the current balancing board 1.1.

[0040] The current-sharing bearing plate 1.1 is a thick plate, which not only bears the current-sharing function but also is used to bear heavy objects. In practice, the plate thickness is enough to support a weight of about 10KG. Therefore, a 6mm aluminum alloy plate with a current-sharing function is designed. The thickness ratio of the current-sharing bearing plate 1.1 to the capacitor current-sharing sheet 1.2 is 3:1 to 20:1. The thickness of the capacitor current-sharing sheet 1.2 is generally 0.5-2mm, and can be specifically set to 0.8mm. The capacitor current-sharing sheet 1.2 can be selected from commonly used conductive materials such as aluminum alloy, brass, copper, etc. according to the situation.

[0041] One pole of the capacitor group 102 is connected to the high-strength elastic capacitor current-sharing structure 1, and the other pole is connected to the bottom plate 100, and the bottom plate 100 is grounded. A certain electrical device 101 charges and discharges the capacitor 102 through the high-strength elastic capacitor current-sharing structure 1. The electrical device 101 is an electrical device with a large deadweight, such as 10kg. When the capacitor group 102 is connected to the high-strength elastic capacitor current-sharing structure 1, it is actually fixed on the capacitor current-sharing sheet 1.2 and connected to the electrical device 101 through the current-sharing carrier plate 1.1.

[0042] Example 2

[0043] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the capacitor current balancing sheet 1.2 is a thin sheet with a flexible structure, and the edge can be deformed by stress. The plate edge 1.2c of the capacitor current balancing sheet 1.2 can be slightly tilted to generate flexibility.

[0044] The current-equalizing bearing plate 1.1 and the capacitor current-equalizing sheet 1.2 are both rectangular structures with chamfered corners on all sides. The high-strength elastic capacitor current-equalizing structure 1 is fixed to form a whole by welding the current-equalizing bearing plate 1.1 and the capacitor current-equalizing sheet 1.2 at the welding point 1.2a. When the capacitor group 102 is fixed, the assembly stress caused by the dimensional tolerance between the capacitors can be eliminated with the flexibility generated by the board edge 1.2c. At the same time, the current-equalizing bearing plate 1.1 and the capacitor current-equalizing sheet 1.2 are welded and fixed. The current-equalizing bearing plate 1.1 is a thick plate with good rigidity. The rigidity of the current-equalizing bearing plate 1.1 allows the current-equalizing bearing plate 1.1 to carry heavier electrical devices 101.

[0045] Example 3

[0046] The difference between this embodiment and embodiment 1 is that the weld core 1.1a is a boss structure, and the height of the boss is greater than or equal to the thickness of the capacitor current balancing sheet 1.2. The weld core 1.1a can also adopt other structures, for example, a truncated cone, a cylinder, a square column, a conical column, a teardrop shape, etc. can all realize the structure of the weld core 1.1a. The weld core is used to concentrate the welding machine current. The height of the weld core boss is not less than the thickness of the capacitor current balancing sheet, which can make it easier to drain the welding current and improve the welding melting effect.

[0047] Example 4

[0048] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that bolt holes 1.1b and through holes 1.2b arranged in two rows are respectively provided at the corresponding positions of the current balancing bearing plate 1.1 and the capacitor current balancing sheet 1.2, and the bolt holes 1.1b and through holes 1.2b are used to allow bolts to pass through the current balancing bearing plate 1.1 and the capacitor current balancing sheet 1.2 and be fixedly connected to the capacitor group 102. The bolts limit the current balancing bearing plate 1.1 and the capacitor current balancing sheet 1.2, and the relative positions of the two are fixed and the shapes are aligned, which is convenient for welding.

[0049] Example 5

[0050] This embodiment discloses a method for processing a high-strength elastic capacitor current-sharing structure, and the method specifically includes:

[0051] Step 1) Process a welding core 1.1a on the current balancing board 1.1, which is in the shape of a thin boss, which can be a boss structure with a diameter of 5mm and a thickness of 1mm. Align the capacitor current balancing sheet 1.2 with the shape of the current balancing board 1.1, and make sure that the capacitor current balancing sheet 1.2 fits on the welding core 1.1a of the current balancing board 1.1;

[0052] Step 2) welding the capacitor current sharing sheet 1.2 and the current sharing carrier plate 1.1, adjusting the current and voltage of the resistance welding machine; the welding current and voltage are adjusted on site according to different welding materials.

[0053] Step 3) During the welding process, the current balancing plate 1.1 and the capacitor current balancing sheet 1.2 are squeezed against each other, and the weld core 1.1a melts between the current balancing plate 1.1 and the capacitor current balancing sheet 1.2 to fill the gap and form a weld point 1.2a, thus completing the welding.

[0054] Step 4) placing an electrical device 101 on the upper part of the current sharing bearing plate 1.1, and the electrical device 101 charges and discharges the capacitor group 102 through the high-strength elastic capacitor current sharing structure 1.

[0055] In the present invention, the specific values ​​of welding current and voltage are not the key factors affecting the welding effect. The key to affecting the welding formation of the high-strength elastic capacitor current-sharing structure 1 lies in the structure of the welding core 1.1a arranged on the current-sharing bearing plate 1.1. The principle of the effect of the high-strength elastic capacitor current-sharing structure and the working method proposed in the present invention can be seen from Figure 5 -a, 5-b are compared to illustrate: If welding is performed without the weld core 1.1a structure, the following will occur Figure 5 -a, the welding current is represented by a curved dotted line, the welding heat affected zone is within the dotted frame, and the welding current will be dispersed to a large area around the welding point. In this case, welding can be completed by adjusting the welding voltage and current parameters, but due to the large welding heat affected zone, the welding melting effect is not obvious, and only shallow melting will occur on the surface of the current equalizing carrier plate 1.1 and the capacitor current equalizing sheet 1.2, resulting in that in actual applications, the current equalizing carrier plate 1.1 and the capacitor current equalizing sheet 1.2 of the high-strength elastic capacitor current equalizing structure 1 are very easy to separate and fall off. The effects of the high-strength elastic capacitor current equalizing structure and working method proposed in the present invention are as follows: Figure 5 -b, the current will be concentrated in the welding core 1.1a. Since the two welding poles of the welding machine will squeeze the workpiece during the welding process, the current equalizing bearing plate 1.1 and the capacitor current equalizing sheet 1.2 will be squeezed against each other during the welding process, and the welding core 1.1a will melt and fill in the gap between the current equalizing bearing plate 1.1 and the capacitor current equalizing sheet 1.2, and the two will be firmly welded together.

[0056] In the present invention, the high-strength elastic capacitor current-sharing structure 1 is fixed to form an integral body by welding the current-sharing bearing plate 1.1 and the capacitor current-sharing sheet 1.2 at the welding point 1.2a. The capacitor current-sharing sheet 1.2 has a certain flexibility, and the assembly stress can be eliminated with the flexibility of the board edge 1.2b; the current-sharing bearing plate 1.1 is a thick plate with good rigidity, forming a capacitor current-sharing structure that can carry heavier electrical components and reduce capacitor installation stress.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-strength elastic capacitor current-sharing structure (1), characterized in that: It includes a capacitor current balancing sheet (1.2) and a current balancing carrier plate (1.1), The capacitor current balancing sheet (1.2) is a metal sheet structure, the bottom of which is fixedly connected to the capacitor group (102), and the bottom of the capacitor group (102) is grounded via a bottom plate (100); The capacitor current balancing sheet (1.2) is a flexible structure, and its edge is deformed by stress; The current balancing bearing plate (1.1) is a metal plate-shaped structure, with a welding core (1.1a) arranged at the bottom, and the current balancing bearing plate (1.1) and the capacitor current balancing sheet (1.2) are fixed by welding through the welding core (1.1a); there are a plurality of welding cores (1.1a), which are evenly arranged linearly in the middle of the bottom surface of the current balancing bearing plate (1.1); the welding core (1.1a) is a boss structure, and the height of the boss is greater than or equal to the thickness of the capacitor current balancing sheet (1.2); the thickness ratio of the current balancing bearing plate (1.1) to the capacitor current balancing sheet (1.2) is 3:1 to 20:1; During welding, the welding current flows through the welding core (1.1a) and the current balancing plate (1.1) and the capacitor current balancing sheet (1.2) are squeezed against each other during the welding process. The welding core (1.1a) melts and fills the gap between the current balancing plate (1.1) and the capacitor current balancing sheet (1.2), and the two are firmly welded together.

2. The high-strength elastic capacitor current-sharing structure according to claim 1, characterized in that: The current balancing bearing plate (1.1) and the capacitor current balancing plate (1.2) are both rectangular structures with chamfered corners on all sides.

3. The high-strength elastic capacitor current-sharing structure according to claim 1 is characterized in that: Bolt holes (1.1b) and through holes (1.2b) are respectively provided at corresponding positions of the current balancing bearing plate (1.1) and the capacitor current balancing sheet (1.2), and are used for allowing bolts to pass through the current balancing bearing plate (1.1) and the capacitor current balancing sheet (1.2) to be fixedly connected to the capacitor group (102).

4. The high-strength elastic capacitor current-sharing structure according to claim 1, characterized in that: The capacitor current balancing sheet (1.2) is made of aluminum alloy, brass or copper; and the current balancing bearing plate (1.1) is made of aluminum alloy.

5. A method for processing the high-strength elastic capacitor current-sharing structure according to claim 1, characterized in that: The method comprises: aligning the capacitor current balancing sheet (1.2) with the current balancing carrier plate (1.1) and attaching it to the welding core (1.1a), aligning the outer shape, and adjusting the current and voltage by a resistance welding machine to perform welding, wherein the current balancing carrier plate (1.1) and the capacitor current balancing sheet (1.2) are squeezed together during the welding process, and the welding core (1.1a) is melted and filled into the gap between the current balancing carrier plate (1.1) and the capacitor current balancing sheet (1.2), and the formed welding point (1.2a) welds the two together.

6. The method for processing the high-strength elastic capacitor current-sharing structure according to claim 5, characterized in that: An electrical device (101) is placed on the upper part of the current-sharing bearing plate (1.1), and the electrical device (101) charges and discharges the capacitor group (102) through the high-strength elastic capacitor current-sharing structure (1).

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