CN211670648U - Energy storage system - Google Patents
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- CN211670648U CN211670648U CN202020228000.8U CN202020228000U CN211670648U CN 211670648 U CN211670648 U CN 211670648U CN 202020228000 U CN202020228000 U CN 202020228000U CN 211670648 U CN211670648 U CN 211670648U
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Abstract
The utility model provides an energy storage system, energy storage system is provided with battery monitoring module, logic and judges control module and cuts into and cuts out control module, and logic is judged control module and is carried out the logic analysis to the battery module parameter information of battery monitoring module monitoring, obtains charged state's short slab battery module and discharged state's short slab battery module among the energy storage system to be in charged state or discharged state according to energy storage system, cut into and cut out control module and send control signal, cut into specific battery module and cut out the operation. The problem of energy storage system carry out the available capacity of group battery that causes because the "short plate effect" of battery in the charge-discharge process is limited, can fill the discharge capacity reduction in reality is solved.
Description
Technical Field
The utility model relates to an electric energy storage technical field, in particular to energy storage system.
Background
The global electrochemical energy storage market is rapidly developing, and the battery safety problem caused by the rapid development of the global electrochemical energy storage market is widely concerned all over the world. The main reasons causing the safety problem of the battery are over-temperature, short circuit and internal resistance change caused by over-charge and over-discharge of the battery, thereby causing the explosion and the fire of the battery. In order to ensure the safe and reliable operation of the battery energy storage system, various protection strategies for battery charging and discharging are set in the energy storage system, and when the battery charging reaches a set upper limit value or the battery discharging reaches a set lower limit value, the system can prohibit the battery from continuing to charge and discharge so as to achieve the purpose of protecting the battery. According to the characteristics of the battery, although the consistency of the battery is ensured as much as possible through capacity grading and grouping when a system is formed, the consistency difference of the battery is more and more obvious under the influence of factors such as temperature, charging and discharging multiplying power and the like after long-time charging and discharging, and the available capacity of the battery system is more and more low in order to protect the safety of the battery, namely the short plate effect.
To solve the problem of battery pack capacity reduction caused by the short plate effect of the battery, some utility model patents have proposed solutions. For example, CN105206885A proposes a method for repairing available capacity of a battery pack in an energy storage power station, which requires performing constant-power full charge and full discharge on a plurality of cells before grouping the batteries, recording the voltage of the whole process at equal time intervals, and then obtaining a required curve through complex data processing; and then, fully charging and fully discharging the battery pack at constant power, recording the charge and discharge terminal information of the single battery, and finally, judging whether the battery is charged and discharged independently after the charge and discharge are finished according to a complex algorithm and logic so as to restore the battery capacity. Although the method can repair the available capacity of the battery pack to a certain extent, a large amount of tests and data analysis are needed in the early stage, and the difficulty and the period of system development are increased; in addition, the available capacity of the battery pack can be repaired only after charging and discharging are finished, online repair cannot be realized, repair conditions are harsh, and flexibility is poor.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a technology for increasing the capacity of an energy storage system on line.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: provided is an energy storage system, which can improve the capacity of the energy storage system on line.
The utility model discloses a solution is realized like this: an energy storage system comprising a battery module, and
the battery monitoring module is used for monitoring the parameter information of the battery module;
the logic judgment control module receives the parameter information of the battery module monitored by the battery monitoring module, performs logic analysis on the parameter information to obtain a short-plate battery module in a charging state and a short-plate battery module in a discharging state in the energy storage system, and sends a control signal to the cut-in and cut-out control module according to the charging state or the discharging state of the energy storage system;
and the cut-in and cut-out control module is used for carrying out cut-in and cut-out operation on the specific battery module according to the control signal of the logic judgment control module.
Another technical solution of the present invention is to provide the battery module, which comprises one or more single batteries, battery packs and/or battery modules connected in series and/or in parallel.
On the basis, the other technical scheme of the utility model is that the short-plate battery module in the logic judgment control module, which comprises the charging state, is a battery module with the voltage value of the battery higher than the charging threshold value; or the short-plate battery module in the discharging state is a battery module with the voltage value of the battery lower than the discharging threshold value.
On the basis, the other technical scheme of the utility model is that the short-plate battery module in the logic judgment control module, which comprises the charging state, is the battery module with the internal resistance value lower than the charging threshold value; or, the short-plate battery module in the discharging state is a battery module with the internal resistance value of the battery higher than the discharging threshold value.
The utility model discloses a another technical scheme lies in on the basis of the aforesaid, the logic is judged that specific logic analysis includes that charged state's short slab battery module or discharged state's short slab battery module is higher than the battery module of predetermineeing the threshold value for the temperature of battery among the control module.
The utility model discloses an another technical scheme lies in on above-mentioned basis, battery monitoring module includes at least one of current acquisition module, voltage acquisition module, temperature acquisition module, battery internal resistance acquisition module.
Another technical solution of the present invention is in the above structure, the battery monitoring module further includes a communication module, for communicating with the logic determination control module.
The utility model discloses an another technical scheme lies in on above-mentioned basis, logic judgement control module includes at least one of current data analysis and judgment module, voltage data analysis and judgment module, temperature data analysis and judgment module, battery internal resistance data analysis and judgment module.
According to the technical scheme, above can see, technical scheme have following advantage:
the utility model provides an energy storage system, it is provided with battery monitoring module, logic judgement control module and cuts into surely control module, logic judgement control module carries out logic analysis to the battery module parameter information of battery monitoring module monitoring, obtains charged state's short slab battery module and the short slab battery module of discharge state among the energy storage system, and be in charged state or discharge state according to energy storage system, cut into surely control module and send control signal, cut into surely the operation with specific battery module. The energy storage system judges the short plate battery through the logic judgment control module at the charging and discharging end of the system, and dynamically cuts out the short plate battery through the cut-in and cut-out control module, so that the system can continuously complete charging and discharging, the charging and discharging time of the system is prolonged, and the available electric quantity of the system is improved. The problem of energy storage system carry out the available capacity of group battery that causes because the "short plate effect" of battery in the charge-discharge process is limited, can fill the discharge capacity reduction in reality is solved.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is a block diagram of an energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an energy storage system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto. The description is to be regarded as illustrative and explanatory only and should not be taken as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
An embodiment of the utility model provides an as follows, an energy storage system, including battery module to and
the battery monitoring module is used for monitoring the parameter information of the battery module;
the logic judgment control module receives the parameter information of the battery module monitored by the battery monitoring module, performs logic analysis on the parameter information to obtain a short-plate battery module in a charging state and a short-plate battery module in a discharging state in the energy storage system, and sends a control signal to the cut-in and cut-out control module according to the charging state or the discharging state of the energy storage system;
and the cut-in and cut-out control module is used for carrying out cut-in and cut-out operation on the specific battery module according to the control signal of the logic judgment control module.
Another embodiment of the present invention is to provide the battery module, which comprises one or more single batteries, battery packs and/or battery modules connected in series and/or in parallel.
On the basis, the other embodiment of the present invention is that the short-board battery module including the charging state is a battery module in which the voltage value of the battery is higher than the charging threshold value through the specific logic analysis in the logic judgment control module; or the short-plate battery module in the discharging state is a battery module with the voltage value of the battery lower than the discharging threshold value.
On the basis, the short-plate battery module in the charging state is the battery module with the internal resistance value lower than the charging threshold value; or, the short-plate battery module in the discharging state is a battery module with the internal resistance value of the battery higher than the discharging threshold value.
The utility model discloses a further embodiment lies in on the basis of above-mentioned, the specific logic analysis includes that charged state's short slab battery module or discharged state's short slab battery module is higher than the battery module of predetermineeing the threshold value for the temperature of battery among the logical judgement control module.
The utility model discloses a further embodiment lies in on above-mentioned basis, battery monitoring module includes at least one of electric current collection module, voltage acquisition module, temperature acquisition module, battery internal resistance collection module.
Another embodiment of the present invention is on the above basis, wherein the battery monitoring module further comprises a communication module for communicating with the logic determination control module.
The utility model discloses a further embodiment lies in on above-mentioned basis, logic judgement control module includes at least one of current data analysis and judgment module, voltage data analysis and judgment module, temperature data analysis and judgment module, battery internal resistance data analysis and judgment module.
It should be noted that the cut-in and cut-out control module in the technical solution of the present patent may be any device that functions as a switch.
More specifically, another embodiment of the present invention is based on the above, and as shown in fig. 1, the energy storage system includes a battery parameter collecting module, a cut-in and cut-out module, a battery parameter analyzing and determining module, a cut-in and cut-out control module, and a main control module.
The battery parameter acquisition module: the system comprises a plurality of sub-function modules, including but not limited to a single voltage acquisition module, a single temperature acquisition module, a balance module, a communication module, a control module and the like. The module has the main functions of acquiring and uploading relevant information such as monomer voltage information, temperature information, internal resistance information and the like in real time to the battery parameter analysis and judgment module, so that the battery parameter analysis and judgment module can analyze the battery parameter information at the charging and discharging tail ends, and can judge which monomer is a 'short plate' in the current transient state.
The battery parameter analysis and judgment module: the system comprises a plurality of sub-functional modules, including but not limited to a single voltage data analysis and judgment module, a battery internal resistance data analysis module, a single temperature data analysis and judgment module, an SOC estimation module and the like. The module analyzes and judges the current state of the battery according to the information acquired by the battery parameter acquisition module, and positions the position of the short plate battery so as to provide the main control module for controlling the cut-in and cut-out module to select and cut-in and cut-out the battery.
Cut-in and cut-out control module: and the main control module is connected between the two single batteries or the two battery modules, selects the single batteries or the modules according to the instruction of the main control module, and performs cut-in and cut-out operation on the single batteries or the modules. The module may consist of all devices with switching functions.
The main control module: the main control module is the brain of the whole system, makes logic judgment according to the data analysis and processing of the battery parameter analysis and judgment module and the running state of the system, selects the position of the cut-in and cut-out control module according to the positioning of the short plate battery, and then controls the cut-in and cut-out control module to carry out cut-in and cut-out operation.
As shown in fig. 2, a cell cluster composed of 4 PACKs each having a composition of 2S1P is shown as a schematic diagram. It should be noted that, in fig. 2, the description of the battery cluster composed of 4 battery modules of 2S1P is only illustrative, the number of series-parallel battery cells in the battery module is not limited in the present invention, and the number of series-parallel battery modules is not limited, and the description of the battery cluster composed of 4 battery modules of 2S1P is only for clarity.
The battery parameter acquisition module 1 is connected to each battery cell through a sampling signal wire harness C0/C1/C2 in the PACK1, and is used for acquiring basic information such as voltage and temperature of the battery cells and uploading the acquired basic information to the battery parameter analysis and judgment module through the communication wire harness 1 so as to analyze and process the basic data. The battery parameter acquisition module 2/3/4 functions the same as battery parameter acquisition module 1.
The battery parameter analyzing and judging module is respectively communicated with the battery parameter collecting module 1/2/3/4, collects the basic information of all battery monomers in the system, analyzes and judges the basic information, judges the position of a battery short plate and uploads the position to the main control module, so that the main control module makes logic judgment according to the system running state and sends a corresponding instruction to the cut-in and cut-out control module.
The cut-in/out module 1 is connected between the total positive and total negative of PACK1, and the cut-in/out module can perform a cut-in or cut-out operation on the corresponding PACK.
The cut-in and cut-out control module is connected with the cut-in and cut-out module through a control wire harness 1/2/3/4, the main control module sends a cut-in and cut-out command to the cut-in and cut-out control module according to the judgment result, and the cut-in and cut-out control module controls the corresponding cut-in and cut-out module to execute corresponding operation.
It should be noted that, the basic idea of the above technical solution is to cut out a battery "short plate" according to a certain control strategy through the action of a switch device (various switches, such as an electronic switch or a mechanical switch) at the charge/discharge end when a plurality of batteries are connected in series and in parallel to form a group, so as to prolong the charge/discharge time of the system, thereby increasing the available electric quantity of the system. In the specific example description, for example, when a plurality of batteries are connected in series, the battery "short plate" is cut out through the cut-in and cut-out module, and by applying the technical scheme, when the plurality of batteries are connected in parallel, the battery "short plate" is cut out through the cut-in and cut-out module according to a certain control strategy, even in a battery network in which the batteries are connected in series and in parallel, and the battery "short plate" is cut out through the cut-in and cut-out module according to the certain control strategy, the essential idea is consistent with the technical scheme, and the essential idea is within the protection scope of the patent.
It can be seen from the above embodiments that the technical solution of the present invention has the following advantages:
the utility model provides an energy storage system, energy storage system is provided with battery monitoring module, logic and judges control module and cuts into and surely goes out control module, and logic judges that control module carries out logic analysis to the battery module parameter information of battery monitoring module monitoring, obtains charged state's short slab battery module and discharged state's short slab battery module among the energy storage system to be in charged state or discharged state according to energy storage system, cut into and surely go out control module and send control signal, cut into specific battery module and surely go out the operation. The energy storage system judges the short plate battery through the logic judgment control module at the charging and discharging end of the system, and dynamically cuts out the short plate battery through the cut-in and cut-out control module, so that the system can continuously complete charging and discharging, the charging and discharging time of the system is prolonged, and the available electric quantity of the system is improved. The problem of energy storage system carry out the available capacity of group battery that causes because the "short plate effect" of battery in the charge-discharge process is limited, can fill the discharge capacity reduction in reality is solved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An energy storage system comprising a battery module, characterized by further comprising:
the battery monitoring module is used for monitoring the parameter information of the battery module;
the logic judgment control module receives the parameter information of the battery module monitored by the battery monitoring module, performs logic analysis on the parameter information to obtain a short-plate battery module in a charging state and a short-plate battery module in a discharging state in the energy storage system, and sends a control signal to the cut-in and cut-out control module according to the charging state or the discharging state of the energy storage system;
and the cut-in and cut-out control module is used for carrying out cut-in and cut-out operation on the specific battery module according to the control signal of the logic judgment control module.
2. The energy storage system of claim 1, wherein the battery module comprises one or more single batteries, battery packs, and/or battery modules connected in series and/or in parallel.
3. The energy storage system of claim 2, wherein the logic judgment control module analyzes the short-plate battery module including the charging state according to specific logic, and the short-plate battery module is a battery module with a voltage value higher than a charging threshold value; or the short-plate battery module in the discharging state is a battery module with the voltage value of the battery lower than the discharging threshold value.
4. The energy storage system of claim 2, wherein the logic analysis module analyzes the short-plate battery module including the charging state according to specific logic in the logic judgment control module, and the short-plate battery module is a battery module with an internal resistance value lower than a charging threshold value; or, the short-plate battery module in the discharging state is a battery module with the internal resistance value of the battery higher than the discharging threshold value.
5. The energy storage system of claim 2, wherein the specific logic analysis in the logic judgment control module comprises the short-plate battery module in a charging state or the short-plate battery module in a discharging state, and the specific logic analysis is performed on the battery module with the temperature of the battery higher than a preset threshold value.
6. The energy storage system of any one of claims 1-4, wherein the battery monitoring module comprises at least one of a current collection module, a voltage collection module, a temperature collection module, and a battery internal resistance collection module.
7. The energy storage system of claim 5, wherein the battery monitoring module further comprises a communication module configured to communicate with the logic decision control module.
8. The energy storage system of claim 5, wherein the logic judgment control module comprises at least one of a current data analysis and judgment module, a voltage data analysis and judgment module, a temperature data analysis and judgment module and a battery internal resistance data analysis and judgment module.
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| CN202020228000.8U CN211670648U (en) | 2020-02-28 | 2020-02-28 | Energy storage system |
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| CN202020228000.8U CN211670648U (en) | 2020-02-28 | 2020-02-28 | Energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181226A (en) * | 2020-02-28 | 2020-05-19 | 湘投云储科技有限公司 | Energy storage system and control method thereof |
| CN112865261A (en) * | 2021-03-10 | 2021-05-28 | 阳光电源股份有限公司 | Energy storage battery, application device thereof and charge-discharge control method |
-
2020
- 2020-02-28 CN CN202020228000.8U patent/CN211670648U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181226A (en) * | 2020-02-28 | 2020-05-19 | 湘投云储科技有限公司 | Energy storage system and control method thereof |
| CN112865261A (en) * | 2021-03-10 | 2021-05-28 | 阳光电源股份有限公司 | Energy storage battery, application device thereof and charge-discharge control method |
| CN112865261B (en) * | 2021-03-10 | 2024-04-12 | 阳光电源股份有限公司 | Energy storage battery, application device thereof and charge and discharge control method |
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Denomination of utility model: An energy storage system Effective date of registration: 20230313 Granted publication date: 20201013 Pledgee: Cloud Storage New Energy Technology Co.,Ltd. Pledgor: Xiang investment Cloud Storage Technology Co.,Ltd. Registration number: Y2023980034667 |
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Date of cancellation: 20230714 Granted publication date: 20201013 Pledgee: Cloud Storage New Energy Technology Co.,Ltd. Pledgor: Xiang investment Cloud Storage Technology Co.,Ltd. Registration number: Y2023980034667 |
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Effective date of registration: 20230829 Address after: Floor 1, Building 4, No. 27, Xingyu Road, Zhifu District, Yantai City, Shandong Province, 264004 Patentee after: Cloud Storage New Energy Technology Co.,Ltd. Address before: 410000 1st floor, No.1 office building, Hunan Electronic Information Industry Group Co., Ltd., No.40, Lufeng Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: Xiang investment Cloud Storage Technology Co.,Ltd. |