CN212461801U - Battery management system for energy storage power station - Google Patents
Battery management system for energy storage power station Download PDFInfo
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- CN212461801U CN212461801U CN202020650448.9U CN202020650448U CN212461801U CN 212461801 U CN212461801 U CN 212461801U CN 202020650448 U CN202020650448 U CN 202020650448U CN 212461801 U CN212461801 U CN 212461801U
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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
Abstract
The utility model discloses a battery management system for energy storage power station, including battery interface administrative unit, battery interface administrative unit is connected with a plurality of battery management units that form a cluster, and battery management unit is connected with a plurality of battery management units. The utility model discloses a layered design, each independent development of each layer module, subsequent upgrading transformation and the maintenance of being convenient for are changed.
Description
Technical Field
The utility model relates to a battery management system for energy storage power station belongs to energy storage power station battery management technical field.
Background
In the field of battery management of energy storage power stations, in order to guarantee long-term safe and stable operation of the whole system, not only the core component battery pack of the system needs to be monitored and protected, but also the conditions of transformation, maintenance and the like after the power station is put into operation need to be considered. In order to effectively manage the battery pack, a battery management system for the application scene of the energy storage power station needs to be developed.
At present, the research on battery management systems mostly focuses on the application in the field of electric vehicles, the application environment of an energy storage power station is quite different from that of an electric vehicle, the space is abundant, the environment is stable, small deviation is not easy to be perceived in the whole system, and the battery management systems aiming at the application scene of the energy storage power station are fewer. The existing battery management system generally adopts a mode of one master control and a plurality of slave controls, and the master control and the slave controls communicate by adopting a local area network (CAN). The slave control mainly measures the voltage and temperature of one battery pack, sends the values to the master control, and the master control mainly measures the current and voltage of the whole battery pack, receives the data of the slave control, estimates the battery state and carries out various protections and management. A plurality of slave control frameworks of a master control of the existing battery management system are not beneficial to subsequent upgrading, transformation, maintenance and replacement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery management system for energy storage power station has solved the problem that reveals in the background art.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the battery management system for the energy storage power station comprises a battery interface management unit, wherein the battery interface management unit is connected with a plurality of battery cluster management units, and the battery cluster management units are connected with a plurality of battery management units.
The battery interface management unit comprises a first controller, a first communication circuit, a display module and an alarm indicating circuit, wherein the first communication circuit, the display module and the alarm indicating circuit are all connected with the first controller, and the first communication circuit is connected with the battery cluster management unit.
The indicating circuit comprises a power indicating circuit and a plurality of alarm indicating circuits, wherein the power indicating circuit is used for indicating whether power-on is normal or not, and each alarm indicating circuit is used for indicating alarms of different levels.
The battery cluster management unit comprises a second controller, a second communication circuit, a first open circuit, a sampling chip, a bus voltage acquisition circuit, a bus current acquisition circuit and an insulation resistance acquisition circuit;
the second communication circuit, the first open circuit and the sampling chip are all connected with the second controller, and the bus voltage acquisition circuit, the bus current acquisition circuit and the insulation resistance acquisition circuit are all connected with the sampling chip.
The second communication circuit comprises a second communication circuit A, a second communication circuit B and a second communication circuit C, wherein the second communication circuit A is connected with the battery interface management unit, the second communication circuit B is connected with the battery management unit, and the second communication circuit C is standby.
The second controller is also connected with a dial switch.
The battery management unit comprises a third controller, a third communication circuit, a second open-in circuit, a second open-out circuit, a battery management chip, a battery voltage acquisition circuit, a battery temperature acquisition circuit and a balancing circuit;
the third communication circuit, the second open-in circuit, the second open-out circuit and the battery management chip are all connected with the third controller, and the battery voltage acquisition circuit, the battery temperature acquisition circuit and the equalization circuit are all connected with the battery management chip.
The third communication circuit comprises a third communication circuit A and a third communication circuit B, wherein the third communication circuit A is connected with the battery cluster management unit, and the third communication circuit B is standby.
The third controller is also connected with a dial switch.
The utility model discloses the beneficial effect who reaches: the utility model discloses a layered design, each independent development of each layer module, subsequent upgrading transformation and the maintenance of being convenient for are changed.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a block diagram of a battery interface management unit;
FIG. 3 is a block diagram of a battery cluster management unit;
fig. 4 is a block diagram of a battery management unit.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a battery management system for an energy storage power station adopts a top-down layered design, and specifically includes a battery interface management unit, the battery interface management unit is connected to a plurality of battery cluster management units through a CAN bus, and the battery cluster management unit is connected to the plurality of battery management units through the CAN bus; wherein, 5 battery management units are hung under one battery interface management unit at most, and 20 battery management units are hung under one battery cluster at most.
As shown in fig. 2, the battery interface management unit includes a first controller, a first communication circuit, a display module, and an alarm indication circuit, where the first communication circuit, the display module, and the alarm indication circuit are all connected to the first controller; the first communication circuit is a CAN communication circuit and is used for being connected with the battery cluster management unit.
The battery interface management unit is used for displaying information sent by the battery cluster management unit and the battery management unit, the information is displayed by taking the battery cluster as a unit, and the information mainly comprises information such as voltage, battery temperature, SOC (state of charge), alarm and the like of each single battery.
The display module and the input module of the battery interface management unit can adopt a touch display screen, and corresponding system constant values can be manually modified through the touch display screen, so that accurate system calculation and alarm logic judgment of the system are facilitated (the calculation and judgment methods are all consistent with those in the existing battery management system).
The indicating circuit comprises a power indicating circuit and a plurality of alarm indicating circuits, wherein the power indicating circuit is used for indicating whether power-on is normal or not, namely, an indicating lamp of the power indicating circuit is normally on (green) after power-on, each alarm indicating circuit is used for indicating alarms of different levels, 2 alarm indicating circuits are generally arranged, 1 alarm indicating circuit is used for indicating one-level alarm (serious alarm), and the other alarm indicating circuit indicates two-level or three-level alarm (general alarm).
The first controller adopts an MC9S12XEP100MAL singlechip of Feichka, and the singlechip has rich pin resources, wide working temperature range, wide application in the field of electric vehicles and convenient transplantation.
As shown in fig. 3, the battery cluster management unit includes a second controller, a second communication circuit, a first open circuit, a sampling chip, a bus voltage acquisition circuit, a bus current acquisition circuit, and an insulation resistance acquisition circuit; second communication circuit, first circuit, the first circuit and the sampling chip of opening all are connected with the second controller of opening, and wherein the sampling chip passes through SPI and is connected with the second controller, and bus voltage acquisition circuit, bus current acquisition circuit and insulation resistance acquisition circuit all are connected with the sampling chip.
The second communication circuit is a CAN communication circuit and comprises a second communication circuit A, a second communication circuit B and a second communication circuit C; the second communication circuit A is connected with the battery interface management unit, uploads and forwards information to the battery interface management unit, and receives an instruction issued by the battery interface management unit; the second communication circuit B is connected with the battery management unit, receives information sent by the battery management unit and sends an instruction to the battery management unit, and the second communication circuit C is standby and convenient to upgrade, reform and expand.
The bus voltage acquisition circuit, the bus current acquisition circuit and the insulation resistance acquisition circuit are respectively provided with 2 paths, 2 paths and 4 paths, and the bus voltage, the bus current and the insulation resistance are respectively acquired. The ADS8588 is adopted by the sampling chip, and the second controller reads sampled data through the SPI.
The first open circuit (DI circuit) and the first open circuit (DO circuit) are respectively 6 paths and 5 paths and are used for receiving alarm information and outputting information, wherein the first open circuit of 1 path is used for starting and stopping the fan.
The second controller adopts an MC9S12XEP100MAL singlechip of Feichka, and the singlechip has rich pin resources, wide working temperature range, wide application in the field of electric vehicles and convenient transplantation.
The battery cluster management unit calculates SOC by adopting an ampere-hour integration method according to battery data sent by the battery management unit and data such as bus voltage, bus current and insulation resistance acquired by the battery cluster management unit, and simultaneously performs alarm logic judgment (the calculation and judgment methods are consistent with those in the conventional battery management system), and the SOC calculated value and alarm information are transmitted to the battery interface management unit on a second communication circuit A of the battery cluster management unit for interface display.
As shown in fig. 4, the battery management unit includes a third controller, a third communication circuit, a second open circuit, a battery management chip, a battery voltage acquisition circuit, a battery temperature acquisition circuit, and an equalizing circuit; the third communication circuit, the second open circuit and the battery management chip are all connected with the third controller, wherein the battery management chip is connected with the third controller through the SPI, and the battery voltage acquisition circuit, the battery temperature acquisition circuit and the equalization circuit are all connected with the battery management chip.
The third communication circuit comprises a third communication circuit A and a third communication circuit B, wherein the third communication circuit A is connected with the battery cluster management unit and uploads information such as sampled battery voltage, battery temperature and the like; the third communication circuit B is standby, and is convenient for upgrading, reconstruction and expansion.
The battery management chip adopts LTC6811 and is provided with 12 battery voltage sampling loops for sampling the voltage of a single battery. The battery management unit adopts a passive balance scheme and discharges the unbalanced battery loop through an external discharge resistor. The battery temperature acquisition circuit adopts any one path of GPIO pins of the battery management chip LTC6811 to receive temperature data, adopts a multi-way switch to select different sampling loops, and has 16 paths of battery temperature acquisition circuits in total. The second open circuit and the second open circuit are 2-way and 3-way respectively and are used for receiving alarm information and outputting information, wherein the 1-way second open circuit loop is used for starting and stopping the fan.
The battery cluster management unit and the battery management unit module software can be repeatedly used, each module is internally provided with an 8-bit dial switch, namely, the dial switch of the battery cluster management unit is connected with the second controller, and the dial switch of the battery management unit is connected with the third controller. The serial numbers of the modules in the battery management system are marked through dial switches. For example, the 1 st battery management unit designs its own dial switch as 00000001 and integrates it into the message ID of the battery management unit No. 1, so that in the whole battery management system, it can know that the message is sent from the battery management unit No. 1 by analyzing the ID of the message.
The system adopts a layered design, each module of each layer is independently developed, the protection level of the module is convenient to improve, the subsequent upgrading and the maintenance and the replacement are convenient, simultaneously, the module software of the same type can be repeatedly utilized, the software does not need to be changed, different modules can be identified through dial switches of the modules, the configuration is flexible, and the expandability is strong.
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 variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (9)
1. A battery management system for an energy storage power station, characterized by: the battery management system comprises a battery interface management unit, wherein the battery interface management unit is connected with a plurality of battery cluster management units, and the battery cluster management units are connected with a plurality of battery management units.
2. A battery management system for an energy storage power plant according to claim 1, characterized in that: the battery interface management unit comprises a first controller, a first communication circuit, a display module and an alarm indicating circuit, wherein the first communication circuit, the display module and the alarm indicating circuit are all connected with the first controller, and the first communication circuit is connected with the battery cluster management unit.
3. A battery management system for an energy storage power plant according to claim 2, characterized in that: the indicating circuit comprises a power indicating circuit and a plurality of alarm indicating circuits, wherein the power indicating circuit is used for indicating whether power-on is normal or not, and each alarm indicating circuit is used for indicating alarms of different levels.
4. A battery management system for an energy storage power plant according to claim 1, characterized in that: the battery cluster management unit comprises a second controller, a second communication circuit, a first open circuit, a sampling chip, a bus voltage acquisition circuit, a bus current acquisition circuit and an insulation resistance acquisition circuit;
the second communication circuit, the first open circuit and the sampling chip are all connected with the second controller, and the bus voltage acquisition circuit, the bus current acquisition circuit and the insulation resistance acquisition circuit are all connected with the sampling chip.
5. A battery management system for an energy storage power plant according to claim 4, characterized in that: the second communication circuit comprises a second communication circuit A, a second communication circuit B and a second communication circuit C, wherein the second communication circuit A is connected with the battery interface management unit, the second communication circuit B is connected with the battery management unit, and the second communication circuit C is standby.
6. A battery management system for an energy storage power plant according to claim 4, characterized in that: the second controller is also connected with a dial switch.
7. A battery management system for an energy storage power plant according to claim 1, characterized in that: the battery management unit comprises a third controller, a third communication circuit, a second open-in circuit, a second open-out circuit, a battery management chip, a battery voltage acquisition circuit, a battery temperature acquisition circuit and a balancing circuit;
the third communication circuit, the second open-in circuit, the second open-out circuit and the battery management chip are all connected with the third controller, and the battery voltage acquisition circuit, the battery temperature acquisition circuit and the equalization circuit are all connected with the battery management chip.
8. A battery management system for an energy storage power plant according to claim 7, characterized in that: the third communication circuit comprises a third communication circuit A and a third communication circuit B, wherein the third communication circuit A is connected with the battery cluster management unit, and the third communication circuit B is standby.
9. A battery management system for an energy storage power plant according to claim 7, characterized in that: the third controller is also connected with a dial switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020650448.9U CN212461801U (en) | 2020-04-26 | 2020-04-26 | Battery management system for energy storage power station |
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| CN202020650448.9U CN212461801U (en) | 2020-04-26 | 2020-04-26 | Battery management system for energy storage power station |
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| CN212461801U true CN212461801U (en) | 2021-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117277391A (en) * | 2023-11-22 | 2023-12-22 | 成都特隆美储能技术有限公司 | BMS management system suitable for household energy storage and small-size energy storage |
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- 2020-04-26 CN CN202020650448.9U patent/CN212461801U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117277391A (en) * | 2023-11-22 | 2023-12-22 | 成都特隆美储能技术有限公司 | BMS management system suitable for household energy storage and small-size energy storage |
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