CN219643595U - Energy storage system for new energy power grid - Google Patents
Energy storage system for new energy power grid Download PDFInfo
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- CN219643595U CN219643595U CN202222943648.5U CN202222943648U CN219643595U CN 219643595 U CN219643595 U CN 219643595U CN 202222943648 U CN202222943648 U CN 202222943648U CN 219643595 U CN219643595 U CN 219643595U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 28
- 238000010248 power generation Methods 0.000 claims abstract description 62
- 230000001788 irregular Effects 0.000 claims description 24
- 238000007599 discharging Methods 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an energy storage system for a new energy power grid. An energy storage system for a new energy grid comprising: the power generation device is electrically connected with the first storage device, the first storage device is electrically connected with the second storage device, and a first circuit breaking device is arranged between the first storage device and the second storage device. The power generation device generates power, and conveys and stores electric quantity into the first storage device along the circuit, and when the first storage device is in a non-charging state or the first storage device is in a non-charging state, the electric energy stored by the first storage device is released to the second storage device. Therefore, the first storage device and the second storage device are in a charging or discharging state at the same time, and the state of simultaneous charging and discharging does not exist, so that the loss of the first storage device and the second storage device is reduced, and the service lives of the first storage device and the second storage device are prolonged.
Description
Technical Field
The utility model belongs to the technical field of power grid energy storage, and particularly relates to an energy storage system for a new energy power grid.
Background
The new energy is generally renewable energy which is developed and utilized on the basis of new technology and comprises solar energy, biomass energy, water energy, wind energy, geothermal energy, wave energy and the like. With the increasing limitation of conventional energy sources and the increasing prominence of environmental problems, new energy sources with environmental protection and renewable characteristics are increasingly gaining attention in various countries.
In order to ensure the stability of a power grid or electric equipment, energy storage equipment is adopted for new energy generation, and after energy is stored, grid connection or utilization is performed. For example, the battery is used for storing electric power. In the prior art, for example, chinese patent No. CN202211034912.1 discloses a district power grid management system, and specifically discloses that a power generation device that uses solar energy or wind energy to generate power is used to generate power, and then electric energy is stored in an energy storage device, when the electric quantity in the energy storage device is greater than a preset value, the electric energy in the energy storage device can be used to distribute power to a user, so as to save the electricity consumption of the user. When the energy storage device is full of electricity, the electricity consumption requirement of the adjacent cell of the cell is acquired, when the electricity consumption requirement exists in the adjacent cell, the electric energy in the energy storage device is distributed to the corresponding cell, short-range power distribution is realized, the loss in electric energy transmission is reduced, and in addition, the corresponding electricity charge compensation can be acquired for the cell. However, in the process of solar power generation or wind power generation, the system has the phenomenon of discharging while charging, so that the loss of the storage battery is large, and the service life is low.
Disclosure of Invention
Based on this, it is necessary to provide an energy storage system for a new energy grid, which aims at the problems of large loss and low service life of a long-term low-power operation storage battery.
In order to achieve the above purpose, the present utility model adopts the following scheme:
an energy storage system for a new energy grid, comprising:
the power generation device comprises a power generation device, a first storage device and a second storage device, wherein the output end of the power generation device is electrically connected with the input end of the first storage device, and the output end of the first storage device is electrically connected with the input end of the second storage device; a first circuit breaking device is arranged between the first storage device and the second storage device, the first circuit breaking device has a first state and a second state, and when the first circuit breaking device is in the first state, a circuit between the first storage device and the second storage device is in the circuit breaking state; when the first circuit breaking device is in the second state, a circuit between the first storage device and the second storage device is in a pass state.
Preferably, the power generation device comprises a regular new energy power generation assembly and an irregular new energy power generation assembly, wherein the regular new energy power generation assembly is used for converting solar energy into electric energy and storing the electric energy in the first storage device; the irregular new energy power generation assembly is used for converting wind energy into electric energy and storing the electric energy in the first storage device.
Preferably, the first storage device comprises a first storage component and a second storage component, the input end of the first storage component is electrically connected with the regular new energy power generation component, the input end of the second storage component is electrically connected with the irregular new energy power generation component, and the output ends of the first storage component and the second storage component are electrically connected with the input end of the second storage device.
Preferably, the first circuit breaker device comprises a first circuit breaker, an input end of the first circuit breaker is connected with an output end of the first storage component, and an output end of the first circuit breaker is electrically connected with an input end of the second storage device.
Preferably, the first circuit breaker device further comprises a first DC/DC controller, an input end of the first DC/DC controller is connected to an output end of the first circuit breaker, and an output end of the first DC/DC controller is connected to an input end of the second storage device.
Preferably, the first circuit breaker device comprises a second circuit breaker and a third circuit breaker, wherein the input end of the second circuit breaker is connected with the output end of the irregular new energy power generation assembly, the output end of the second circuit breaker is connected with the input end of the second storage assembly, the input end of the third circuit breaker is connected with the output end of the second storage assembly, and the output end of the third circuit breaker is electrically connected with the input end of the second storage assembly.
Preferably, the second storage component comprises a second storage battery and a third storage battery, the second storage battery is arranged between the second circuit breaker and the third circuit breaker, the third storage battery is connected with the second storage battery in parallel, and the output end of the third storage battery is connected with the second storage device.
Preferably, the first circuit breaker further comprises a fourth circuit breaker and a fifth circuit breaker, wherein the input end of the fourth circuit breaker is connected with the output end of the irregular new energy power generation assembly, the output end of the fourth circuit breaker is connected with the input end of the third storage battery, the input end of the fifth circuit breaker is connected with the output end of the third storage battery, and the output end of the fifth circuit breaker is electrically connected with the input end of the second storage device.
Preferably, the first circuit breaker device further comprises a second DC/DC controller, an input end of the second DC/DC controller is connected to an output end of the second circuit breaker and an output end of the third circuit breaker, and an output end of the second DC/DC controller is connected to an input end of the second storage device.
Preferably, the input end of the second storage device is electrically connected with the output ends of the first storage component and the second storage component respectively.
The technical scheme adopted by the utility model can achieve the following beneficial effects:
the power generation device generates power, and conveys and stores electric quantity into the first storage device along the circuit, and when the first storage device is in a non-charging state or the first storage device is in a non-charging state, the electric energy stored by the first storage device is released to the second storage device. Therefore, the first storage device and the second storage device are in a charging or discharging state at the same time, and the state of simultaneous charging and discharging does not exist, so that the loss of the first storage device and the second storage device is reduced, and the service lives of the first storage device and the second storage device are prolonged.
Drawings
Fig. 1 is a schematic diagram of an energy storage system for a new energy grid according to an embodiment of the present utility model;
wherein: the energy storage system 10 of the new energy grid, the power generation device 100, the regular new energy power generation component 110, the irregular new energy power generation component 120, the first storage device 200, the first storage component 210, the second storage component 220, the second storage battery 221, the third storage battery 222, the first circuit breaker 300, the first circuit breaker 310, the second circuit breaker 320, the third circuit breaker 330, the fourth circuit breaker 340, the fifth circuit breaker 350, the first DC/DC controller 341, the second DC/DC controller 342 and the second storage device 400.
Description of the embodiments
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that when one device is considered to be "connected" to another device, it may be directly connected to the other device or there may be an intervening device present at the same time. The terms "inner," "top," "upper," "lower," and the like are used herein for descriptive purposes only and not to represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, in one embodiment, an energy storage system 10 for a new energy grid is provided, comprising: the power generation device 100, the first storage device 200 and the second storage device 400, wherein the output end of the power generation device 100 is electrically connected with the input end of the first storage device 200, and the output end of the first storage device 200 is electrically connected with the input end of the second storage device 400; a first circuit breaking device 300 is disposed between the first storage device 200 and the second storage device 400, the first circuit breaking device 300 has a first state and a second state, and when the first circuit breaking device 300 is in the first state, a circuit between the first storage device 200 and the second storage device 400 is in the circuit breaking state; when the first circuit breaking device 300 is in the second state, the circuit between the first memory device 200 and the second memory device 400 is in a pass state; for example, the power generation device 100 generates power, and transfers and stores the power into the first storage device 200 along a circuit, and when the first storage device 200 is in a non-charged state or the first storage device 200 is in a non-charged state, the power stored in the first storage device 200 is released to the second storage device 400. Therefore, the first storage device 200 and the second storage device 400 are only in a charging or discharging state at the same time, and no state of simultaneous charging and discharging exists, so that the loss of the first storage device 200 and the second storage device 400 is reduced, and the service lives of the first storage device 200 and the second storage device 400 are prolonged.
Further, the power generation device 100 includes a regular new energy power generation component 110 and an irregular new energy power generation component 120, where the regular new energy power generation component 110 is configured to convert regular new energy into electric energy and store the electric energy in the first storage device 200; the irregular new energy power generation component 120 is configured to convert irregular new energy into electric energy and store the electric energy in the first storage device 200; for example, the power generation device 100 sets the regular new energy power generation assembly 110 to generate solar energy and the irregular new energy power generation assembly 120 to generate wind power, when the sunlight is strong, the solar energy power generation is adopted, when the wind speed is high, the wind power generation is adopted, and the wind power is stored in the first storage device, so that the problem that the generated energy of the single power generation device 100 is low due to environmental factors is avoided, the existing energy is saved by various renewable energy power generation modes, and the generated energy is increased, so that the storage battery is charged efficiently and rapidly.
Specifically, the first storage device 200 includes a first storage component 210 and a second storage component 220, wherein an input end of the first storage component 210 is electrically connected with the regular new energy power generation component 110, an input end of the second storage component 220 is electrically connected with the irregular new energy power generation component 120, and output ends of the first storage component 210 and the second storage component 220 are electrically connected with an input end of the second storage device 400; for example, the output end of the regular new energy power generation component 110 is connected to the input end of the first storage component 210, the first storage component 210 stores the generated energy of the solar energy component, the output end of the irregular new energy power generation component 120 is connected to the input end of the second storage component 220, the second storage component 220 stores the generated energy of the irregular new energy power generation component 120, the first storage component 210 is connected in parallel with the second storage component 220, and the output ends of the first storage component 210 and the second storage component 220 are connected to the input end of the second storage device 400, so that the storage devices are increased, the electric quantities of the regular new energy power generation component 110 and the irregular new energy power generation component 120 are respectively stored, the statistical control of the stored electric quantity is facilitated, the charging and discharging frequencies of the first storage component 210 are reduced, and the service life of the storage components is prolonged.
More specifically, the first circuit breaker device 300 includes a first circuit breaker 310, an input terminal of the first circuit breaker 310 is connected to an output terminal of the first storage component 210, and an output terminal of the first circuit breaker 310 is electrically connected to an input terminal of the second storage device 400; for example, the first circuit breaker 310 is installed between the first storage battery and the second storage device 400, the regular new energy power generation assembly 110 generates power during the daytime, the first circuit breaker 310 is in a first state to disconnect the circuit, the first storage assembly 210 is charged, the regular new energy power generation assembly 110 stops generating power during the nighttime, the first circuit breaker 310 is in a second state to connect the circuit, and the first storage assembly 210 discharges to charge the second storage device 400. Thus, the first storage component 210 is only charged in daytime, the first storage component 210 is only discharged at night, the loss of the first storage component 210 is reduced, and the service life of the storage battery is prolonged.
In a specific embodiment, the first circuit breaker 310 further includes a first DC/DC controller 341, an input terminal of the first DC/DC controller 341 is connected to an output terminal of the first circuit breaker 310, and an output terminal of the first DC/DC controller 341 is connected to an input terminal of the second storage device 400; for example, a first DC/DC controller 341 is installed between the first circuit breaker 310 and the second storage device 400, the regular new energy power generation assembly 110 generates power, the power is stored and discharged by the first storage assembly 210, the voltage does not meet the voltage required by the second storage device 400, and the first DC/DC controller 341 is installed to change the voltage to increase the voltage so that the voltage meets the voltage required by the second storage device 400, and the loss of the storage device caused by the voltage mismatch is reduced, thereby realizing the increase of the service life.
Further, the first circuit breaker 310 includes a second circuit breaker 320 and a third circuit breaker 330, wherein an input end of the second circuit breaker 320 is connected to an output end of the irregular new energy power generation assembly 120, an output end of the second circuit breaker 320 is connected to an input end of the second storage assembly 220, an input end of the third circuit breaker 330 is connected to an output end of the second storage assembly 220, and an output end of the third circuit breaker 330 is electrically connected to an input end of the second storage assembly 400; for example, the second circuit breaker 320 is disposed at an input end of the second storage unit 220, and the third circuit breaker 330 is disposed at an output end thereof. The second circuit breaker 320 is in the second state, and the third circuit breaker 330 is in the first state, and the second storage component 220 is only charged and not discharged in the whole process; the second circuit breaker 320 is in the first state and the third circuit breaker 330 is in the second state, and the second storage assembly 220 is only discharged and not charged throughout the process. Thereby realizing that the second storage component 220 is only charged or only discharged, reducing the loss of the second storage component 220 and prolonging the service life of the storage battery.
Specifically, the second storage component 220 includes a second storage battery 221 and a third storage battery 222, where the second storage battery 221 is disposed between the second circuit breaker 320 and the third circuit breaker 330, the third storage battery 222 is connected in parallel with the second storage battery 221, and an output end of the third storage battery 222 is connected to the second storage device 400; for example, in different air temperature environments in each region, the wind speed per day can meet the wind power generation requirement, the second storage component 220 includes the second storage battery 221 and the third storage battery 222, the second storage battery 221 is connected in parallel with the third storage battery 222, the output end of the second storage battery 221 is connected with the input end of the second circuit breaker 320, when the second circuit breaker 320 is in the first state to disconnect the circuit, the irregular new energy power generation component 120 charges the second storage battery 221 and the third storage battery 222 respectively, when the second circuit breaker 320 is in the second state to connect the circuit, the second storage battery 221 and the third storage battery 222 charge the second storage device 400 together, so that the storage capacity of the second storage component 220 is increased, the loss of the storage device caused by excessive charging times is reduced, and the service life of the storage device is prolonged.
More specifically, the first circuit breaker 300 further includes a fourth circuit breaker 340 and a fifth circuit breaker 350, wherein an input end of the fourth circuit breaker 340 is connected to an output end of the irregular new energy power generation assembly 120, an output end of the fourth circuit breaker 350 is connected to an input end of the third storage battery 222, an input end of the fifth circuit breaker 350 is connected to an output end of the third storage battery 222, and an output end of the fifth circuit breaker 350 is electrically connected to an input end of the second storage device 400; for example, the input terminal of the third storage battery 222 is provided with the fourth circuit breaker 340, and the output terminal thereof is provided with the fifth circuit breaker 350. The fourth circuit breaker 340 is in the second state, and the fifth circuit breaker 350 is in the first state, and the third storage battery 222 is only charged and not discharged in the whole process; the fourth circuit breaker 340 is in the first state circuit, and the fifth circuit breaker 350 is in the second state, and the third storage battery 222 is only discharged and not charged in the whole process, so that the charging and discharging process is simpler and more convenient, and the storage device loss caused by charging in the discharging process is reduced, thereby realizing the increase of the service life of the storage device.
In a specific embodiment, the first circuit breaker 300 further includes a second DC/DC controller 342, an input end of the second DC/DC controller 342 is connected to an output end of the second circuit breaker 320 and an output end of the third circuit breaker 330, and an output end of the second DC/DC controller 342 is connected to an input end of the second storage device 400; for example, the output end of the second circuit breaker 320 is connected in parallel with the output end of the third circuit breaker 330, and both are connected to the input end of the second DC/DC controller 342, the irregular new energy power generating component 120 generates power, the second storage battery 221 and the third storage battery 222 store and discharge, the voltage does not meet the voltage required by the second storage device 400, and the second DC/DC controller 342 and the third DC/DC controller are installed to change the voltage to increase the voltage, so that the voltage meets the voltage required by the second storage device 400, and the loss of the storage device caused by voltage mismatch is reduced, thereby realizing the increase of the service life.
Further, the input end of the second storage device 400 is electrically connected to the output ends of the first storage component 210 and the second storage component 220, and the output end of the second storage device 400 is electrically connected to the grid device 500; for example, the input end of the second storage device 400 is connected to the output end of the first DC/DC controller 341 and the output end of the first DC/DC controller 341, the output end of the second storage device 400 is connected to the input end of the power grid device 500, the first storage component 210 and the second storage component 220 respectively transport the stored electric quantity to the second storage device 400, the second storage device 400 supplies power to the power grid device 500, so that the output current is stable, and the output voltage meets the requirements of the power grid device 500, thereby reducing the loss of the second storage device 400 and the power grid device 500, and prolonging the service life of the energy storage system 10 of the new energy power grid.
The above-described embodiments only represent the manner in which the apparatus of the present utility model is arranged, and are described in more detail and are not to be construed as limiting the scope of the claims; it should be noted that it is possible for those skilled in the art to make several adjustments and improvements without departing from the concept of the present utility model, which fall within the scope of protection of the present utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An energy storage system for a new energy grid, comprising: the power generation device comprises a power generation device, a first storage device and a second storage device, wherein the output end of the power generation device is electrically connected with the input end of the first storage device, and the output end of the first storage device is electrically connected with the input end of the second storage device;
a first circuit breaking device is arranged between the first storage device and the second storage device, the first circuit breaking device has a first state and a second state, and when the first circuit breaking device is in the first state, a circuit between the first storage device and the second storage device is in the circuit breaking state; when the first circuit breaking device is in the second state, a circuit between the first storage device and the second storage device is in a pass state.
2. The energy storage system for a new energy grid of claim 1, wherein the power generation device comprises a regular new energy power generation assembly and an irregular new energy power generation assembly, the regular new energy power generation assembly being configured to convert regular new energy into electrical energy and store the electrical energy in the first storage device; the irregular new energy power generation assembly is used for converting irregular new energy into electric energy and storing the electric energy in the first storage device.
3. The energy storage system for a new energy grid of claim 2, wherein the first storage device comprises a first storage component and a second storage component, the first storage component input is electrically connected with the regular new energy power generation component, the second storage component input is electrically connected with the irregular new energy power generation component, and the output of the first storage component and the output of the second storage component are both electrically connected with the second storage device input.
4. The energy storage system for a new energy grid of claim 3, wherein said first circuit breaker means comprises a first circuit breaker, said first circuit breaker input being connected to said first storage component output, said first circuit breaker output being electrically connected to said second storage means input.
5. The energy storage system for a new energy grid according to claim 4, wherein said first circuit breaker device further comprises a first DC/DC controller, said first DC/DC controller input being connected to said first circuit breaker output, said first DC/DC controller output being connected to said second storage device input.
6. The energy storage system for a new energy grid of claim 3, wherein the first circuit breaker device comprises a second circuit breaker and a third circuit breaker, the second circuit breaker input is connected with the irregular new energy power generation assembly output, the second circuit breaker output is connected with the second storage assembly input, the third circuit breaker input is connected with the second storage assembly output, and the third circuit breaker output is electrically connected with the second storage device input.
7. The energy storage system for a new energy grid of claim 6, wherein the second storage assembly comprises a second storage battery and a third storage battery, the second storage battery is disposed between the second circuit breaker and the third circuit breaker, the third storage battery is connected in parallel with the second storage battery, and an output terminal is connected to the second storage device.
8. The energy storage system for a new energy grid of claim 7, wherein the first circuit breaker further comprises a fourth circuit breaker and a fifth circuit breaker, wherein an input end of the fourth circuit breaker is connected with an output end of the irregular new energy power generation assembly, an output end of the fourth circuit breaker is connected with an input end of the third storage battery, an input end of the fifth circuit breaker is connected with an output end of the third storage battery, and an output end of the fifth circuit breaker is electrically connected with an input end of the second storage device.
9. The energy storage system for a new energy grid of claim 8, wherein said first circuit breaker device further comprises a second DC/DC controller, said second DC/DC controller input connected to said second circuit breaker output and said third circuit breaker output, said second DC/DC controller output connected to said second storage device input.
10. The energy storage system for a new energy grid of claim 3, wherein said second storage device input is electrically connected to the outputs of said first storage component and second storage component, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222943648.5U CN219643595U (en) | 2022-11-04 | 2022-11-04 | Energy storage system for new energy power grid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222943648.5U CN219643595U (en) | 2022-11-04 | 2022-11-04 | Energy storage system for new energy power grid |
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| CN219643595U true CN219643595U (en) | 2023-09-05 |
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| CN202222943648.5U Active CN219643595U (en) | 2022-11-04 | 2022-11-04 | Energy storage system for new energy power grid |
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