CN209216803U - A kind of capacitor of high-energy density - Google Patents

Abstract

The utility model provides a kind of capacitor of high-energy density, including shell, at least ten capacitor cores, positive copper sheet, cathode copper sheet, positive terminal and negative terminal, the capacitor core rule close-packed arrays are in shell, at least ten capacitor cores are provided with the first same potential and the second same potential, the anode copper sheet connects the first same potential and positive terminal, the cathode copper sheet connects the second same potential and negative terminal, dozens of capacitor body is first subjected to regular close-packed arrays, it avoids each capacitor from filling a shell to fit together again, make full use of the useful space, copper strips is replaced with copper sheet simultaneously, increase through-flow and heat-sinking capability, to guarantee the performance of capacitor, it is final to realize the purpose for improving energy density.

Description

A kind of capacitor of high-energy density

Technical field

The utility model relates to a kind of capacitors of high-energy density.

Background technique

The growth requirement of power electronic equipment miniaturization, it is desirable that equipment internal component is electric toward miniaturization, integrated development DC bus thin film capacitor accounts for about 1/5 space of power electronic equipment in power electronic equipment.So reducing thin film capacitor Volume increases energy density, is conducive to power electronic equipment toward miniaturization.

Existing power electronic equipment generally uses single or several capacitor body direct-assemblings with DC bus capacitance DC bus capacitance is constituted at a capacitor, then tens monolithic capacitor series and parallel compositions.Single capacitor includes single A or several capacitor bodies, a pair of of leading-out terminal, plastic stent, insulating materials, circle aluminum hull and Embedding Material composition.Capacitor Fuse both ends of the surface are directly connected to two leading-out terminals with copper strips, weld and do capacitor body is packed into circle aluminum hull after insulation processing It is interior, then be fixed and insulated with plastic stent and insulating materials, finally fill potting compound.Its energy density is about 0.18J/ cm³

Currently, power electronic equipment in order to reduce volume, just constantly reduces the quantity of DC bus capacitance, but it is straight Flow bus capacitor quantity reduction plant capacity and constant, being equivalent to makes capacitor work in limiting condition, and DC bus is electric There is material, technique, personnel's consistency again in container, it is difficult to ensure that all capacitors all can long-term work, in this way, electric power Electronic equipment just often breaks down, so this thinking cannot fundamentally solve power electronic equipment toward miniaturization.

Utility model content

The purpose of this utility model is to overcome the shortcomings in the prior art, provide a kind of electricity of high-energy density Dozens of capacitor body is first carried out regular close-packed arrays, avoids each capacitor from filling a shell and be assembled in again by container Together, the useful space is made full use of, while replacing copper strips with copper sheet, increases through-flow and heat-sinking capability, to guarantee capacitor Performance, it is final to realize the purpose for improving energy density.

In order to achieve the above object, the utility model uses following scheme:

A kind of capacitor of high-energy density, including shell, at least ten capacitor cores, positive copper sheet, cathode copper sheet, just Extreme son and negative terminal, for the capacitor core rule close-packed arrays in shell, at least ten capacitor cores are provided with the One same potential and the second same potential, the anode copper sheet connect the first same potential and positive terminal, the cathode copper sheet Connect the second same potential and negative terminal.

In one or more embodiments, insulation is provided on the outside of at least ten compact arranged capacitor cores of rule Layer.

In one or more embodiments, Embedding Material is additionally provided between the insulating layer and capacitor core.

In one or more embodiments, the shell forms rectangular aluminum hull.

The utility model has the advantages that the utility model provides a kind of capacitor of high-energy density, first by dozens of capacitor body into The regular close-packed arrays of row, avoid each capacitor from filling a shell and fit together again, make full use of the useful space, use simultaneously Copper sheet replaces copper strips, increases through-flow and heat-sinking capability, thus guarantee the performance of capacitor, it is final to realize the mesh for improving energy density 's.

Detailed description of the invention

Fig. 1 is the schematic diagram of the section structure of the capacitor of the utility model embodiment high-energy density.

Fig. 2 is the structural schematic diagram of the capacitor of the utility model embodiment high-energy density.

Specific embodiment

As follows in conjunction with attached drawing, application scheme is further described:

Embodiment:

Referring to attached drawing 1-2, a kind of capacitor of high-energy density, including shell 1, at least ten capacitor cores 2, positive copper Plate 3, cathode copper sheet 4, positive terminal 5 and negative terminal 6, the regular close-packed arrays of the capacitor core 2 are in shell 1, at least Ten capacitor cores 2 are provided with the first same potential and the second same potential, it is preferable that first same potential is located at capacitance core The right side of son 2, the second same potential are located at the left side of capacitor core 2, and the anode copper sheet 3 connects the first same potential and anode Terminal 5, the cathode copper sheet 4 connect the second same potential and negative terminal 6.

Preferably, it is provided with dozens of capacitor core 2.

Further, the outside of at least ten compact arranged capacitor cores 2 of rule is provided with insulating layer 7.

Further, Embedding Material 8 is additionally provided between the insulating layer 7 and capacitor core 2.

Further, the shell 1 forms rectangular aluminum hull.

The right side of capacitor body 2 and positive copper sheet 3 weld, and the left side of capacitor core 2 and 4 plate of cathode copper weld, The anode copper sheet 3 is drawn out to external circuit by negative terminal 6 and 2 capacity of capacitor core by positive terminal 5, cathode copper sheet 4, 2 surrounding of capacitor core insulating layer 7 and rectangular aluminum shell 1 carry out insulation processing, potting compound 8 of finally casting.

It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder Same, approximate or technology deduction, replacement, improvement for making based on this etc., are regarded as the protection scope of this patent.

Claims (4)

1. a kind of capacitor of high-energy density, which is characterized in that including shell, at least ten capacitor cores, positive copper sheet, bear Pole copper sheet, positive terminal and negative terminal, the capacitor core rule close-packed arrays are in shell, at least ten capacitor cores It is provided with the first same potential and the second same potential, the anode copper sheet connects the first same potential and positive terminal, described Cathode copper sheet connects the second same potential and negative terminal.

2. the capacitor of high-energy density according to claim 1, which is characterized in that at least ten rules are compact arranged Insulating layer is provided on the outside of capacitor core.

3. the capacitor of high-energy density according to claim 2, which is characterized in that the insulating layer and capacitor core it Between be additionally provided with Embedding Material.

4. the capacitor of high-energy density according to claim 1, which is characterized in that the shell forms rectangular aluminium Shell.