CN104966616A - Electric automobile smooth capacitor - Google Patents
Electric automobile smooth capacitor Download PDFInfo
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- CN104966616A CN104966616A CN201510277008.7A CN201510277008A CN104966616A CN 104966616 A CN104966616 A CN 104966616A CN 201510277008 A CN201510277008 A CN 201510277008A CN 104966616 A CN104966616 A CN 104966616A
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- capacitor
- thin copper
- electric vehicle
- copper bar
- polyurethane
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Abstract
The invention discloses an electric automobile smooth capacitor, comprising a main capacitor set, and two leading-out terminals respectively connected to two poles of the main capacitor set; two Y capacitors which are in parallel connection with the main capacitor set after series connection are arranged between the two leading-out terminals; a neutral point leading-out ground terminal is arranged between the two Y capacitors. The main capacitor set is composed of a plurality of capacitor element in parallel connection. The electric automobile smooth capacitor can restrain common mode interference, and has the characteristics of smaller ESR and ESL, and good weather fastness.
Description
Technical field
The present invention relates to a kind of smmothing capacitor used for electric vehicle, belong to capacitor technology field.
Background technology
Along with the development of pure electric automobile, hybrid vehicle, electric automobile electricity container have also been obtained larger development.Except the ultracapacitor of stored electric energy, also there is smmothing capacitor in electric automobile, its main application is level and smooth and in the electric power system of filtering electric automobile various irregular harmonic wave, improves the running environment of electric power system.In actual use, mainly there is following shortcoming in smmothing capacitor used for electric vehicle of the prior art:
1, common mode disturbances can not be suppressed;
2, equivalent series resistance (i.e. ESR) and equivalent series inductance (i.e. ESL) larger;
3, weather-proof poor, namely high temperature resistant and poor performance at low temperatures, the easily moisture absorption, shock resistance are poor;
Be necessary to improve further smmothing capacitor used for electric vehicle of the prior art for above-mentioned shortcoming.
Summary of the invention
The present invention for the deficiency that prior art exists, provides a kind of smmothing capacitor used for electric vehicle, can suppress common mode disturbances just, equivalent series resistance and equivalent series inductance less, and good weatherability.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of smmothing capacitor used for electric vehicle, comprise: main capacitor bank and two exits being connected described main capacitor bank the two poles of the earth respectively, Y capacitance in parallel with described main capacitor bank after being also provided with two series connection between two described exits, for neutral point draws earth terminal between two described Y capacitance.
As the improvement of technique scheme, described main capacitor bank is made up of the capacitor element of multiple parallel connection.
As the improvement of technique scheme, also comprise the capacitor case of edge sealing stack bus bar and the described edge sealing stack bus bar of placement, described main capacitor bank and two described Y capacitance all between described edge sealing stack bus bar and described capacitor case, and are filled with resin perfusion material in described capacitor case;
Described edge sealing stack bus bar comprise stacked setting and respectively as the first thin copper bar of two described exits and the second thin copper bar, isolated insulation layer is provided with between described first thin copper bar and described second thin copper bar, described first thin copper bar and described second thin copper bar are respectively arranged with the first welding copper sheet and the second welding copper sheet, described first welding copper sheet connects a pole of described main capacitor bank, and described second welding copper sheet connects another pole of described main capacitor bank.
As the improvement of technique scheme, described first welding copper sheet and described second welding copper sheet are multiple and one_to_one corresponding, described first welding copper sheet that each group is corresponding and the equal Parallel Symmetric of described second welding copper sheet.
As the improvement of technique scheme, described first thin copper bar one side is fitted with described isolated insulation layer, and described first thin copper bar another side is provided with the first outer insulation; Described second thin copper bar one side is fitted with described isolated insulation layer, and described second thin copper bar another side is provided with the second outer insulation.
As the improvement of technique scheme, described first thin copper bar is provided with multiple first lead-out tablet, and described second thin copper bar is provided with multiple second lead-out tablet, and the quantity of described first lead-out tablet and described second lead-out tablet is equal and match one by one.
As the improvement of technique scheme, described capacitor case is that poly p phenylene sulfide material or makrolon material are made.
As the improvement of technique scheme, described resin perfusion material comprises and is filled in described capacitor case and encapsulates the filling polyurethane material that main capacitor bank, two described Y capacitance and described edge sealing stack bus bar are stated in residence completely, and to be filled in outside described edge sealing stack bus bar and high-temperature-resistant epoxy resin inserts for sealing described capacitor case.Notoriously, described high-temperature-resistant epoxy resin inserts refers to that heat distortion temperature is not less than the epoxy resin filling material of 150 DEG C.
Present invention also offers the manufacture method of above-mentioned a kind of smmothing capacitor used for electric vehicle, comprise the following steps:
Step one, polyurethane A is expected that polyurethane B material puts into A barrel and the B charging basket of Vacuum Resin Dosing Equipment respectively, open and stir and heat, the heating-up temperature that polyurethane A expects is set to 65 ~ 70 DEG C, the heating-up temperature that polyurethane B expects is set to 30 ~ 35 DEG C, mixed proportion is set as 100:20, and vacuum degree is set as 90 ~ 95 kPa; Notoriously, the main component that described polyurethane A expects is polyurethane, and the main component that described polyurethane B expects is curing agent;
Step 2, the described capacitor case assembling described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar is put into the vacuum storehouse of Vacuum Resin Dosing Equipment, close into bin gate, vacuumize, inject the polyurethane mixed, polyurethane should not have described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar completely;
Step 3, vacuum breaker, take out the described capacitor case having poured into filling polyurethane material, and solidify 3 hours in the baking oven of 60 ± 3 DEG C;
The good high-temperature-resistant epoxy resin of proportioning is injected in step 4, the described capacitor case that solidified at filling polyurethane material; Particularly, high-temperature-resistant epoxy resin can be poured into the faucal about 1 millimeter place of liquid level lower than described capacitor case;
Step 5, the described capacitor case being filled with High temp. epoxy resins is placed in 35 DEG C ~ 40 DEG C drying room in solidification 8 ~ 24 hours.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
One of the present invention smmothing capacitor used for electric vehicle, increases Y capacitance described in a pair, can suppress common mode disturbances; Described main capacitor bank is many capacitor element compositions in parallel, and uses described edge sealing stack bus bar as exit, can effectively reduce equivalent series resistance and equivalent series inductance; Can ensure that capacitor high-and low-temperature resistance and protection against the tide, freedom from vibration are good, ensure that the weatherability of capacitor to the selection of the particular design of capacitor arrangement and described capacitor case, resin perfusion material.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of a kind of smmothing capacitor used for electric vehicle of the present invention;
Fig. 2 is the perspective view of a kind of smmothing capacitor used for electric vehicle of the present invention;
Fig. 3 is the cross section structure schematic diagram of edge sealing stack bus bar of the present invention.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
As shown in Figure 1 to Figure 3, be one of the present invention smmothing capacitor structural representation used for electric vehicle.One of the present invention smmothing capacitor used for electric vehicle, comprise: main capacitor bank 1 and two exits 2 being connected described main capacitor bank 1 the two poles of the earth respectively, for neutral point draws earth terminal 4 between Y capacitance 3, two described Y capacitance 3 in parallel with described main capacitor bank 1 after being also provided with two series connection between two described exits 2.Particularly, the capacitance of described main capacitor bank 1 is 600 μ F, the capacitance of two described Y capacitance 3 is 0.175 μ F, and two interpolars of described main capacitor bank 1 are also in parallel discharge resistance R, described discharge resistance R is the cement resistor of 120 external k Ω/10 W.
Particularly, described main capacitor bank 1 is made up of the capacitor element of multiple parallel connection; Namely be made up of 8 75 μ F annular shaped capacitor element in parallel, also can be composed in parallel by 4 150 μ F pancake capacitors as an alternative, the total capacitance of described main capacitor bank 1 is 600 μ F.
Further with improvement, also comprise the capacitor case 6 of edge sealing stack bus bar 5 and the described edge sealing stack bus bar 5 of placement, described main capacitor bank 1 and two described Y capacitance 3 all between described edge sealing stack bus bar 5 and described capacitor case 6, and are filled with resin perfusion material in described capacitor case 6; Described edge sealing stack bus bar 5 comprise stacked setting and respectively as the first thin copper bar 51 and the second thin copper bar 52 of two described exits 2, isolated insulation layer 53 is provided with between described first thin copper bar 51 and described second thin copper bar 52, described first thin copper bar 51 and described second thin copper bar 52 are respectively arranged with the first welding copper sheet 54 and the second welding copper sheet 55, described first welding copper sheet 54 connects a pole of described main capacitor bank 1, and described second welding copper sheet 55 connects another pole of described main capacitor bank 1; Described first welding copper sheet 54 and described second welding copper sheet 55 are multiple and one_to_one corresponding, described first welding copper sheet 54 that each group is corresponding and described second welding copper sheet 55 all Parallel Symmetrics.Further, described first thin copper bar 51 one side is fitted with described isolated insulation layer 53, and described first thin copper bar 51 another side is provided with the first outer insulation 56; Described second thin copper bar 52 one side is fitted with described isolated insulation layer 53, and described second thin copper bar 52 another side is provided with the second outer insulation 57.Concrete optimally described first thin copper bar 51 is provided with multiple first lead-out tablet 21, and described second thin copper bar 52 is provided with multiple second lead-out tablet 22, and the quantity of described first lead-out tablet 21 and described second lead-out tablet 22 is equal and match one by one.Two described exits 2 have four groups: P1-N1, P2-N2, P3-N3, P4-N4, namely have 4 described first lead-out tablets 21 and 4 described second lead-out tablets 22.
Described capacitor case 6 is made for poly p phenylene sulfide material or makrolon material, and merged by 5 parallel square cabins and form, a cabin holds 2 described Y capacitance 3; As described in main capacitor bank 1 be made up of 8 75 μ F annular shaped capacitor element in parallel time, remain the annular shaped capacitor element of 4 each accommodations in cabin, 2 75 μ F; As described in main capacitor bank 1 composed in parallel by 4 150 μ F pancake capacitors time, remain the pancake capacitor element of 4 each accommodations in cabin, 1 150 μ F.Particularly, described resin perfusion material comprises and is filled in described capacitor case 6 and encapsulates the filling polyurethane material that main capacitor bank 1, two described Y capacitance 3 and described edge sealing stack bus bar 5 are stated in residence completely, and to be filled in outside described edge sealing stack bus bar 5 and high-temperature-resistant epoxy resin inserts for sealing described capacitor case 6.
The manufacture method of above-mentioned smmothing capacitor a kind of used for electric vehicle comprises the following steps:
Step one, polyurethane A is expected that polyurethane B material puts into A barrel and the B charging basket of Vacuum Resin Dosing Equipment respectively, open and stir and heat, the heating-up temperature that polyurethane A expects is set to 65 ~ 70 DEG C, the heating-up temperature that polyurethane B expects is set to 30 ~ 35 DEG C, mixed proportion is set as 100:20, and vacuum degree is set as 90 ~ 95 kPa;
Step 2, the described capacitor case assembling described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar is put into the vacuum storehouse of Vacuum Resin Dosing Equipment, close into bin gate, vacuumize, inject the polyurethane mixed, polyurethane should not have described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar completely;
Step 3, vacuum breaker, take out the described capacitor case having poured into filling polyurethane material, and solidify 3 hours in the baking oven of 60 ± 3 DEG C;
The good high-temperature-resistant epoxy resin of proportioning is injected in step 4, the described capacitor case that solidified at filling polyurethane material; Perfusion high-temperature-resistant epoxy resin is to the faucal about 1 millimeter place of liquid level lower than described capacitor case;
Step 5, the described capacitor case being filled with High temp. epoxy resins is placed in 35 DEG C ~ 40 DEG C drying room in solidification 8 ~ 24 hours.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (9)
1. a smmothing capacitor used for electric vehicle, it is characterized in that, comprise: main capacitor bank (1) and two exits (2) being connected described main capacitor bank (1) the two poles of the earth respectively, Y capacitance (3) in parallel with described main capacitor bank (1) after being also provided with two series connection between two described exits (2), for neutral point draws earth terminal (4) between two described Y capacitance (3).
2. a kind of smmothing capacitor used for electric vehicle as claimed in claim 1, is characterized in that, described main capacitor bank (1) is made up of the capacitor element of multiple parallel connection.
3. a kind of smmothing capacitor used for electric vehicle as claimed in claim 1, it is characterized in that, also comprise the capacitor case (6) of edge sealing stack bus bar (5) and the described edge sealing stack bus bar (5) of placement, described main capacitor bank (1) and two described Y capacitance (3) are all positioned between described edge sealing stack bus bar (5) and described capacitor case (6), and are filled with resin perfusion material in described capacitor case (6);
Described edge sealing stack bus bar (5) comprise stacked setting and respectively as the first thin copper bar (51) of two described exits (2) and the second thin copper bar (52), isolated insulation layer (53) is provided with between described first thin copper bar (51) and described second thin copper bar (52), described first thin copper bar (51) and described second thin copper bar (52) are respectively arranged with the first welding copper sheet (54) and the second welding copper sheet (55), described first welding copper sheet (54) connects a pole of described main capacitor bank (1), described second welding copper sheet (55) connects another pole of described main capacitor bank (1).
4. a kind of smmothing capacitor used for electric vehicle as claimed in claim 3, it is characterized in that, described first welding copper sheet (54) and described second welding copper sheet (55) are multiple and one_to_one corresponding, and the equal Parallel Symmetric of copper sheet (55) is welded in described first welding copper sheet (54) and described second corresponding to each group.
5. a kind of smmothing capacitor used for electric vehicle as claimed in claim 3, is characterized in that, described first thin copper bar (51) one side is fitted with described isolated insulation layer (53), and described first thin copper bar (51) another side is provided with the first outer insulation (56); Described second thin copper bar (52) one side is fitted with described isolated insulation layer (53), and described second thin copper bar (52) another side is provided with the second outer insulation (57).
6. a kind of smmothing capacitor used for electric vehicle as claimed in claim 3, it is characterized in that, described first thin copper bar (51) is provided with multiple first lead-out tablet (21), described second thin copper bar (52) is provided with multiple second lead-out tablet (22), and the quantity of described first lead-out tablet (21) and described second lead-out tablet (22) is equal and match one by one.
7. a kind of smmothing capacitor used for electric vehicle as claimed in claim 3, is characterized in that, described capacitor case (6) is made for poly p phenylene sulfide material or makrolon material.
8. a kind of smmothing capacitor used for electric vehicle as claimed in claim 3, it is characterized in that, described resin perfusion material comprises and is filled in described capacitor case (6) and encapsulates the filling polyurethane material that main capacitor bank (1), two described Y capacitance (3) and described edge sealing stack bus bar (5) are stated in residence completely, and to be filled in outside described edge sealing stack bus bar (5) and high-temperature-resistant epoxy resin inserts for sealing described capacitor case (6).
9. the manufacture method of a kind of smmothing capacitor used for electric vehicle as claimed in claim 8, is characterized in that, comprise the following steps:
Step one, polyurethane A is expected that polyurethane B material puts into A barrel and the B charging basket of Vacuum Resin Dosing Equipment respectively, open and stir and heat, the heating-up temperature that polyurethane A expects is set to 65 ~ 70 DEG C, the heating-up temperature that polyurethane B expects is set to 30 ~ 35 DEG C, mixed proportion is set as 100:20, and vacuum degree is set as 90 ~ 95 kPa;
Step 2, the described capacitor case assembling described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar is put into the vacuum storehouse of Vacuum Resin Dosing Equipment, close into bin gate, vacuumize, inject the polyurethane mixed, polyurethane should not have described main capacitor bank, two described Y capacitance and described edge sealing stack bus bar completely;
Step 3, vacuum breaker, take out the described capacitor case having poured into filling polyurethane material, and solidify 3 hours in the baking oven of 60 ± 3 DEG C;
The good high-temperature-resistant epoxy resin of proportioning is injected in step 4, the described capacitor case that solidified at filling polyurethane material;
Step 5, the described capacitor case being filled with High temp. epoxy resins is placed in 35 DEG C ~ 40 DEG C drying room in solidification 8 ~ 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510277008.7A CN104966616A (en) | 2015-05-27 | 2015-05-27 | Electric automobile smooth capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510277008.7A CN104966616A (en) | 2015-05-27 | 2015-05-27 | Electric automobile smooth capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104966616A true CN104966616A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510277008.7A Pending CN104966616A (en) | 2015-05-27 | 2015-05-27 | Electric automobile smooth capacitor |
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| Country | Link |
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| CN (1) | CN104966616A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293406A (en) * | 2016-03-31 | 2017-10-24 | 上海赛特康新能源科技股份有限公司 | Electric drive electricity container and preparation method thereof |
| CN108565117A (en) * | 2018-02-07 | 2018-09-21 | 无锡宸瑞新能源科技有限公司 | A kind of thin film capacitor for electric vehicle of integrated EMC schemes |
| CN109755023A (en) * | 2019-01-31 | 2019-05-14 | 德威(苏州)新能源有限公司 | A kind of modularization capacitor group device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203839198U (en) * | 2014-03-25 | 2014-09-17 | 陈永仁 | DC support capacitor |
| CN203895270U (en) * | 2013-12-31 | 2014-10-22 | 纽茵泰克株式会社 | Built-in housing low-inductive capacitor used for vehicle inverter |
| CN104299775A (en) * | 2014-10-18 | 2015-01-21 | 安徽精新能源科技股份有限公司 | Large-scale ultra-silence capacitor and manufacturing method thereof |
-
2015
- 2015-05-27 CN CN201510277008.7A patent/CN104966616A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203895270U (en) * | 2013-12-31 | 2014-10-22 | 纽茵泰克株式会社 | Built-in housing low-inductive capacitor used for vehicle inverter |
| CN203839198U (en) * | 2014-03-25 | 2014-09-17 | 陈永仁 | DC support capacitor |
| CN104299775A (en) * | 2014-10-18 | 2015-01-21 | 安徽精新能源科技股份有限公司 | Large-scale ultra-silence capacitor and manufacturing method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293406A (en) * | 2016-03-31 | 2017-10-24 | 上海赛特康新能源科技股份有限公司 | Electric drive electricity container and preparation method thereof |
| CN107293406B (en) * | 2016-03-31 | 2023-02-17 | 上海赛特康新能源科技股份有限公司 | Capacitor for electric drive and method for manufacturing the same |
| CN108565117A (en) * | 2018-02-07 | 2018-09-21 | 无锡宸瑞新能源科技有限公司 | A kind of thin film capacitor for electric vehicle of integrated EMC schemes |
| CN109755023A (en) * | 2019-01-31 | 2019-05-14 | 德威(苏州)新能源有限公司 | A kind of modularization capacitor group device |
| CN109755023B (en) * | 2019-01-31 | 2024-03-29 | 德威(苏州)新能源有限公司 | Modularized capacitor bank device |
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Application publication date: 20151007 |
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