CN115566777A - Battery system and energy storage system - Google Patents
Battery system and energy storage system Download PDFInfo
- Publication number
- CN115566777A CN115566777A CN202211437361.3A CN202211437361A CN115566777A CN 115566777 A CN115566777 A CN 115566777A CN 202211437361 A CN202211437361 A CN 202211437361A CN 115566777 A CN115566777 A CN 115566777A
- Authority
- CN
- China
- Prior art keywords
- battery
- controller
- battery packs
- packs
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
-
- 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
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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 invention provides a battery system and an energy storage system, and relates to the technical field of battery energy storage, wherein the battery system comprises a plurality of battery packs, a power loop switch matrix, a primary controller, a secondary controller and a main controller; each battery pack is provided with a primary controller, and each battery pack is connected to the power circuit switch matrix; the secondary controller and the power loop switch matrix are communicated with the main controller, and the secondary controller is also communicated with a preset number of primary controllers distributed by the main controller; according to the battery system and the energy storage system provided by the invention, the battery packs with close performance parameters can be distributed into one battery cluster, so that the battery packs in the battery cluster can be effectively balanced, excessive energy loss can be avoided, and the service life of the battery packs can be prolonged.
Description
Technical Field
The invention relates to the technical field of battery energy storage, in particular to a battery system and an energy storage system.
Background
In an energy storage system, a battery array is typically connected as a plurality of parallel battery clusters, each battery cluster including a plurality of series-connected individual battery packs; in a conventional energy storage scheme, the battery pack cannot be changed once connected. Meanwhile, during the stopping period of each battery pack in the battery cluster, self-discharge of different degrees is brought due to the characteristic difference of each battery pack, and after the battery packs are started, a plurality of internal battery packs in the battery cluster need to be balanced. In addition, when a new battery pack is replaced after a battery pack failure, the capacity of the battery pack differs from that of other battery packs in the cluster, and balancing is also required.
In the traditional energy storage scheme, because the connection of the battery packs is fixed, the battery packs in the battery clusters can be balanced only in the same battery cluster no matter how large the capacity difference of the battery packs in the battery clusters is. Resulting in more inefficient energy consumption, more heat generation, and lengthy validation time.
Disclosure of Invention
Accordingly, the present invention is directed to a battery system and an energy storage system to alleviate the above technical problems.
In a first aspect, an embodiment of the present invention provides a battery system, including a plurality of battery packs, a power circuit switch matrix, a primary controller, a secondary controller, and a main controller; each battery pack is provided with one primary controller, and each battery pack is connected to the power circuit switch matrix; the secondary controller and the power loop switch matrix are communicated with the main controller, and the secondary controller is also communicated with a preset number of the primary controllers distributed by the main controller; the primary controller is used for sending the packet level information of the corresponding battery pack to the secondary controller before the battery system is started; wherein the packet level information includes performance parameters of the battery packet and label information of the battery packet; the secondary controller is used for collecting the packet level information and sending the packet level information to the main controller; the main controller is used for extracting performance parameters of the battery packs, sorting the battery packs according to a preset sorting rule based on the performance parameters, and generating a distribution mode of the battery packs based on a sorting result; and controlling the power circuit switch matrix to be connected with the power circuit of the battery pack according to the distribution mode so as to distribute the battery pack.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the performance parameter of the battery pack includes a voltage parameter or a capacity parameter; the preset sorting rule comprises the following steps: the magnitude sorting rule of the capacity parameter or the magnitude sorting rule of the voltage parameter; the step of the main controller sorting the battery packs according to a preset sorting rule based on the performance parameters comprises the following steps: sequencing the battery packs according to the size sequencing rule of the capacity parameters to generate a sequencing result; or sequencing the battery packs according to the size sequencing rule of the voltage parameters to generate a sequencing result.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the step of generating an allocation manner of the battery pack based on the sorting result includes: generating a distribution mode of the battery packs according to the sequencing result based on the number of the secondary controllers; wherein, the distribution mode comprises: dividing the battery packs into M battery clusters, wherein each battery cluster comprises N battery packs; the number of the secondary controllers is M, and M and N are natural numbers; the step of controlling the power circuit switch matrix to connect the power lines of the battery packs according to the distribution mode comprises the following steps: and controlling the power circuit switch matrix to connect the power lines of the battery packs in the distribution mode so as to enable each of the N battery packs in the battery clusters to be connected in series, and M battery clusters to be connected in parallel.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the packet level information further includes: a physical address of the battery pack; the main controller is further configured to adjust the sorting result based on the physical addresses, so that the battery packs with a distance between the physical addresses smaller than a preset distance threshold are distributed in one battery cluster.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the battery pack includes a single battery, and an equalizing circuit configured to the single battery; the equalization circuit is used for carrying out equalization processing on the single batteries after the battery system is started.
With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the power circuit switch matrix includes a plurality of switch branches; the output of switch branch road with the battery package is connected, the control end of switch branch road with main control unit connects, so that under main control unit's control, will the power line of battery package selects to be connected.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the battery system is further provided with a primary communication bus; the primary communication bus is used for connecting the secondary controller and the communication port of the primary controller.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the battery system is further provided with a secondary communication bus; the secondary communication bus is used for connecting the communication ports of the main controller and the secondary controller.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, wherein the main controller is disposed in the power circuit switch matrix and communicates with the primary communication bus; the master controller is used for collecting the packet-level information through the primary communication bus.
In a second aspect, an embodiment of the present invention further provides an energy storage system, where the energy storage system includes the battery system according to the first aspect.
The embodiment of the invention has the following beneficial effects:
according to the battery system and the energy storage system provided by the embodiment of the invention, before the battery system is started, the primary controller sends the packet level information of the corresponding battery pack to the secondary controller, and then the secondary controller sends the packet level information to the main controller, so that the main controller can extract the performance parameters of the battery pack, the battery packs are sorted according to the preset sorting rule by the performance parameters, and the distribution mode of the battery packs is generated based on the sorting result; and controlling the power circuit switch matrix to connect the power circuits of the battery packs according to the distribution mode so as to distribute the battery packs, and because the distribution process of the battery packs is carried out according to the performance parameters, the battery packs with the performance parameters close to each other can be distributed to one battery cluster, so that the battery packs in the battery clusters can be effectively balanced, excessive energy loss can be avoided, and the service life of the battery packs is prolonged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a battery system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another battery system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third battery system according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a working process of a battery pack in an energy storage system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In a traditional energy storage system, battery packs are connected in a manner that the battery packs are connected into a plurality of parallel battery clusters, and each battery cluster comprises a plurality of battery packs connected in series; and once the battery packs are connected, the battery packs cannot be changed, and the connection of the battery packs is fixed, so that the battery packs in the battery clusters can only be balanced in the same battery cluster no matter how large the capacity difference of the battery packs in the battery clusters is, and the problems of more ineffective energy consumption, more heat generation, long effective time and the like are caused.
Based on this, the battery system and the energy storage system provided by the embodiment of the invention can effectively alleviate the technical problems.
For the convenience of understanding the present embodiment, a detailed description will be given of a battery system disclosed in the present embodiment.
In one possible implementation, an embodiment of the present invention provides a battery system, such as a schematic structural diagram of a battery system shown in fig. 1, where the battery system includes a plurality of battery packs 10, a power circuit switch matrix 20, a primary controller 30, a secondary controller 40, and a main controller 50.
Each battery pack 10 is provided with a primary controller 30, and each battery pack 10 is connected to the power circuit switch matrix 20; the secondary controller 40 and the power circuit switch matrix 20 communicate with the primary controller 50, and the secondary controller 40 also communicates with a preset number of primary controllers 30 assigned by the primary controller 50.
The primary controller 30 is configured to send packet-level information of the corresponding battery pack 10 to the secondary controller 40 before the battery system is started; the packet level information comprises performance parameters of the battery packet and label information of the battery packet;
the secondary controller 40 is used for collecting packet-level information and sending the packet-level information to the main controller 50;
the main controller 50 is used for extracting performance parameters of the battery packs, sorting the battery packs according to a preset sorting rule based on the performance parameters, and generating a distribution mode of the battery packs based on a sorting result; and controlling the power circuit switch matrix 20 to connect the power lines of the battery packs in a distribution manner so as to distribute the battery packs.
In actual use, the number of the battery packs can be set according to actual application scenes and use conditions, each battery pack has unique identification information or an ID number so as to distinguish each battery pack, the identification information of each battery pack can be stored in a primary controller configured for the battery pack, and the identification information of each battery pack can be sent to a secondary controller and a main controller by the primary controller so as to distinguish and manage each battery pack in the whole battery system.
And before the battery system is started, all the battery packs are sorted according to a preset sorting rule and are distributed in the order, so that the energy difference of the battery packs in the formed battery cluster is minimum, and effective balance is realized.
Therefore, the battery system provided by the embodiment of the invention can send the packet level information of the corresponding battery pack to the secondary controller through the primary controller before the battery system is started, and then send the packet level information to the main controller through the secondary controller, so that the main controller can extract the performance parameters of the battery pack, sort the battery pack according to the preset sorting rule by the performance parameters, and generate the distribution mode of the battery pack based on the sorting result; and controlling the power circuit switch matrix to connect the power circuits of the battery packs according to the distribution mode so as to distribute the battery packs, and because the distribution process of the battery packs is carried out according to the performance parameters, the battery packs with the performance parameters close to each other can be distributed to one battery cluster, so that the battery packs in the battery clusters can be effectively balanced, excessive energy loss can be avoided, and the service life of the battery packs is prolonged.
In actual use, the performance parameters of the battery pack comprise voltage parameters or capacity parameters; the primary controller configured for the battery pack is used for monitoring the voltage parameters or the capacity parameters of the battery pack, generating the performance parameters to the secondary controller before the battery system is started, and sending the performance parameters to the main controller through the secondary controller, so that the main controller sequences the battery packs according to the performance parameters.
Further, based on the performance parameter, the preset ordering rule includes: the magnitude ordering rule of the capacity parameter, or the magnitude ordering rule of the voltage parameter.
When the main controller sorts the battery packs according to a preset sorting rule based on the performance parameters, the main controller can sort the battery packs according to the size sorting rule of the capacity parameters to generate a sorting result; or sorting the battery packs according to the size sorting rule of the voltage parameters to generate a sorting result. For example, all battery packs may be sorted from large to small according to the capacity parameter, or from small to large, or from large to small according to the voltage parameter, or from small to large.
Further, after sorting according to the sorting rule, the distribution mode of the battery packs may be generated based on the sorting result. Specifically, when the battery packs are allocated, the allocation mode of the battery packs can be generated according to the sorting result based on the number of the secondary controllers;
wherein, this distribution mode includes: dividing the battery packs into M battery clusters according to the number of currently available secondary controllers, wherein each battery cluster comprises N battery packs; wherein the number of the secondary controllers is M, that is, the number of the available secondary controllers is M, and M and N are natural numbers.
Based on the distribution mode, when the power circuit switch matrix is controlled to be connected with the power lines of the battery packs in the distribution mode, the power circuit switch matrix can be controlled to be connected with the power lines of the battery packs in the distribution mode, so that the N battery packs in each battery cluster are connected in series, and the M battery clusters are connected in parallel.
In practical use, the power circuit switch matrix comprises a plurality of switch branches; the output of every switch branch road all is connected with the battery package, and the control end of switch branch road is connected with main control unit to in under main control unit's control, carry out the selective connection with the power line of battery package, thereby form every battery and organize a packet that has a battery of N series connection, totally M battery group's battery array.
Each battery pack further comprises a single battery and an equalization circuit configured for the single battery, wherein the equalization circuit is used for performing equalization processing on the single battery after the battery system is started.
For convenience of understanding, fig. 2 shows a schematic structural diagram of another battery system on the basis of fig. 1, and in addition to the respective structures shown in fig. 1, fig. 2 further includes an equalizing circuit 101 configured for each battery pack 10. In a specific implementation, the balancing circuit may be a resistor connected in parallel outside the battery pack through a switch, so as to balance the single batteries of the battery pack.
Further, as shown in fig. 2, the battery system according to the embodiment of the present invention is further provided with a primary communication bus 200, where the primary communication bus is used to connect the secondary controller and the communication port of the primary controller. In practical use, the primary controller is configured for each battery pack, and therefore, the primary controller may also be referred to as a packet-level controller, and the secondary controller corresponds to a controller for each battery cluster, and therefore, the secondary controller may also be referred to as a cluster-level controller, and the primary communication bus 200 is a communication port for connecting all cluster-level controllers and packet-level controllers, so as to implement communication between the cluster-level controllers and the packet-level controllers. Meanwhile, the M cluster-level controllers can transmit data to the packet-level controllers of the N battery packets through the primary communication bus according to the N battery packets distributed by the main controller, so that monitoring in each battery cluster is realized.
Further, as shown in fig. 2, the battery system of the embodiment of the present invention is further provided with a secondary communication bus 201; the secondary communication bus is used for connecting the communication ports of the main controller and the secondary controller.
In specific implementation, the main controller is also called a stack-level controller, and the stack-level controller and all cluster-level controllers (secondary controllers) perform data transmission through the secondary communication bus 201 to monitor the whole battery system.
Based on the battery system shown in fig. 2, the working process of the battery system in the embodiment of the present invention is as follows:
(1) Before a battery system is started, a packet level controller (a first level controller) sends a current voltage parameter (or a capacity parameter) of a corresponding battery packet and identification information of the battery packet to a cluster level controller (a cluster level controller) through a first level communication bus, any cluster level controller can be used, and then the cluster level controller sends the current voltage parameter (or the capacity parameter) and the identification information of the battery packet to a stack level controller (a main controller) through a second level communication bus;
(2) The stack level controller divides all the battery packs into M battery clusters according to the current voltage parameters (or capacity parameters) of all the battery packs from large to small or from small to large, wherein each battery cluster is provided with N battery packs, and controls a power circuit switch matrix to be connected with a power circuit of the battery packs according to the distribution mode, so that the N battery packs in each battery cluster are connected in series, and the M battery clusters are connected in parallel;
(3) The stack level controller respectively sends the identification information of the distributed battery packs to the M cluster level controllers;
(4) The cluster level controller of each battery cluster sets an intra-cluster communication rule according to the identification information of the allocated battery pack so as to realize communication with the packet level controller of the battery pack in the cluster under subsequent normal work;
(5) And the battery system enters normal operation, and the equalizing circuit of each battery pack performs equalizing action according to the instruction of the corresponding cluster level controller.
Further, the packet-level information may further include a physical address of the battery packet, and the packet-level controller further sends the physical address information of each battery packet to the cluster-level controller and further to the stack-level controller, that is, the main controller; the main controller is further used for adjusting the sorting result based on the physical addresses, so that the battery packs with the distance between the physical addresses smaller than a preset distance threshold value are distributed in one battery cluster.
Specifically, if the current voltage parameters (or capacity parameters) of a plurality of battery packs are the same, the stack-level controller can further perform battery pack allocation by combining the information of the physical addresses of the battery packs in the original allocation mode, and divide the battery packs with the physical addresses closer into a cluster, so that the distance of power lines among the battery packs in the battery cluster can be reduced, and the line loss is reduced.
For the sake of understanding, a battery system including 9 battery packs is taken as an example for explanation, and 3 battery packs are set as a cluster, and voltages of the battery packs are assumed to be 15V, 10V, 9V, 8V, 7V, 6V, 5V, and 4V, respectively. When the main controller sorts the battery packs based on the performance parameters, the main controller may obtain a sorting result of the voltage sequence according to a sorting rule that the voltage parameters are from large to small, and based on the sorting result, the battery packs are distributed in the following manner: the voltage parameters of the battery pack of the first battery cluster are (15V, 10V and 9V); the voltage parameters of the battery pack of the second battery cluster are (9V, 8V and 7V); the voltage parameters of the battery pack of the third battery cluster are (6V, 5V, 4V).
Further, since two identical 9V battery packs appear, the stack level controller further considers the physical addresses of the two battery packs, which are closer to the physical addresses of other battery packs in the first cluster, and which are closer to the physical addresses of other battery packs in the second cluster, and adjusts the sorting result so as to divide the battery packs with closer physical addresses into one battery cluster.
Further, the main controller in the embodiment of the present invention may be disposed in the power circuit switch matrix, and communicate with the primary communication bus; at this time, the host controller may collect the packet-level information through the primary communication bus.
At this time, in the entire battery system, the MCU may be provided in the power circuit switch matrix without separately providing a main controller, and may be connected to the primary communication bus.
For the convenience of understanding, fig. 3 also shows a schematic structural diagram of a third battery system, in this embodiment, since the main controller is disposed in the power circuit switch matrix, the use of one set of communication buses can be reduced, and thus the cost can be reduced.
Based on the battery system shown in fig. 3, when the battery system is started, each cluster level controller (secondary controller) receives information such as current voltage parameters or capacity parameters of all battery packs through the primary communication bus 200, and each cluster level controller sequentially selects the battery packs in its own battery pack from large to small (or from small to large) according to a preset sequence and the number N of the battery packs in a single battery pack according to the voltage parameters or the capacity parameters to perform subsequent communication. For example, the cluster level controller numbered 1 is set to select the N battery packs with the highest voltage, and the cluster level controller numbered 2 is set to select the N battery packs with the second highest voltage, sequentially to the end. Meanwhile, when the battery system is started, the MCU can also receive information such as current voltage parameters or capacity parameters of all the battery packs through the primary communication bus, control switches in a power circuit switch matrix according to the sequence of the voltage parameters or the capacity parameters from large to small (or from small to large), and connect power circuits of the battery packs, so that N battery packs in each battery cluster are connected in series, and M battery clusters are connected in parallel.
In addition, the MCU may also adjust the sorting result in a preferred manner by combining the physical addresses of the battery packs, which may specifically refer to the foregoing embodiments and is not described herein again.
Further, after the power circuit switch matrix forms M parallel battery clusters, the battery clusters can be connected to the same PCS (DCAC/DCDC) converter through a total power line to be discharged or charged, and can also be respectively connected with one PCS converter and then connected to the total power line to be discharged or charged.
Further, the primary communication bus and the secondary communication bus in fig. 2 and fig. 3 may be replaced by a wireless communication mode to implement a communication function, and a specific bus setting mode, the number of battery packs and the setting condition of the PCS converter may be set according to an actual use condition, which is not limited in the embodiment of the present invention.
Further, on the basis of the above embodiment, an embodiment of the present invention further provides an energy storage system, which includes the above battery system.
Further, the battery system comprises a plurality of battery packs, a power circuit switch matrix, a primary controller, a secondary controller and a main controller; each battery pack is provided with one primary controller, and each battery pack is connected to the power circuit switch matrix; the secondary controller and the power loop switch matrix are communicated with the main controller, and the secondary controller is also communicated with the primary controllers distributed by the main controller in a preset number.
Specifically, fig. 4 shows a work flow diagram of a battery pack in an energy storage system, as shown in fig. 4, including the following steps:
step S402, the primary controller sends the packet level information of the corresponding battery pack to the secondary controller before the battery system is started;
wherein the packet level information comprises performance parameters of the battery packet and label information of the battery packet;
step S404, the secondary controller is used for collecting packet level information and sending the packet level information to the main controller;
step S406, the main controller is used for extracting performance parameters of the battery packs, sorting the battery packs according to a preset sorting rule based on the performance parameters, and generating a distribution mode of the battery packs based on a sorting result; and controlling the power circuit switch matrix to be connected with the power lines of the battery packs in a distribution mode so as to distribute the battery packs.
The energy storage system provided by the embodiment of the invention has the same technical characteristics as the battery system provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The computer program product of the battery system and the energy storage system provided by the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and will not be described herein again.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working process of the energy storage system described above may refer to the corresponding process in the foregoing embodiment, and details are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those skilled in the art.
The functions 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 separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the following embodiments are merely illustrative of the present invention, and not restrictive, and the scope of the present invention is not limited thereto: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A battery system is characterized by comprising a plurality of battery packs, a power loop switch matrix, a primary controller, a secondary controller and a main controller;
each battery pack is provided with one primary controller, and each battery pack is connected to the power circuit switch matrix;
the secondary controller and the power loop switch matrix are communicated with the main controller, and the secondary controller is also communicated with a preset number of primary controllers distributed by the main controller;
the primary controller is used for sending the packet level information of the corresponding battery packet to the secondary controller before the battery system is started; wherein the package level information includes performance parameters of the battery package and label information of the battery package;
the secondary controller is used for collecting the packet level information and sending the packet level information to the main controller;
the main controller is used for extracting performance parameters of the battery packs, sorting the battery packs according to a preset sorting rule based on the performance parameters, and generating a distribution mode of the battery packs based on a sorting result; and the number of the first and second groups,
and controlling the power circuit switch matrix to be connected with the power line of the battery pack according to the distribution mode so as to distribute the battery pack.
2. The battery system of claim 1, wherein the performance parameter of the battery pack comprises a voltage parameter or a capacity parameter;
the preset sorting rule comprises the following steps: the magnitude sorting rule of the capacity parameter or the magnitude sorting rule of the voltage parameter;
the step of the main controller sorting the battery packs according to a preset sorting rule based on the performance parameters comprises the following steps:
sequencing the battery packs according to the size sequencing rule of the capacity parameters to generate a sequencing result; alternatively, the first and second liquid crystal display panels may be,
and sequencing the battery packs according to the size sequencing rule of the voltage parameters to generate a sequencing result.
3. The battery system according to claim 2, wherein the step of generating the allocation manner of the battery packs based on the sorting result comprises:
generating a distribution mode of the battery packs according to the sequencing result based on the number of the secondary controllers;
wherein, the distribution mode comprises: dividing the battery packs into M battery clusters, wherein each battery cluster comprises N battery packs; the number of the secondary controllers is M, and M and N are natural numbers;
the step of controlling the power circuit switch matrix to connect the power lines of the battery packs in the distribution mode comprises the following steps:
and controlling the power circuit switch matrix to connect the power lines of the battery packs in the distribution mode so as to enable N battery packs in each battery cluster to be connected in series, and M battery clusters to be connected in parallel.
4. The battery system of claim 3, wherein the packet-level information further comprises: a physical address of the battery pack;
the main controller is further configured to adjust the sorting result based on the physical addresses, so that the battery packs with a distance between the physical addresses smaller than a preset distance threshold are distributed in one battery cluster.
5. The battery system of claim 1, wherein the battery pack includes a cell, and an equalization circuit of the cell configuration;
the equalization circuit is used for carrying out equalization processing on the single batteries after the battery system is started.
6. The battery system of claim 1, wherein the power circuit switch matrix comprises a plurality of switch legs;
the output of switch branch road with the battery package is connected, the control end of switch branch road with main control unit connects, so that under main control unit's control, will the power line of battery package selects to be connected.
7. The battery system of claim 1, wherein the battery system is further provided with a primary communication bus;
the primary communication bus is used for connecting the secondary controller and the communication port of the primary controller.
8. The battery system of claim 7, wherein the battery system is further provided with a secondary communication bus;
the secondary communication bus is used for connecting the communication ports of the main controller and the secondary controller.
9. The battery system of claim 7, wherein the master controller is disposed in the power loop switch matrix and is in communication with the primary communication bus;
the master controller is used for collecting the packet-level information through the primary communication bus.
10. An energy storage system, characterized in that the energy storage system comprises the battery system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211437361.3A CN115566777B (en) | 2022-11-17 | 2022-11-17 | Battery system and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211437361.3A CN115566777B (en) | 2022-11-17 | 2022-11-17 | Battery system and energy storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115566777A true CN115566777A (en) | 2023-01-03 |
| CN115566777B CN115566777B (en) | 2023-08-18 |
Family
ID=84770720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211437361.3A Active CN115566777B (en) | 2022-11-17 | 2022-11-17 | Battery system and energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115566777B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009213299A (en) * | 2008-03-05 | 2009-09-17 | Kansai Electric Power Co Inc:The | Power storage device |
| US20100289447A1 (en) * | 2009-05-18 | 2010-11-18 | Dobson Eric L | System and method for power management of energy storage devices |
| CN103633738A (en) * | 2013-11-25 | 2014-03-12 | 南方电网科学研究院有限责任公司 | Battery monitoring information transmission method of energy storing system |
| CN106602664A (en) * | 2017-01-05 | 2017-04-26 | 清华大学深圳研究生院 | Battery pack with dynamically-adjustable connection topology and implementation method thereof |
| CN109450046A (en) * | 2018-12-24 | 2019-03-08 | 苏州华天国科电力科技有限公司 | A kind of restructural battery network energy managing and control system of substation |
| CN109586371A (en) * | 2018-12-13 | 2019-04-05 | 上海交通大学 | The series-parallel suitching type battery circuit of charge and discharge |
| CN112865154A (en) * | 2021-03-08 | 2021-05-28 | 阳光电源股份有限公司 | Energy storage system and battery cluster balance control method thereof |
| CN114397579A (en) * | 2021-12-17 | 2022-04-26 | 北京海博思创科技股份有限公司 | Battery data processing method, device, equipment, medium and program product |
-
2022
- 2022-11-17 CN CN202211437361.3A patent/CN115566777B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009213299A (en) * | 2008-03-05 | 2009-09-17 | Kansai Electric Power Co Inc:The | Power storage device |
| US20100289447A1 (en) * | 2009-05-18 | 2010-11-18 | Dobson Eric L | System and method for power management of energy storage devices |
| CN103633738A (en) * | 2013-11-25 | 2014-03-12 | 南方电网科学研究院有限责任公司 | Battery monitoring information transmission method of energy storing system |
| CN106602664A (en) * | 2017-01-05 | 2017-04-26 | 清华大学深圳研究生院 | Battery pack with dynamically-adjustable connection topology and implementation method thereof |
| CN109586371A (en) * | 2018-12-13 | 2019-04-05 | 上海交通大学 | The series-parallel suitching type battery circuit of charge and discharge |
| CN109450046A (en) * | 2018-12-24 | 2019-03-08 | 苏州华天国科电力科技有限公司 | A kind of restructural battery network energy managing and control system of substation |
| CN112865154A (en) * | 2021-03-08 | 2021-05-28 | 阳光电源股份有限公司 | Energy storage system and battery cluster balance control method thereof |
| CN114397579A (en) * | 2021-12-17 | 2022-04-26 | 北京海博思创科技股份有限公司 | Battery data processing method, device, equipment, medium and program product |
Non-Patent Citations (2)
| Title |
|---|
| 王鹿军: "基于四管双向变换器的退役电池组有源快速均衡方法", 《中国电机工程学报》 * |
| 王鹿军: "基于四管双向变换器的退役电池组有源快速均衡方法", 《中国电机工程学报》, vol. 42, no. 14, 20 July 2022 (2022-07-20), pages 5254 - 5264 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115566777B (en) | 2023-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3097626B1 (en) | Systems and methods for utilizing an array of power storage devices, such as batteries | |
| KR20120134059A (en) | Power storage apparatus, power storage system comprising the same, and method of assembling power storage system using the same | |
| CN108963353A (en) | Master-slave identification method and device for battery pack | |
| WO2020227833A1 (en) | Method and system for dual equilibrium tm battery and battery pack performance management | |
| CN101867205A (en) | Device and method for maintaining lithium ion battery pack | |
| CN103779938B (en) | Battery pack charging balanced circuit, method and discharge equalizing circuit, method | |
| CN105122581A (en) | System and method for allocating communication identifier for multi-bms | |
| CN109742471B (en) | Processing system of retired battery | |
| CN111431228A (en) | Parallel battery pack charging and discharging management method and electronic device | |
| CN102842939A (en) | Battery management system and battery management method | |
| CN105150874B (en) | Power battery management system and power supply control method thereof | |
| US20200346552A1 (en) | Battery balancing system, vehicle, battery balancing method, and storage medium | |
| CN116545080A (en) | Battery charging control method, control device, energy storage system and storage medium | |
| CN113659678A (en) | Battery pack balance control method and device and battery pack balance system | |
| CN114899923B (en) | Dynamic equalization system and method for battery pack in medium-high voltage energy storage system | |
| CN109802454B (en) | Battery pack balance control method and device | |
| CN108258748A (en) | Power-on control method and system for battery cabinet | |
| CN113054701A (en) | Built-in multi-battery parallel management system and management method thereof | |
| CN115566777B (en) | Battery system and energy storage system | |
| CN115664932B (en) | Energy block parallel communication method and device | |
| CN105356560A (en) | Two-stage distributed battery pack active equalization control system and method thereof | |
| CN114361561B (en) | Novel battery pack grouping system capable of being selectively combined and grouped and grouping method | |
| CN115986883A (en) | Energy storage system and control method thereof | |
| CN110600819B (en) | Electric quantity balance control system and method of battery system | |
| CN110226257A (en) | For managing the method and system of battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |