CN112821539A - Auxiliary power supply device and power supply system - Google Patents
Auxiliary power supply device and power supply system Download PDFInfo
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- CN112821539A CN112821539A CN202011639940.7A CN202011639940A CN112821539A CN 112821539 A CN112821539 A CN 112821539A CN 202011639940 A CN202011639940 A CN 202011639940A CN 112821539 A CN112821539 A CN 112821539A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
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Abstract
The invention is suitable for the technical field of power supplies, and provides an auxiliary power supply device and a power supply system, wherein the auxiliary power supply device comprises: the power distribution and collection switching unit, the first power converter and the first direct current bus; the power distribution and collection switching unit is used for connecting an alternating current input end with an external alternating current power supply, connecting a direct current input end with a storage battery, connecting a positive output end with a positive input end of the first power supply converter and connecting a negative output end with a negative input end of the first power supply converter; and the positive input end of the first power converter is also used for being connected with an external direct-current power supply through a first direct-current bus, and the output end of the first power converter is used for being connected with a load. Because the power supply of the external direct-current power supply is more guaranteed, the external direct-current power supply is directly connected through the direct-current bus without passing through the power distribution summarizing and switching unit, the power distribution summarizing and switching unit can still normally supply power when in failure, and the reliability and the stability of the device are improved.
Description
Technical Field
The invention belongs to the technical field of power supplies, and particularly relates to an auxiliary power supply device and a power supply system.
Background
The auxiliary power supply system is an independent power supply, can be supplied with power jointly by direct current generated by external alternating current, a photovoltaic system and the like and a storage battery, and can continuously supply power to the load under the condition that the external alternating current is interrupted, so that the normal power utilization of the load is ensured.
In the prior art, external alternating current, direct current and a storage battery are converged by the power distribution summarizing and switching unit and then are supplied to a load through the DC/DC converter, and if the power distribution summarizing and switching unit fails, the whole direct current auxiliary power supply device fails, so that the normal operation of the load is influenced, and the reliability of a power supply system is reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide an auxiliary power supply device and a power supply system, so as to solve the problem that the reliability of the power supply system is reduced due to the failure of the entire auxiliary power supply device caused by the failure of the power distribution aggregation switching unit in the prior art.
A first aspect of an embodiment of the present invention provides an auxiliary power supply device, including: the power distribution and collection switching unit, the first power converter and the first direct current bus;
the power distribution and collection switching unit is used for connecting an alternating current input end with an external alternating current power supply, connecting a direct current input end with a storage battery, connecting a positive output end with a positive input end of the first power supply converter and connecting a negative output end with a negative input end of the first power supply converter;
and the positive input end of the first power converter is also used for being connected with an external direct-current power supply through a first direct-current bus, and the output end of the first power converter is used for being connected with a load.
Optionally, the auxiliary power supply device further includes: a second power converter;
and the positive input end of the second power converter is connected with the positive output end of the power distribution gathering switching unit and the positive input end of the first power converter respectively, the positive input end is also used for being connected with an external direct-current power supply through a first direct-current bus, the negative input end is connected with the negative output end of the power distribution gathering switching unit and the negative input end of the first power converter respectively, the output end is connected with the output end of the first power converter, and the output end is also used for being connected with a load.
Optionally, the auxiliary power supply device further includes: a second DC bus;
and the first end of the second direct current bus is respectively connected with the positive output end of the power distribution summarizing and switching unit and the positive input end of the second power supply converter, and the second end of the second direct current bus is used for being connected with an external direct current power supply.
Optionally, the auxiliary power supply device further includes: a first one-way conduction element and a second one-way conduction element;
the first one-way conduction element is connected in series in the first direct current bus, and the second one-way conduction element is connected in series in the second direct current bus;
the positive electrode of the first unidirectional conduction element is used for being connected with an external direct-current power supply through a first direct-current bus, and the negative electrode of the first unidirectional conduction element is respectively connected with the positive input end of the first power supply converter and the positive output end of the power distribution summarizing and switching unit through the first direct-current bus;
and the positive electrode of the second one-way conduction element is connected with an external direct-current power supply through a second direct-current bus, and the negative electrode of the second one-way conduction element is respectively connected with the positive input end of the second power supply converter and the positive output end of the power distribution summarizing and switching unit through the second direct-current bus.
Optionally, the auxiliary power supply device further includes: a first fuse element and a second fuse element;
the first fuse element is connected in series in the first dc bus, and the second fuse element is connected in series in the second dc bus.
Optionally, the auxiliary power supply device further includes: a third one-way conduction element and a fourth one-way conduction element;
the positive electrode of the third one-way conduction element is connected with the positive output end of the power distribution summarizing and switching unit, the negative electrode of the third one-way conduction element is connected with the positive input end of the first power supply converter, and the negative electrode of the third one-way conduction element is also connected with the negative electrode of the first one-way conduction element through the first direct current bus;
and the positive electrode of the fourth one-way conduction element is connected with the positive output end of the power distribution summarizing and switching unit, the negative electrode of the fourth one-way conduction element is connected with the positive input end of the second power supply converter, and the negative electrode of the fourth one-way conduction element is also connected with the negative electrode of the second one-way conduction element through a second direct current bus.
Optionally, the first power converter and the second power converter are both DC/DC converters.
Optionally, the auxiliary power supply device further includes: a monitoring unit;
the monitoring unit is respectively connected with the power distribution summarizing and switching unit, the first power supply converter and the second power supply converter and is used for monitoring the operation states of the power distribution summarizing and switching unit, the first power supply converter and the second power supply converter.
A second aspect of the embodiments of the present invention provides a power supply system, including the auxiliary power supply apparatus as provided in the first aspect of the embodiments of the present invention.
The embodiment of the invention provides an auxiliary power supply device, which comprises: the power distribution and collection switching unit, the first power converter and the first direct current bus; the power distribution and collection switching unit is used for connecting an alternating current input end with an external alternating current power supply, connecting a direct current input end with a storage battery, connecting a positive output end with a positive input end of the first power supply converter and connecting a negative output end with a negative input end of the first power supply converter; and the positive input end of the first power converter is also used for being connected with an external direct-current power supply through a first direct-current bus, and the output end of the first power converter is used for being connected with a load. The external direct-current power supply is a photovoltaic system, a wind power generation system and the like, and compared with an alternating-current power supply and a direct-current power supply, the power supply of the external direct-current power supply is guaranteed. For example, when the external AC power source is powered off, the power can be supplied by the storage battery, and when the storage battery is exhausted, the external DC power source still can have power. According to the embodiment of the invention, the external direct-current power supply is directly connected through the direct-current bus without passing through the power distribution summarizing and switching unit, the power distribution summarizing and switching unit has faults, or the external alternating-current power supply and the storage battery can still normally supply power when the power is off, so that the reliability and the stability of the device are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic system structure diagram of an auxiliary power supply device according to an embodiment of the present invention;
fig. 2 is a schematic system structure diagram of a second auxiliary power supply device according to an embodiment of the present invention;
fig. 3 is a schematic system structure diagram of a third auxiliary power supply device according to an embodiment of the present invention;
fig. 4 is a schematic system structure diagram of a fourth auxiliary power supply device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, an embodiment of the present invention provides an auxiliary power supply apparatus, including: the power distribution summary switching unit 11, the first power converter 12 and the first direct current bus Lin 1;
a distribution and collection switching unit 11, an alternating current input terminal AC for connecting with an external alternating current power supply, a direct current input terminal BAT for connecting with a storage battery, a positive output terminal connected with a positive input terminal of the first power supply converter 12, and a negative output terminal connected with a negative input terminal of the first power supply converter 12;
the positive input end of the first power converter 12 is also used for being connected with an external direct current power supply through a first direct current bus Lin1, and the output end of the first power converter is used for being connected with a load.
Because the external direct current power supply is a photovoltaic system, a wind power generation system and the like, the power supply of the external direct current power supply is more guaranteed compared with an external alternating current power supply and a storage battery. For example, when the external AC power source is powered off, the power can be supplied by the storage battery, and when the storage battery is exhausted, the external DC power source still can have power. In the embodiment of the invention, the external direct-current power supply is directly connected through the direct-current bus without passing through the power distribution summarizing and switching unit 11, and the power distribution summarizing and switching unit 11 has faults or the external alternating-current power supply and the storage battery can still normally supply power when the power is off, so that the reliability and the stability of the device are improved.
In some embodiments, referring to fig. 2, the auxiliary power supply device may further include: a second power converter 13;
the positive input end of the second power converter 13 is connected to the positive output end of the power distribution aggregation switching unit 11 and the positive input end of the first power converter 12, the positive input end is further used for being connected to an external dc power supply through a first dc bus Lin1, the negative input end is connected to the negative output end of the power distribution aggregation switching unit 11 and the negative input end of the first power converter 12, the output end is connected to the output end of the first power converter 12, and the output end is further used for being connected to a load.
In the embodiment of the invention, a second power converter 13 is further arranged, the second power converter 13 is connected with the first power converter 12 in parallel, and when one of the power converters fails, the auxiliary power supply device can still work normally through the other power converter. The first power converter 12 and the second power converter 13 are connected in parallel and are arranged redundantly, and reliability of the device is improved.
The output end of the first power converter 12 and the output end of the second power converter 13 may be positive and negative, and are connected in parallel.
In some embodiments, referring to fig. 3, the auxiliary power supply device may further include: a second dc bus Lin 2;
a first end of the second dc bus Lin2 is connected to the positive output end of the distribution summary switching unit 11 and the positive input end of the second power converter 13, respectively, and a second end is used for being connected to an external dc power supply.
The second direct-current bus Lin2 and the first direct-current bus Lin1 are arranged in a redundant mode, when one direct-current bus is disconnected, an external direct-current power supply can still supply power through the other direct-current bus, and reliability of the device is improved.
In some embodiments, referring to fig. 4, the auxiliary power supply device may further include: a first unidirectional conductive device D1 and a second unidirectional conductive device D2;
the first one-way conductive element D1 is connected in series in the first direct current bus Lin1, and the second one-way conductive element D2 is connected in series in the second direct current bus Lin 2;
a first one-way conduction element D1, having a positive electrode connected to an external dc power supply through a first dc bus Lin1, and a negative electrode connected to the positive input terminal of the first power converter 12 and the positive output terminal of the power distribution summary switching unit 11 through a first dc bus Lin1, respectively;
and a positive electrode of the second unidirectional conducting element D2 is used for being connected with an external direct-current power supply through a second direct-current bus Lin2, and a negative electrode of the second unidirectional conducting element D2 is respectively connected with a positive input end of the second power converter 13 and a positive output end of the power distribution summary switching unit 11 through a second direct-current bus Lin 2.
In some embodiments, the first unidirectional conducting element D1 and the second unidirectional conducting element D2 can be diodes.
The first unidirectional conductive element D1 and the second unidirectional conductive element D2 are used for isolation, so as to prevent the auxiliary power supply from affecting the external dc power supply.
In some embodiments, referring to fig. 4, the auxiliary power supply device may further include: a first fuse element F1 and a second fuse element F2;
the first fuse element F1 is connected in series in the first dc bus Lin1, and the second fuse element F2 is connected in series in the second dc bus Lin 2.
When the current in the direct current bus is overlarge, the fuse element is automatically fused for protecting the auxiliary power supply device.
In some embodiments, the auxiliary power supply apparatus with reference to fig. 4 may further include: a third unidirectional conductive device D3 and a fourth unidirectional conductive device D4;
a positive electrode of the third one-way conduction element D3 is connected to the positive output end of the distribution aggregation switching unit 11, a negative electrode of the third one-way conduction element D3 is connected to the positive input end of the first power converter 12, and a negative electrode of the third one-way conduction element D3 is connected to the negative electrode of the first one-way conduction element D1 through the first dc bus Lin 1;
the positive electrode of the fourth unidirectional conducting element D4 is connected to the positive output end of the distribution aggregation switching unit 11, the negative electrode of the fourth unidirectional conducting element D4 is connected to the positive input end of the second power converter 13, and the negative electrode of the fourth unidirectional conducting element D4 is also connected to the negative electrode of the second unidirectional conducting element D2 through the second dc bus Lin 2.
In some embodiments, the third unidirectional conducting element D3 and the fourth unidirectional conducting element D4 can be diodes.
The third unidirectional conductive element D3 and the fourth unidirectional conductive element D4 are also used for isolation, so as to prevent the rear-end equipment from affecting the distribution aggregation switching unit 11, thereby improving the safety and reliability of the device.
In some embodiments, the first power converter 12 and the second power converter 13 may each be a DC/DC converter.
In some embodiments, the auxiliary power supply may further include: a monitoring unit;
the monitoring unit is connected with the power distribution summary switching unit 11, the first power converter 12 and the second power converter 13 respectively, and is used for monitoring the operation states of the power distribution summary switching unit 11, the first power converter 12 and the second power converter 13.
Corresponding to any one of the auxiliary power supply devices, an embodiment of the present invention further provides a power supply system, which includes any one of the auxiliary power supply devices and has advantages of the auxiliary power supply device, and details are not repeated herein.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (9)
1. An auxiliary power supply unit, comprising: the power distribution and collection switching unit, the first power converter and the first direct current bus;
the alternating current input end of the power distribution summarizing and switching unit is used for being connected with an external alternating current power supply, the direct current input end of the power distribution summarizing and switching unit is used for being connected with a storage battery, the positive output end of the power distribution summarizing and switching unit is connected with the positive input end of the first power supply converter, and the negative output end of the power distribution summarizing and switching unit is connected with the negative input end of the first power;
the positive input end of the first power converter is also used for being connected with an external direct-current power supply through the first direct-current bus, and the output end of the first power converter is used for being connected with a load.
2. The auxiliary power supply of claim 1, further comprising: a second power converter;
the positive input end of the second power converter is connected with the positive output end of the power distribution gathering and switching unit and the positive input end of the first power converter respectively, the positive input end is also used for being connected with the external direct-current power supply through the first direct-current bus, the negative input end is connected with the negative output end of the power distribution gathering and switching unit and the negative input end of the first power converter respectively, the output end is connected with the output end of the first power converter, and the output end is also used for being connected with the load.
3. An auxiliary power supply as claimed in claim 2, wherein said auxiliary power supply further comprises: a second DC bus;
and a first end of the second direct current bus is connected with the positive output end of the power distribution summary switching unit and the positive input end of the second power supply converter respectively, and a second end of the second direct current bus is used for being connected with the external direct current power supply.
4. An auxiliary power supply as claimed in claim 3, wherein said auxiliary power supply further comprises: a first one-way conduction element and a second one-way conduction element;
the first unidirectional conducting element is connected in series in the first direct current bus, and the second unidirectional conducting element is connected in series in the second direct current bus;
the positive electrode of the first unidirectional conducting element is used for being connected with the external direct-current power supply through the first direct-current bus, and the negative electrode of the first unidirectional conducting element is respectively connected with the positive input end of the first power supply converter and the positive output end of the power distribution summary switching unit through the first direct-current bus;
and the positive electrode of the second one-way conduction element is used for being connected with the external direct-current power supply through the second direct-current bus, and the negative electrode of the second one-way conduction element is respectively connected with the positive input end of the second power supply converter and the positive output end of the power distribution summary switching unit through the second direct-current bus.
5. An auxiliary power supply as claimed in claim 4, wherein said auxiliary power supply further comprises: a first fuse element and a second fuse element;
the first fuse element is connected in series in the first dc bus, and the second fuse element is connected in series in the second dc bus.
6. An auxiliary power supply as claimed in claim 4, wherein said auxiliary power supply further comprises: a third one-way conduction element and a fourth one-way conduction element;
the positive electrode of the third unidirectional conduction element is connected with the positive output end of the power distribution summarizing and switching unit, the negative electrode of the third unidirectional conduction element is connected with the positive input end of the first power supply converter, and the negative electrode of the third unidirectional conduction element is also connected with the negative electrode of the first unidirectional conduction element through the first direct current bus;
and the positive electrode of the fourth one-way conduction element is connected with the positive output end of the power distribution summarizing and switching unit, the negative electrode of the fourth one-way conduction element is connected with the positive input end of the second power supply converter, and the negative electrode of the fourth one-way conduction element is connected with the negative electrode of the second one-way conduction element through the second direct current bus.
7. An auxiliary power supply unit as claimed in any one of claims 2 to 6, wherein said first power converter and said second power converter are both DC/DC converters.
8. An auxiliary power supply unit as claimed in any one of claims 2 to 6, further comprising: a monitoring unit;
the monitoring unit is respectively connected with the power distribution summarizing and switching unit, the first power supply converter and the second power supply converter and is used for monitoring the operation states of the power distribution summarizing and switching unit, the first power supply converter and the second power supply converter.
9. A power supply system comprising the auxiliary power supply apparatus as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011639940.7A CN112821539B (en) | 2020-12-31 | 2020-12-31 | Auxiliary power supply device and power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011639940.7A CN112821539B (en) | 2020-12-31 | 2020-12-31 | Auxiliary power supply device and power supply system |
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| CN112821539B CN112821539B (en) | 2024-01-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709853A (en) * | 2022-03-29 | 2022-07-05 | 西北工业大学 | Power supply system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066684A (en) * | 2013-01-06 | 2013-04-24 | 浙江中碳科技有限公司 | High voltage direct current power supply system |
| CN103701320A (en) * | 2013-12-14 | 2014-04-02 | 苏州市博得立电源科技有限公司 | Circuit structure for voltage conversion between large-sized voltage battery pack and auxiliary power supply |
| CN105490368A (en) * | 2015-12-23 | 2016-04-13 | 中国人民解放军重庆通信学院 | Auxiliary power supply redundant power supply circuit and start-stop control system of UPS |
| CN106532889A (en) * | 2016-12-13 | 2017-03-22 | 山东鲁能智能技术有限公司 | Direct-current power system having parallel battery modules and method |
| WO2018108140A1 (en) * | 2016-12-16 | 2018-06-21 | 台达电子企业管理（上海）有限公司 | Modular power supply system |
| CN211556951U (en) * | 2020-02-27 | 2020-09-22 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Power supply circuit and auxiliary power supply circuit |
-
2020
- 2020-12-31 CN CN202011639940.7A patent/CN112821539B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066684A (en) * | 2013-01-06 | 2013-04-24 | 浙江中碳科技有限公司 | High voltage direct current power supply system |
| CN103701320A (en) * | 2013-12-14 | 2014-04-02 | 苏州市博得立电源科技有限公司 | Circuit structure for voltage conversion between large-sized voltage battery pack and auxiliary power supply |
| CN105490368A (en) * | 2015-12-23 | 2016-04-13 | 中国人民解放军重庆通信学院 | Auxiliary power supply redundant power supply circuit and start-stop control system of UPS |
| CN106532889A (en) * | 2016-12-13 | 2017-03-22 | 山东鲁能智能技术有限公司 | Direct-current power system having parallel battery modules and method |
| WO2018108140A1 (en) * | 2016-12-16 | 2018-06-21 | 台达电子企业管理（上海）有限公司 | Modular power supply system |
| CN211556951U (en) * | 2020-02-27 | 2020-09-22 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Power supply circuit and auxiliary power supply circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709853A (en) * | 2022-03-29 | 2022-07-05 | 西北工业大学 | Power supply system and method |
| CN114709853B (en) * | 2022-03-29 | 2024-03-08 | 西北工业大学 | Power supply system and method |
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| CN112821539B (en) | 2024-01-02 |
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