CN203851051U - Electricity-consuming appliance, power source device and rectifying circuit thereof - Google Patents
Electricity-consuming appliance, power source device and rectifying circuit thereof Download PDFInfo
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- CN203851051U CN203851051U CN201420222168.2U CN201420222168U CN203851051U CN 203851051 U CN203851051 U CN 203851051U CN 201420222168 U CN201420222168 U CN 201420222168U CN 203851051 U CN203851051 U CN 203851051U
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- 239000003990 capacitor Substances 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses an electricity-consuming appliance, a power source device and a rectifying circuit thereof. The rectifying circuit comprises a first alternating current input end, a second alternating current input end, a direct current positive output end and a direct current negative output end. The rectifying circuit is characterized in that the rectifying circuit further comprises a first rectifier bridge and a second bridge rectifier; two input ends of the first rectifier bridge are respectively connected with the first alternating current input end; two input ends of the second bridge rectifier are respectively connected with the second alternating current input end; the positive output end of the first rectifier bridge and the positive output end of the second rectifier bridge are respectively connected with the direct current positive output end; and the negative output end of the first rectifier bridge and the negative output end of the second rectifier bridge are respectively connected with the direct current negative output end. With the electricity-consuming appliance, the power source device and the rectifying circuit thereof of the technical schemes of the utility model adopted, current equalization and heat balance between the two rectifier bridges can be realized.
Description
Technical field
The utility model relates to field of power electronics, especially relates to a kind of power consumption equipment, supply unit and rectification circuit thereof.
Background technology
Along with scientific and technological development, the power demand of power consumption equipment progressively increases, the power output of single power consumption equipment is also at rapid growth, and the rectifier bridge that AC-input voltage is rectified into direct voltage is owing to being subject to the limitation of the problems such as PN junction band live stream, withstand voltage, heat radiation, design engineers often realize large electric current and radiating requirements by simple parallel form, as shown in Figure 1.
Although simple parallel form is applied than single rectifier bridge above, electric current promotes to some extent, and it has the following disadvantages:
One, because the encapsulation of different rectifier bridges is inconsistent, cause the parameter differences of diode in rectifier bridge larger, and, the cabling of different rectifier bridges on pcb board is difficult to preserved symmetry, thereby make two simple parallel connections of diode in different rectifier bridges cannot realize effective current-sharing, thereby cause a diode temperature in rectifier bridge higher;
Two, more high pressure drop is lower for the temperature of diode, and the rectifier bridge temperature that electric current is large like this can be higher than another, and then electric current can be increased again, causes vicious circle.
Utility model content
The technical problems to be solved in the utility model is, for above-mentioned two simple rectifier bridges in parallel of the prior art, cannot realize current-sharing and thermally equilibrated defect, a kind of current-sharing and thermally equilibrated rectification circuit and the power consumption equipment that comprises this rectification circuit and supply unit realized is provided.
The utility model solves the technical scheme that its technical problem adopts: the rectification circuit of constructing a kind of power consumption equipment, comprise the first ac input end, the second ac input end, direct current positive output end and direct current negative output terminal, comprise the first rectifier bridge and the second rectifier bridge, two inputs of described the first rectifier bridge connect respectively described the first ac input end, two inputs of described the second rectifier bridge connect respectively described the second ac input end, the positive output end of the positive output end of described the first rectifier bridge and described the second rectifier bridge is connected respectively described direct current positive output end, the negative output terminal of the negative output terminal of described the first rectifier bridge and described the second rectifier bridge is connected respectively described direct current negative output terminal.
The utility model is also constructed a kind of power consumption equipment, it is characterized in that, comprises above-described rectification circuit.
In power consumption equipment described in the utility model, described power consumption equipment also comprises electric capacity of voltage regulation, and described electric capacity of voltage regulation is connected between the direct current positive output end and direct current negative output terminal of described rectification circuit.
In power consumption equipment described in the utility model, described power consumption equipment also comprises fuse, one end of described fuse connects the first ac input end of described rectification circuit, the other end of described fuse connects the first end of AC power, and the second end of described AC power connects the second ac input end of described rectification circuit.
In power consumption equipment described in the utility model, described power consumption equipment also comprises filter capacitor, and described filter capacitor is connected between first ac input end and the second ac input end of described rectification circuit.
The utility model is also constructed a kind of supply unit, it is characterized in that, comprises above-described rectification circuit.
In supply unit described in the utility model, described supply unit also comprises electric capacity of voltage regulation, and described electric capacity of voltage regulation is connected between the direct current positive output end and direct current negative output terminal of described rectification circuit.
In supply unit described in the utility model, described supply unit also comprises fuse, one end of described fuse connects the first ac input end of described rectification circuit, the other end of described fuse connects the first end of AC power, and the second end of described AC power connects the second ac input end of described rectification circuit.
In supply unit described in the utility model, described supply unit also comprises filter capacitor, and described filter capacitor is connected between first ac input end and the second ac input end of described rectification circuit.
Implement the technical solution of the utility model, when using this rectification circuit to carry out rectification to the input voltage of AC power, because two diodes in same rectifier bridge are first in parallel, connect with two diodes that are in parallel in another rectifier bridge again, therefore, the electric current that flows through two rectifier bridges is just the same, can between two rectifier bridges, realize fully uniform-flow and heat balance.And for single rectifier bridge, owing to being two diodes in parallels in same encapsulation, these two diode parameters are consistent, and cabling is also symmetry, therefore, their temperature almost approaches, and the pressure drop of diode is also substantially the same, can effectively divide equally electric current.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the circuit diagram of a kind of power consumption equipment of prior art;
Fig. 2 is the circuit diagram of the utility model power consumption equipment embodiment mono-.
Embodiment
Fig. 2 is the circuit diagram of the utility model power consumption equipment embodiment mono-, and this power consumption equipment includes fuse F1, filter capacitor CX1, rectification circuit and electric capacity of voltage regulation C3.Wherein, rectification circuit comprises the first ac input end X, the second ac input end Y, direct current positive output end O, direct current negative output terminal P, the first rectifier bridge B3 and the second rectifier bridge B4.One end of fuse F1 connects the first end L of AC power, and the other end of fuse F1 connects the first ac input end X of rectification circuit, and the second end of AC power connects the second ac input end Y of rectification circuit.Filter capacitor CX1 is connected between the first ac input end X and the second ac input end Y of rectification circuit.Electric capacity of voltage regulation C3 is connected between the direct current positive output end O and direct current negative output terminal P of rectification circuit.In addition, when this power consumption equipment work, between the direct current positive output end O of rectification circuit and direct current negative output terminal P, be connected with load.
About rectification circuit, two inputs of the first rectifier bridge B3 connect respectively the first ac input end X, two inputs of the second rectifier bridge B4 connect respectively the second ac input end Y, the positive output end of the positive output end of the first rectifier bridge B3 and the second rectifier bridge B4 is connected respectively direct current positive output end O, and the negative output terminal of the negative output terminal of the first rectifier bridge B3 and the second rectifier bridge B4 is connected respectively direct current negative output terminal P.In this embodiment, the first rectifier bridge B3 is comprised of diode D1, D2, D3, D4, and, the negative pole of the positive pole of the negative pole of the positive pole of diode D1, diode D4, diode D2 and diode D3 is connected respectively the first ac input end X, the negative pole of the negative pole of diode D1 and diode D2 is connected respectively direct current positive output end O, and the positive pole of the positive pole of diode D3 and diode D4 is connected respectively direct current negative output terminal P.The second rectifier bridge B4 is comprised of diode D5, D6, D7, D8, and, the negative pole of the positive pole of the negative pole of the positive pole of diode D5, diode D8, diode D6 and diode D7 is connected respectively the second ac input end Y, the negative pole of the negative pole of diode D5 and diode D6 is connected respectively direct current positive output end O, and the positive pole of the positive pole of diode D7 and diode D8 is connected respectively direct current negative output terminal P.
The following describes the operation principle of this power consumption equipment: at the positive half cycle of AC power input voltage, electric current flows to the second end N of AC power through first end L, the fuse F1 of AC power, two diode D1, D2 in parallel, load (not shown), two diode D7, D8 in parallel; At the negative half period of AC power input voltage, electric current flows to the first end L of AC power through the second end N of AC power, two diode D5, D6 in parallel, load (not shown), two diode D3, D4 in parallel, fuse F1.In addition, filter capacitor CX1 carries out filtering to the input voltage of AC power, and the direct voltage of electric capacity of voltage regulation C3 after to rectification carries out voltage stabilizing.
When using this rectification circuit to carry out rectification to the input voltage of AC power, because two diodes in same rectifier bridge are first in parallel, connect with two diodes that are in parallel in another rectifier bridge again, therefore, the electric current that flows through two rectifier bridges is just the same, can between two rectifier bridges, realize fully uniform-flow and heat balance.And for single rectifier bridge, owing to being two diodes in parallels in same encapsulation, these two diode parameters are consistent, and cabling is also symmetry, therefore, their temperature almost approaches, and the pressure drop of diode is also substantially the same, can effectively divide equally electric current.
Following table is the temperature test result to the rectification circuit in Fig. 1 and Fig. 2 respectively, as can be seen from the results, in identical condition (25 ℃ of ambient temperatures, AC-input voltage is 220V, power output is 1800W) under, the rectification circuit in Fig. 1 is simple form in parallel because two rectifier bridges adopt, and causes effectively current-sharing, finally make more than the temperature of two rectifier bridges differs 10 degree, reduced to a great extent the performance of part.And rectification circuit in Fig. 2 efficiently solves equal flow problem, make the temperature of two rectifier bridges about the same, can effectively utilize part, reduce cost and solved problem of temperature rise.
In addition, the utility model is also constructed a kind of supply unit, and the circuit structure of this supply unit can, with reference to figure 2, not repeat at this.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes, combination and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.
Claims (9)
1. a rectification circuit, comprise the first ac input end, the second ac input end, direct current positive output end and direct current negative output terminal, it is characterized in that, described rectification circuit comprises the first rectifier bridge and the second rectifier bridge, two inputs of described the first rectifier bridge connect respectively described the first ac input end, two inputs of described the second rectifier bridge connect respectively described the second ac input end, the positive output end of the positive output end of described the first rectifier bridge and described the second rectifier bridge is connected respectively described direct current positive output end, the negative output terminal of the negative output terminal of described the first rectifier bridge and described the second rectifier bridge is connected respectively described direct current negative output terminal.
2. a power consumption equipment, is characterized in that, comprises rectification circuit claimed in claim 1.
3. power consumption equipment according to claim 2, is characterized in that, described power consumption equipment also comprises electric capacity of voltage regulation, and described electric capacity of voltage regulation is connected between the direct current positive output end and direct current negative output terminal of described rectification circuit.
4. power consumption equipment according to claim 2, it is characterized in that, described power consumption equipment also comprises fuse, one end of described fuse connects the first ac input end of described rectification circuit, the other end of described fuse connects the first end of AC power, and the second end of described AC power connects the second ac input end of described rectification circuit.
5. power consumption equipment according to claim 2, is characterized in that, described power consumption equipment also comprises filter capacitor, and described filter capacitor is connected between first ac input end and the second ac input end of described rectification circuit.
6. a supply unit, is characterized in that, comprises rectification circuit claimed in claim 1.
7. supply unit according to claim 6, is characterized in that, described supply unit also comprises electric capacity of voltage regulation, and described electric capacity of voltage regulation is connected between the direct current positive output end and direct current negative output terminal of described rectification circuit.
8. supply unit according to claim 6, it is characterized in that, described supply unit also comprises fuse, one end of described fuse connects the first ac input end of described rectification circuit, the other end of described fuse connects the first end of AC power, and the second end of described AC power connects the second ac input end of described rectification circuit.
9. supply unit according to claim 6, is characterized in that, described supply unit also comprises filter capacitor, and described filter capacitor is connected between first ac input end and the second ac input end of described rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222168.2U CN203851051U (en) | 2014-04-30 | 2014-04-30 | Electricity-consuming appliance, power source device and rectifying circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222168.2U CN203851051U (en) | 2014-04-30 | 2014-04-30 | Electricity-consuming appliance, power source device and rectifying circuit thereof |
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| Publication Number | Publication Date |
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| CN203851051U true CN203851051U (en) | 2014-09-24 |
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| CN201420222168.2U Expired - Lifetime CN203851051U (en) | 2014-04-30 | 2014-04-30 | Electricity-consuming appliance, power source device and rectifying circuit thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165106A1 (en) * | 2014-04-30 | 2015-11-05 | 深圳欧陆通电子有限公司 | Electrical device, power supply device, and rectifier circuit thereof |
| CN110138236A (en) * | 2019-05-27 | 2019-08-16 | 扬州扬杰电子科技股份有限公司 | A kind of new-type rectifier bridge |
| WO2021114417A1 (en) * | 2019-12-13 | 2021-06-17 | 浙江禾川科技股份有限公司 | Power supply system and rectifier circuit thereof |
| WO2023273294A1 (en) * | 2021-06-29 | 2023-01-05 | 杭州米福科技有限公司 | Front-end auxiliary circuit of high-power capacitive load instrument |
-
2014
- 2014-04-30 CN CN201420222168.2U patent/CN203851051U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165106A1 (en) * | 2014-04-30 | 2015-11-05 | 深圳欧陆通电子有限公司 | Electrical device, power supply device, and rectifier circuit thereof |
| CN110138236A (en) * | 2019-05-27 | 2019-08-16 | 扬州扬杰电子科技股份有限公司 | A kind of new-type rectifier bridge |
| CN110138236B (en) * | 2019-05-27 | 2024-01-26 | 扬州扬杰电子科技股份有限公司 | Novel rectifier bridge |
| WO2021114417A1 (en) * | 2019-12-13 | 2021-06-17 | 浙江禾川科技股份有限公司 | Power supply system and rectifier circuit thereof |
| WO2023273294A1 (en) * | 2021-06-29 | 2023-01-05 | 杭州米福科技有限公司 | Front-end auxiliary circuit of high-power capacitive load instrument |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong city of Shenzhen province Baoan District two road Xixiang Street Gushu Xing Hui industrial plant workshop one or two, three (A, B, Xing Hui Science Park building C) Patentee after: SHENZHEN HONOR ELECTRONIC CO.,LTD. Address before: 518000 Guangdong, Shenzhen, Xixiang City, the town of the world on the road No. 111 Fuyuan Industrial City C7 building /C8 building Patentee before: SHENZHEN HONOR ELECTRONIC Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140924 |