CN210577952U - Combined energy storage power station - Google Patents
Combined energy storage power station Download PDFInfo
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- CN210577952U CN210577952U CN201921523153.9U CN201921523153U CN210577952U CN 210577952 U CN210577952 U CN 210577952U CN 201921523153 U CN201921523153 U CN 201921523153U CN 210577952 U CN210577952 U CN 210577952U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 33
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 208000028659 discharge Diseases 0.000 claims description 9
- 238000007599 discharging Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 6
- 230000004941 influx Effects 0.000 description 3
- 238000010413 gardening Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
The utility model provides a modular energy storage power station, it includes: a first inverter and a second inverter; the battery pack is suitable for sharing the electric energy input ends of the first inverter and the second inverter, and when the inversion combination outputs, the battery pack is electrically connected to the first inverter and the second inverter respectively; and the coupler is suitable for being respectively connected with the electric energy output ends of the first inverter and the second inverter so as to enable the alternating voltages output by the first inverter and the second inverter to be connected in parallel and output through an output port of the coupler. The technical scheme can increase the output power.
Description
Technical Field
The utility model relates to an energy storage power station, especially a modular energy storage power station belongs to energy storage technical field.
Background
The energy storage power station mainly comprises a built-in storage battery, an inverter and an electric control system, the storage battery can be charged by commercial power, solar energy or a generator, the inverter can convert direct current of the storage battery into alternating current for various electric appliances, and a direct current output interface with various voltages can be configured. Portable energy storage power stations have a wide range of applications, for example: the emergency power supply for families or units, field operation, emergency power utilization, disaster relief, outdoor life and travel, the self-contained power supply for yachts and vehicles, a mobile communication base station and the like. However, the energy storage power stations on the market have single structural functions and limited battery capacity, and after the battery capacity is consumed, the power cannot be continuously supplied to the electric equipment.
In order to expand the capacity of the energy storage power station, the conventional method is to increase the total capacity of the energy storage power station by connecting a plurality of battery packs and overlapping the plurality of battery packs, but in this way, the battery pack with high voltage often charges the battery pack with low voltage, so that the power supply effect of the power supply is poor, and unnecessary electric energy waste is increased. Furthermore, in some cases, for some high-power electric devices, the output power of a single energy storage power station cannot meet the requirements of the electric devices, and the energy storage power station with higher power needs to be provided to meet the use requirements.
In order to overcome the above disadvantages of the existing energy storage power station, a combined energy storage power station with large capacity, large output power and reliable output electric energy needs to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can increase output's combination formula energy storage power station.
The utility model provides a pair of modular energy storage power station, it includes:
-a first inverter and a second inverter;
-a battery pack adapted to be common to power inputs of said first inverter and said second inverter, said battery pack being electrically connected to said first inverter and said second inverter, respectively, when inverting the combined output;
a coupling adapted to connect the power output terminals of the first inverter and the second inverter, respectively, so that the ac voltages output by the two inverters are connected in parallel and output via an output port of the coupling.
Furthermore, the battery pack and one of the first inverter and the second inverter are combined to form an inverter power supply, the battery pack is arranged in the inverter power supply, and the inverter power supply is provided with a power output port matched with the other inverter.
Furthermore, the first inverter or the second inverter is provided with at least one input interface, the battery pack is suitable for being connected to the input interface and forming current influx, one part of the influx current is used for inputting the electric energy of the inverter, and the other part of the influx current is shunted to the other inverter for inputting the electric energy of the inverter.
Further, the input interface is a parallel interface or a current limiting interface, and a parallel module circuit or a current limiting module circuit suitable for preventing reverse charging is correspondingly arranged in the input interface or the current limiting interface respectively.
Further, a parallel module circuit or a current limiting module circuit adapted to prevent reverse charging is built in each of the battery packs.
Further, the coupler is built in combination with the first inverter or the second inverter and is connected with the electric energy output end of the coupler; the connector is also provided with a connecting terminal suitable for being externally connected with an electric energy output interface of another inverter.
Further, the coupler and the first and second inverters are independent of each other, in a single module configuration.
Further, the specification voltages adopted by the plurality of battery packs connected to the input interface are the same with each other.
Further, when the output port of the coupler supplies power to a consumer, the plurality of battery packs are discharged simultaneously.
Furthermore, the parallel module circuit comprises a linkage control switch, an identification unit and a control unit; the linkage control switch comprises a plurality of switches, and each parallel connection port is connected with one switch; the identification unit is suitable for identifying the voltage of the battery pack, the control unit controls the high-voltage early discharge in the battery pack, and when the voltage of the battery pack reaches balance, the control unit controls the battery pack to discharge simultaneously; or;
the current limiting module circuit comprises a control unit, an anti-reverse charging piece, a first MOS tube and a second MOS tube which are connected; the first MOS tube is connected with the second MOS tube in series, and the control unit is electrically connected with the first MOS tube and the second MOS tube; the anti-reverse charging piece is connected with the second MOS tube in parallel;
the input interface is connected with battery packs, when the voltage of one battery pack is lower than the voltage of other battery packs, the control unit controls the second MOS tube to be actively closed, and the low-voltage battery pack forms a loop through the anti-reverse charging piece and the first MOS tube to discharge.
Compared with the prior art, the utility model discloses combined energy storage power station's beneficial effect is:
(1) in the technical scheme, the electric energy output ends of the independent first inverter and the independent second inverter are connected in parallel through the coupler to output the parallel alternating-current voltage, so that the output power of the energy storage power station is increased, and the high-power use requirement of a user is met; in addition, the battery pack in the technical scheme can be combined with one of the inverters to form an inverter power supply, so that the inverter power supply can be used independently, and can be combined with the other inverter in parallel to meet the requirement of high-power output.
(2) In the technical scheme, the first inverter or the second inverter is provided with at least one input interface, namely 1 or more input interfaces are arranged, the battery pack can be connected with the input interfaces, one part of current collected by the battery pack is used for the direct current input of the inverter connected with the battery pack, and the other part of the current is used by the other inverter; when the number of the input interfaces is 1, the battery pack can be combined with the inverter to form an inverter power supply for use as described above, but preferably, the battery pack and the input interfaces are detachably configured, can be freely detached and used conveniently, and particularly, the battery pack structure can be designed into a garden tool battery pack structure, so that the garden tool can be used for outdoor and household power utilization; when the number of the input interfaces is more than 2, the battery pack and the input interfaces are preferably freely detachable, so that more battery packs can be conveniently accessed, the battery capacity can be increased by increasing the number of the battery packs, and the electric energy output time can be prolonged.
(3) In the technical scheme, the parallel connection port or the current limiting port is preferably adopted as the input interface suitable for being connected into the battery pack in parallel, and a parallel module circuit or a current limiting module circuit suitable for preventing reverse charging is correspondingly arranged in the parallel connection port or the current limiting port respectively; or each battery pack is internally provided with a parallel module circuit or a current limiting module circuit which is suitable for preventing reverse charging, the circuit comprises a control unit and a monitoring unit, the monitoring unit is suitable for identifying and monitoring the voltage of each battery pack, and the control unit controls the discharging step of each battery pack according to the monitored voltage so as to avoid mutual charging of the battery packs which are connected in parallel; specifically, the discharging step comprises the steps that the high-voltage battery pack is discharged firstly until the high-voltage battery pack and other battery packs connected in parallel start to be discharged simultaneously when the high-voltage battery pack and other battery packs are consistent in voltage; or; the discharging step comprises the step that the control unit disconnects the charging path of the low-voltage battery pack, and the low-voltage battery pack and other battery packs are discharged together, so that only discharging is carried out, charging is not carried out, and reverse charging is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1: the structure principle of the concrete embodiment 1 of the utility model is schematically shown;
FIG. 2: the structure principle of the concrete embodiment 2 of the utility model is schematically shown;
FIG. 3: the structure principle of the concrete embodiment 3 of the utility model is schematically shown;
FIG. 4: the structure principle of the specific embodiment 4 of the utility model is schematically shown;
FIG. 5: the utility model discloses a parallel module circuit diagram of the concrete embodiment;
FIG. 6: the utility model discloses specific embodiment current limiting module circuit.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 4, a combined energy storage power station includes a first inverter 10, a second inverter 20, and a battery pack 30, and a coupling 40.
The battery pack 30 is suitable for sharing the electric energy input ends of the first inverter 10 and the second inverter 20, and when the inversion combination outputs, the inversion combination is electrically connected to the first inverter 10 and the second inverter 20 respectively; the coupler 40 is adapted to connect the power output terminals of the first inverter 10 and the second inverter 20 respectively so that the ac voltages output by the two inverters are connected in parallel and output through the output port of the coupler 40.
The electric energy output ends of the independent first inverter 10 and the independent second inverter 20 are connected in parallel through the coupler 40 to output parallel alternating-current voltages, so that the output power of the energy storage power station is increased, and the high-power use requirement of a user is met, and in the technical scheme, the battery pack 30 is shared by the first inverter 10 and the second inverter 20, so that the structure and the arrangement are compact; in addition, in this technical solution, the battery pack 30 may also be combined with one of the inverters to form an inverter power supply, so that the inverter power supply may be used alone, or may be combined with another inverter to meet the requirement of high power output.
Specifically, as shown in fig. 1, the battery pack 30 is combined with one of the first inverter 10 and the second inverter 20 to form an inverter power supply, and the battery pack 30 is built in the inverter power supply, and the inverter power supply is provided with a power output port that is matched with the other inverter.
In embodiment 1, the battery pack 30 is combined with the first inverter 10 to form the inverter power supply 100, the battery pack 30 is embedded in the inverter power supply 100, and the inverter power supply 100 is provided with a power output port that is matched with the second inverter 20.
In addition, as shown in fig. 1, in embodiment 1, the coupler 40 is independent from the first inverter 10 and the second inverter 20, and the coupler 40 is configured as a single module, that is, the coupler 40 is disposed on the ac output paths of the first inverter 10 and the second inverter 20, and the ac voltages output by the two inverters are connected in parallel and then output through the output port of the coupler 40, so as to meet the requirement of high power consumption.
In addition, the coupling 40 may be built in the first inverter 10 or the second inverter 20, specifically, as shown in fig. 2, the structure and principle of embodiment 2 are substantially similar to those of embodiment 1, except that: the coupler 40 is built in combination with the first inverter 10, that is, the first inverter 10 and the battery pack 30 are combined to form an inverter power supply 100, and the coupler 40 is arranged in the inverter power supply 100 and connected with the electric energy output end of the first inverter 10; the coupling 40 is also provided with a connection terminal adapted to externally connect a power output interface of another inverter, i.e., the second inverter 20.
The coupler 40 is arranged in the inverter power supply 100 and connected with the electric energy output end of the inverter power supply 100, namely, arranged on the path of the alternating current output of the first inverter 10; the coupler 40 is further provided with a connection terminal adapted to externally connect the power output interface of the second inverter 20, the connection terminal is connected to the power output interface of the second inverter 20, and the coupler 40 is connected to the ac output path of the second inverter 20, so that the ac voltages output by the two are connected in parallel, the output power is increased, and the parallel ac voltage is output through the output port of the coupler 40.
The coupler 40 is arranged in the inverter power supply 100 and is connected with the electric energy output end of the inverter power supply 100, and when the parallel operation is carried out, the connecting terminal of the coupler 40 is connected with the electric energy output interface of the second inverter 20, so that the parallel operation work is realized, and the parallel operation is simple and compact in structure and convenient to use; of course, the coupler 40 may be disposed inside the second inverter 20, and those skilled in the art will understand that the disposition of the coupler 40 may be simply changed and still be within the protection scope of the present invention.
As shown in fig. 3 and 4, the first inverter 10 or the second inverter 20 is provided with at least one input interface 50, and the battery pack 30 is adapted to be connected to the input interface 50 and form a current sink, wherein a part of the sink current is used for the power input of the inverter, and the other part of the sink current is shunted to the other inverter for the power input of the other inverter.
More specifically, the battery pack 30 is connected to the input interface 50, and a current sink is formed at the input end of a shunt module built in the inverter, and the output end of the shunt module is provided with a power output port adapted to be matched with another inverter.
The input interface 50 is a parallel interface or a current limiting interface, and a parallel module circuit or a current limiting module circuit suitable for preventing reverse charging is correspondingly arranged in the input interface or the current limiting interface; alternatively, each of the battery packs 30 has a parallel module circuit or a current limiting module circuit built therein for preventing back charging.
The circuit comprises a control unit and a monitoring unit, wherein the monitoring unit is suitable for identifying and monitoring the voltage of each battery pack, and the control unit controls the discharging step of each battery pack according to the monitored voltage so as to avoid the mutual charging of the battery packs which are connected in parallel; specifically, the discharging step comprises the steps that the high-voltage battery pack is discharged firstly until the high-voltage battery pack and other battery packs connected in parallel start to be discharged simultaneously when the high-voltage battery pack and other battery packs are consistent in voltage; or; the discharging step comprises the step that the control unit disconnects the charging path of the low-voltage battery pack, and the low-voltage battery pack and other battery packs are discharged together, so that only discharging is carried out, charging is not carried out, and reverse charging is avoided.
Specifically, in embodiment 3, as shown in fig. 3, the first inverter 10 is provided with a plurality of input interfaces 50, and each of the battery packs 30 has a parallel module circuit or a current limiting module circuit built therein, which is adapted to prevent back charging, and is adapted to be connected to the input interfaces 50, and to form a current sink, in which a part of the sink current is used for the electric energy input of the inverter, and the other part is shunted to another inverter for the electric energy input thereof.
Moreover, a part of the battery packs 30 are built in, a part of the battery packs 30 are external, the built-in battery packs 30 and the first inverter 10 are combined to form an inverter power supply, the external battery packs 30 can be designed in a tool battery pack form, the tool battery pack is suitable for being shared by power mobile operation machines such as electric tools and electric gardening tools, and the like, so that garden and outdoor power utilization is realized, household power utilization intercommunication is realized, the tool battery pack of the garden tool can be adapted to an energy storage power station for use, the problem that a plurality of current household users face the situation that the battery capacity of the energy storage power station is insufficient on one hand, and on the other hand, the tool battery pack of the garden tool is powered and is idle and wasted in use is effectively solved, so that the tool battery pack of the garden tool can not only meet the requirements of garden.
The electric tool comprises an electric drill, a circular saw and the like, the electric gardening tool comprises a grass trimmer, a blower, a pruner, a chain saw and the like, and the power moving operation machine comprises a snow blower, a mower and the like.
The coupler 40 and the first inverter 10 and the second inverter 20 are independent of each other in this embodiment, and are configured as separate modules.
In addition, the input interface 50 may also be a parallel interface or a current limiting interface, which respectively correspond to a parallel module circuit or a current limiting module circuit that is internally provided with a circuit adapted to prevent reverse charging.
Specifically, as shown in fig. 4, in embodiment 4, the input interface 50 is a current limiting interface, which is correspondingly provided with a current limiting module circuit adapted to prevent reverse charging, the battery pack 30 is adapted to be connected to the input interface, and a part of the same incoming current is supplied to the first inverter 10 for power input, and another part of the same incoming current is shunted to the second inverter 20 for power input.
In this embodiment, the coupling 40 is built into the first inverter 10 and is connected to the electrical energy output thereof; the coupling 40 is also provided with a connection terminal adapted to externally connect to an electric power output interface of another inverter.
In addition, the specification voltages adopted by the plurality of battery packs 30 connected to the input interface 50 in the above-described embodiment are the same as each other.
When the output port of the coupler 40 supplies power to the electric devices, the plurality of battery packs 30 are simultaneously discharged.
In the above scheme, the first inverter or the second inverter is provided with at least one input interface, that is, the input interfaces are provided with 1 or more, the battery pack can be connected to the input interface, one part of the current collected by the battery pack is used for the direct current input of the inverter connected with the battery pack, and the other part of the current is used by the other inverter; when the number of the input interfaces is 1, the battery pack can be combined with the inverter to form an inverter power supply for use as described above, but preferably, the battery pack and the input interfaces are detachably configured, can be freely detached and used conveniently, and particularly, the battery pack structure can be designed into a garden tool battery pack structure, so that the garden tool can be used for outdoor and household power utilization; when the number of the input interfaces is more than 2, the battery pack and the input interfaces are preferably freely detachable, so that more battery packs can be conveniently accessed, the battery capacity can be increased by increasing the number of the battery packs, and the electric energy output time can be prolonged.
In addition, it is worth mentioning that:
the parallel module circuit comprises a linkage control switch, an identification unit and a control unit; the linkage control switch comprises a plurality of switches, and each parallel connection port is connected with one switch; the identification unit is suitable for identifying the voltage of the battery pack, the control unit controls the battery pack to discharge firstly when the voltage of the battery pack is high, and the control unit controls the battery pack to discharge simultaneously when the voltage of the battery pack reaches balance.
The current limiting module circuit comprises a control unit, an anti-reverse charging piece, a first MOS tube and a second MOS tube which are connected; the first MOS tube is connected with the second MOS tube in series, and the control unit is electrically connected with the first MOS tube and the second MOS tube; the anti-reverse charging piece is connected with the second MOS tube in parallel;
the input interface is connected with battery packs, when the voltage of one battery pack is lower than the voltage of other battery packs, the control unit controls the second MOS tube to be actively closed, and the low-voltage battery pack forms a loop through the anti-reverse charging piece and the first MOS tube to discharge.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. A combined energy storage power station, comprising:
-a first inverter and a second inverter;
-a battery pack adapted to be common to power inputs of said first inverter and said second inverter, said battery pack being electrically connected to said first inverter and said second inverter, respectively, when inverting the combined output;
a coupling adapted to connect the power output terminals of the first inverter and the second inverter, respectively, so that the ac voltages output by the two inverters are connected in parallel and output via an output port of the coupling.
2. The combined energy storage power plant of claim 1, characterized in that: the battery pack is combined with one of the first inverter and the second inverter to form an inverter power supply, the battery pack is arranged in the inverter power supply, and the inverter power supply is provided with a power output port matched with the other inverter.
3. The combined energy storage power plant of claim 1, characterized in that: the first inverter or the second inverter is provided with at least one input interface, the battery pack is suitable for being connected with the input interface and forming current collection, one part of the collected current is used for inputting electric energy of the inverter, and the other part of the collected current is shunted to the other inverter to be used for inputting electric energy of the inverter.
4. The combined energy storage power plant of claim 3, characterized in that: the input interface is a parallel interface or a current limiting interface, and a parallel module circuit or a current limiting module circuit suitable for preventing reverse charging is correspondingly arranged in the input interface.
5. The combined energy storage power plant of claim 3, characterized in that: the battery pack is internally provided with a parallel module circuit or a current limiting module circuit which is suitable for preventing reverse charging.
6. The combined energy storage power plant of any one of claims 1 to 5, characterized in that: the coupler is internally arranged in combination with the first inverter or the second inverter and is connected with the electric energy output end of the coupler; the connector is also provided with a connecting terminal suitable for being externally connected with an electric energy output interface of another inverter.
7. The combined energy storage power plant of any one of claims 1 to 5, characterized in that: the coupler and the first and second inverters are independent of each other in a single module configuration.
8. The combined energy storage power plant of any one of claims 3-5, characterized in that: and the specification voltages adopted by the plurality of battery packs connected into the input interface are the same.
9. The combined energy storage power plant of claim 8, characterized in that: when the output port of the coupler supplies power to the electric equipment, the plurality of battery packs are discharged simultaneously.
10. The combined energy storage power plant of claim 4 or 5, characterized in that:
the parallel module circuit comprises a linkage control switch, an identification unit and a control unit; the linkage control switch comprises a plurality of switches, and each parallel connection port is connected with one switch; the identification unit is suitable for identifying the voltage of the battery pack, the control unit controls the high-voltage early discharge in the battery pack, and when the voltage of the battery pack reaches balance, the control unit controls the battery pack to discharge simultaneously; or;
the current limiting module circuit comprises a control unit, an anti-reverse charging piece, a first MOS tube and a second MOS tube which are connected; the first MOS tube is connected with the second MOS tube in series, and the control unit is electrically connected with the first MOS tube and the second MOS tube; the anti-reverse charging piece is connected with the second MOS tube in parallel;
the input interface is connected with the battery packs, when the voltage of one battery pack is lower than the voltage of other battery packs, the control unit controls the second MOS tube to be actively closed, and the low-voltage battery pack forms a loop through the anti-reverse charging piece and the first MOS tube to discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523153.9U CN210577952U (en) | 2019-09-12 | 2019-09-12 | Combined energy storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523153.9U CN210577952U (en) | 2019-09-12 | 2019-09-12 | Combined energy storage power station |
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| Publication Number | Publication Date |
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| CN210577952U true CN210577952U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921523153.9U Active CN210577952U (en) | 2019-09-12 | 2019-09-12 | Combined energy storage power station |
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| CN (1) | CN210577952U (en) |
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2019
- 2019-09-12 CN CN201921523153.9U patent/CN210577952U/en active Active
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Assignee: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd. Assignor: ZHEJIANG QIXIANG TECHNOLOGY CO.,LTD. Contract record no.: X2023330000879 Denomination of utility model: Combined energy storage power station Granted publication date: 20200519 License type: Common License Record date: 20231124 |