CN116609680A - Test method of energy storage battery system - Google Patents
Test method of energy storage battery system Download PDFInfo
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- CN116609680A CN116609680A CN202210121934.5A CN202210121934A CN116609680A CN 116609680 A CN116609680 A CN 116609680A CN 202210121934 A CN202210121934 A CN 202210121934A CN 116609680 A CN116609680 A CN 116609680A
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- energy storage
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- 238000004146 energy storage Methods 0.000 title claims abstract description 313
- 238000010998 test method Methods 0.000 title claims description 14
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000007781 pre-processing Methods 0.000 claims abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 238000007599 discharging Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a testing method for a container type battery energy storage system, which is used for testing the charge and discharge performance of the energy storage system and comprises the following steps: providing a first energy storage system and a second energy storage system; connecting the first energy storage system and the second energy storage system in parallel to a control system; preprocessing the first energy storage system and the second energy storage system to enable the charge state of the first energy storage system to be 0 and the charge state of the second energy storage system to be 100%; controlling the second energy storage system to charge the first energy storage system until the state of charge of the second energy storage system is 0 and the state of charge of the first energy storage system is 100%; then, the first energy storage system is controlled to charge the second energy storage system until the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is 100%, the invention can be realized without adding external equipment, and the two energy storage systems are mutually opposite to each other, so that the test of the two energy storage systems is finished simultaneously, the energy consumption is reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to a testing method of an energy storage battery system.
Background
The container type battery energy storage system mainly comprises a container type machine room, a battery pack, a Battery Management System (BMS), an energy storage converter (PCS), an auxiliary control system (a temperature control system, a fire control system and the like) and the like, and has the advantages of small occupied area, convenience in installation and transportation, short construction period, strong environment adaptability, high intelligence and the like, and is applied to modular buildings. After the container battery energy storage system is assembled, the container battery energy storage system needs to be subjected to 100% deep charging and discharging tests to test the characteristics of the container battery energy storage system, such as charging and discharging continuity, rated power operation time length, system charging and discharging efficiency and the like.
The traditional charge and discharge test utilizes a large power grid to carry out a charge test on the energy storage system, and then utilizes the load of a factory to carry out a discharge test on the energy storage system, however, the traditional charge and discharge test has the following problems and risks: 1. when the original factory building power consumption capacity can not meet the power consumption requirement of the charging test of the energy storage system, the capacity needs to be expanded and increased, and equipment such as a transformer, a switch cabinet, a power distribution room and the like and buildings are additionally arranged; 2. the energy storage discharge test needs continuity, the factory load has fluctuation, and the high-power network feeding risk exists.
Disclosure of Invention
The present invention provides a new testing method for a container-type battery energy storage system to solve the above-mentioned problems.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
a test method for a container-type battery energy storage system for testing charge and discharge performance of the energy storage system, wherein the test method comprises:
providing a first energy storage system and a second energy storage system, wherein the specifications of the first energy storage system and the second energy storage system are the same;
connecting the first energy storage system and the second energy storage system in parallel to a control system;
preprocessing the first energy storage system and the second energy storage system to enable the charge state of the first energy storage system to be 0 and the charge state of the second energy storage system to be 100%;
controlling the second energy storage system to charge the first energy storage system until the state of charge of the second energy storage system is 0 and the state of charge of the first energy storage system is 100%;
then, the first energy storage system is controlled to charge the second energy storage system until the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is 100%.
Further, the test method further comprises: the first energy storage system and the second energy storage system are kept stand for a first time period before the first energy storage system is controlled to charge the second energy storage system.
Further, the first duration is not less than 30 minutes.
Further, the second energy storage system is controlled to charge the first energy storage system, if the charge state of the second energy storage system is 0 and the charge state of the first energy storage system does not reach 100%, the auxiliary energy storage system is controlled to charge the first energy storage system until the charge state of the first energy storage system is 100%, and the auxiliary energy storage system, the first energy storage system and the second energy storage system are connected in parallel to the control system.
Further, the first energy storage system is controlled to charge the second energy storage system, and if the state of charge of the first energy storage system is 0 and the state of charge of the second energy storage system does not reach 100%, the auxiliary energy storage system is controlled to charge the second energy storage system until the state of charge of the second energy storage system is 100%.
Further, the preprocessing the first energy storage system and the second energy storage system includes:
and controlling the first energy storage system or the first energy storage system and the auxiliary energy storage system to charge the second energy storage system until the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is 100%.
Further, after the first energy storage system and the second energy storage system are preprocessed, the first energy storage system and the second energy storage system are kept stand for a second period of time.
Further, the second duration is not less than 30 minutes.
Further, after the first energy storage system is controlled to charge the second energy storage system, the second energy storage system and the first energy storage system are controlled to restore to the state before pretreatment.
Further, the controlling the second energy storage system and the first energy storage system to restore to the pre-pretreatment state includes: and controlling the second energy storage system to charge the first energy storage system until the charge states of the first energy storage system and the second energy storage system are both between 30 and 50 percent.
Compared with the prior art, the invention has the beneficial effects that: according to the testing method for the container type battery energy storage system, the two energy storage systems with the same specification are directly adopted to mutually offset, so that the charge and discharge testing of the two energy storage systems is completed at the same time, a power grid is not required to be used for charging, the consumption of extra electric quantity is avoided, an external load is not additionally used in the testing process, the whole testing process is stable, the testing of the two energy storage systems is completed at the same time, and the working efficiency is improved.
Drawings
Fig. 1 is a circuit diagram of the connection of the energy storage systems of the present invention for the testing method of a container-type battery energy storage system.
Fig. 2 is a flow chart of an embodiment of a testing method for a container-type battery energy storage system of the present invention.
Fig. 3 is a flow chart of another embodiment of the testing method of the present invention for a container-type battery energy storage system.
The system comprises a first energy storage system 11-a second energy storage system 12-a second energy storage system 13-an auxiliary energy storage system 10-a current device 14-a control system.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The invention provides a testing method for a container type battery energy storage system, which is used for testing the charge and discharge performance of the energy storage system with the depth of 100 percent so as to test the charge and discharge continuity, rated power operation time length and system charge and discharge efficiency of the container energy storage system.
Specifically, the test method comprises the following steps: the first energy storage system 11, the second energy storage system 12 and the auxiliary energy storage system 13 are provided, wherein the specifications of the first energy storage system 11 and the second energy storage system 12 are the same, the specifications of the auxiliary energy storage system 13 can be the same as those of the first energy storage system 11 and the second energy storage system 12, and can be different, and the first energy storage system 11, the second energy storage system 12 and the auxiliary energy storage system 13 are provided with partial charges when leaving a factory.
Further, the first energy storage system 11, the second energy storage system 12, and the auxiliary energy storage system 13 are connected in parallel to a control system 14, as shown in fig. 1, the first energy storage system 11, the second energy storage system 12, and the auxiliary energy storage system 13 and the dc side of the ac unit 10 included in each are connected in parallel and all in communication with the control system 14, so as to control each energy storage system by the control system 14, and the first energy storage system 11, the second energy storage system 12, and the auxiliary energy storage system 13 and the ac side of the ac unit 10 included in each are connected in parallel to a busbar, so as to realize charge and discharge between each energy storage system.
Further, the first energy storage system 111 and the second energy storage system 12 are preprocessed, and the preprocessing of the first energy storage system 11 and the second energy storage system 12 includes: the first energy storage system 11 is controlled to charge the second energy storage system 12 until the state of charge of the first energy storage system 11 is 0 and the state of charge of the second energy storage system 12 is 100%, so that the first energy storage system 11 can be fully charged and the second energy storage system 13 can be fully discharged in the subsequent testing process.
As a preferred embodiment of the testing method of the present invention, referring to fig. 2 and 3, the preprocessing the first energy storage system 11 and the second energy storage system 12 includes: the first energy storage system 11 and the auxiliary energy storage system 13 charge the second energy storage system 12, that is, the first energy storage system 11 is controlled to charge the second energy storage system 12, when the charge state of the first energy storage system 11 is 0, the second energy storage system 12 does not reach 100% of the charge state due to the loss of the charge amount in the charging process, and then the auxiliary energy storage system 13 is controlled to continuously charge the second energy storage system 12 until the charge state of the second energy storage system 12 is 100%, so that the preprocessing work is completed.
Then, the first energy storage system 11 and the second energy storage system 12 are kept stand for a second period of time, preferably not less than 30 minutes, so as to satisfy that the first energy storage system 11 and the second energy storage system 12 are in a stable state after pretreatment.
The formal test phase then begins: as shown in fig. 2 and 3, the second energy storage system 12 is controlled to charge the first energy storage system 111 until the state of charge of the second energy storage system 12 is 0 and the state of charge of the first energy storage system 11 is 100%, so as to complete the process of deeply charging the first energy storage system 11 and deeply discharging the second energy storage system 12. Namely, the testing process of charging the first energy storage system 11 and discharging the second energy storage system 12 is completed simultaneously in a mode that the two energy storage systems are charged relatively to each other, in the testing process, the first energy storage system 11 is not charged by a power grid, the second energy storage system 12 is not discharged by an external load, extra energy consumption is avoided, and the testing process is stable and accurate.
In some embodiments, the second energy storage system 12 is controlled to charge the first energy storage system 11, and there may be a situation that the state of charge of the second energy storage system 12 is 0 and the state of charge of the first energy storage system 11 does not reach 100%, then the auxiliary energy storage system 13 is controlled to continuously charge the first energy storage system 11 until the state of charge of the first energy storage system 11 is 100%, so as to implement a deep charging process for the first energy storage system 11.
The first energy storage system 11 and the second energy storage system 12 are then left to stand for a first period of time. Preferably, the first duration is not less than 30min, so that both the first energy storage system 11 and the second energy storage system 12 can be in a relatively stable state to improve the accuracy of the test.
Next, the first energy storage system 11 is controlled to charge the second energy storage system 12 until the state of charge of the first energy storage system 11 is 0, and the state of charge of the second energy storage system 12 is 100%, i.e.: and the deep discharging of the first energy storage system 11 and the deep charging of the second energy storage system 12 are completed, the two energy storage systems complete the test simultaneously, the test time is saved, and the test efficiency is improved.
In some embodiments, the first energy storage system 11 is controlled to charge the second energy storage system 12, and there may be a situation that the state of charge of the first energy storage system 11 is 0 and the state of charge of the second energy storage system 12 does not reach 100%, then the auxiliary energy storage system 13 is controlled to continuously charge the second energy storage system 12 until the state of charge of the second energy storage system 12 is 100%, so as to implement a deep charging process for the second energy storage system 12.
In this embodiment, after the first energy storage system 11 is controlled to charge the second energy storage system 12, the second energy storage system 12 and the first energy storage system 11 are controlled to restore to the state before preprocessing, that is, the first energy storage system 11 and the second energy storage system 12 are both attached with a part of charge amount to meet the factory requirement of the energy storage system.
Specifically, the controlling the second energy storage system 12 and the first energy storage system 11 to the pre-pretreatment state includes: the second energy storage system 12 is controlled to charge the first energy storage system 11 until the charge states of the first energy storage system 11 and the second energy storage system 12 are between 30% and 50%, and the partial charge and discharge process between the first energy storage system 11 and the second energy storage system 12 can be realized by other means.
An example of one embodiment of the energy storage system testing method of the present invention: the charge amounts of the first energy storage system 11 and the second energy storage system 12 are 50%; preprocessing an energy storage system: controlling the first energy storage system 11 to charge the second energy storage system 12 so that the charge state of the first energy storage system 11 is 0, and keeping the charge state of the second energy storage system 12 at 100% for 30 min; controlling the second energy storage system 12 to charge the first energy storage system 11 until the state of charge of the second energy storage system 12 is 0 and the state of charge of the first energy storage system 11 is 100%, and then completing the testing process of discharging the second energy storage system 12 and charging the first energy storage system 11; standing for 30min, then controlling the first energy storage system 111 to charge the second energy storage system 2 until the charge state of the first energy storage system 11 is 0 and the charge state of the second energy storage system 12 is 100%, and completing the testing process of charging the second energy storage system 12 and discharging the first energy storage system 11; and then controlling the second energy storage system 12 to partially charge the first energy storage system 11, so that the charge states of the first energy storage system 11 and the second energy storage system 12 are 50% to restore to the state before pretreatment so as to meet the delivery requirement of the energy storage systems.
In summary, according to the testing method for the container type battery energy storage system, the two energy storage systems with the same specification are directly adopted to mutually opposite, and meanwhile, the charge and discharge testing of the two energy storage systems is completed.
It should be understood that although the present disclosure describes embodiments in terms of examples, not every embodiment is provided with a single embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The test method for the container type battery energy storage system is used for testing the charge and discharge performance of the energy storage system and is characterized in that: the test method comprises the following steps:
providing a first energy storage system and a second energy storage system, wherein the specifications of the first energy storage system and the second energy storage system are the same;
connecting the first energy storage system and the second energy storage system in parallel to a control system;
preprocessing the first energy storage system and the second energy storage system to enable the charge state of the first energy storage system to be 0 and the charge state of the second energy storage system to be 100%;
controlling the second energy storage system to charge the first energy storage system until the state of charge of the second energy storage system is 0 and the state of charge of the first energy storage system is 100%;
then, the first energy storage system is controlled to charge the second energy storage system until the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is 100%.
2. A testing method for a container-type battery energy storage system as claimed in claim 1, wherein: the test method further comprises the following steps: the first energy storage system and the second energy storage system are kept stand for a first time period before the first energy storage system is controlled to charge the second energy storage system.
3. A testing method for a container-type battery energy storage system as claimed in claim 2, wherein: the first duration is not less than 30min.
4. A testing method for a container-type battery energy storage system as claimed in claim 2, wherein: and controlling the second energy storage system to charge the first energy storage system, and controlling the auxiliary energy storage system to charge the first energy storage system until the charge state of the first energy storage system is 100% if the charge state of the second energy storage system is 0 and the charge state of the first energy storage system is not 100%, wherein the auxiliary energy storage system, the first energy storage system and the second energy storage system are connected in parallel to the control system.
5. The method of testing a container-type battery energy storage system of claim 4, wherein: and controlling the first energy storage system to charge the second energy storage system, and controlling the auxiliary energy storage system to charge the second energy storage system until the charge state of the second energy storage system is 100% if the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is not 100%.
6. The method of testing a container-type battery energy storage system of claim 4, wherein: the preprocessing of the first energy storage system and the second energy storage system comprises:
and controlling the first energy storage system or the first energy storage system and the auxiliary energy storage system to charge the second energy storage system until the charge state of the first energy storage system is 0 and the charge state of the second energy storage system is 100%.
7. The method of testing a container-type battery energy storage system of claim 6, wherein: and after the first energy storage system and the second energy storage system are preprocessed, standing the first energy storage system and the second energy storage system for a second period of time.
8. The method of testing a container-type battery energy storage system of claim 7, wherein: the second duration is not less than 30 minutes.
9. The method of testing a container-type battery energy storage system of claim 5, wherein: and after the first energy storage system is controlled to charge the second energy storage system, the second energy storage system and the first energy storage system are controlled to recover to the state before pretreatment.
10. A testing method for a container-type battery energy storage system as claimed in claim 9, wherein: the controlling the second energy storage system and the first energy storage system to restore to the state before pretreatment comprises: and controlling the second energy storage system to charge the first energy storage system until the charge states of the first energy storage system and the second energy storage system are both between 30 and 50 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210121934.5A CN116609680A (en) | 2022-02-09 | 2022-02-09 | Test method of energy storage battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210121934.5A CN116609680A (en) | 2022-02-09 | 2022-02-09 | Test method of energy storage battery system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160241057A1 (en) * | 2015-02-12 | 2016-08-18 | Samsung Sdi Co., Ltd. | Multiple parallel energy storage system and controlling method of the same |
| CN106443461A (en) * | 2016-09-06 | 2017-02-22 | 华北电力科学研究院有限责任公司 | Battery energy storage system state assessment method |
| CN108535658A (en) * | 2018-03-29 | 2018-09-14 | 宿迁杉杉运通新能源系统有限公司 | A kind of lithium battery energy storage battery total system test method |
| CN109148977A (en) * | 2017-06-19 | 2019-01-04 | 周锡卫 | One kind being based on cell batteries dynamic monitoring balancer and control method |
| CN112821385A (en) * | 2021-01-04 | 2021-05-18 | 阳光电源股份有限公司 | Control method and device of energy storage system and computer readable storage medium |
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2022
- 2022-02-09 CN CN202210121934.5A patent/CN116609680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160241057A1 (en) * | 2015-02-12 | 2016-08-18 | Samsung Sdi Co., Ltd. | Multiple parallel energy storage system and controlling method of the same |
| CN106443461A (en) * | 2016-09-06 | 2017-02-22 | 华北电力科学研究院有限责任公司 | Battery energy storage system state assessment method |
| CN109148977A (en) * | 2017-06-19 | 2019-01-04 | 周锡卫 | One kind being based on cell batteries dynamic monitoring balancer and control method |
| CN108535658A (en) * | 2018-03-29 | 2018-09-14 | 宿迁杉杉运通新能源系统有限公司 | A kind of lithium battery energy storage battery total system test method |
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