CN206208942U - A kind of DC break down voltage tests lossless Switching Power Supply and charging pile - Google Patents
A kind of DC break down voltage tests lossless Switching Power Supply and charging pile Download PDFInfo
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- CN206208942U CN206208942U CN201621301799.9U CN201621301799U CN206208942U CN 206208942 U CN206208942 U CN 206208942U CN 201621301799 U CN201621301799 U CN 201621301799U CN 206208942 U CN206208942 U CN 206208942U
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- power supply
- main transformer
- electric capacity
- switching power
- break down
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Abstract
Lossless Switching Power Supply and charging pile is tested the utility model discloses a kind of DC break down voltage.The Switching Power Supply includes main transformer, accessory power supply and CAN, accessory power supply is connected to CAN and main transformer is powered, CAN is connected to control main transformer, electric capacity C1 is in series with the primary side ground wire of main transformer, electric capacity C2 is in series with the secondary ground wire of main transformer, electric capacity C3 is in series with the ground wire of CAN, the electric capacity C3 of CAN is parallel with resistance R.Element during the Switching Power Supply can avoid itself circuit in DC break down voltage test is damaged, lossless DC break down voltage test is set to become a reality, ensure that charging pile normally runs, and low cost, dependable performance, it is applied widely, can be applied in many industry and civil electric appliance product and equipment, the quality for improving electric equipment products has very big directive significance.
Description
Technical field
The utility model is related to charging pile field, more particularly to a kind of DC break down voltage to test lossless Switching Power Supply and charging
Stake.
Background technology
Voltage-withstand test or Hi-pot test be international safety certification authority such as：JSI、CSA、VDE、BSI、UL、IEC、TUV
Required must survey project, and product must do before dispatching from the factory and absolutely test, and it is guarantee and the electricity of quality for product
The pointer of gas security.The essence of proof voltage test is when applying one section between test product electrically this unconnected two parts
Between same frequency high pressure, to check whetheing there is insulation breakdown, if there is capacitor class part to be across in insulation to be measured, suggestion uses straight
Stream voltage is tested, but test voltage must be 1.414 times of alternating test voltage.
The Switching Power Supply of charging pile and each test point of voltage-withstand test is carried out as shown in figure 1, carrying out DC break down voltage survey
During examination, the input of Switching Power Supply, output, communication interface plane have electric capacity C1, C2, C3, due to each plane capacitance C1, C2, C3
Of different sizes, when AC or DC voltage-withstand test is carried out, the partial pressure effect of electric capacity C1, C2, C3 may cause one of them to put down
Face insulation breakdown, damages device.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of DC break down voltage and tests lossless switch electricity
Source and charging pile.Element during the Switching Power Supply can avoid itself circuit in DC break down voltage test is damaged, and makes lossless
DC break down voltage test becomes a reality, it is ensured that charging pile normally runs, and low cost, and dependable performance is applied widely, can be very
Applied in many industry and civil electric appliance product and equipment, the quality for improving electric equipment products has very big directive significance.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of DC break down voltage tests lossless Switching Power Supply, including main transformer, accessory power supply and CAN, auxiliary electricity
Source is connected to CAN and main transformer, and CAN is connected to control main transformer, is gone here and there on the primary side ground wire of main transformer
Electric capacity C1 is associated with, electric capacity C2 is in series with the secondary ground wire of main transformer, electric capacity C3 is in series with the ground wire of CAN,
The electric capacity C3 of CAN is parallel with resistance R.
A kind of charging pile, including above-mentioned Switching Power Supply.
The utility model has the advantages that：The Switching Power Supply can avoid itself circuit in DC break down voltage test
In element be damaged, the test of lossless DC break down voltage is become a reality, it is ensured that charging pile normally runs, and low cost, performance
It is reliable, it is applied widely, can be applied in many industry and civil electric appliance product and equipment, for the matter for improving electric equipment products
Amount has very big directive significance.
Brief description of the drawings
Fig. 1 is the theory diagram of existing Switching Power Supply；
The theory diagram of the Switching Power Supply that Fig. 2 is provided for the utility model.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
Embodiment one
As shown in Fig. 2 a kind of lossless Switching Power Supply of DC break down voltage test, including main transformer, accessory power supply and CAN are total
Line, accessory power supply is connected to CAN and main transformer, and CAN is connected to control main transformer, and the primary side of main transformer connects
Electric capacity C1 is in series with ground wire, electric capacity C2 is in series with the secondary ground wire of main transformer, be in series with the ground wire of CAN
Electric capacity C3, the electric capacity C3 of CAN is parallel with resistance R.
The Switching Power Supply can be in itself circuit element avoid being damaged in DC break down voltage test, it is ensured that charging pile
Normal operation.
The formula of capacitor equivalent resistance：Xc = 1/（ω×C）= 1/（2×π×f×C）, wherein, Xc：Electric capacity capacitor value,
ω：Angular frequency, f：Power frequency；C：Capacitance.
DC break down voltage test is carried out according to UL60950 safety test request to the existing Switching Power Supply shown in Fig. 1, when defeated
Enter to CAN AC2500V/DC3535V and export during to CAN AC2500V/DC3535V, equivalent to input and outlet chamber
Electric capacity C1, C2 with the electric capacity C3 between CAN respectively through the earth be in series, due to galvanic frequency f be 0, then by
Above formula can calculate equivalent resistance Xc=1/ between them（ω×C）= 1/（2×π×f×C）= Xc = 1/
（ω×C）= 1/（2×π×0×C）=infinitely great, then input is the electric capacity C1 between the earth and output to the electric capacity C2 between the earth
With CAN is the voltage that the electric capacity C3 between the earth is got（Europe mother's law）, now, easily to CAN electricity
The element on road causes damage or the damage of unrepairable, and this can cause fatal defect to product, and subelement is faced more than it
Boundary's state, and this device cannot distinguish detection, then in real actual motion, this component is just most thin as one
Weak link, is likely to occur life problems and directly contributes the chain reaction of overall or whole machine at any time, causes charging pile to occur tight
The quality accidents of weight.
Likewise, being carried out according to UL60950 safety test request to the Switching Power Supply that the utility model shown in Fig. 2 is provided
DC break down voltage is tested, when being input into CAN AC2500V/DC3535V and exporting to CAN AC2500V/DC3535V,
Because CAN is parallel with resistance R the electric capacity C3 between the earth, CAN the resistance decrease between the earth, with female fixed according to Europe
Rule, the small ohmically voltage of resistance is small, then CAN will diminish the voltage that the electric capacity C3 between the earth is got, only
Want the resistance of resistance R to select appropriate, when DC break down voltage test is carried out to product, component would not be caused to damage or damaged
Wound.
Proved through test of many times, DC break down voltage test is repeated to the Switching Power Supply, be and component and circuit are made
Into damage or damage.
Embodiment two
A kind of charging pile, including the Switching Power Supply described in embodiment one.
Embodiment described above only expresses implementation method of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model the scope of the claims can not be interpreted as, as long as the institute in the form of equivalent or equivalent transformation
The technical scheme of acquisition, all should fall within protection domain of the present utility model.
Claims (2)
1. a kind of DC break down voltage tests lossless Switching Power Supply, it is characterised in that total including main transformer, accessory power supply and CAN
Line, accessory power supply is connected to CAN and main transformer, and CAN is connected to control main transformer, and the primary side of main transformer connects
Electric capacity C1 is in series with ground wire, electric capacity C2 is in series with the secondary ground wire of main transformer, be in series with the ground wire of CAN
Electric capacity C3, the electric capacity C3 of CAN is parallel with resistance R.
2. a kind of charging pile, it is characterised in that including the Switching Power Supply described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301799.9U CN206208942U (en) | 2016-11-30 | 2016-11-30 | A kind of DC break down voltage tests lossless Switching Power Supply and charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301799.9U CN206208942U (en) | 2016-11-30 | 2016-11-30 | A kind of DC break down voltage tests lossless Switching Power Supply and charging pile |
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| Publication Number | Publication Date |
|---|---|
| CN206208942U true CN206208942U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621301799.9U Active CN206208942U (en) | 2016-11-30 | 2016-11-30 | A kind of DC break down voltage tests lossless Switching Power Supply and charging pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019394A (en) * | 2019-05-31 | 2020-12-01 | 联合汽车电子有限公司 | Test circuit, test device and test method for evaluating CAN bus signal quality |
-
2016
- 2016-11-30 CN CN201621301799.9U patent/CN206208942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019394A (en) * | 2019-05-31 | 2020-12-01 | 联合汽车电子有限公司 | Test circuit, test device and test method for evaluating CAN bus signal quality |
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Address after: 518103 2 floor, B3 building, Fuyuan Industrial Zone, Baoan District Fuyong street, Shenzhen, Guangdong Patentee after: Shenzhen Lingkang Technology Co., Ltd. Address before: 518100 2 floor, B3 building, Fuyuan Industrial Zone, Baoan District Fuyong street, Shenzhen, Guangdong Patentee before: Shenzhen Ling Kang technology Limited by Share Ltd |