CN219164234U - Direct current power supply system with fixed output voltage - Google Patents
Direct current power supply system with fixed output voltage Download PDFInfo
- Publication number
- CN219164234U CN219164234U CN202320056902.1U CN202320056902U CN219164234U CN 219164234 U CN219164234 U CN 219164234U CN 202320056902 U CN202320056902 U CN 202320056902U CN 219164234 U CN219164234 U CN 219164234U
- Authority
- CN
- China
- Prior art keywords
- unit
- battery pack
- direct current
- power supply
- supply system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a direct current power supply system with fixed output voltage, which comprises at least one battery pack and a power module corresponding to each battery pack, wherein: the first end of each battery pack is connected with a corresponding power module, the second end of each battery pack is connected with a direct current bus, and the output of each power module is connected with the direct current bus; the first end of each battery pack is a positive electrode, and the second end of each battery pack is a negative electrode; alternatively, the first end of each battery is a negative electrode and the second end of each battery is a positive electrode. The direct current power supply system with fixed output voltage reduces downstream direct current distribution cost.
Description
Technical Field
The utility model relates to the technical field of power supply equipment, in particular to a direct current power supply system with fixed output voltage.
Background
In the power supply of a data machine room, uninterrupted power supply for 24 hours is required, and in order to improve the reliability of a power supply system, a battery is generally adopted as a backup power supply.
Fig. 1 is a schematic structural diagram of a dc power supply system, as shown in fig. 1, where the dc power supply system includes multiple power modules, multiple battery packs and multiple load branches, the power modules convert input ac power into dc power and output, and the multiple battery packs are connected in parallel to the same dc bus. The power distribution switch, the cable, the server power supply and the like are required to be selected according to the lowest working voltage, the switching capacity is large, the cable is thick, and the downstream direct current power distribution system is high in cost.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the utility model provides a direct current power supply system with fixed output voltage, which can at least partially solve the problems in the prior art.
The utility model provides a direct current power supply system with fixed output voltage, which comprises at least one battery pack and a power module corresponding to each battery pack, wherein:
the first end of each battery pack is connected with a corresponding power module, the second end of each battery pack is connected with a direct current bus, and the output of each power module is connected with the direct current bus; the first end of each battery pack is a positive electrode, and the second end of each battery pack is a negative electrode; alternatively, the first end of each battery is a negative electrode and the second end of each battery is a positive electrode.
Further, the first end of each battery pack is connected with the direct current bus through a corresponding short-circuit protection module.
Further, the short-circuit protection module adopts a diode or a silicon controlled rectifier.
Further, the first end and the second end of each battery pack are respectively provided with an overcurrent protection module.
Further, the overcurrent protection module adopts a fuse or a protection switch.
Further, each battery pack corresponds to a plurality of power modules.
Further, the power module comprises an input filtering unit, an alternating current-direct current conversion unit, an output filtering unit and a charging and discharging unit, wherein the input filtering unit, the alternating current-direct current conversion unit and the output filtering unit are sequentially connected, the charging and discharging unit is connected to a circuit between the alternating current-direct current conversion unit and the output filtering unit, and a first end of a battery pack corresponding to the power module is connected with the charging and discharging unit.
Further, the power module further comprises a backflow prevention unit, and the backflow prevention unit is connected to the output end of the output filtering unit.
Further, the power supply module further comprises a boosting unit, and accordingly, the charging and discharging unit is replaced by a charging unit; the boosting unit is respectively connected with the alternating current-direct current conversion unit and the output filtering unit, and the charging unit is connected to a circuit between the alternating current-direct current conversion unit and the boosting unit.
Further, the boost unit includes an inductor, a switching tube, a diode, and a capacitor, wherein:
the first end of inductance with the first end of exchanging direct current conversion unit links to each other, the second end of inductance with the anodal of diode with the first end of switch tube links to each other respectively, the negative pole of diode with the first end of electric capacity links to each other, the negative pole of diode with the first end of output filter unit links to each other, the second end of switch tube with the second end of electric capacity with the second end of exchanging direct current conversion unit links to each other respectively, the second end of electric capacity with the second end of output filter unit links to each other.
Further, the power module further comprises a voltage regulating unit, and the voltage regulating unit is connected to a line between the boosting unit and the output filtering unit.
The direct current power supply system with fixed output voltage comprises at least one battery pack and power modules corresponding to each battery pack, wherein the first end of each battery pack is connected with the corresponding power module, the second end of each battery pack is connected with a direct current bus, and the output of each power module is connected with the direct current bus; the first end of each battery pack is a positive electrode, and the second end of each battery pack is a negative electrode; or, the first end of each battery pack is a negative electrode, and the second end of each battery pack is a positive electrode, and the battery packs are connected to the power module and are not directly connected in parallel with the direct current bus, so that the voltage of the direct current bus is not limited by the voltage of the battery packs, the voltage of the direct current bus can be adjusted to be a fixed value as required, and a power distribution switch, a cable and the like at the downstream of the direct current bus only need to meet the fixed voltage, thereby reducing the downstream direct current power distribution cost.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic diagram of a dc power supply system according to the prior art according to a first embodiment of the present utility model.
Fig. 2 is a schematic diagram of a dc power supply system with a fixed output voltage according to a second embodiment of the present utility model.
Fig. 3 is a schematic diagram of a dc power supply system with a fixed output voltage according to a third embodiment of the present utility model.
Fig. 4 is a schematic diagram of a dc power supply system with a fixed output voltage according to a fourth embodiment of the present utility model.
Fig. 5 is a schematic diagram of a dc power supply system with a fixed output voltage according to a fifth embodiment of the present utility model.
Fig. 6 is a schematic diagram of a dc power supply system with a fixed output voltage according to a sixth embodiment of the present utility model.
Fig. 7 is a schematic diagram of a dc power supply system with a fixed output voltage according to a seventh embodiment of the present utility model.
Fig. 8 is a schematic diagram of a dc power supply system with a fixed output voltage according to an eighth embodiment of the present utility model.
Fig. 9 is a schematic diagram of a power module according to a ninth embodiment of the present utility model.
Fig. 10 is a schematic diagram of a power module according to a tenth embodiment of the present utility model.
Fig. 11 is a schematic diagram of a power module according to an eleventh embodiment of the present utility model.
Fig. 12 is a schematic diagram of a power module according to a twelfth embodiment of the present utility model.
Fig. 13 is a schematic diagram of a power module according to a thirteenth embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
According to the direct current power supply system with the fixed output voltage, each battery pack is connected to the corresponding power module, and the charging and discharging processes of each battery pack are controlled by the corresponding power module, so that the direct current bus is not affected by the voltage of the battery pack, and the fixed voltage output can be kept. Each battery pack is not connected in parallel with the same direct current bus, so that the single battery pack can be subjected to charge and discharge test respectively, and the battery packs are free from the problems of overcharge and overdischarge and inter-pack current sharing.
Fig. 2 is a schematic diagram of a dc power supply system with a fixed output voltage according to a second embodiment of the present utility model, as shown in fig. 2, where the dc power supply system with a fixed output voltage according to an embodiment of the present utility model includes at least one battery pack 1 and a power module 2 corresponding to each battery pack 1, and in which:
the first end of each battery pack 1 is connected with a corresponding power module 2, the second end of each battery pack 1 is connected with a direct current bus, and the output of each power module 1 is connected with the direct current bus; wherein, the first end of each battery pack 1 is a positive electrode, and the second end of each battery pack 1 is a negative electrode; alternatively, the first end of each battery 1 is a negative electrode, and the second end of each battery 1 is a positive electrode.
Specifically, the input end of the power module 2 is connected with three-phase alternating current, such as mains supply, and converts the three-phase alternating current into direct current to supply to a direct current bus, and the direct current bus supplies power to a load. The power module 2 may charge the corresponding battery pack 1. When the three-phase alternating current externally connected with the power module 2 is disconnected, the battery pack 1 replaces the corresponding power module 2 to provide direct current for the direct current bus. When the first end of the battery pack 1 is the positive electrode, the second end of the battery pack 1 is the negative electrode, and the second end of the battery pack 1 is connected with the negative electrode of the direct current bus; when the first end of the battery pack 1 is the negative electrode, the second end of the battery pack 1 is the positive electrode, and the second end of the battery pack 1 is connected with the positive electrode of the direct current bus.
When the direct current power supply system with fixed output voltage works normally, the power module 2 converts external alternating current into direct current to supply the direct current to a direct current bus; when the external alternating current stops supplying power due to abnormal conditions such as power failure, tripping and the like, the battery pack 1 supplies power to the direct current bus, so that the load connected with the direct current bus is ensured to be continuously powered off.
For example, as shown in fig. 3, the first end of the battery pack 1 is a positive electrode, and the first end of the battery pack 1 is connected to the corresponding power module 2; the second end of the battery pack 1 is a negative electrode, and the second end of the battery pack 1 is connected with the negative electrode of the direct current bus. The number of the power modules 2 corresponding to the battery pack 1 may be m, m is a positive integer, and specific values of m are set according to actual needs, for example, positive integers such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc., which are not limited in the embodiment of the present utility model. The direct current bus can supply power to n loads (loads), the specific value of n is set according to actual needs, and the embodiment of the utility model is not limited.
For example, as shown in fig. 4, the first end of the battery pack 1 is a negative electrode, and the first end of the battery pack 1 is connected to the corresponding power module 2; the second end of the battery pack 1 is an anode, and the second end of the battery pack 1 is connected with the anode of the direct current bus. The number of the power modules 2 corresponding to the battery pack 1 may be n, where n is a positive integer, and the number of the power modules 2 corresponding to the battery pack 1 is set according to actual needs, for example, positive integers such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc., which are not limited in the embodiment of the present utility model. The direct current bus can supply power to n loads (loads), the specific value of n is set according to actual needs, and the embodiment of the utility model is not limited.
The direct current power supply system with fixed output voltage comprises at least one battery pack and power modules corresponding to each battery pack, wherein the first end of each battery pack is connected with the corresponding power module, the second end of each battery pack is connected with a direct current bus, and the output of each power module is connected with the direct current bus; the first end of each battery pack is a positive electrode, and the second end of each battery pack is a negative electrode; or, the first end of each battery pack is a negative electrode, and the second end of each battery pack is a positive electrode, and the battery packs are connected to the power module and are not directly connected in parallel with the direct current bus, so that the voltage of the direct current bus is not limited by the voltage of the battery packs, the voltage of the direct current bus can be adjusted to be a fixed value as required, and a power distribution switch, a cable and the like at the downstream of the direct current bus only need to meet the fixed voltage, thereby reducing the downstream direct current power distribution cost. In addition, the power module corresponding to each battery pack can perform independent charge and discharge management on the battery pack. The battery pack can be used for power supply regulation of the power grid, namely peak clipping and valley filling of power supply of the power grid are achieved, and electric charge is saved.
Fig. 5 is a schematic diagram of a dc power supply system with a fixed output voltage according to a fifth embodiment of the present utility model, as shown in fig. 5, further, on the basis of the above embodiments, a first end of each battery pack 1 is connected to the dc bus through a corresponding short-circuit protection module 3. The short-circuit protection module 3 arranged between the battery pack 1 and the direct current bus can improve the short-circuit current capacity of the system, shorten the short-circuit protection action time when a downstream load circuit is short-circuited, and quickly isolate short-circuit faults. The short-circuit protection module 3 may be a diode or a thyristor, and is selected according to actual needs, which is not limited in the embodiment of the present utility model.
For example, the short-circuit protection module 3 employs a diode D1. As shown in fig. 6, the first end of the battery pack 1 is a positive electrode, the first end of the battery pack 1 is connected to the positive electrode of the corresponding first diode D1, and the negative electrode of the first diode D1 is connected to the negative electrode of the dc bus. As shown in fig. 7, the first end of the battery pack 1 is a negative electrode, the first end of the battery pack 1 is connected to the negative electrode of the corresponding first diode D1, and the positive electrode of the first diode D1 is connected to the positive electrode of the dc bus.
Fig. 8 is a schematic diagram of a dc power supply system with a fixed output voltage according to an eighth embodiment of the present utility model, as shown in fig. 8, further, on the basis of the above embodiments, the first end and the second end of each battery pack 1 are respectively provided with an overcurrent protection module 4, that is, an overcurrent protection module 4 is disposed between the first end of each battery pack and the corresponding power module 2, and an overcurrent protection module 4 is disposed between the first end of each battery pack and the corresponding dc bus. Short-circuit current or overload current in the circuit is suppressed by the overcurrent protection module 4. The overcurrent protection module 4 may be a fuse or a protection switch, and is selected according to actual needs, which is not limited in the embodiment of the present utility model.
Further, on the basis of the above embodiments, each battery pack 1 corresponds to one or more power modules 2. The specific number of the power modules 2 corresponding to each battery pack 1 is set according to actual needs, and the embodiment of the utility model is not limited.
Fig. 9 is a schematic diagram of a power module according to a ninth embodiment of the present utility model, as shown in fig. 9, further, based on the foregoing embodiments, the power module 2 includes an input filter unit 21, an ac-dc conversion unit 22, an output filter unit 23, and a charge-discharge unit 24, where the input filter unit 21, the ac-dc conversion unit 22, and the output filter unit 23 are sequentially connected, the charge-discharge unit 24 is connected to a line between the ac-dc conversion unit 22 and the output filter unit 23, and a first end of the battery pack 1 corresponding to the power module 2 is connected to the charge-discharge unit 24.
Specifically, the input of the input filtering unit 21 is connected to a three-phase alternating current, for filtering electromagnetic interference in the alternating current. The ac/dc conversion unit 22 is used for converting input ac power into dc power and outputting the dc power. The output filter unit 23 is used for eliminating electromagnetic interference in the input direct current. The positive pole output end of the output filter unit 23 is connected with the positive pole of the direct current bus, and the negative pole output end of the output filter unit 23 is connected with the negative pole of the direct current bus. When the power module 2 charges the battery pack 1, the charge-discharge unit 24 converts the input direct current into a current for charging the battery pack 1; when the battery pack 1 supplies power to the dc bus, the charge/discharge unit 24 converts and outputs dc power from the battery pack 1.
When the first end of the battery pack 1 corresponding to the power module 2 is the positive electrode, the positive electrode output end X of the alternating current-direct current conversion unit 22 is connected with the first end of the battery pack 1 through the charging and discharging unit 24, and the negative electrode output end Y of the alternating current-direct current conversion unit 22 is connected with the second end of the battery pack 1 through the charging and discharging unit 24 and the negative electrode of the direct current bus, and the second end of the battery pack 1 is connected with the negative electrode of the direct current bus; when the first end of the battery pack 1 corresponding to the power module 2 is the negative electrode, the negative electrode output end Y of the ac/dc conversion unit 22 is connected to the first end of the battery pack 1 through the charging/discharging unit 24, and the negative electrode output end Y of the ac/dc conversion unit 22 is connected to the second end of the battery pack 1 through the charging/discharging unit 24 and the negative electrode of the dc bus, and the second end of the battery pack 1 is connected to the positive electrode of the dc bus.
Fig. 10 is a schematic diagram of a power module according to a tenth embodiment of the present utility model, as shown in fig. 10, further, the power module 2 further includes a backflow preventing unit 25, where the backflow preventing unit 25 is connected to an output end of the output filtering unit 23.
Specifically, the anti-backflow unit 25 is configured to prevent the current at the output end of the output filter unit 23 from backflow into the power module 2, thereby improving the safety of the power module. The backflow preventing unit 25 may be a diode, wherein an anode of the diode is connected with an anode output end of the output filtering unit 23, and a cathode of the diode is connected with an anode of the direct current bus.
Fig. 11 is a schematic diagram of a power module according to an eleventh embodiment of the present utility model, as shown in fig. 11, further, based on the foregoing embodiments, the power module 2 includes an input filter unit 21, an ac/dc conversion unit 22, an output filter unit 23, a charging unit 27, and a boost unit 26, where the input filter unit 21, the ac/dc conversion unit 22, the boost unit 26, and the output filter unit 23 are sequentially connected, the boost unit 26 is connected to the ac/dc conversion unit 22 and the output filter unit 23, the charging unit 27 is connected to a line between the ac/dc conversion unit 22 and the boost unit 26, and a first end of the battery pack 1 corresponding to the power module 2 is connected to the charging unit 27.
Specifically, the voltage boosting unit 26 is configured to convert the input voltage of the voltage boosting unit 26 into a target voltage output while being able to function as a discharge unit when the battery pack 1 is discharged. When power is supplied by the external three-phase alternating current, the voltage boosting unit 26 converts the voltage output by the alternating current-direct current conversion unit 22 into a target voltage output; when power is supplied through the battery pack 1, the voltage boosting unit 26 converts the voltage output from the battery pack 1 into a target voltage output. When the first end of the battery pack 1 corresponding to the power module 2 is the positive electrode, the positive electrode output end X of the alternating current-direct current conversion unit 22 is connected with the first end of the battery pack 1 through the charging unit 27, the negative electrode output end Y of the alternating current-direct current conversion unit 22 is connected with the second end of the battery pack 1 through the charging unit 27 and the negative electrode of the direct current bus, and the second end of the battery pack 1 is connected with the negative electrode of the direct current bus; when the first end of the battery pack 1 corresponding to the power module 2 is the negative electrode, the negative electrode output end Y of the ac/dc conversion unit 22 is connected to the first end of the battery pack 1 through the charging unit 27, and the negative electrode output end Y of the ac/dc conversion unit 22 is connected to the second end of the battery pack 1 through the charging unit 27 and the negative electrode of the dc bus, and the second end of the battery pack 1 is connected to the positive electrode of the dc bus.
Fig. 12 is a schematic diagram of a power module according to a twelfth embodiment of the present utility model, as shown in fig. 12, further, based on the above embodiments, the boost unit 26 includes an inductor L1, a switching tube Q1, a diode D2, and a capacitor C1, where:
the first end of inductance L1 links to each other with the first end of exchanging DC conversion unit 22, and inductance L1's second end links to each other with the positive pole of diode D2 and the first end of switch tube Q1 respectively, and diode D2's negative pole links to each other with the first end of electric capacity C1, and diode D2's negative pole links to each other with the first end of output filter unit 23, and the second end of switch tube Q1 links to each other with the second end of electric capacity C1 and the second end of exchanging DC conversion unit 22 respectively, and the second end of electric capacity C1 links to each other with the second end of output filter unit 23.
Specifically, when the switching transistor Q1 is turned on, the current in the inductor L1 rises, when the power switching transistor Q1 is turned off, the current stored in the inductor L1 charges the capacitor C1 through the diode D2, and when the voltage across the capacitor C1 reaches the target voltage, the output filter unit 23 is caused to output the target voltage. The specific model and parameters of the inductor L1, the switching tube Q1, the diode D2 and the capacitor C1 are selected according to actual needs, and the embodiment of the utility model is not limited.
Fig. 13 is a schematic diagram of a power module according to a thirteenth embodiment of the present utility model, as shown in fig. 13, further, the power module 2 includes a voltage regulating unit 28, where the voltage regulating unit 28 is connected to a line between the voltage boosting unit 26 and the output filtering unit 23. In order to prevent the voltage rising by the voltage boosting unit 26 from becoming excessively high, a voltage regulating unit 28 is provided to regulate the voltage boosted by the voltage boosting unit 26 to a target voltage.
In the description of the present specification, reference to the terms "one embodiment," "one particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one of the utility model
In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment 5 examples or illustrations. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are further described in detail for the purpose, technical proposal and beneficial effects of the present utility model, it should be understood that the above description is only of the embodiments of the present utility model and is not used for
The scope of the present utility model is defined, and any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.
Claims (11)
1. A direct current power supply system with fixed output voltage, comprising at least one battery pack and a power module corresponding to each battery pack, wherein:
the first end of each battery pack is connected with a corresponding power module, the second end of each battery pack is connected with a direct current bus, and the output of each power module is connected with the direct current bus; the first end of each battery pack is a positive electrode, and the second end of each battery pack is a negative electrode; alternatively, the first end of each battery is a negative electrode and the second end of each battery is a positive electrode.
2. The direct current power supply system according to claim 1, wherein the first end of each battery pack is connected to the direct current bus bar through a corresponding short circuit protection module.
3. The direct current power supply system according to claim 2, wherein the short-circuit protection module employs a diode or a thyristor.
4. The fixed output voltage dc power supply system of claim 1, wherein the first and second ends of each battery pack are provided with an overcurrent protection module, respectively.
5. The fixed output voltage dc power supply system of claim 4, wherein the over-current protection module employs a fuse or a protection switch.
6. The fixed output voltage dc power supply system of claim 1, wherein each battery pack corresponds to a plurality of power modules.
7. The direct current power supply system with fixed output voltage according to any one of claims 1 to 6, wherein the power module comprises an input filter unit, an ac-dc conversion unit, an output filter unit and a charge-discharge unit, the input filter unit, the ac-dc conversion unit and the output filter unit are sequentially connected, the charge-discharge unit is connected to a line between the ac-dc conversion unit and the output filter unit, and a first end of a battery pack corresponding to the power module is connected to the charge-discharge unit.
8. The fixed output voltage dc power supply system of claim 7, wherein the power module further comprises a backflow prevention unit coupled to the output of the output filter unit.
9. The fixed output voltage direct current power supply system according to claim 7, wherein the power module further comprises a boost unit, and accordingly, the charge-discharge unit is replaced with a charge unit; the boosting unit is respectively connected with the alternating current-direct current conversion unit and the output filtering unit, and the charging unit is connected to a circuit between the alternating current-direct current conversion unit and the boosting unit.
10. The fixed output voltage dc power supply system of claim 9, wherein the boost unit comprises an inductor, a switching tube, a diode, and a capacitor, wherein:
the first end of inductance with the first end of exchanging direct current conversion unit links to each other, the second end of inductance with the anodal of diode with the first end of switch tube links to each other respectively, the negative pole of diode with the first end of electric capacity links to each other, the negative pole of diode with the first end of output filter unit links to each other, the second end of switch tube with the second end of electric capacity with the second end of exchanging direct current conversion unit links to each other respectively, the second end of electric capacity with the second end of output filter unit links to each other.
11. The fixed output voltage dc power supply system of claim 9, further comprising a voltage regulating unit coupled to a line between the voltage boosting unit and the output filtering unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320056902.1U CN219164234U (en) | 2023-01-09 | 2023-01-09 | Direct current power supply system with fixed output voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320056902.1U CN219164234U (en) | 2023-01-09 | 2023-01-09 | Direct current power supply system with fixed output voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219164234U true CN219164234U (en) | 2023-06-09 |
Family
ID=86642872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320056902.1U Active CN219164234U (en) | 2023-01-09 | 2023-01-09 | Direct current power supply system with fixed output voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219164234U (en) |
-
2023
- 2023-01-09 CN CN202320056902.1U patent/CN219164234U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8552590B2 (en) | Energy management system and grid-connected energy storage system including the energy management system | |
| KR101084214B1 (en) | Grid-connected energy storage system and method for controlling grid-connected energy storage system | |
| US9013066B2 (en) | High voltage electric accumulators with internal distributed DC-DC converters for self regulation and protection | |
| US10790769B2 (en) | Control method and control system for enhancing endurance to anomalous voltage for doubly-fed induction generator | |
| KR102234290B1 (en) | Energy storage system and controlling method the same | |
| US9263776B2 (en) | Battery system and energy storage system including the same | |
| US20150255999A1 (en) | Energy storage system and controlling method thereof | |
| CA2420973A1 (en) | High efficiency fuel cell power conditioner | |
| KR20130099022A (en) | Power conversion system for energy storage system and controlling method of the same | |
| CN102355042A (en) | Super-capacitor-based direct current power device of power station and power supply method thereof | |
| KR20140040612A (en) | Temperature controlling system of battery and energy storage system using the same and controlling method thereof | |
| CN116349106A (en) | Energy storage system, control method of energy storage system and photovoltaic power generation system | |
| CN108365623A (en) | Electric vehicle changes the transmission system of electricity and energy storage station | |
| CN113098126B (en) | Voltage compensation device | |
| CN219164234U (en) | Direct current power supply system with fixed output voltage | |
| CN212849970U (en) | Uninterruptible power supply and power supply system | |
| US20210194270A1 (en) | Storage Battery Unit, Storage Battery Device and Hybrid-Typed Power Supply System | |
| CN109936194B (en) | Power supply circuit of battery management system | |
| CA3019619A1 (en) | Power supply connection device, and charging-discharging control method for same | |
| CN115940114A (en) | Direct current power supply system with fixed output voltage | |
| CN219107111U (en) | Battery group parallel device | |
| CN218526108U (en) | Control system of energy storage battery container | |
| CN215772576U (en) | Battery device and power supply system | |
| EP3301800A1 (en) | A power converter system for connection to an electric power distribution grid | |
| CN220306999U (en) | Power management device and power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |