CN218526112U - Energy storage battery management system - Google Patents
Energy storage battery management system Download PDFInfo
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- CN218526112U CN218526112U CN202221866859.7U CN202221866859U CN218526112U CN 218526112 U CN218526112 U CN 218526112U CN 202221866859 U CN202221866859 U CN 202221866859U CN 218526112 U CN218526112 U CN 218526112U
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Abstract
The utility model discloses an energy storage battery management system, include: an upper computer; the main control module comprises a first main control unit and a second main control unit which are in mutual redundant backup and are respectively connected with a first communication interface and a second communication interface of the upper computer through respective third communication interfaces and fourth communication interfaces to form a first communication link and a second communication link; the plurality of slave control modules are respectively connected with the fifth communication interface of the first master control unit and the sixth communication interface of the second master control unit through respective seventh communication interfaces and are accessed into the first communication link; the sixth communication interface of the second main control unit and the fifth communication interface of the first main control unit are connected through the eighth communication interface, and the second communication link is accessed; the plurality of battery modules are used for acquiring the state information of the corresponding battery modules by the slave control module and feeding the state information back to the master control module; and the charging contactor and the discharging contactor are controlled to act by the main control module respectively. The problem that when a plurality of control units of an existing battery management system are hung on the same bus and a certain node goes wrong, the whole line cannot work normally can be solved.
Description
Technical Field
The utility model relates to a battery technology field, more specifically relates to an energy storage battery management system.
Background
The energy storage battery management system is usually used as a backup power supply outside the power supply of the power grid, and when the power grid fails and cannot supply power to the load continuously, the system is switched to a battery power supply mode to support the normal operation of the load. Since the voltage of a single battery is not low enough to meet most load power requirements, energy storage battery management systems typically consist of multiple cells connected in series and parallel. Due to the difference between the single batteries and the phenomenon of insufficient battery power or battery overshoot during the charging and discharging processes of the batteries, the normal power supply of the battery pack and the stable and reliable work of the battery pack can be influenced. Therefore, the voltage of each single battery needs to be detected and monitored during the use process of the battery, and then equalization measures are taken to maintain the consistent characteristics of the battery units. In addition, the battery pack has large working current and is generally installed in a closed narrow space, so that the service life of the battery pack is often damaged due to high temperature of the battery pack, and the state detection of the battery pack is needed. A Battery Management System (BMS) is used to detect and manage the battery state while interacting and communicating with users.
The existing battery management system adopts a master-slave topology structure, also called a distributed structure, and utilizes a CAN bus to manage and communicate each unit.
SUMMERY OF THE UTILITY MODEL
At least one defect or improvement demand to prior art, the utility model provides an energy storage battery management system aims at solving current battery management system's a plurality of the control unit and all hangs at same bus, the unable normal problem of working of whole circuit when leading to a certain node to go wrong.
To achieve the above object, according to a first aspect of the present invention, there is provided an energy storage battery management system, including: the upper computer comprises a first communication interface and a second communication interface; the main control module comprises a first main control unit and a second main control unit which are in mutual redundant backup, and the first main control unit and the second main control unit are respectively connected with the first communication interface of the upper computer through respective third communication interfaces to form a first communication link and are connected with the second communication interface of the upper computer through respective fourth communication interfaces to form a second communication link; the plurality of slave control modules are respectively connected with the fifth communication interface of the first master control unit and the sixth communication interface of the second master control unit through respective seventh communication interfaces and are accessed into the first communication link; the sixth communication interface of the second main control unit and the fifth communication interface of the first main control unit are connected through respective eighth communication interfaces, and the second communication link is accessed; the plurality of battery modules are respectively connected with the slave control modules corresponding to the battery modules, so that the slave control modules acquire the state information of the battery modules and feed the state information back to the master control module; and the charging contactor and the discharging contactor are controlled to act by the main control module respectively, wherein the charging contactor is connected between the battery module and a power grid, and the discharging contactor is connected between the battery module and a load.
In an embodiment of the present invention, each of the slave control modules includes a first slave control unit and a second slave control unit which are redundant and backup to each other, and respectively includes the corresponding seventh communication interface and the eighth communication interface.
The present invention provides an embodiment, wherein the first communication interface, the second communication interface, the third communication interface, the fourth communication interface, the fifth communication interface, the sixth communication interface, the seventh communication interface and the eighth communication interface all adopt CAN communication interfaces.
In an embodiment of the present invention, the charging contact includes a first charging contact unit and a second charging contact unit that are redundant and backup to each other, and are respectively connected to the first main control unit and the second main control unit; the discharge contactor comprises a first discharge contact unit and a second discharge contact unit which are redundant backups of each other and are respectively connected with the first main control unit and the second main control unit.
In one embodiment of the present invention, the charging contactor and the discharging contactor are connected to the grid and the load through a converter.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect at least:
1) The main control module is subjected to dual-redundancy hot backup on the electrical design of hardware, each of the two main control units comprises four communication interfaces, the third communication interface and the fourth communication interface of the main control module are respectively connected with the first communication interface and the second communication interface of the upper computer to form two communication networks which are backed up with each other, the fifth communication interface of the first main control unit and the sixth communication interface of the second main control unit are connected with the seventh communication interface of the slave control unit, the fifth communication interface of the second main control unit and the sixth communication interface of the first main control unit are connected with the eighth communication interface of the slave control unit, a communication framework of cross-redundancy backup between the main control units and the slave control units is realized, the anti-interference capability of the two communication networks is greatly enhanced, and even if the fifth communication interface or the sixth communication interface of the main control module fails, the two communication networks accessed by the main control module can still stably run;
2) The slave control unit, the charging contactor and the discharging contactor all adopt 1+1 redundant hot backup to ensure the reliable operation of the modules, and the connecting wires among the modules all adopt two parallel connecting wires to ensure the reliability of the connecting wires, so that the system can be suitable for occasions with requirements on the reliability of a power supply system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without any inventive work.
Fig. 1 is a schematic structural diagram of an energy storage battery management system according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The terms "first," "second," "third," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
As shown in fig. 1, a first embodiment of the present invention provides an energy storage Battery Management System (BMS), for example, including: the system comprises an upper computer, a master control module, a plurality of slave control modules, a plurality of battery modules, a charging contactor, a discharging contactor and a charging contactor, wherein the battery modules correspond to the slave control modules one by one, and the charging contactor controls an accessed power supply grid and the discharging contactor controls an accessed load.
Reference herein to a higher-level computer is made, for example, to a personal computer, hand-held device, portable device, tablet device, multiprocessor system, microprocessor-based system, editable consumer electronics, network PC, minicomputer, mainframe computer, distributed computing environment that includes any of the above systems or devices, and the like. The upper computer and the main control module are communicated with each other in a 1+1 hot backup mode, specifically, the upper computer comprises a first communication interface and a second communication interface, a third communication interface of the main control module is connected with the first communication interface of the upper computer to form a first communication link, and the fourth communication interface is connected with the second communication interface of the upper computer to form a second communication link.
Further, the main control module includes, for example, a first main control Unit and a second main control Unit that are redundant and backup with each other, and the mentioned main control Unit is a Battery Management Unit (BMU) and is used for communicating and interacting with an upper computer, acquiring an upper computer control instruction to control a power grid to charge the Battery module when the charging contactor is closed, and controlling a load to discharge the Battery module when the discharging contactor is closed.
The two master control units are respectively provided with a fifth communication interface and a sixth communication interface besides the third communication interface and the fourth communication interface, and the plurality of slave control modules are respectively connected with the fifth communication interface of the first master control unit and the sixth communication interface of the second master control unit through respective seventh communication interfaces and are accessed into the first communication link; and the sixth communication interface of the second main control unit and the fifth communication interface of the first main control unit are connected through respective eighth communication interfaces, and the second communication link is accessed. Therefore, a communication framework of cross redundancy backup between the master control unit and the slave control unit is realized, the anti-interference capability of the two paths of communication networks is greatly enhanced, and the two paths of communication networks accessed by the master control module can still stably operate even if the fifth or sixth communication interface of the master control module fails.
Furthermore, each slave control module comprises, for example, a first slave control unit and a second slave control unit which are redundant backup with each other, and each of the first slave control unit and the second slave control unit comprises a corresponding seventh communication interface and an eighth communication interface, and the first slave control unit and the second slave control unit are connected in the cross-redundancy backup manner, so as to further improve the reliability of the system. The slave control Unit is a Cell Monitor Unit (CMU) and is configured to measure state information of the corresponding battery module, such as voltage, current, and temperature, and feed back the state information to the BMU. The BMU can evaluate the data transmitted by the CMU, if the data is abnormal, the BMU can protect the battery and send out the requirement of reducing the current, or cut off the charge and discharge path to avoid the battery exceeding the allowable use condition, and simultaneously manage the electric quantity and the temperature of the battery. In addition, parameters and states needing warning can be judged according to a control strategy designed previously, warning information is sent to an upper computer, and finally the warning information is transmitted to an operator.
Furthermore, the first communication interface, the second communication interface, the third communication interface, the fourth communication interface, the fifth communication interface, the sixth communication interface, the seventh communication interface and the eighth communication interface all adopt CAN communication interfaces, for example, so as to form two CAN bus communication networks among the upper computer, the master control module and the slave control module, thereby improving the reliability of the system.
The charging contactor is connected between the battery module and a power grid, the discharging contactor is connected between the battery module and a load, and the main control module controls the charging contactor and the discharging contactor to be switched on and off. Specifically, for example, the main control unit performs judgment processing after receiving the state information of the battery pack, and if the battery pack is in a full charge state, the main control unit controls the discharge contactor to be closed, so that the battery pack discharges to the load; and if the electric quantity of the battery pack is lower than a certain degree, the main control unit controls the charging contact to be closed, so that the battery pack is charged by the power grid. And converters are connected between the charging contactor and the power grid and between the discharging contactor and the load to realize alternating current-direct current conversion or direct current-alternating current conversion.
Furthermore, the charging contact device comprises a first charging contact unit and a second charging contact unit which are redundant backup with each other and are respectively connected with the first main control unit and the second main control unit; the discharging contactor comprises a first discharging contact unit and a second discharging contact unit which are redundant and backup with each other, and the first discharging contact unit and the second discharging contact unit are respectively connected with the first main control unit and the second main control unit, so that the slave control unit, the charging contactor and the discharging contactor all adopt 1+1 redundant hot backup to ensure the reliable operation of the modules, and the connecting wires among the modules all adopt two parallel connecting wires to ensure the reliability of the connecting wires, so that the discharging contactor can be suitable for occasions with requirements on the reliability of a power supply system.
To sum up, the embodiment of the present invention provides an energy storage battery management system, through with the dual redundancy hot backup of host system on hardware electrical design, two host systems include four communication interfaces each, its third, fourth communication interface connects the first of host computer, the second communication interface respectively, form two communication networks of mutual backup, and the fifth communication interface of first host system and the sixth communication interface of second host system connect the seventh communication interface of slave unit, the fifth communication interface of second host system and the sixth communication interface of first host system connect the eighth communication interface of slave unit, the host system of cross redundancy backup between host system and slave unit has been realized, the interference killing feature of two communication networks strengthens greatly, even if the fifth or sixth communication interface of host system breaks down, the communication network that its access still can the steady operation; the slave control unit, the charging contactor and the discharging contactor all adopt 1+1 redundant hot backup to ensure the reliable operation of the modules, and the connecting wires among the modules all adopt two parallel connecting wires to ensure the reliability of the connecting wires, so that the system can be suitable for occasions with requirements on the reliability of a power supply system.
The above description is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure should not be limited thereby. That is, all equivalent changes and modifications made in accordance with the teachings of the present disclosure are intended to be included within the scope of the present disclosure. Embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. The invention is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. An energy storage battery management system, comprising:
the upper computer comprises a first communication interface and a second communication interface;
the main control module comprises a first main control unit and a second main control unit which are in mutual redundant backup, and the first main control unit and the second main control unit are respectively connected with the first communication interface of the upper computer through respective third communication interfaces to form a first communication link and are connected with the second communication interface of the upper computer through respective fourth communication interfaces to form a second communication link;
the plurality of slave control modules are respectively connected with the fifth communication interface of the first master control unit and the sixth communication interface of the second master control unit through respective seventh communication interfaces and are accessed into the first communication link; the sixth communication interface of the second main control unit and the fifth communication interface of the first main control unit are connected through respective eighth communication interfaces, and the second communication link is accessed;
the plurality of battery modules are respectively connected with the corresponding slave control modules, so that the slave control modules collect the state information of the battery modules and feed the state information back to the master control module;
and the charging contactor and the discharging contactor are controlled to act by the main control module respectively, wherein the charging contactor is connected between the battery module and a power grid, and the discharging contactor is connected between the battery module and a load.
2. The energy storage battery management system according to claim 1, wherein each slave control module comprises a first slave control unit and a second slave control unit that are redundant with each other, and each slave control unit comprises the corresponding seventh communication interface and the eighth communication interface.
3. The energy storage battery management system according to claim 1, wherein the first communication interface, the second communication interface, the third communication interface, the fourth communication interface, the fifth communication interface, the sixth communication interface, the seventh communication interface, and the eighth communication interface all employ CAN communication interfaces.
4. The energy storage battery management system according to claim 1, wherein the charging contactor comprises a first charging contact unit and a second charging contact unit which are redundant and backup to each other, and are respectively connected with the first main control unit and the second main control unit; the discharge contactor comprises a first discharge contact unit and a second discharge contact unit which are redundant backups of each other and are respectively connected with the first main control unit and the second main control unit.
5. The energy storage battery management system of claim 1, wherein the charging contactor and the discharging contactor are connected to the grid and the load through a converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221866859.7U CN218526112U (en) | 2022-07-19 | 2022-07-19 | Energy storage battery management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221866859.7U CN218526112U (en) | 2022-07-19 | 2022-07-19 | Energy storage battery management system |
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| CN218526112U true CN218526112U (en) | 2023-02-24 |
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| CN202221866859.7U Active CN218526112U (en) | 2022-07-19 | 2022-07-19 | Energy storage battery management system |
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