WO2012026574A1

WO2012026574A1 - Storage-battery information management device

Info

Publication number: WO2012026574A1
Application number: PCT/JP2011/069270
Authority: WO
Inventors: 健司泰間
Original assignee: 三洋電機株式会社
Priority date: 2010-08-27
Filing date: 2011-08-26
Publication date: 2012-03-01

Abstract

A storage-battery information management device (10) provided with a main unit (20) that stores storage-battery information data (30) hierarchically, an input unit (14) such as a keyboard, a search unit (16) for searching memory contents using a search key, and a communication control unit (18) that can communicate with a network (32). The storage-battery information data includes storage-battery identification information that distinguishes between individual storage batteries, storage-battery status information indicating the status of each storage battery, aggregate-identification information that distinguishes between storage-battery aggregates in which the storage batteries are arranged, and facility-identification information that distinguishes between facilities in which the storage-battery aggregates are used.

Description

Storage battery information management device

The present invention relates to a storage battery information management apparatus, and more particularly, to a storage battery information management apparatus that stores information related to individual storage batteries used in the form of a storage battery assembly in which a plurality of storage batteries are combined in a searchable manner.

In recent years, the use of renewable energy such as photovoltaic power generation is expanding due to concerns over the depletion of fossil fuels such as oil and the need to reduce CO ₂ emissions. Further, as energy saving to save electric power, lower power consumption of devices and use of secondary batteries are performed. Although a large capacity is required as a secondary battery for energy saving of electric power, for example, a lead storage battery, a sodium sulfur battery, a lithium ion battery, or the like can be used.

As described above, when storage batteries are used in a wide range as part of energy utilization, it is necessary to manage them. For example, in Patent Document 1, as a lithium ion battery management device, a charge / discharge state of a lithium ion battery is determined based on a measurement value of a charge / discharge current of a lithium ion battery, a measurement value of a temperature, and power supply information of a commercial power supply. And calculating the remaining capacity of the lithium ion battery.

JP 2006-140094 A

As described above, when a storage battery is used in a wide range, in addition to managing the characteristics of the storage battery, it is necessary to track where the storage battery is. In addition, since a large-capacity storage battery is expensive, there is a need for maintenance and inspection, and it is desirable to record the repair history and the like. Furthermore, since it is expensive, it is desirable to record what type of usage history is when a used product is distributed. As described above, there is a high need for storing storage battery information, but a system that can systematically store and search storage battery information is not yet sufficient.

An object of the present invention is to provide a storage battery information management device capable of systematically knowing and tracking information on storage batteries distributed over a wide range. Another object is to provide a storage battery information management device that makes it possible to systematically store and search information related to storage batteries distributed over a wide range.

In the storage battery information management device according to the present invention, the storage battery body arranges storage battery state information indicating the state of the storage battery body for each of the storage battery bodies that constitute a storage battery assembly by combining a plurality of storage batteries. It is characterized by comprising an output unit that outputs in association with assembly identification information for distinguishing the storage battery assembly to be used and facility identification information for distinguishing the facility in which the storage battery assembly is used.

With the above configuration, the storage battery information management device outputs the storage battery state information in association with the assembly identification information and the facility identification information for each of the storage battery bodies. It becomes possible to know and track information systematically in a wide range.

It is a figure explaining the structure of the storage battery information management apparatus of embodiment which concerns on this invention. It is a figure explaining the hierarchical structure of the information storage used for the storage battery information management apparatus of embodiment which concerns on this invention. In the storage battery information management apparatus of embodiment which concerns on this invention, it is a figure demonstrated in relation to the structure of a storage battery pack about the storage battery state information memorize | stored. It is a figure which shows an example of the search data in the storage battery information management apparatus of embodiment which concerns on this invention.

Embodiments according to the present invention will be described below in detail with reference to the drawings. Below, although a lithium ion battery is demonstrated as a storage battery, secondary batteries other than this may be sufficient. For example, a lead storage battery, a sodium sulfur battery, a nickel metal hydride battery, a nickel cadmium battery, or the like may be used.

In the following, a factory facility will be described as a power consuming facility in which a storage battery assembly is provided. However, this is an example, and any facility including a storage battery and a load that consumes power may be used. It may be a house, a store, a large-scale facility, or the like.

Also, in the following, distinguishing from the unit storage battery called cell, which is the minimum unit of the storage battery constituting the storage battery assembly, configuring the storage battery assembly and calling the minimum unit of management as the storage battery body, a plurality of unit storage batteries are combined The storage battery pack will be described as a storage battery body. This is an example of the description, and a battery called by a name other than the storage pack may be used as a storage battery body.

Also, in the following, company-factory building-storage battery rack-storage battery pack will be described as a hierarchy for storing storage battery information. This is an example of the explanation, the facility identification information that can distinguish the facility where the storage battery body is located, the assembly identification information that can identify which storage battery assembly is in the facility, and the individual storage battery body As long as four of the storage battery identification information and the storage battery state information related to the storage state of the storage battery body are hierarchized, other hierarchical structures may be used.

In the following description, the same elements are denoted by the same reference symbols in all drawings, and redundant description is omitted. In the description in the text, the symbols described before are used as necessary.

FIG. 1 is a diagram illustrating the configuration of the storage battery information management device 10. The storage battery information management device 10 is a storage device that stores information related to storage batteries. Specifically, the storage battery information management device 10 is a server device as a data center provided by a storage battery manufacturer. For example, when a storage battery manufacturer sells a storage battery to a customer such as a company, the data such as the storage state of each storage battery is transmitted to the server device of this data center via a network by a service contract etc. Although this server device can collectively manage information related to each storage battery, this server device can be used as the storage battery information management device 10.

The storage battery information management device 10 can be constituted by a computer including a large-capacity memory, and the storage content is stored using a main body unit 20 that stores storage battery information data 30 hierarchically, an input unit 14 such as a keyboard, and a search key. And a communication control unit 18 capable of communicating with the network 32. These elements are connected to each other by an internal bus.

Here, the hierarchical storage battery information data 30 stored in the storage battery information management apparatus 10 will be described first, and then, as a function of each element constituting the storage battery information management apparatus 10, how to store the storage battery information data 30. Explain how to handle.

FIG. 2 is a diagram for explaining the hierarchical structure of the storage battery information data 30 stored by the storage battery information management device 10. The information data shown as Company A in FIG. 2 is facility identification information 40 that distinguishes facilities where storage batteries are arranged. The facility identification information includes a name or name, an address, a telephone number, and the like.

In FIG. 2, the information data shown as the A1 building and the A2 building is facility subdivision identification information 42 that distinguishes the lower-layer facilities among the facilities specified by the facility identification information 40. In this example, when company A has several factory buildings that consume electricity on its premises, and the company A's address is too wide, it is necessary to specify the location of storage batteries in a slightly narrower area. The name of the factory building is subordinate to the facility identification information 40. If the storage battery is arranged only in one building having a suitable size for company A, the facility segmentation identification information 42 is not necessary.

In FIG. 2, the information data indicated as A11 rack, A12 rack, A13 rack, and A21 rack distinguish the storage battery aggregate in which the storage batteries are arranged when a plurality of storage batteries are combined to form a storage battery assembly. It is aggregate identification information 50. In FIG. 2, what is indicated as A111 pack to A119 pack and A121 pack is a storage battery identification information 52 for distinguishing a storage battery pack as a storage battery body which is a minimum unit of storage battery management.

Here, the storage battery assembly will be described. Although a lithium ion battery is used as a storage battery, a voltage between terminals of a unit storage battery called a unit cell of the lithium ion battery is about 1 V to 3 V, and its charge / discharge current capacity is also small. Thus, an assembled battery using a plurality of unit storage batteries is used, but depending on the power consumption of the load, it is necessary to use a combination of the assembled batteries. For example, if a storage battery capacity of about 1 MWh is required for air conditioning, lighting, etc. on a factory scale, the calculation requires about 200,000 to 300,000 unit storage batteries of lithium ion batteries.

When these are combined into one, the volume becomes large, so a plurality of unit storage batteries are combined to form one storage battery pack, a plurality of storage battery packs are combined to form one storage battery unit, and a plurality of storage battery units are combined. One storage battery rack is formed in combination, and a plurality of storage battery racks are combined to obtain a desired storage battery capacity. A storage battery assembly in a broad sense is a combination of unit storage batteries, and is a storage battery pack, a storage battery unit, or a storage battery rack. Of course, since the storage battery pack, the storage battery unit, and the storage battery rack are appropriately named, other names may be used. Moreover, the number of layers of the storage battery assembly for starting from the unit storage battery to obtain a desired storage battery capacity may be other than the three layers in the above example. For example, in the case of FIG. 2, the A11 rack, which is one storage battery rack, is composed of nine storage battery packs from A111 pack to A119 pack.

In the case of FIG. 2, since the storage battery pack that combines a plurality of unit storage batteries is the lowest hierarchy of storage battery management, the storage battery body that is the minimum unit of management becomes a storage battery pack, and pack identification that is identification information for distinguishing individual storage battery packs The information is storage battery identification information 52 that distinguishes the storage battery bodies. For each storage battery pack that is a storage battery body distinguished by this storage battery identification information 52, storage battery state information indicating the state of the storage battery body is collected. In other words, the storage battery status information is stored in the storage battery information management device 10 in association with the storage battery identification information 52.

Further, in the case of FIG. 2, since the upper hierarchy of the storage battery pack in the storage battery management is only the storage battery rack, the identification information of the storage battery rack is the assembly identification information 50. If there is another layer for storage battery management between the storage battery rack and the storage battery pack, such as a storage battery unit, for example, it is an aggregate subdivision of a lower hierarchy of the assembly identification information 50. Identification information.

FIG. 3 is a diagram showing the structural relationship of the storage battery rack 54, the storage battery pack 56, and the unit storage battery 58, and the acquisition of storage battery state information will be described using this. As shown in FIG. 3, one storage battery rack 54 is configured by connecting storage battery pack rows in which a predetermined number of storage battery packs 56 are connected in series and connected in parallel in a predetermined number of rows. In this example, five storage battery packs 56 are connected in series to form one storage battery pack row, and four storage battery pack rows are connected in parallel to form one storage battery rack 54. That is, one storage battery rack 54 is composed of 20 storage battery packs 56.

FIG. 3 shows an enlarged internal configuration of one storage battery pack 56. One storage battery pack 56 is configured by connecting 13 sets of 24 lithium ion storage battery unit cells, which are unit storage batteries 58, connected in parallel. That is, each storage battery pack 56 includes 24 × 13 = 312 unit storage batteries 58.

The voltage between the terminals of each of the 13 sets connected in series of the storage battery pack 56 is detected by the voltage detector 62 as a cell voltage. Further, the temperature of the storage battery pack 56 is detected by the temperature detector 64 as the pack temperature. These data are pack state data indicating the state of the storage battery pack 56, and here are storage battery state information. Further, the current of each storage battery pack row of the storage battery rack 54 is detected by the current detector 60 and becomes pack row current data.

One storage battery pack 56 is housed in one pack housing, and the housing is provided with a signal connector for transmitting 13 cell voltage signals and one pack temperature signal to the outside. In one

storage battery rack

54, 20 storage battery packs 56 are detachably accommodated in one rack housing. In the rack case, a control board 38 called PMU (Power management Unit) and a switch board 39 called BSU (Battery Switching Unit) operating under the control of the control board 38 are provided. The signal connector of each storage battery pack 56 and the control board 38 are connected by an appropriate signal line, whereby the control board 38 can acquire the storage battery state information of each storage battery pack 56.

The control board 38 has a function of receiving a transmission request for data, a storage battery state data which is pack state data of 20 storage battery packs 56, and a transmission function of transmitting four pack string current data collectively. Part. This transmission / reception unit communicates with the storage battery information management device 10 via the network 32, and transmits the storage battery state information to the storage battery information management device 10 in association with the storage battery identification information 52.

Thus, the storage battery state information indicating the state of the storage battery pack 56 that is a unit of storage battery management is associated with the storage battery identification information 52 that distinguishes the storage battery pack 56 from other storage battery packs 56, and is connected via the network 32. Is transmitted to the storage battery information management device 10 in real time. Since this information transmission is performed in units of the storage battery rack 54, the assembly identification information 50 can also be transmitted simultaneously. Therefore, the storage battery state information is associated with the storage battery identification information 52 and the assembly identification information 50 and transmitted to the storage battery information management device 10.

1, the communication control unit 18 has a function as an information acquisition unit that acquires information about the storage battery together with the input unit 14. The communication control unit 18 can communicate with each of the plurality of customers 34 using the storage battery via the network 32. From this viewpoint, the communication control unit 18 is an online information acquisition unit. In FIG. 1, companies A to N are shown as customers 34. Here, the customer 34 is a customer-side terminal that can communicate with the network 32. Specifically, the transmission / reception unit provided in the storage battery rack 54 corresponds to the customer 34 in FIG.

The input unit 14 is input means used for inputting the facility identification information 40 and the facility segmentation identification information 42. Specifically, when the storage battery rack 54 is sold to the customer 34 and installed, it is input from the input unit 14 of the storage battery information management apparatus 10 as installation information. The facility identification information 40 and the facility segmentation identification information 42 are input in association with the storage battery identification information 52 and the assembly identification information 50.

The input unit 14 is also used for inputting a change history of the storage battery pack 56. In the change history, the location of the storage battery pack 56 has been changed to a storage battery rack 54 different from the previous one, or the affiliation has been changed because the storage battery pack 56 has been used in a different facility from the previous one. Or that the storage battery pack 56 has been temporarily removed from the storage battery rack 54 for inspection and repair. The input of the change history is associated with at least the storage battery identification information 52, and the content of the change includes facility identification information 40, facility segmentation identification information 42, and aggregate identification information 50 associated with the change, along with the change timing information. .

In addition, since the storage battery pack 56 is a power supply device, special knowledge is required for its handling, and it is preferable to attach and detach the storage battery rack 54 from the storage battery manufacturer. When the notification is received or the attachment / detachment work is actually performed, the contents of the change history are input to the storage battery information management device 10 using the input unit 14 each time, so that the storage battery information is stored. Information stored in the management apparatus 10 is updated correctly.

For example, a case where a Y228 pack has been arranged in the Y22 rack of the Y factory of the X company up to now, and this Y228 pack has been removed due to circumstances, and is arranged as an A116 pack in the A11 rack A11 rack in FIG. To do. In this case, for Company A, this is equivalent to obtaining a new storage battery pack 56, so the storage battery manufacturer will install it or Company A will consult with the storage battery manufacturer and install it themselves. At this time, for example, according to a maintenance contract or the like, the storage battery manufacturer acquires information that the storage battery pack 56 is arranged as an A116 pack in the A1 building A11 rack.

The acquired information is associated with the storage battery identification information 52 that distinguishes Y228 pack = A116 pack, and is input to the storage battery information management apparatus 10 as part of the hierarchical data in FIG. The input is performed using the input unit 14 and the communication control unit 18 as described above. At this time, even in the hierarchical data of company X, the change is performed assuming that Y228 does not have Y228. And the change log | history which shows that such a change was performed is linked | related with the storage battery identification information 52 which distinguishes Y228 pack = A116 pack, and is input into the storage battery information management apparatus 10. FIG. That is, the change history is always associated with the storage battery identification information 52 of the storage battery pack 56 and stored in the storage battery information management device 10 wherever the storage battery pack 56 is.

The search unit 16 has a function of outputting extraction information that is information related to the storage battery that matches the extraction condition, using the extraction condition related to the storage battery state information. The extraction condition can be input from the input unit 14, but can be input from the search unit 16 when the search unit 16 has an interactive input / output function. As described above, the search unit 16 also has a function as an output unit that outputs the extraction information. However, the search unit 16 includes an output unit separately from the search unit 16 and outputs the extraction information that is a result of the search to the output unit. Also good.

As the extraction condition, a characteristic monitoring threshold value related to the storage battery state information can be used. For example, abnormal cell voltage, abnormal pack temperature, abnormal terminal voltage of the storage battery pack 56 determined from the cell voltage, abnormal state of charge of the storage battery pack 56 (State of Charge: SOC) determined from the input / output of the pack string current, etc. With respect to the storage battery pack 56 exceeding the range of the characteristic monitoring threshold value, a predetermined characteristic monitoring threshold value can be extracted as an abnormal storage battery pack.

As the extracted information, the facility identification information 40, the facility segmentation identification information 42, and the assembly identification information 50 of the storage battery pack 56 can be used. This makes it possible to quickly obtain where the abnormal storage battery pack is currently, and facilitates maintenance such as maintenance, inspection, repair, and replacement.

FIG. 4 shows an example of the search data. Here, a part of the search results obtained by searching for the storage battery pack 56 having the SOC characteristic threshold of 15% using the SOC characteristic threshold value of 15% as the extraction condition is shown. ing. Here, the storage battery pack 56 of SOC = 12% is searched. As the extracted information, SY070804002 is shown as the storage battery identification information 52, Company A is shown as the facility identification information 40, A1-A11-A116 is shown as the arrangement identification number as the facility segmentation identification information 42 and the assembly identification information 50. .

The arrangement identification number is an arrangement of the factory building number, the storage battery rack number, and the storage battery pack number in a predetermined order, and in the case of FIG. Therefore, in order to perform maintenance, go to the company A, go to the A1 building, look for the A11 rack, and find the A116 pack in it.

Also, as a change history, it can be seen that the storage battery pack 56 was charged and discharged at 30K at the X company Y factory, and was placed at the current company A about 7 months later. Maintenance can be performed with reference to such a history.

The storage battery information management device according to the present invention can be used for characteristic monitoring and maintenance after the storage battery is installed.

10 storage battery information management device, 14 input unit, 16 search unit, 18 communication control unit, 20 main unit, 30 storage battery information data, 32 network, 34 customer, 38 control board, 39 switch board, 40 facility identification information, 42 facility subdivision Identification information, 50 aggregate identification information, 52 storage battery identification information, 54 storage battery rack, 56 storage battery pack, 58 unit storage battery, 60 current detector, 62 voltage detector, 64 temperature detector.

Claims

About each of the storage battery bodies that constitute a storage battery aggregate by combining a plurality of storage batteries and become the minimum unit of management,
The storage battery state information indicating the state of the storage battery body is associated with the assembly identification information that distinguishes the storage battery assembly in which the storage battery body is disposed and the facility identification information that distinguishes the facility where the storage battery assembly is used. A storage battery information management device comprising an output unit for outputting.
In the storage battery information management device according to claim 1,
For each of the storage battery bodies, an information acquisition unit that acquires storage battery identification information that distinguishes the individual storage battery bodies, the storage battery state information, the assembly identification information, and the facility identification information;
An information storage unit that stores the storage battery state information, the assembly identification information, and the facility identification information in association with the storage battery identification information;
At least one of the storage battery identification information, the storage battery state information, the assembly identification information, or the facility identification information is acquired as a search key, and the information storage unit is searched and associated with the search key. A search unit for outputting other information to the output unit;
A storage battery information management device comprising:
In the storage battery information management device according to claim 2,
The information acquisition unit
The arrangement of the storage battery body is changed to a storage battery assembly different from the previous one, or the storage battery body is used in a different facility from the previous one, or the storage battery body is temporarily used for inspection and repair. For each being removed from the storage battery assembly, the respective contents are acquired as change history information,
The information storage unit stores the change history information in association with at least the storage battery identification information.
In the storage battery information management device according to claim 3,
The said search part outputs the extraction information which is the information regarding the said storage battery body which matches the said extraction conditions using the extraction conditions regarding the said storage battery state information, The storage battery information management apparatus characterized by the above-mentioned.
In the storage battery information management device according to claim 4,
The search unit outputs the facility identification information and the assembly identification information of the storage battery body as the extracted information, and the storage battery information management device.