CN109995097B - Power-on control method, device and system, computer device and storage medium - Google Patents
Power-on control method, device and system, computer device and storage medium Download PDFInfo
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- CN109995097B CN109995097B CN201711484222.5A CN201711484222A CN109995097B CN 109995097 B CN109995097 B CN 109995097B CN 201711484222 A CN201711484222 A CN 201711484222A CN 109995097 B CN109995097 B CN 109995097B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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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Abstract
The invention provides a power-on control method, a power-on control device, a power-on control system, a computer device and a storage medium, which are applied to a large-scale multi-battery-cluster energy storage system. The power-on control method provided by the invention comprises the steps of judging whether the maximum value of the pressure difference among all battery clusters in the energy storage system is smaller than a preset pressure difference value or not when the energy storage system is in a low-voltage power-on state; if the judgment result is yes, acquiring the cluster number of the normal battery cluster in the energy storage system; if the number of the normal battery clusters is larger than a first preset number of clusters, pre-charging each normal battery cluster; acquiring the number of clusters of a pre-charged normal battery cluster in the energy storage system; and if the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number, adjusting the power-on state of the energy storage system to a normal power-on state. By utilizing the power-on control method provided by the invention, the safety and the use efficiency of the large energy storage system can be better considered.
Description
Technical Field
The invention relates to the field of large-scale energy storage systems, in particular to a power-on control method, a power-on control device, a power-on control system, a computer device and a storage medium.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims and the detailed description. The description herein is not admitted to be prior art by inclusion in this section.
At present, the technology of a large energy storage system formed by connecting a plurality of battery clusters in parallel is not mature, and the safety is very important in view of more batteries arranged in the large energy storage system. Meanwhile, the use efficiency of the large energy storage system can greatly influence the overall benefit of the energy storage system, but the existing large energy storage system cannot well take the system safety and the use efficiency into consideration.
Disclosure of Invention
In view of the above, the present invention provides a power-on control method, device, system, computer device and storage medium, so as to better consider the safety and the utilization efficiency of a large energy storage system.
The invention provides a power-on control method, which is applied to a large-scale multi-battery-cluster energy storage system and comprises the following steps:
when the energy storage system is in a low-voltage power-on state, judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value or not;
if the judgment result is yes, acquiring the cluster number of the normal battery cluster in the energy storage system;
if the number of the normal battery clusters is larger than a first preset number of clusters, pre-charging each normal battery cluster;
acquiring the number of clusters of a pre-charged normal battery cluster in the energy storage system;
and if the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number, adjusting the power-on state of the energy storage system to a normal power-on state.
Further, the pre-charging each of the normal battery clusters includes:
acquiring a voltage value of each normal battery cluster;
and pre-charging each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
Further, the adjusting the power-on state of the energy storage system to the normal power-on state includes:
if the number of the clusters of the pre-charged normal battery cluster is larger than the second preset number of clusters, judging whether the energy storage system meets the insulation requirement;
and if so, adjusting the power-on state of the energy storage system to a normal power-on state.
Further, between the pre-charging each normal battery cluster and acquiring the number of clusters of the pre-charged normal battery clusters in the energy storage system, the method further includes:
acquiring a pre-charging current value for pre-charging each normal battery cluster;
and if the pre-charging current value is smaller than the preset current value, determining that the corresponding normal battery cluster is a pre-charging normal battery cluster.
Further, after the obtaining of the pre-charge current value for pre-charging each of the normal battery clusters, the method further includes:
if the pre-charging current value is greater than or equal to the preset current value, determining that the corresponding normal battery cluster is a pre-charging abnormal battery cluster;
and maintaining the abnormal pre-charged battery cluster.
The second aspect of the present invention provides a power-on control device, which is applied to a large-scale multi-battery-cluster energy storage system, and the power-on control device includes:
the judging module is used for judging whether the maximum value of the pressure difference between the battery clusters in the energy storage system is smaller than a preset pressure difference value or not when the energy storage system is in a low-voltage power-on state;
the acquiring module is used for acquiring the number of clusters of normal battery clusters in the energy storage system when the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value; acquiring the cluster number of a pre-charged normal battery cluster in the energy storage system;
the pre-charging module is used for pre-charging each normal battery cluster when the cluster number of the normal battery cluster is larger than a first preset cluster number;
and the adjusting module is used for adjusting the power-on state of the energy storage system to a normal power-on state when the number of the clusters of the pre-charged normal battery cluster is greater than a second preset number of clusters.
Further, the obtaining module is further configured to obtain a voltage value of each normal battery cluster;
the pre-charging module is further used for pre-charging each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
Further, when the number of the clusters of the pre-charged normal battery cluster is greater than the second preset number of clusters, the determining module is specifically configured to determine whether the energy storage system meets the insulation requirement;
and the adjusting module is used for adjusting the power-on state of the energy storage system to a normal power-on state when the energy storage system meets the insulation requirement.
Further, the obtaining module is further configured to obtain a pre-charging current value for pre-charging each normal battery cluster;
and the determining module is used for determining that the corresponding normal battery cluster is a pre-charged normal battery cluster when the pre-charging current value is smaller than the preset current value.
Further, the determining module is further configured to determine that the corresponding normal battery cluster is a pre-charged abnormal battery cluster when the pre-charging current value is greater than or equal to the preset current value;
the pre-charging module is also used for performing maintenance processing on the pre-charging abnormal battery cluster.
The third aspect of the present invention also provides a power-on control system, which includes the above power-on control device.
A fourth aspect of the present invention further provides a computer apparatus, which includes a processor, and the processor is configured to implement the steps of the power-on control method as described above when executing the computer program stored in the memory.
The fifth aspect of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the power-on control method as described above.
According to the power-on control method and device and the computer readable storage medium provided by the invention, when the energy storage system is in a low-voltage power-on state, whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value or not is judged, and when the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than the preset pressure difference value, a further power-on process is allowed to be carried out, so that the safety detection of the pressure difference is realized, and the power-on safety of the energy storage system is improved. And after the pressure difference safety detection is passed, acquiring the cluster number of the normal battery cluster in the energy storage system, and allowing a further electrifying process to be carried out when the cluster number of the normal battery cluster reaches the requirement of being more than a first preset cluster number so as to meet the operation requirement of the energy storage system. And after each normal battery cluster is precharged, acquiring the cluster number of the precharged normal battery cluster in the energy storage system, and adjusting the power-on state of the energy storage system to a normal power-on state when the cluster number of the precharged normal battery cluster is greater than a second preset cluster number. Through the arrangement of the pre-charging step, the voltage of each normal battery cluster can be pulled to be equal or similar, the potential safety hazard caused by overlarge circulating current among the normal battery clusters is prevented, and the power-on safety of the energy storage system is further improved. Meanwhile, when the number of the clusters of the normal battery cluster is larger than the first preset cluster number, and the number of the clusters of the pre-charged normal battery cluster is larger than the second preset cluster number, the energy storage system is normally powered on, and a worker can determine the first preset cluster number and the second preset cluster number according to the current operation requirement of the energy storage system, so that the use efficiency of the energy storage system is considered, and even if part of the battery clusters go wrong, other battery clusters which do not go wrong can still support the operation of the energy storage system under the condition of meeting the operation requirement of the energy storage system.
Furthermore, when the number of the normal battery clusters is larger than the first preset number of the clusters, the voltage value of each normal battery cluster is obtained, and each normal battery cluster is pre-charged in a descending order according to the voltage value of each normal battery cluster, so that the problem of overlarge circulation among the normal battery clusters is favorably solved, and the safety of the energy storage system is further improved
Furthermore, the invention can adjust the power-on state of the energy storage system to the normal power-on state by judging whether the energy storage system meets the insulation requirement or not when the cluster number of the pre-charged normal battery cluster is larger than a second preset cluster number, and when the energy storage system meets the insulation requirement, the power-on state of the energy storage system is adjusted to the normal power-on state, so that the possibility of potential safety hazards caused by the fact that the energy storage system does not meet the insulation requirement is reduced, and the power-on safety of the energy storage system is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a power-on control method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a power-on control method according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a power-on control method according to a third embodiment of the present invention;
FIG. 4 is an exemplary functional block diagram of a power-on control apparatus provided in one embodiment of the present invention;
FIG. 5 is a schematic diagram of an exemplary configuration of a power-on control system provided in an embodiment of the present invention;
fig. 6 is a schematic diagram of an exemplary structure of a computer device according to an embodiment of the present invention.
Description of the main elements
Power-on control device 100
Judging module 11
Adjusting module 14
Power-on control system 2
Electrical parameter detection device 21
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be made with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a flowchart of a power-on control method according to a first embodiment of the present invention, and it should be noted that the power-on control method according to the embodiment of the present invention is not limited to the steps and the sequence in the flowchart shown in fig. 1. Steps in the illustrated flowcharts may be added, removed, or changed in order according to various needs.
As shown in fig. 1, the power-on control method according to this embodiment is applied to a large-scale multi-battery-cluster energy storage system, and may include the following steps:
step 101: and when the energy storage system is in a low-voltage power-on state, judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value.
In this embodiment, the low-voltage power-on state may be a state in which a Battery Management System (BMS) of the energy storage System is currently powered by 12/24V.
It will be appreciated that the energy storage system may include a plurality of battery clusters, and that certain pressure differentials may exist between the plurality of battery clusters.
In this embodiment, the preset differential pressure value is a reference value obtained by integrating the power distribution condition and the operation condition of the whole energy storage system, so as to meet the requirement of the safety differential pressure for operating the energy storage system.
It can be understood that the voltage of each battery cluster can be detected by the detection circuit of the battery management system of the energy storage system, so that the voltage difference value between each battery cluster can be obtained, the maximum value of the voltage difference can be obtained by comparing the voltage difference values, and the obtained maximum value of the voltage difference can be compared with the preset voltage difference value to obtain the judgment result.
Step 102: and if so, acquiring the cluster number of the normal battery cluster in the energy storage system.
In this embodiment, the number of normal battery clusters is the number of battery clusters that can normally operate when and/or during the energy storage system is in the low-voltage power-on state.
It will be appreciated that the normal operation may be that the battery cluster is normally discharged and/or charged, which may be based on the result of normality or abnormality of the independent battery detection circuit, or may be detected by the aforementioned detection circuit of the battery management system to obtain the result of normality or abnormality.
Step 103: and if the number of the clusters of the normal battery clusters is greater than a first preset number of clusters, pre-charging each normal battery cluster.
In this embodiment, the first preset cluster number may be a default cluster number of the system, or may be a cluster number customized by a worker.
It is understood that the first predetermined cluster number is a set value for supporting the energy storage system to meet certain usage efficiency requirements, and thus the value thereof may be relatively determined according to specific requirements.
In this embodiment, by pre-charging the normal battery clusters, the voltages of the battery clusters in the energy storage system can be pulled to equal or similar voltages, and the situation of excessive circulating current in the circuit between the battery clusters can be prevented.
Step 104: and acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system.
In this embodiment, the pre-charged normal battery cluster in the energy storage system may be determined through the following sub-steps:
step 104 (1): and acquiring the pre-charging current value of each normal battery cluster for pre-charging.
It is understood that the pre-charge current value of each normal battery cluster can be obtained by using the aforementioned current detection circuit of the battery management system.
Step 104 (2): and if the pre-charging current value is smaller than the preset current value, determining that the corresponding normal battery cluster is the pre-charging normal battery cluster.
In the present embodiment, the preset current value is a theoretical value, a standard value, or an empirical value based on each battery cluster during the precharge period.
It is understood that, in the pre-charge stage, the battery is generally charged with a small current, and when a pre-charge current value of the battery cluster is detected during the pre-charge, it can be considered that there is an abnormality in the battery cluster during the pre-charge.
In this embodiment, the step of determining the abnormal pre-charge battery cluster in the energy storage system may further include:
and (3): and if the pre-charging current value is greater than or equal to the preset current value, determining that the corresponding normal battery cluster is a pre-charging abnormal battery cluster.
For determining the precharge abnormal battery cluster, it may be further processed as follows:
and (4): and maintaining the abnormal pre-charged battery cluster.
It is understood that, for the precharge abnormal battery cluster, maintenance processing may be performed by repairing and replacing a device, etc., so that it may be precharged normally, thereby precharging the normal battery cluster by a desired number of clusters. Certainly, for the abnormal pre-charged battery cluster which is higher than the operation requirement of the energy storage system, namely when the normal pre-charged battery cluster can meet the operation requirement of the energy storage system, the abnormal pre-charged battery cluster is not subjected to high-voltage power-on or maintenance treatment.
It is to be understood that the normal battery cluster is not necessarily equivalent to the pre-charged normal battery cluster, i.e., the normal battery cluster can be confirmed as the pre-charged normal battery cluster only when the normal battery cluster performs as expected during the pre-charging.
Step 105: and if the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number, adjusting the power-on state of the energy storage system to a normal power-on state.
In this embodiment, the normal power-on state may be a state in which the energy storage system is powered on based on a voltage value determined based on a rated working voltage and power of the entire energy storage system.
It is understood that the second predetermined cluster number may be the same as or different from the first predetermined cluster number. When the first preset cluster number is the same as the second preset cluster number, the first preset cluster number and the second preset cluster number can reflect the number requirement of the battery clusters which can enable the energy storage system to normally operate and meet the expectation. When the first preset cluster number is different from the second preset cluster number, the first preset cluster number can be understood as a setting condition of preliminary judgment so as to directly end the subsequent flow if the preliminary judgment result is negative, and the value of the second preset cluster number at the moment can reflect the number requirement which can enable the battery clusters which are normally operated by the energy storage system to meet the expectation.
It can be understood that, since the pre-charged normal battery cluster is determined based on that the normal battery cluster meets certain requirements, the second preset cluster number corresponding to the pre-charged normal battery cluster should be theoretically less than or equal to the first preset cluster number corresponding to the normal battery cluster.
In this embodiment, when the energy storage system is in a low-voltage power-on state, by determining whether the maximum value of the pressure difference between the battery clusters in the energy storage system is smaller than a preset pressure difference value, and when the maximum value of the pressure difference between the battery clusters in the energy storage system is smaller than the preset pressure difference value, a further power-on process is allowed to be performed, so that the safety detection of the pressure difference is realized, and the power-on safety of the energy storage system is improved. And after the pressure difference safety detection is passed, acquiring the cluster number of the normal battery cluster in the energy storage system, and allowing a further electrifying process to be carried out when the cluster number of the normal battery cluster reaches the requirement of being more than a first preset cluster number so as to meet the operation requirement of the energy storage system. And after each normal battery cluster is pre-charged, acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system, and adjusting the power-on state of the energy storage system to a normal power-on state when the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number. Through the arrangement of the pre-charging step, the voltage of each normal battery cluster can be pulled to be equal or similar, potential safety hazards caused by overlarge circulating current among the normal battery clusters are prevented, and the power-on safety of the energy storage system is further improved. Meanwhile, when the number of the clusters of the normal battery cluster is larger than the first preset number of clusters, and the number of the clusters of the pre-charged normal battery cluster is larger than the second preset number of clusters, the energy storage system is normally powered on, and a worker can determine the first preset number of clusters and the second preset number of clusters according to the current operation requirement of the energy storage system, so that the use efficiency of the energy storage system is considered, and even if part of the battery clusters go wrong, under the condition of meeting the operation requirement of the energy storage system, other battery clusters which do not go wrong can still support the operation of the energy storage system.
It can be understood that when the number of the clusters of the normal battery cluster is less than or equal to the first preset number of clusters, the prompt message of the abnormal power-on of the energy storage system can be output.
It can be understood that when the number of clusters of the pre-charged normal battery cluster is less than or equal to the second preset number of clusters, the prompt message of the power-on abnormality of the energy storage system can also be output.
Fig. 2 is a flowchart of a power-on control method according to a second embodiment of the present invention, and the main difference between the present embodiment and the first embodiment is that the second embodiment includes steps of acquiring a voltage value of a normal battery cluster in the energy storage system, and the like. It should be noted that, within the scope of the spirit or the basic features of the present invention, each embodiment applicable to the first embodiment can also be correspondingly applicable to the second embodiment, and for the sake of brevity and avoiding repetition, the detailed description thereof is omitted here.
As shown in fig. 2, the power-on control method may include the following steps:
step 201: and when the energy storage system is in a low-voltage power-on state, judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value.
Step 202: and if the judgment result is yes, acquiring the cluster number of the normal battery cluster in the energy storage system.
Step 203: and if the number of the clusters of the normal battery clusters is greater than a first preset number of clusters, acquiring the voltage value of each normal battery cluster.
It is understood that the voltage value of each of the normal battery clusters may be obtained using the aforementioned voltage detection circuit of the battery management system.
Step 204: and pre-charging each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
In this embodiment, the pre-charging each normal battery cluster in a descending order is: the normal battery cluster with high voltage value is pre-charged, and then the normal battery cluster with low voltage value is pre-charged.
It can be understood that, through the design of performing pre-charging in a descending order, the pressure difference between each normal battery cluster can be gradually reduced, which is beneficial to preventing the problem of overlarge circulating current between each normal battery cluster.
Step 205: and acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system.
Step 206: and if the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number, adjusting the power-on state of the energy storage system to a normal power-on state.
The embodiment can be based on the first embodiment, and when the number of the clusters of the normal battery clusters is greater than the first preset number of the clusters, the voltage values of the normal battery clusters are obtained, and the normal battery clusters are pre-charged in a descending order according to the voltage values of the normal battery clusters, so that the problem of overlarge circulation among the normal battery clusters is prevented, and the safety of the energy storage system is further improved.
Fig. 3 is a flowchart of a power-on control method according to a third embodiment of the present invention, and the main difference between the present embodiment and the first and second embodiments is that the third embodiment includes steps of determining whether the energy storage system meets the insulation requirement. It should be noted that, within the scope of the spirit or the basic features of the present invention, each specific solution applied to the first embodiment and the second embodiment may also be correspondingly applied to the third embodiment, and for the sake of brevity and avoidance of repetition, the detailed description is omitted here.
As shown in fig. 3, the power-on control method may include the following steps:
step 301: and when the energy storage system is in a low-voltage power-on state, judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value.
Step 302: and if the judgment result is yes, acquiring the cluster number of the normal battery cluster in the energy storage system.
Step 303: and if the number of the clusters of the normal battery clusters is greater than a first preset number of clusters, pre-charging each normal battery cluster.
Step 304: and acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system.
Step 305: and if the number of the clusters of the pre-charged normal battery cluster is greater than a second preset number of clusters, judging whether the energy storage system meets the insulation requirement.
In the embodiment, whether the energy storage system meets the insulation requirement or not can be judged by using the insulation detection circuit, the energy storage system can be monitored by using the insulation monitor, and in the monitoring process, if the energy storage system is detected not to meet the insulation requirement currently, the monitoring result that the energy storage system does not meet the insulation requirement is output.
Step 306: and if so, adjusting the power-on state of the energy storage system to a normal power-on state.
This embodiment can be on the basis of first embodiment, second embodiment when the cluster number of precharging normal battery cluster is greater than the second and predetermines the cluster number, through judging whether energy storage system satisfies the insulation requirement, and just when energy storage system satisfies the insulation requirement, adjust energy storage system's power-on state to normally power-on state to reduce because of energy storage system does not satisfy the possibility that the insulation requirement brought the potential safety hazard, further promote energy storage system power-on's security.
It can be understood that, corresponding to the above power-up control method, the energy storage system can be implemented by the following process when powering down:
firstly, when the energy storage system is in a normal operation state and receives a power-off command, whether an abnormal battery cluster exists in the energy storage system is judged.
Secondly, determining the cluster number of normal battery clusters in the energy storage system according to the number of abnormal battery clusters.
And when the number of the clusters of the normal battery cluster is larger than the third preset cluster number, sending a power-off request by using the abnormal battery cluster, and sequentially disconnecting the relays of the battery clusters in a descending manner according to the voltage value of each battery cluster after delaying the preset time. And when the number of the normal battery clusters is less than or equal to the third preset number of clusters, each battery cluster (running battery cluster) sends a power-off request, and after the preset time is delayed, the relays of the battery clusters are sequentially disconnected in a descending mode according to the voltage value of each battery cluster.
FIG. 4 is an exemplary functional block diagram of a power-on control device in accordance with an embodiment of the present invention. As shown in fig. 4, when the energy storage system is in a low-voltage power-on state, the power-on control device 100 may allow a further power-on process to be performed by determining whether a maximum value of a pressure difference between each battery cluster in the energy storage system is smaller than a preset pressure difference value, and when the maximum value of the pressure difference between each battery cluster in the energy storage system is smaller than the preset pressure difference value, so as to implement safety detection of the pressure difference and improve power-on safety of the energy storage system. And after the pressure difference safety detection is passed, acquiring the cluster number of the normal battery cluster in the energy storage system, and allowing a further electrifying process to be carried out when the cluster number of the normal battery cluster reaches the requirement of being more than a first preset cluster number so as to meet the operation requirement of the energy storage system. And after each normal battery cluster is pre-charged, acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system, and adjusting the power-on state of the energy storage system to a normal power-on state when the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number. Through the arrangement of the pre-charging step, the voltage of each normal battery cluster can be pulled to be equal or similar, potential safety hazards caused by overlarge circulating current among the normal battery clusters are prevented, and the power-on safety of the energy storage system is further improved. Meanwhile, when the number of the clusters of the normal battery cluster is larger than the first preset number of clusters, and the number of the clusters of the pre-charged normal battery cluster is larger than the second preset number of clusters, the energy storage system is normally powered on, and a worker can determine the first preset number of clusters and the second preset number of clusters according to the current operation requirement of the energy storage system, so that the use efficiency of the energy storage system is considered, and even if part of the battery clusters go wrong, under the condition of meeting the operation requirement of the energy storage system, other battery clusters which do not go wrong can still support the operation of the energy storage system.
The power-on control apparatus 100 of the present invention may include one or more modules that may be stored in a memory of a computer apparatus and may be configured to be executed by one or more processors (one processor in this embodiment) to accomplish the present invention. For example, as shown in fig. 4, the power-on control apparatus 100 may include a determining module 11, an obtaining module 12, a pre-charging module 13, an adjusting module 14, and a determining module 15. The modules referred to in this application may be program segments that perform particular functions, or may be more specialized than programs that describe the execution of software on a processor.
It should be noted that, corresponding to the above embodiments of the power-on control method, the power-on control apparatus 100 may include some or all of the functional modules shown in fig. 4, and the functions of the modules will be described in detail below. The same noun and its specific explanation in the above embodiments of the power-on control method may also be applied to the following functional description of each module. For brevity and to avoid repetition, further description is omitted.
Fig. 5 is an exemplary structural schematic diagram of a power-on control system according to an embodiment of the present invention. The power-on control system 2 may include an electrical parameter detection device 21, an insulation detection device 22, and the above power-on control device 100, wherein the electrical parameter detection device 21 may be configured to obtain a voltage, a current value, or even a resistance value of each battery cluster. The insulation detection device 22 may be used to detect an insulation condition of the energy storage system.
Fig. 6 is an exemplary structural diagram of a computer device according to an embodiment of the present invention. The present embodiment provides a computer apparatus 1 including: a processor 10, a memory 20, a detection device 30 and a computer program, such as a power-on control program, stored in said memory 20 and executable on said processor 10. When the processor 10 executes the computer program, the steps in the above-mentioned various embodiments of the power-on control method, such as steps 101 to 105 shown in fig. 1, are implemented. Alternatively, the processor 10 implements the functions of the modules in the above device embodiments when executing the computer program, for example, as the determining module 11 in fig. 4 implements the function of determining whether the maximum value of the voltage difference between the battery clusters in the energy storage system is smaller than the preset voltage difference value when the energy storage system is in the low-voltage power-on state.
The computer device 1 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The computer device 1 may include, but is not limited to, a processor 10, a memory 20, and a detection device 30. It will be understood by those skilled in the art that the schematic diagram is merely an example of the computer apparatus 1 for implementing the power-on control method of the present invention, and does not constitute a limitation to the computer apparatus 1, and may include more or less components than those shown in the drawings, or combine some components, or different components, for example, the computer apparatus 1 may further include an input and output device, a network access device, a bus, etc.
The Processor 10 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 10 is the control center of the computer device 1 and connects the various parts of the whole computer device 1 by various interfaces and lines.
The memory 20 can be used for storing the computer programs and/or modules, and the processor 10 can implement various functions of the computer device 1 by running or executing the computer programs and/or modules stored in the memory 20 and calling the data stored in the memory 20. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 20 may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The detection device 30 is used to detect the voltage value, the current, the insulation condition of the energy storage system, and the like of each battery cluster.
The computer apparatus 1 may further include a power-on control apparatus 100 as shown in fig. 4, and the power-on control apparatus 100 may be stored in the memory 20.
Illustratively, the computer program may be partitioned into one or more modules that are stored in the memory 20 and executed by the processor 10 to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program in the computer device 1. For example, the computer program may be divided into the power-on control apparatus 100 shown in fig. 4, which includes a determining module 11, an obtaining module 12, a pre-charging module 13, an adjusting module 14, and a determining module 15, and the specific functions of each module are as follows:
the judging module 11 is configured to judge whether a maximum value of a pressure difference between each battery cluster in the energy storage system is smaller than a preset pressure difference value when the energy storage system is in a low-voltage power-on state.
The obtaining module 12 is configured to obtain the number of clusters of a normal battery cluster in the energy storage system when the maximum value of the voltage difference between the battery clusters in the energy storage system is smaller than a preset voltage difference value; and acquiring the cluster number of the pre-charged normal battery cluster in the energy storage system.
The pre-charging module 13 is configured to pre-charge the normal battery cluster in the energy storage system when the cluster number of the normal battery cluster in the energy storage system is greater than a first preset cluster number.
The adjusting module 14 may be configured to adjust the power-on state of the energy storage system to a normal power-on state when the number of clusters of the precharged normal battery cluster is greater than a second preset number of clusters.
Further, the obtaining module 12 may also be configured to obtain a voltage value of a normal battery cluster in the energy storage system. Correspondingly, the pre-charging module 13 may be further configured to pre-charge each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
Further, the determining module 11 is specifically configured to determine whether the energy storage system meets the insulation requirement when the number of clusters of the pre-charged normal battery cluster is greater than the second preset number of clusters. Correspondingly, the adjusting module can be used for adjusting the power-on state of the energy storage system to a normal power-on state when the energy storage system meets the insulation requirement.
Further, the obtaining module 12 may be further configured to obtain a pre-charge current value for pre-charging each normal battery cluster.
The determining module 15 may be configured to determine that the corresponding normal battery cluster is a pre-charged normal battery cluster when the pre-charging current value is smaller than the preset current value.
Further, the determining module 15 may be further configured to determine that the corresponding normal battery cluster is a pre-charged abnormal battery cluster when the pre-charge current value is greater than or equal to the preset current value.
The pre-charging module is also used for pre-charging the pre-charging abnormal battery cluster. The modules integrated in the computer device 1 according to the present invention may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on such understanding, all or part of the flow in the power-on control method according to the above embodiments may also be implemented by instructing relevant hardware through a computer program, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps in the power-on control method according to the above embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units, modules or means recited in the system, device or computer device claims may also be implemented by the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not to denote any particular order.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. A power-on control method is applied to a large-scale multi-battery-cluster energy storage system and is characterized by comprising the following steps:
when the energy storage system is in a low-voltage power-on state, judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value or not;
if the judgment result is yes, acquiring the cluster number of the normal battery cluster in the energy storage system;
if the number of the normal battery clusters is larger than a first preset number of clusters, pre-charging each normal battery cluster;
acquiring the number of clusters of a pre-charged normal battery cluster in the energy storage system;
and if the cluster number of the pre-charged normal battery cluster is greater than a second preset cluster number, adjusting the power-on state of the energy storage system to a normal power-on state.
2. The power-on control method according to claim 1, wherein said precharging each of the normal battery clusters includes:
acquiring a voltage value of each normal battery cluster;
and pre-charging each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
3. The power-on control method according to claim 1, wherein the adjusting the power-on state of the energy storage system to a normal power-on state comprises:
if the number of the clusters of the pre-charged normal battery cluster is larger than the second preset number of clusters, judging whether the energy storage system meets the insulation requirement;
and if so, adjusting the power-on state of the energy storage system to a normal power-on state.
4. The power-on control method according to any one of claims 1 to 3, wherein between the pre-charging each of the normal battery clusters and acquiring the cluster number of the pre-charged normal battery clusters in the energy storage system, the method further comprises:
acquiring a pre-charging current value for pre-charging each normal battery cluster;
and if the pre-charging current value is smaller than a preset current value, determining that the corresponding normal battery cluster is a pre-charging normal battery cluster.
5. The power-on control method according to claim 4, wherein after said obtaining a precharge current value at which each of the normal battery clusters is precharged, the method further comprises:
if the pre-charging current value is greater than or equal to the preset current value, determining that the corresponding normal battery cluster is a pre-charging abnormal battery cluster;
and maintaining the abnormal pre-charged battery cluster.
6. A power-on control device is applied to a large-scale multi-battery-cluster energy storage system, and is characterized by comprising:
the judging module is used for judging whether the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value or not when the energy storage system is in a low-voltage power-on state;
the acquiring module is used for acquiring the number of clusters of normal battery clusters in the energy storage system when the maximum value of the pressure difference among the battery clusters in the energy storage system is smaller than a preset pressure difference value; acquiring the number of clusters of a pre-charged normal battery cluster in the energy storage system;
the pre-charging module is used for pre-charging the normal battery clusters in the energy storage system when the cluster number of the normal battery clusters is greater than a first preset cluster number;
and the adjusting module is used for adjusting the power-on state of the energy storage system to a normal power-on state when the number of clusters of the pre-charged normal battery cluster in the energy storage system is larger than a second preset cluster number.
7. The power-on control device according to claim 6, wherein the obtaining module is further configured to obtain a voltage value of each of the normal battery clusters;
the pre-charging module is further used for pre-charging each normal battery cluster in a descending order according to the voltage value of each normal battery cluster.
8. A power-on control system characterized by comprising the power-on control device according to any one of claims 6 or 7.
9. A computer arrangement, characterized in that the computer arrangement comprises a processor for implementing the steps of the power-on control method according to any one of claims 1-5 when executing a computer program stored in a memory.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the power-on control method according to any one of claims 1 to 5.
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| CN111276989B (en) * | 2020-02-26 | 2023-08-08 | 深圳市科陆电子科技股份有限公司 | Energy storage control protection method and system |
| CN111613846B (en) * | 2020-07-10 | 2021-11-30 | 深圳传音控股股份有限公司 | Battery charging method, handheld terminal and readable storage medium |
| CN113193633B (en) * | 2021-06-04 | 2023-09-08 | 傲普(上海)新能源有限公司 | Battery cluster access method, device, energy storage power station, equipment and storage medium |
| CN113696735B (en) * | 2021-08-06 | 2023-10-27 | 上汽通用五菱汽车股份有限公司 | Power-up method of battery system, battery system and readable storage medium |
| CN113745673A (en) * | 2021-08-18 | 2021-12-03 | 东莞新能安科技有限公司 | Battery cluster electrifying method and system, battery management system and battery cluster |
| CN115085326B (en) * | 2022-07-08 | 2024-06-11 | 湖北亿纬动力有限公司 | Control method and device of energy storage system and energy storage system |
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