CN110896156A - Energy storage module - Google Patents
Energy storage module Download PDFInfo
- Publication number
- CN110896156A CN110896156A CN201811060925.XA CN201811060925A CN110896156A CN 110896156 A CN110896156 A CN 110896156A CN 201811060925 A CN201811060925 A CN 201811060925A CN 110896156 A CN110896156 A CN 110896156A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- battery
- unit
- control unit
- current detection
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses an energy storage module. The energy storage module includes: a main battery control unit and a plurality of energy storage sub-networks; each energy storage sub-network comprises a slave battery control unit, a current detection unit, a plurality of battery monitoring units and a plurality of battery packs; the master battery control unit is connected with the plurality of slave battery control units and is used for controlling the plurality of slave battery control units; the slave battery control unit is connected with the current detection unit and each battery monitoring unit in a wireless communication mode and is used for managing the current detection unit and the plurality of battery monitoring units; each battery monitoring unit is connected with one of the plurality of battery packs and is used for monitoring one of the plurality of battery packs; and the current detection unit is connected with the plurality of battery packs and is used for detecting the current passing through the plurality of battery packs. According to the energy storage module provided by the embodiment of the invention, the internal structure of the energy storage system is simplified, so that the cost of the energy storage system is reduced.
Description
Technical Field
The invention relates to the field of energy storage, in particular to an energy storage module.
Background
An energy storage system is a system that can store a large amount of electric energy and can efficiently use the stored energy. In an energy storage system, management is required for various requirements such as charging and discharging of a power battery, battery equalization, and insulation detection. By effectively managing the power cells in the energy storage system, battery life may be extended, as well as providing stable power to the load.
For the Management requirement of the energy storage system, the single batteries may be connected in series and parallel to form an electrical cabinet or a Battery box, and the electrical cabinet or the Battery box may be equipped with Management units such as a Battery monitoring Unit (CMC), a Current detection Unit (CSU), a Slave Battery Management Unit (SBMU), and the like.
At present, a Controller Area Network (CAN) bus communication or a daisy chain communication is generally adopted between the management units, and the number of wire harnesses in the two communication modes is large and the wire harnesses are long, so that the internal structure of the energy storage system is complex.
Disclosure of Invention
The embodiment of the invention provides an energy storage module which can simplify the internal structure of an energy storage system.
According to an aspect of an embodiment of the present invention, there is provided an energy storage module including: a master battery control unit and a plurality of energy storage sub-networks.
Each energy storage sub-network comprises a slave battery control unit, a current detection unit, a plurality of battery monitoring units and a plurality of battery packs; the master battery control unit is connected with the plurality of slave battery control units and is used for controlling the plurality of slave battery control units; the slave battery control unit is connected with the current detection unit and each battery monitoring unit in a wireless communication mode and is used for managing the current detection unit and the plurality of battery monitoring units; each battery monitoring unit is connected with one of the battery packs and used for monitoring one of the battery packs; and the current detection unit is connected with the plurality of battery packs and is used for detecting the current passing through the plurality of battery packs.
The energy storage module according to the embodiment of the invention comprises a main battery control unit, a slave battery control unit, a current detection unit, a plurality of battery monitoring units and a plurality of battery packs. The slave battery control unit is connected with the current detection unit in a wireless communication mode, and the slave battery control unit is connected with each battery monitoring unit in a wireless communication mode. A large number of wire harness connections between the slave battery control unit and the current detection unit, and between the slave battery control unit and the battery monitoring unit are avoided, thereby simplifying the internal structure of the energy storage system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating the structure of an energy storage module according to one embodiment of the invention;
FIG. 2 is a schematic diagram illustrating the structure of an energy storage module according to another embodiment of the invention;
FIG. 3 is a schematic diagram showing the structure of a battery monitoring unit according to an embodiment of the present invention;
fig. 4 is a schematic view showing a structure of a current detection unit according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an embodiment of the present invention employing time division multiplexing;
fig. 6 is a schematic diagram illustrating a technique of frequency division multiplexing according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For a better understanding of the present invention, an energy storage system according to embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be noted that these embodiments are not intended to limit the scope of the present disclosure.
Fig. 1 is a schematic structural view illustrating an energy storage module according to an embodiment of the present invention. As shown in fig. 1, in one embodiment, the energy storage module 100 may include a Master Battery control unit (MBMU) 110 and a plurality of energy storage sub-networks 120.
Each energy storage sub-network 120 comprises a slave battery control unit 130, a current detection unit 140, a plurality of battery monitoring units 150 and a plurality of battery packs (not shown in the figure); the master battery control unit 110 is connected to the plurality of slave battery control units, and is configured to control the plurality of slave battery control units. The slave battery control unit 130 is connected to the current detection unit 140 and the battery monitoring unit 150 by wireless communication, and manages the current detection unit 140 and the plurality of battery monitoring units 150. Each battery monitoring unit 150 is connected to one of the plurality of battery packs for monitoring the one of the plurality of battery packs. And a current detection unit 140 connected to the plurality of battery packs, for detecting currents passing through the plurality of battery packs.
In the energy storage module 100 according to the embodiment of the present invention, the slave battery control unit 130 is connected to the current detection unit 140 and the plurality of battery monitoring units 150 in a wireless communication manner, so that wireless communication between the slave battery control unit 130 and the current detection unit 140 and the battery monitoring units 150 is realized. Thereby avoiding a large number of wire harness connections from the battery control unit 130 to the current detection unit 140 and the battery monitoring unit 150 to simplify the internal structure of the energy storage module.
Moreover, since the prior art uses CAN bus, daisy chain or optical fiber communication between the slave battery control unit 130 and the current detection unit 140 and between the slave battery control unit 130 and the battery monitoring unit 150, the cost of the wiring harness is high. The energy storage module in the embodiment of the invention can save the cost of splitting the wiring harness in the middle of the energy storage module, thereby reducing the cost of the energy storage management system 100.
Fig. 2 shows a schematic structural diagram of an energy storage module according to another embodiment of the invention. As shown in fig. 2, in one embodiment, the master battery control unit 110 may be connected with the slave battery control unit 130 using CAN communication or optical fiber communication to manage a plurality of slave battery control units 130.
As one example, the master battery control unit 110 may receive battery pack performance data from the slave battery control unit 130. The battery performance data may include State Of Charge (SOC), State Of Health (SOH), and high voltage sampling. The master battery control unit 110 may also send a control instruction to the slave battery control unit 130. The control command may be a drive control command. As one example, the driving control instruction may include a driving control strategy and a code from the battery control unit 130.
In one embodiment, the slave battery control unit 130 may be used to manage the current detection unit 140 and the plurality of battery monitoring units 150. The slave battery control unit 130 may receive the current sampling data from the current detection unit 140 and the battery pack state data from the battery monitoring unit 150, and may process the received battery pack state data and/or the current sampling data to obtain battery pack performance data such as a state of charge and a state of health. The slave battery control unit 130 may transmit performance data such as a state of charge and a state of health to the master battery control unit 110, and may also transmit a control instruction to the current detection unit 140 and the plurality of battery monitoring units 150.
In one embodiment, an insulation detection Module 160 (IMM) may also be included in the energy storage Module 100. The insulation detection module 160 may be connected to the main battery control unit 110 through CAN communication, and transmit data such as a detected insulation resistance value to the main battery control unit 110. The main battery control unit 110 may send an insulation detection start instruction to the insulation detection module 160 to control the insulation detection function of the insulation detection module 160 to start.
In one embodiment, the energy storage module 100 may further include a Power Conversion System (PCS) converter 170. The energy storage converter may be connected to the main battery control unit 110 through CAN communication or serial communication, such as RS485 communication. The main battery control unit 110 may provide battery state data to the energy storage converter 170, and the energy storage converter 170 may determine to discharge or charge the battery in the energy storage sub-network 120 according to the received battery state data, thereby implementing protective charging and discharging of the battery, and ensuring safe operation of the energy storage system.
In a practical application scenario, the energy storage module of the embodiment of the present invention may be represented as a container or other storage container in an energy storage power station. As shown in fig. 2, the master battery control unit 110 may be located in a master cabinet, and each energy storage sub-network 120 may be located in one of the electric cabinets. In an electrical cabinet, the battery monitoring unit 150 may monitor status data of a battery pack, and the battery monitoring unit 150 and the monitored battery pack may be located in a battery module.
As shown in fig. 2, an AC/DC power source (i.e., AC/DC power source) may be further disposed in the main control cabinet, and the AC/DC power source may be used to supply power to the main battery control unit 110 and the insulation detection module 160. In each energy storage sub-network 120, an ac/dc power supply may be provided to supply power from the battery control unit 221. The electric quantity in the ac/dc power source may be from the outside, and this is not particularly limited in the embodiment of the present invention.
With continued reference to fig. 2, a switching device may be disposed in the energy storage management module 100, and the disposed switching device is used to control the connection and disconnection of the electrical connections of the various parts in the energy storage management module 100, so as to ensure the safety and reliability of the energy storage module.
As an example, a master isolation switch K1 may be provided at the energy storage converter 170, and the master isolation switch K1 may be a manual switching device that controls the master isolation switch K1 to charge or discharge the battery packs in the energy storage sub-network 120. In this example, the mechanical structure of the main isolation switch K1 may be a ganged switch structure.
As an example, a circuit breaker K2 may be provided between the ac/dc power source in the energy storage sub-network 120 and the outside world, and the circuit breaker K2 may be a manual switching device for controlling the outside world to supply and cut off the ac/dc power source by controlling the circuit breaker K2. In this example, the mechanical structure of the circuit breaker K2 may be a ganged switch structure.
As an example, in each energy storage sub-network 120, a disconnector K3, a main positive relay K4 and a main negative relay K5 may be provided. Furthermore, a pre-charge relay K6, a pre-charge resistor R and a FUSE may be further provided to protect the energy storage module.
As one example, the isolation switch K3 may be a manual switching device. In this example, the mechanical structure of the isolation switch K3 may be a ganged switch structure.
As one example, the main positive relay K4, the main negative relay K5, and the precharge relay K6 are controlled switches, and are controlled by the slave battery control unit 130.
In the embodiment of the invention, the switch device with the ganged switch structure, such as the main isolating switch K1, the circuit breaker K2 and the isolating switch K3, can be manually controlled, so that the contacts of the switch device can be simultaneously switched on or off.
As an example, in the energy storage sub-network 120 shown in fig. 2, both contacts of the disconnector K3 can be switched on or off simultaneously by manual control.
As a specific example, when charging the battery pack, the slave battery control unit 130 may control the precharge relay K6 to be closed to precharge the battery pack. After a preset time, the slave battery control unit 130 may control the main positive relay K4 to be closed to charge the battery, so that it may be prevented that the main positive relay K4 and the main negative relay K5 are burned out at an instant of directly controlling the closing of the main positive relay K4 when the battery pack is charged, thereby ensuring the safety and reliability of the energy storage module.
The specific structures of the battery monitoring unit 150 and the current detection unit 140, and the management control of the current detection unit 140 and the battery monitoring unit 150 from the battery control unit 130 are described below by fig. 3 and 4.
Fig. 3 shows a schematic structural diagram of a battery monitoring unit according to an embodiment of the invention. Fig. 4 shows a schematic structural diagram of a current detection unit according to an embodiment of the present invention.
As shown in fig. 3, the battery monitoring unit 150 may include: a battery sampling and equalizing circuit 151, a front end sampling and transmitting unit 152, a first wireless transmission micro-control unit 153 and a first antenna module 154 which are connected in sequence.
In one embodiment, the battery monitoring unit 150 may be used to monitor a battery pack. A battery sampling and equalizing circuit 151 in the battery monitoring unit 150, configured to sample one of the plurality of battery packs to obtain battery pack state data; a front-end sampling and transmission unit 152, configured to receive battery pack status data and send the battery pack status data to the first wireless transmission micro control unit 153; and a first wireless transmission mcu 153 for transmitting the battery pack status data through the first antenna module 154 according to a preset wireless communication network protocol.
In one embodiment, the first wireless transmission micro control unit 153 is further configured to receive the equalization control command through the first antenna module 154, and send the equalization control command to the front-end sampling and transmitting unit 152; the front-end sampling and transmitting unit 152 is further configured to transmit an equalization control instruction to the battery sampling and equalizing circuit 151; the battery sampling and equalizing circuit 151 is further configured to perform equalization control on the specified battery pack according to the equalization control instruction.
In this embodiment, the battery pack status data monitored by the battery monitoring unit 150 may include voltage, temperature, and fault status data, and the battery pack status data is sent to the slave battery control unit by wireless communication; the balance control instruction and the like may be transmitted from the battery control unit 130 to the battery monitoring unit 150.
As one example, equalization control instructions may be used to indicate whether active equalization or passive equalization is to be performed. The equalization control command may include information such as an equalization control strategy and a battery pack code.
In one embodiment, the battery monitoring unit 150 further includes a first power supply unit 155; the first power supply unit 155 is used for supplying power to the front-end sampling and transmitting unit 152 and the first wireless transmission micro-control unit 153.
In the prior art, the battery monitoring unit and the slave battery control unit adopt CAN or daisy chain communication, so that the problems of too much and overlong wiring harness, easy external interference, high cost and the like are caused. In order to reduce external interference, in the prior art, an isolation strip is usually added on the battery monitoring unit, and an isolation CAN transceiver, an isolation power supply and other components are used, so that the cost is further increased, and the circuit architecture is more complex.
In the embodiment of the invention, wireless communication is adopted between the battery monitoring unit and the slave battery control unit so as to reduce the connection of a wiring harness; and the battery monitoring unit takes a module ground (high voltage ground) as a reference, and an isolation unit is not required to be additionally arranged, so that the internal structure is simplified and the cost is reduced.
As shown in fig. 4, the current detection unit 140 may include: the current sampling circuit 141, the current sampling and transmitting unit 142, the second wireless transmission micro-control unit 143 and the second antenna module 144 are connected in sequence.
In one embodiment, the current sampling circuit 141 is configured to sample currents of a plurality of battery packs to obtain current sampling data of the plurality of battery packs; the current sampling and transmitting unit 142 is used for receiving the current sampling data and sending the current sampling data to the second wireless transmission micro control unit 143; and the second wireless transmission micro-control unit 143 is configured to send the current sampling data through the second antenna module 144 according to a preset wireless communication network protocol.
In one embodiment, the second wireless transmission micro control unit 143 is further configured to send the current sampling control command received through the second antenna module 144 to the current sampling and transmitting unit 142; the current sampling and transmitting unit 142 is further configured to transmit a current sampling control instruction to the current sampling circuit 141; the current sampling circuit 141 is further configured to sample currents of the plurality of battery packs according to the current sampling control instruction.
In one embodiment, the current detection module further includes a second power supply unit 145; and a second power supply unit 145 for supplying power to the current sampling and transmitting unit 142 and the second wireless transmission micro control unit 143.
In this embodiment, when the battery packs are charged, the current sampling data of the plurality of battery packs detected by the current detection unit 140 is input currents or charging currents of the plurality of battery packs; when the battery packs are discharged, the current sampling data of the plurality of battery packs detected by the current detection unit 140 is output currents or discharge currents of the plurality of battery packs.
The current detection unit 140 may transmit the current sampling data to the corresponding slave battery control unit 130 through a wireless communication manner. The sampling control command may be sent from the battery control unit 130 to the current detection unit 140, and the sampling control command may include information such as a sampling control policy and a battery pack code, which is not specifically limited herein.
In the embodiment of the invention, the current detection unit and the slave battery control unit adopt wireless communication, so that the wiring harness connection in the energy storage module can be reduced, the internal structure of the energy storage module is simplified, and the cost is reduced.
In the description of the above-described embodiments, in the energy storage module 100, the wireless communication manner employed by the slave battery control unit 130 and the current detection unit 140, and the slave battery control unit 130 and the battery monitoring unit 150 is short-range wireless communication.
In one embodiment, the communication distance of the short-range wireless communication is 40 meters or less.
In an embodiment, the communication mode of the short-range wireless communication may be a wireless communication mode such as bluetooth wireless communication or ZigBee wireless communication, or may be another wireless communication mode other than bluetooth communication or ZigBee communication, and the embodiment of the present invention is not particularly limited.
A specific manner of wireless communication between the slave battery control unit 130 and the battery monitoring unit 150, and between the slave battery control unit 130 and the current detection unit 140 is described below with reference to fig. 5 and 6.
Fig. 5 is a schematic diagram of an embodiment of the invention employing time division multiplexing. As shown in fig. 5, the abscissa is time t and the ordinate is frequency f. Wherein, the numbers 1 to n represent n paths of transmission, and each path of transmission comprises uplink data transmission and downlink data transmission. n is an integer greater than 1. As can be seen from fig. 5, n-channel transmission performs data transmission in the same frequency band (i.e., in the same channel), but the n-channel transmission occupies different time slots, i.e., the n-channel transmission performs data transmission in different time periods. And the uplink data transmission and the downlink data transmission of each path of transmission occupy different time slots. As shown in fig. 5, uplink 1 and downlink 1 are uplink data transmission and downlink data transmission of the 1 st transmission.
In the embodiment of the invention, the time division multiplexing technology is adopted, so that the mutual interference of signals and the external interference in the process of transmitting multi-channel data can be avoided, and the reliability of the energy storage module is improved. Specifically, the time division multiplexing technique may divide the time of a channel used for data transmission into a plurality of time slots, where each time slot may be used for transmitting one path of data, and each path of data is transmitted in its own time slot exclusively through the channel. The uplink data transmission and the downlink data transmission can be configured to use different time slots by using a time division multiplexing technology, that is, the uplink data transmission and the downlink data transmission can also adopt time division multiplexing.
Fig. 6 is a schematic diagram of an embodiment of the present invention, which employs a frequency division multiplexing technique. As shown in fig. 6, in the schematic diagram using the frequency division multiplexing technique, the abscissa is time t and the ordinate is frequency f. Wherein, the numbers 1 to n represent n paths of transmission, and each path of transmission comprises uplink data transmission and downlink data transmission. n is an integer greater than 1. As shown in fig. 6, in the frequency division multiplexing technology, uplink data transmission and downlink data transmission may occupy different sub-bands (i.e., frequency bands occupying different frequencies). If uplink 1 indicates uplink data transmission of the 1 st transmission, downlink 1 indicates downlink data transmission of the 1 st transmission. The uplink 1 and the downlink 1 occupy different sub-bands to realize data transmission by using frequency division multiplexing technology.
In the embodiment of the invention, the frequency division multiplexing technology is adopted, so that the mutual interference of signals and the external interference in the process of transmitting multi-channel data can be avoided, and the reliability of the energy storage module is improved. Specifically, the frequency division multiplexing technique may divide a total bandwidth of a channel for data transmission into a plurality of sub-bands, where each sub-band may be used to transmit one path of data, and each path of data is transmitted in a respective sub-band. When the frequency division multiplexing technology is adopted to transmit data, the total bandwidth of a channel for data transmission can be larger than the sum of all the sub-frequency bands. In order to ensure that signals do not interfere with each other in the data transmission process of each sub-band, an isolation band can be arranged between two adjacent sub-bands.
In the present embodiment, in each energy storage sub-network 120, the current detection unit 140 and the plurality of battery monitoring units 130 are connected to the slave battery control unit using a time division multiplexing technique or a frequency division multiplexing technique.
In one embodiment, it is assumed that the number of the current detection units 140 included in one energy storage sub-network 120 is 1, the number of the battery monitoring units 150 is N, and N is a positive integer.
In this embodiment, the current detection unit 140 and the plurality of battery monitoring units 150 may use time division multiplexing to occupy N +1 different time slots for data transmission from the battery control unit 130.
In this embodiment, the current detection unit 140 and the plurality of battery monitoring unit 150 may use frequency division multiplexing to occupy N +1 different sub-bands for data transmission from the battery control unit 130.
In one embodiment, each current detection unit 140 may be configured to perform uplink data transmission or downlink data transmission with the slave battery control unit using a time division multiplexing technique or a frequency division multiplexing technique;
as an example, for one current detection unit 140 in the energy storage sub-network 120, the current detection unit 140 may utilize two different time slots or two different sub-bands for uplink data transmission and downlink data transmission with the slave battery control unit 130.
In one embodiment, a plurality of battery monitoring units 150 may be configured to perform uplink data transmission or downlink data transmission with the slave battery control unit using time division multiplexing or frequency division multiplexing.
As an example, for one battery monitoring unit 150 in the energy storage sub-network 120, the battery monitoring unit 150 may utilize two different time slots or two different sub-bands for uplink data transmission and downlink data transmission with the slave battery control unit 130.
According to the energy storage module of the embodiment of the invention, the communication connection between the slave battery control unit and the battery monitoring unit and between the slave battery control unit and the current detection unit can be changed from a wire transmission mode based on a wire harness to a wireless transmission mode based on a wireless network. This connection simplifies the complexity of the internal structure of the energy storage module and saves on the cost of the energy storage module.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product or computer-readable storage medium. The computer program product or computer-readable storage medium includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. An energy storage module, comprising: a main battery control unit and a plurality of energy storage sub-networks;
each energy storage sub-network comprises a slave battery control unit, a current detection unit, a plurality of battery monitoring units and a plurality of battery packs; wherein the content of the first and second substances,
the master battery control unit is connected with the plurality of slave battery control units and is used for controlling the plurality of slave battery control units;
the slave battery control unit is connected with the current detection unit and each battery monitoring unit through wireless communication and is used for managing the current detection unit and the plurality of battery monitoring units;
each battery monitoring unit is connected with one battery pack in the plurality of battery packs and is used for monitoring the battery pack;
the current detection unit is connected with the plurality of battery packs and used for detecting the current passing through the plurality of battery packs.
2. The energy storage module of claim 1, wherein in the energy storage sub-network:
the current detection unit and the plurality of battery monitoring units are connected with the slave battery control unit by using a time division multiplexing technology or a frequency division multiplexing technology.
3. The energy storage module of claim 1, wherein in the energy storage sub-network:
the current detection unit is used for performing uplink data transmission or downlink data transmission with the slave battery control unit by using a time division multiplexing technology or a frequency division multiplexing technology;
the plurality of current detection modules are used for performing uplink data transmission or downlink data transmission with the slave battery control unit by using a time division multiplexing technology or a frequency division multiplexing technology.
4. The energy storage module of claim 1,
the wireless communication is a short-range wireless communication, wherein,
the communication distance of the short-range wireless communication is 40 meters or less, and wherein,
the communication means of the short-range wireless communication includes any one of: bluetooth wireless communication and zigbee wireless communication.
5. The energy storage module of claim 1,
the battery monitoring unit includes: the wireless transmission system comprises a battery sampling and equalizing circuit, a front end sampling and transmission unit, a first wireless transmission micro-control unit and a first antenna module which are sequentially connected.
6. The energy storage module of claim 5, wherein the battery monitoring unit further comprises a first power supply unit;
and the first power supply unit is used for supplying power to the front-end sampling and transmitting unit and the first wireless transmission micro-control unit.
7. The energy storage module of claim 1,
the current detection unit includes: the current sampling circuit, the current sampling and transmission unit, the second wireless transmission micro control unit and the second antenna module are connected in sequence.
8. The energy storage module of claim 7, wherein the current detection module further comprises a second power supply unit;
and the second power supply unit is used for supplying power to the current sampling and transmitting unit and the second wireless transmission micro-control unit.
9. The energy storage module of claim 1, further comprising an insulation detection module;
and the insulation detection module is connected with the main battery control unit through CAN communication.
10. The energy storage module of claim 1, further comprising an energy storage converter;
the energy storage converter is connected with the main battery control unit through CAN communication or serial port communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060925.XA CN110896156A (en) | 2018-09-12 | 2018-09-12 | Energy storage module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060925.XA CN110896156A (en) | 2018-09-12 | 2018-09-12 | Energy storage module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110896156A true CN110896156A (en) | 2020-03-20 |
Family
ID=69785739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060925.XA Pending CN110896156A (en) | 2018-09-12 | 2018-09-12 | Energy storage module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110896156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050377A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Method, apparatus and system for determining state of charge |
| WO2023212869A1 (en) * | 2022-05-05 | 2023-11-09 | 宁德时代新能源科技股份有限公司 | Communication method for energy storage system, and energy storage system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270666A (en) * | 2010-11-02 | 2013-08-28 | 纳维达斯解决方案有限公司 | Wireless battery area network for smart battery management |
| CN108306067A (en) * | 2018-02-07 | 2018-07-20 | 无锡瓴芯电子科技有限公司 | A kind of series battery modularization management system and method |
-
2018
- 2018-09-12 CN CN201811060925.XA patent/CN110896156A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270666A (en) * | 2010-11-02 | 2013-08-28 | 纳维达斯解决方案有限公司 | Wireless battery area network for smart battery management |
| CN108306067A (en) * | 2018-02-07 | 2018-07-20 | 无锡瓴芯电子科技有限公司 | A kind of series battery modularization management system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050377A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Method, apparatus and system for determining state of charge |
| WO2023212869A1 (en) * | 2022-05-05 | 2023-11-09 | 宁德时代新能源科技股份有限公司 | Communication method for energy storage system, and energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3557687B1 (en) | Battery management unit and battery pack including same | |
| US9088052B2 (en) | Battery multi-series system and communication method thereof | |
| JP2020504422A (en) | Master battery management unit and battery pack including the same | |
| KR101596487B1 (en) | Battery management system sending 2nd protection and dignosis signal using fewer isolation devices | |
| US20090027009A1 (en) | System and method for battery management | |
| CN103414224A (en) | High-capacity high-voltage integrated battery pack system and control method thereof | |
| KR20130101457A (en) | Battery energy storage apparatus using wireless controlling method | |
| US12009487B2 (en) | Slave battery management system at a boundary of metal housing and battery system including the same | |
| CN113078714B (en) | Energy storage system and control method thereof | |
| CN103107565A (en) | Static balanced method of battery management system of electric vehicle | |
| CN112467239A (en) | Battery management device, energy storage equipment and communication method | |
| CN110896156A (en) | Energy storage module | |
| CN110854954A (en) | Intelligent scheduling system and scheduling method for battery cluster of energy storage system | |
| WO2011158051A1 (en) | System and method for charge balancing and/or charging electrical energy-storing units | |
| EP3996237A1 (en) | Battery control system, battery pack, electrical vehicle, and id setting method for battery control system | |
| KR101613230B1 (en) | Wired communication unit changing communication protocol when malfunction has occurred in the communication line and wired communication system including thereof | |
| CN111049243A (en) | Wireless power supply system and aircraft | |
| CN111525602A (en) | Energy storage system and energy storage device | |
| CN116388324A (en) | Voltage equalization module, method, energy storage device, and readable storage medium | |
| CN110896157A (en) | Energy storage system | |
| WO2021125678A1 (en) | Parallel battery relay diagnosis device and method | |
| CN116365068B (en) | Multi-configuration concurrent communication control method and device for large-scale distributed energy storage battery | |
| KR20190142152A (en) | Energy storage system including System BMS | |
| CN112448451B (en) | Weak power supply method and device for battery pack management system and battery pack management system | |
| CN218648595U (en) | Active equalization circuit and active equalization system for lithium battery BMS |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200320 |