CN211351723U - Device for relay energy storage of multi-gradient battery - Google Patents
Device for relay energy storage of multi-gradient battery Download PDFInfo
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- CN211351723U CN211351723U CN202020198390.9U CN202020198390U CN211351723U CN 211351723 U CN211351723 U CN 211351723U CN 202020198390 U CN202020198390 U CN 202020198390U CN 211351723 U CN211351723 U CN 211351723U
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- energy storage
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a multi-gradient battery relay energy storage device, which comprises at least two battery cluster joints and a PCS module, wherein a DC/DC module is connected in series between the battery cluster joints and the PCS module, and a battery switching module is arranged between the battery cluster joints and the DC/DC module; the battery cluster joint is used for connecting the echelon battery clusters; the PCS module is used for converting direct current of the battery cluster into alternating current; the DC/DC module is used for boosting the voltage of the battery cluster to a standard voltage value; the battery switching module is used for controlling the electrical connection between the battery cluster and the DC/DC module; and only one group of battery clusters is electrically connected with the DC/DC module at any time. Therefore, the utility model discloses a device of many echelons battery relay energy storage has realized utilizing the function that many echelons batteries stored more electric energy, has avoided the direct parallelly connected inside circulation problem that leads to of echelon battery of the different characteristic again.
Description
Technical Field
The utility model relates to a power battery retrieves the field, especially relates to a device of many terraces battery relay energy storage.
Background
The new energy automobile develops very rapidly, and it is expected that in the coming years, a large number of power batteries of the new energy automobile will be eliminated inevitably, and the recycling of the eliminated power batteries is always a hot topic discussed in the industry, which determines whether the new energy automobile can be developed continuously and well.
At present, the method for utilizing the eliminated power batteries (also called as echelon batteries in the industry) in the industry is mainly to disassemble the power batteries, detect the health conditions of the single internal battery cores one by one and recombine and utilize the power batteries.
Therefore, the company provides a scheme for adding the DC/DC module between the battery cluster and the PCS module, so that the problems of low echelon battery recovery efficiency and high recovery difficulty are greatly reduced.
In practical use, however, the instantaneous power consumption of some occasions can be met by a single echelon battery, but the continuous energy supply time is required to be longer, i.e., the requirement for reserve power is high, such as a fieldwork play group, and the energy storage capacity of a single echelon battery is limited, in the case that the energy storage capacity of a single echelon battery cannot be increased, the multiple echelon batteries are firstly considered to be connected in parallel for use, however due to the difference between the echelon batteries, when the battery is used in parallel, the echelon battery with higher voltage can self-charge the echelon battery with lower voltage, in practical use, the self-charging is difficult to achieve real balance, but the batteries are repeatedly charged mutually among the parallel echelon batteries, i.e., internal circulating currents that form a circulation, cause self-loss of electrical energy, and such internal circulating currents cause great damage to the health of the battery itself.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a device for multi-gradient battery relay energy storage.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a multi-step battery relay energy storage device comprises at least two battery cluster joints and a PCS (Power conversion System) module, wherein a DC/DC (direct Current/direct Current) module is connected between the battery cluster joints and the PCS module in series, and a battery switching module is arranged between the battery cluster joints and the DC/DC module.
The battery cluster joint is used for connecting the echelon batteries;
the PCS module is used for converting direct current of the battery cluster into alternating current;
the DC/DC module is used for boosting the voltage of the battery cluster to a standard voltage value;
the battery switching module is used for controlling the electrical connection between the battery cluster and the DC/DC module; and only one group of battery clusters is electrically connected with the DC/DC module at any time.
Compared with the prior art, the utility model discloses following technological effect has:
when the system detects that the electric quantity of the currently working battery cluster is insufficient, the battery switching module is automatically switched to another battery cluster, so that only one battery cluster is connected with the DC/DC module at any moment to supply electric energy outwards, but in general, the function of storing more electric energy by utilizing a plurality of echelon batteries is realized, and the problem that battery packs with different characteristics cannot be directly used in parallel to improve the energy storage capacity is solved.
On the basis of the technical scheme, the scheme can be further improved as follows:
furthermore, a plurality of devices for relay energy storage of the multi-gradient batteries can be used in parallel.
The beneficial effect of adopting above-mentioned further scheme is that, because the voltage of the recovery battery that output voltage is different has been promoted on the standard voltage in unison, consequently, after PCS module conversion, can form the same voltage value, conveniently carries out parallelly connected use, and parallelly connected use can provide the big current in the twinkling of an eye that the monocell cluster can't provide, satisfies the user demand to the use of big current.
Drawings
Fig. 1 is a schematic structural view of the multi-gradient battery relay energy storage device of the present invention;
in the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a battery cluster joint; 1-1, a battery cluster; 2. a battery switching module; 3. a DC/DC module; 4. a PCS module; 5. and (4) a doubling switch.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Fig. 1 is a schematic structural view of a multi-gradient battery relay energy storage device according to the present invention. The multi-echelon battery relay energy storage device comprises at least two battery cluster joints 1, a battery switching module 2, a DC/DC module 3 and a PCS module 4, wherein the modules are sequentially connected in series.
The battery cluster joints 1 are used for connecting echelon batteries 1-1, each battery cluster joint is connected with one group of echelon battery clusters 1-1, and the echelon battery clusters are used for storing electric energy;
the PCS module 4 is used for converting the direct current of the echelon battery cluster 1-1 into alternating current;
the DC/DC module 3 is used for increasing different voltages of the echelon battery clusters 1-1 to preset standard voltage values;
the battery switching module 2 is used for controlling the electrical connection between the echelon battery cluster 1-1 and the DC/DC module 3; and only one group of echelon battery clusters 1-1 is electrically connected with the DC/DC module 3 at any time.
The battery switching module 2 ensures that only one group of echelon battery clusters 1-1 is in a working state at any moment, and when the system detects that the electric quantity of the battery clusters in work is insufficient, the battery switching module switches the battery pack, so that the continuous power supply of the whole device is realized, and the problem that the battery packs with different characteristics cannot be directly connected in parallel for use so as to improve the energy storage capacity is solved.
The device is connected into a commercial power grid through a doubling switch 5.
A plurality of the devices can also be used in parallel.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (2)
1. A multi-gradient battery relay energy storage device comprises at least two battery cluster joints and a PCS (Power conversion System) module, and is characterized in that a DC/DC module is connected in series between the battery cluster joints and the PCS module, and a battery switching module is arranged between the battery cluster joints and the DC/DC module;
the battery cluster joint is used for connecting the echelon battery clusters;
the PCS module is used for converting the direct current of the echelon battery cluster into alternating current;
the DC/DC module is used for increasing the voltage of the echelon battery cluster to a preset standard voltage value;
the battery switching module is used for controlling the electrical connection between the echelon battery clusters and the DC/DC module; and only one group of echelon battery clusters is electrically connected with the DC/DC module at any time.
2. The device for multi-gradient battery relay energy storage according to claim 1, wherein a plurality of groups of the devices for multi-gradient battery relay energy storage are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020198390.9U CN211351723U (en) | 2020-02-24 | 2020-02-24 | Device for relay energy storage of multi-gradient battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020198390.9U CN211351723U (en) | 2020-02-24 | 2020-02-24 | Device for relay energy storage of multi-gradient battery |
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| Publication Number | Publication Date |
|---|---|
| CN211351723U true CN211351723U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020198390.9U Active CN211351723U (en) | 2020-02-24 | 2020-02-24 | Device for relay energy storage of multi-gradient battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081219A (en) * | 2023-10-17 | 2023-11-17 | 东方旭能(山东)科技发展有限公司 | EMS energy storage energy management system |
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2020
- 2020-02-24 CN CN202020198390.9U patent/CN211351723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081219A (en) * | 2023-10-17 | 2023-11-17 | 东方旭能(山东)科技发展有限公司 | EMS energy storage energy management system |
| CN117081219B (en) * | 2023-10-17 | 2024-01-09 | 东方旭能(山东)科技发展有限公司 | EMS energy storage energy management system |
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