JP2017130417A - Micro-battery, power storage device and micro-battery system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a micro-battery, a power storage device and a micro-battery system that can facilitate change of the configuration of the power storage device, and estimate the deterioration state of a used battery module with high accuracy, thereby promoting use and distribution of the battery module.SOLUTION: A micro-battery 1 includes a battery module 11, a micro-inverter 12, a data acquisition unit 13 for generating charging/discharging data containing charging/discharging history information obtained by detecting charging and discharging of the battery module 11, and a data recording unit 14 for recording charging/discharging data. In the micro-battery 1, the battery module 11, the micro-inverter 12, the data acquisition unit 13, and the data recording unit 14 are integrated with one another, and are integrally attachable/detachable to/from a power storage device B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a micro battery including a battery module that charges and discharges DC power, a power storage device including the micro battery, and a micro battery system.

  In recent years, in order to store electric power generated by solar power generation or perform peak shift of electric power load, power storage devices that store electric power are often installed in houses and other facilities. Such a power storage device includes one or a plurality of battery modules configured by connecting at least one battery cell (unit cell) that charges and discharges DC power.

  The battery module deteriorates with repeated charging and discharging, and the discharge capacity gradually decreases. Therefore, a battery user who uses the power storage device replaces the battery module when the discharge capacity of the battery module decreases and the operation of the power storage device is hindered.

  The used battery module removed from the power storage device by replacement has a reduced discharge capacity, but can be charged and discharged. Therefore, for other battery users, even a used battery module may still be fully usable. Also, from the viewpoint of effectively using resources and reducing waste, used battery modules should be reused as much as possible.

  However, when a power storage device is configured using a plurality of battery modules including used battery modules, a large difference may occur in the discharge capacities of the respective battery modules. In this case, if all the battery modules are uniformly charged and discharged, the battery module with the smallest discharge capacity becomes a limiting factor for charging and discharging of the entire power storage device, so that the apparent discharge capacity in the power storage device may be reduced. In some cases, the DC power as expected may not be discharged.

  Therefore, in Patent Document 1, the apparatus control unit acquires information on a used battery module, and controls charging and discharging of each battery module based on the information, thereby suppressing the occurrence of the above problem. A power storage device has been proposed.

JP 2014-187738 A

  However, the power storage device proposed in Patent Document 1 is configured to connect a plurality of battery modules to one inverter. Therefore, in the power storage device, only the number and capacity of battery modules suitable for the inverter can be used, and there is a problem that it is difficult to change the configuration of the power storage device.

  Further, the used battery modules have different deterioration states one by one according to the use state of the previous battery user. Therefore, it is difficult to accurately estimate the deterioration state of a used battery module only by inspecting the used battery module before reuse or simply monitoring the operation of the used battery module after reuse. In particular, in these methods, it is difficult to predict the future deterioration of a used battery module, so that a reused used battery module may become unusable immediately thereafter. And, in the power storage device proposed in Patent Document 1, only the operation of the used battery module after being incorporated into the power storage device (that is, after reuse) is monitored. It is difficult to estimate with high accuracy.

  Further, it is difficult to change the configuration of the power storage device and the deterioration state of the used battery module cannot be accurately estimated, which is a cause that hinders the introduction of the power storage device and the reuse of the used battery module (that is, This is a cause of hindering the use and distribution of the battery module.

  Therefore, the present invention facilitates the change of the configuration of the power storage device, and makes it possible to accurately estimate the deterioration state of the used battery module, thereby facilitating the use and distribution of the battery module, the power storage device, and the micro battery. The purpose is to provide a system.

  In order to achieve the above object, the present invention provides a microbattery that is electrically connected to a common power line to constitute one power storage device, and that charges and discharges DC power, and the battery module. Converts the DC power discharged by the battery and outputs power to the power line, and converts the power input from the power line into DC power charged by the battery module, and charging and discharging the battery module. A data acquisition unit that generates charge / discharge data including charge / discharge history information obtained by detecting the data, and a data recording unit that records the charge / discharge data, the battery module, the individual power conversion unit, The data acquisition unit and the data recording unit are integrated, and can be integrally attached to and detached from the power storage device. To provide a micro-battery, characterized in that Tsu.

  According to this microbattery, each includes a battery module and an individual power conversion unit, which are integrated with each other and are detachable integrally with the power storage device. Therefore, when one power storage device is configured using one or a plurality of micro batteries, the number of micro batteries constituting the power storage device is increased or decreased even if the discharge capacity of the power storage device needs to be changed later. It is possible to maintain a state in which both the discharge capacity and the power conversion capacity of the entire power storage device are adjusted by increasing or decreasing both. Therefore, the configuration of the power storage device can be easily changed.

  Furthermore, according to this microbattery, the data recording unit records the charge / discharge data including the charge / discharge history information that is the actual use history of the battery module. Therefore, by referring to the charge / discharge history information, it is possible to accurately estimate the deterioration state of the battery module included in the micro battery to be reused. In particular, it becomes possible to predict the future deterioration of the battery module provided in the used microbattery.

  Further, in the microbattery, when the data acquisition unit generates the charge / discharge data including temperature information obtained by measuring the temperature of the use environment of the microbattery provided with the data acquisition unit, preferable.

  According to this microbattery, the deterioration state of the battery module is further determined based on the temperature of the environment of use of the microbattery, which has a strong correlation with the deterioration of the battery module, obtained by referring to the temperature information included in the charge / discharge data. It is possible to estimate with high accuracy.

  In the microbattery described above, it is preferable that the data recording unit records model data including information on a model of the battery module included in the microbattery provided with the data recording unit.

  According to this microbattery, model data including model information that is useful information for estimating the deterioration state of the battery module can be recorded in the data recording unit together with the charge / discharge data.

  In the microbattery described above, it is preferable that the battery module and the data recording unit are integrally detachable from the microbattery.

  According to the microbattery, it is possible to prevent the data recording unit that records the charge / discharge data used when estimating the deterioration state of the battery module from being easily lost due to separation from the battery module. It becomes possible.

  In the above-described microbattery, the microrecorder provided in the used microbattery after being detached from the power storage device and before being attached to another power storage device is provided with a predetermined inspection device. It is preferable that inspection data including information on a deterioration state before reuse of the microbattery obtained by inspecting the battery is recorded.

  According to this microbattery, by recording the inspection data in the data recording unit, it is possible to refer to the inspection data before and after reuse, and thus it is possible to easily grasp the deterioration state of the battery module. .

  In the microbattery described above, there is a portion that is considered to be duplicated because the charge / discharge history information included in the charge / discharge data generated by the data acquisition unit satisfies a predetermined condition. In this case, the charge / discharge history information included in the charge / discharge data recorded by the data recording unit is in a state in which the amount of information is reduced by deleting or averaging a part of the overlapped portion. It is preferable.

  According to this microbattery, since the amount of charge / discharge history information can be reduced, the amount of charge / discharge data that can be enormous can be reduced as much as possible.

  The present invention is a power storage device configured by electrically connecting a plurality of the above-described micro batteries to the common power line, and controls charging and discharging of the battery module included in the micro battery. A charge / discharge control unit is included, and the charge / discharge control unit is included in the power storage device when discharging the battery module included in at least one of the micro batteries included in the power storage device in order to perform a predetermined test. When charging the battery module included in at least one microbattery included in the power storage device in order to charge the battery module included in at least one other microbattery and perform a predetermined test, the power storage device The at least one other microbattery included in Providing a power storage device, characterized in that discharging the Tsu Teri module.

  According to this power storage device, even when a test with a large amount of power charged and discharged by the battery module is performed, it is possible to suppress the influence on the outside of the power storage device (power fluctuation in the power line).

  In addition, the present invention provides at least one microbattery that is electrically connected to a common power line and constitutes one power storage device, and a data server that receives and records charge / discharge data transmitted from the microbattery. The microbattery includes a battery module that charges and discharges DC power, converts the DC power discharged by the battery module to output power to the power line, and outputs power input from the power line. An individual power conversion unit that converts the DC power to be charged by the battery module, a data acquisition unit that generates charge / discharge data including charge / discharge history information obtained by detecting charging and discharging of the battery module, and the data A data transmission unit for transmitting the charge / discharge data generated by the acquisition unit, and the battery module And the individual power conversion unit, the data acquisition unit, and the data transmission unit are integrated with each other and are detachable integrally with the power storage device. A micro battery system comprising: a data receiving unit that receives the charge / discharge data transmitted by a unit; and a database that records the charge / discharge data received by the data receiving unit.

  According to this microbattery system, as with the above-described microbattery, the configuration of the power storage device can be easily changed, and the deterioration state of the battery module included in the microbattery to be reused can be accurately estimated. It is possible.

  Further, in the micro battery system, when the data acquisition unit generates the charge / discharge data including temperature information obtained by measuring a temperature of a use environment of the micro battery provided with the data acquisition unit. ,preferable.

  According to this micro battery system, the deterioration state of the battery module is determined based on the temperature of the environment in which the micro battery is used, which is obtained by referring to the temperature information included in the charge / discharge data and has a strong correlation with the deterioration of the battery module. Further, it becomes possible to estimate with high accuracy.

  In the micro battery system, it is preferable that the data acquisition unit generates the charge / discharge data including information on a model of the battery module included in the micro battery provided with the data recording unit.

  According to this micro battery system, model information that is useful information for estimating the deterioration state of the battery module can be included in the charge / discharge data and recorded in the database. Therefore, when reusing the microbattery, the model information can be easily and reliably obtained.

  In the micro battery system, at least one of the power storage devices configured by electrically connecting a plurality of the micro batteries to the common power line is used for charging and discharging the battery module included in the micro battery. A charge / discharge control unit that controls the battery module, and the charge / discharge control unit discharges the battery module included in at least one of the micro batteries included in the power storage device in order to perform a predetermined test, Charging the battery module included in at least one other microbattery included in the power storage device and charging the battery module included in at least one microbattery included in the power storage device in order to perform a predetermined test The other power storage devices Both the discharging the battery module comprising one of said micro-battery, preferred.

  According to this microbattery system, even when a test with a large amount of power charged and discharged by the battery module is performed, it is possible to suppress the influence on the outside of the power storage device (power fluctuation in the power line).

  The micro battery system includes a plurality of the micro batteries, and the data acquisition unit generates the charge / discharge data including identification information for identifying the micro battery provided with the data acquisition unit. Is preferable.

  According to this micro battery system, since the micro battery system includes a plurality of micro batteries, even if charge / discharge data of a plurality of micro batteries are recorded in the database, each charge / discharge data can be obtained from which micro battery. Can be identified.

  The micro battery system further includes a user-provided data generating unit that generates user-provided data to be provided to a user using the charge / discharge data recorded in the database. In order for the user-provided data generating unit to generate the user-provided data to be provided to the user, at least the charge / discharge data obtained from the microbattery used by a third party other than the user is used. It is preferable to use it.

  According to this micro battery system, user-provided data using charge / discharge data widely including charge / discharge data of a micro battery used by a third party other than the user is generated. Therefore, it is possible to generate user-provided data including information with little deviation and close to truth based on charge / discharge data with a large number of parameters and generalization.

  A person who provides charge / discharge data using a microbattery is a “battery user”, and a person who provides user-provided data generated by the microbattery system using the charge / discharge data is a “user”. There is a distinction in this respect. However, there may be a person who is a “battery user” and a “user”.

  In the micro battery system, the user-provided data generation unit evaluates the charge / discharge performance of the battery module that is a specific model by using the charge / discharge data separately for each model of the battery module. Then, it is preferable to generate the user-provided data including the information of the evaluation result.

  According to this micro battery system, by evaluating the charge / discharge performance using the charge / discharge data separately for each model of the battery module, the evaluation result of the charge / discharge performance under the realistic use environment for each model of the battery module Can be easily obtained.

  Further, in the above micro battery system, the user-provided data generation unit distinguishes and uses the charge / discharge data for each model of the battery module, so that the use state and the charge / discharge performance for each model of the battery module are When the model and the use state of a specific used battery module are specified, the used battery module is used for the same model as the used battery module. It is preferable to estimate the charge / discharge performance of the second-hand battery module by checking the usage state of the second battery module and to generate the user-provided data including information on the estimation result.

  According to this micro battery system, even if it is a used battery module which does not record charging / discharging data (for example, only knowing about the period of use), the charging / discharging performance can be verified by checking the usage state against the deterioration criterion. Can be estimated with high accuracy.

  Further, in the micro battery system, the user-provided data generation unit evaluates charge / discharge performance for each model of the battery module by using the charge / discharge data separately for each model of the battery module, When a specific installation condition is specified, one or more battery module models satisfying the installation condition are selected based on the evaluated charge / discharge performance of each battery module model, and information on the selection result is displayed. Preferably, the user-provided data including is generated.

  According to this micro-battery system, based on the charge / discharge performance of the battery module provided in the actually installed power storage device, select and propose an appropriate battery module model that satisfies the specified installation conditions Can do.

  Further, in the micro battery system, the data acquisition unit generates the charge / discharge data including information on a model of the battery module that is a target for detecting charge and discharge, and the user-provided data generation unit includes: It is preferable to recognize the model of the battery module included in the microbattery from which the charge / discharge data is obtained based on the information on the model of the battery module included in the charge / discharge data.

  According to this micro battery system, the user-provided data generation unit can recognize the model of the battery module included in the micro battery from which the charge / discharge data is obtained only by referring to the charge / discharge data.

  Further, in the micro battery system, the user-provided data generation unit determines whether there is an abnormality in the micro battery by comparing the charge / discharge data of the plurality of micro batteries, and information on the determination result It is preferable that the user-provided data including

  According to this microbattery system, charge / discharge data of a plurality of microbatteries can be compared, so that an abnormality of the microbattery can be detected with high accuracy.

  Moreover, in said micro battery system, in the said charge / discharge history information contained in the said charge / discharge data which the said data acquisition part produces | generates, the part considered that it overlaps because predetermined conditions are satisfy | filled If present, the charge / discharge history information included in the charge / discharge data recorded by the database is in a state where the amount of information is reduced by deleting or averaging a part of the overlapped portion. It is preferable.

  According to this micro battery system, since the amount of charge / discharge history information can be reduced, the amount of charge / discharge data that can be enormous can be reduced as much as possible.

  The micro battery system further includes a battery user provided data generating unit that generates battery user provided data to be provided to a battery user using the micro battery, and the battery user provided data generation It is preferable that the unit uses at least the charge / discharge data obtained from the microbattery used by the battery user in order to generate the battery user provided data provided to the battery user.

  According to this micro battery system, it is possible to provide useful battery user data to the battery user. Therefore, it becomes possible to expect cooperation of provision of charge / discharge data by each battery user.

  In the micro battery system, at least one of the micro batteries represents a deterioration state of the battery module included in the micro battery included in the battery user provided data generated by the battery user provided data generation unit. It is preferable to provide a deterioration information display unit that displays deterioration information.

  According to this microbattery system, the deterioration state is displayed on the main body of the microbattery, so that the value is immediately grasped when a used microbattery is distributed. Therefore, it becomes possible to further promote the distribution of used micro batteries.

  The micro battery system further includes a market value evaluation unit that calculates the market value of the used micro battery or the used battery module, and generates market value data including information on the market value. The market value evaluation unit preferably calculates the market value of the microbattery or the battery module included in the microbattery based on at least the charge / discharge data obtained from the microbattery.

  According to this micro battery system, an appropriate market value can be set for a used micro battery or battery module. Therefore, it becomes possible to promote the distribution in the market for used microbatteries or battery modules (for example, a web auction in which individuals or merchants trade).

  The micro battery system may further include a charge / discharge data temporary recording unit that temporarily records the charge / discharge data, and the data transmission unit cannot transmit the charge / discharge data to the data reception unit. When the charging / discharging data temporary recording unit records the uncharged charging / discharging data, and then the data transmitting unit can transmit the charging / discharging data to the data receiving unit, It is preferable that the data transmission unit transmits the charge / discharge data recorded by the discharge data temporary recording unit to the data reception unit.

  According to the microbattery system, the charge / discharge data temporary recording unit is provided to record the uncharged charge / discharge data temporarily, so that even if there are few transmission opportunities for the charge / discharge data, the data acquisition unit Charge / discharge data can be reliably transmitted to the receiver

  In the above micro battery system, it is preferable that a plurality of micro batteries having different types of battery modules are included in the plurality of micro batteries constituting at least one power storage device. .

  According to this microbattery system, the microbattery having a similar use environment by configuring the same power storage device includes different types of battery modules. For this reason, it is possible to generate charge / discharge data including charge / discharge history information that represents a difference in charge / discharge performance depending on the type of battery module while suppressing a difference due to the use environment. That is, it becomes possible to perform an operation test and a charge / discharge performance evaluation test for each model of the battery module.

  According to the micro battery, the power storage device, and the micro battery system having the features described above, the configuration of the power storage device can be easily changed by integrating the micro battery with the battery module and the individual power conversion unit. become. Furthermore, by referring to the charge / discharge history information included in the recorded charge / discharge data, it is possible to accurately estimate the deterioration state of the battery module included in the micro battery to be reused. Therefore, it becomes possible to promote the use and distribution of the battery module.

The block diagram shown about an example of the structure of the micro battery which concerns on 1st Embodiment of this invention. The block diagram shown about an example of a structure of the data acquisition part shown in FIG. The block diagram shown about an example of a structure of the micro battery system which concerns on 2nd Embodiment of this invention. The block diagram shown about an example of a structure of the data acquisition part shown in FIG. The block diagram shown about an example of a structure of the data server shown in FIG. The block diagram shown about another example of the structure of the micro battery in the micro battery system which concerns on 2nd Embodiment of this invention.

<< First Embodiment >>
A first embodiment of the present invention will be described. 1st Embodiment of this invention is a micro battery which comprises one electrical storage apparatus electrically connected with respect to a common alternating current power line (power line).

  First, an example of the configuration of the microbattery according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the microbattery according to the first embodiment of the present invention.

  As shown in FIG. 1, the micro battery 1 includes a battery module 11, a micro inverter 12 (individual power conversion unit), a data acquisition unit 13, and a data recording unit 14. In FIG. 1, one power storage device B configured by a plurality of micro batteries that are electrically connected to the AC power line A is illustrated. In addition to the microbattery 1, the AC power line includes a load that consumes AC power, and a power generator that supplies AC power (for example, an inverter that converts DC power obtained by power generation into AC power and outputs it) May be connected, or may be connected to the system via a converter or the like.

  One microbattery 1 includes one battery module 11, one micro inverter 12, one data acquisition unit 13, and one data recording unit 14, and has a structure in which these are integrated. For example, the micro battery 1 has a structure in which the battery module 11, the micro inverter 12, the data acquisition unit 13, and the data recording unit 14 are integrated into one package (housing). Each microbattery 1 has a structure having a detachable connector such as a pin connector, and is detachable integrally with the power storage device B (particularly, the AC power line A). ing.

  The battery module 11 is configured by connecting at least one battery cell (unit cell) that charges and discharges DC power. The micro inverter 12 converts the DC power discharged from the battery module 11 into AC power and outputs the AC power to the AC power line A, and converts AC power input from the AC power line A into DC power charged by the battery module 11. Equipment.

  The micro inverter 12 includes a synchronous control device for monitoring the state of the AC power of the AC power line A and operating in synchronization with the AC power. Therefore, as illustrated in FIG. 1, even if a plurality of micro batteries 1 are electrically connected via the AC power line A, the battery module 11 of any micro battery 1 does not cause a phase shift of the AC power. Can be charged and discharged.

  The data acquisition unit 13 generates charge / discharge data including charge / discharge history information obtained by monitoring the charging and discharging of the battery module 11. Note that a part of the data acquisition unit 13 (for example, a charge / discharge detection unit described later) may be shared with a part of the micro inverter 12 or the battery module 11.

  Here, an example of the configuration of the data acquisition unit 13 will be described with reference to the drawings. FIG. 2 is a block diagram showing an example of the configuration of the data acquisition unit shown in FIG.

  As shown in FIG. 2, the data acquisition unit 13 includes a charge / discharge detection unit 131, a temperature measurement unit 132, and a charge / discharge data generation unit 133.

  The charge / discharge detection unit 131 includes, for example, a voltmeter and an ammeter, and generates charge / discharge history information by detecting whether or not the battery module 11 is charged and discharged and its size. For example, the charge / discharge detection unit 131 calculates the terminal voltage used to estimate the state of charge (SOC: State of charge) of the battery module 11 and the current value of the DC power that the battery module 11 charges and discharges. By detecting at predetermined time intervals, charge / discharge history information, which is time-series information, is generated.

  The charge / discharge history information is not limited to information on the magnitude of charging and discharging of the battery module 11, but may be information on the number of times of charging and discharging. However, the charge / discharge history information is preferably information that can accurately estimate the deterioration state of the battery module 11. For example, the charge / discharge history information includes information related to the charge state (for example, terminal voltage) of the battery module 11 and information related to the magnitude (for example, current value) of DC power charged and discharged by the battery module 11. It is preferable.

  The temperature measurement unit 132 includes, for example, a temperature sensor, and the temperature of the usage environment of the microbattery 1 including the data acquisition unit 13 (for example, the temperature inside or outside the package of the microbattery 1 or the battery module 11). Temperature information is generated. For example, the temperature measurement unit 132 generates temperature information that is time-series information by detecting the temperature of the environment in which the microbattery 1 is used at predetermined time intervals.

  The charge / discharge data generation unit 133 includes, for example, an arithmetic device such as a CPU (Central Processing Unit) and a storage device such as a semiconductor memory, and the charge / discharge history information generated by the charge / discharge detection unit 131 and the temperature measurement unit 132 generate the charge / discharge data generation unit 133. A process of generating charge / discharge data including temperature information is performed.

  Returning to FIG. The data recording unit 14 is configured by a recording device capable of recording data, such as a semiconductor memory, and records charge / discharge data generated by the data acquisition unit 13. Further, it is preferable that the data recording unit 14 also records data useful when the microbattery 1 is reused. For example, the data recording unit 14 may record model data related to the microbattery 1 in which the data recording unit 14 is provided.

  The model data includes at least model information of the battery module 11. The model information of the battery module 11 includes, for example, the manufacturer of the battery module 11, the model, the type of the battery cell, various specifications such as the nominal discharge capacity, the number of battery cells and the connection method, and basic characteristics provided by the manufacturer ( For example, information on the correlation between the number of charge / discharge cycles and the deterioration of the discharge capacity, the correlation between the temperature of the usage environment and the deterioration of the discharge capacity, etc., which are required by the manufacturer conducting an endurance test, etc. . These pieces of information are useful information for estimating the deterioration state of the battery module 11.

  Further, the model data may include model information of the micro inverter 12 as necessary. The model information of the micro inverter 12 is obtained by, for example, the manufacturer of the micro inverter 12, the model, various specifications such as a nominal conversion efficiency, and basic characteristics provided by the manufacturer (for example, the manufacturer performs an endurance test). The correlation between the period of use and the deterioration of the conversion efficiency, the correlation between the temperature of the use environment and the deterioration of the conversion efficiency, etc.). These pieces of information are useful information for estimating the deterioration state of the micro inverter 12.

  As shown in FIG. 1, the power storage device B includes a battery controller C (charge / discharge control unit) that controls the operation of each microbattery 1 constituting the power storage device B. The battery controller C is configured with an arithmetic device such as a CPU and a storage device such as a semiconductor memory, and according to a predetermined operation policy (for example, preferentially charging and discharging the battery module 11 that has not deteriorated). The timing which each battery module 11 charges and discharges is determined. Further, the battery controller C instructs the respective micro batteries 1 to charge and discharge wirelessly or by wire.

  As described above, the microbattery 1 according to the first embodiment of the present invention includes the battery module 11 and the microinverter 12, which are integrated with each other and are integrally attached to and detached from the power storage device B. It is free. Therefore, in the case where the power storage device B is configured by using one or a plurality of micro batteries 1, even if it becomes necessary to change the discharge capacity of the power storage device B later, the micro battery 1 that configures the power storage device B By simply increasing or decreasing the number, it is possible to increase or decrease both the discharge capacity and the inverter capacity of the entire power storage device B and maintain a state in which both are compatible. Therefore, the use of the microbattery 1 makes it easy to change the configuration of the power storage device B.

  Further, in the microbattery 1, the data recording unit 14 records charge / discharge data including charge / discharge history information that is an actual use history of the battery module. Therefore, it is possible to accurately estimate the deterioration state of the battery module 11 included in the micro battery 1 to be reused by referring to the charge / discharge history information. In particular, it is possible to predict future deterioration of the battery module 11 included in the used micro battery 1.

  Therefore, according to the microbattery 1 according to the first embodiment of the present invention, the configuration of the power storage device B can be easily changed, and the deterioration state of the used battery module 11 can be accurately estimated. 11 can be promoted and distributed. For example, the supplier of the micro battery 1 (battery module 11) leases or lends the micro battery 1 to the battery user under a condition according to the request for addition or return due to the convenience of the battery user, or in a deteriorated state. It is possible to prepare contracts under conditions where battery users can easily install micro batteries 1, such as contracts to transfer micro batteries 1 to battery users with special provisions of trade-in options (purchase guarantees) at appropriate prices become.

  Further, the deterioration of the battery module 11 has a strong correlation with the temperature of the environment in which the micro battery 1 is used (for example, the temperature of the battery module 11). Therefore, the deterioration state of the battery module 11 can be estimated with higher accuracy by referring to the temperature information included in the charge / discharge data.

  Furthermore, in the microbattery 1 according to the first embodiment of the present invention, various data used for estimating a deterioration state such as charge / discharge data is recorded in the data recording unit 14 provided in the microbattery 1. . In other words, when the microbattery 1 is reused, the microbattery 1 and various data are distributed together. Therefore, it is possible to make it possible for an arbitrary person who has received the micro battery 1 to estimate the deterioration state of the battery module 11 (and also the micro inverter 12).

  In addition, you may reuse only the battery module 11 which removed the microinverter 12, without reusing the used microbattery 1 as it is, or you may reuse the microbattery 1 which replaced the microinverter 12 with the new article etc. . Even with such a reuse method, since the deterioration state of the battery module 11 can be accurately estimated based on the charge / discharge data, there arises a problem that the battery module 11 becomes unusable immediately after reuse. Can be suppressed.

  However, when it is assumed that such a reuse method can be performed, it is preferable that the battery module 11 be detachable from the microbattery 1. Furthermore, from the viewpoint of preventing the data recording unit 14 that records the charge / discharge data used when estimating the deterioration state of the battery module 11 from being separated from the battery module 11 and easily lost, the battery module 11 and the data recording unit 14 are integrated so that the battery module 11 and the data recording unit 14 can be integrally attached to and detached from the micro battery 1 (when the micro inverter 12 is removed from the battery module 11, the data recording unit 14 remains on the battery module 11 side).

  In addition, after removing a used (used) microbattery 1 from one power storage device B and collecting it, a predetermined inspection device (for example, a battery module 11 is fully charged) before being attached to another power storage device B and reused. Inspecting the microbattery 1 using a device that automatically conducts actual measurement tests such as a discharge capacity measurement, a pulse overcharge test, a resistance measurement test, etc. Thus, the information on the deterioration state of the micro battery may be obtained, and the inspection data including the information may be recorded in the data recording unit 14. Further, at this time, the inspection apparatus reads out the charge / discharge data recorded in the data recording unit 14 of the micro battery 1 to be inspected, and refers to the charge / discharge history information and temperature information included in the charge / discharge data. Thus, the deterioration state of the battery module 11 may be estimated. Further, when the inspection apparatus performs such estimation, the inspection apparatus does not have to perform an actual test on the microbattery 1.

  As described above, by recording the inspection data in the data recording unit 14, it is possible to refer to the inspection data before and after the reuse, so that the deterioration state of the battery module 11 can be easily grasped. In addition, it is preferable that this inspection apparatus is configured not only to inspect the battery module 11 but also to inspect the entire micro battery 1 including the micro inverter 12. In this case, it is possible to estimate the overall deterioration state of the microbattery 1 before reuse, and it is also possible to replace a part where a defect is found.

  In addition, the battery modules 11 included in the respective micro batteries 1 measure discharge capacity by performing a predetermined test (for example, complete discharge from a fully charged state) separately from charging and discharging performed as normal operation of the power storage device B. Charging and discharging for a test to be performed, a pulse overcharge test, a resistance measurement test, etc.), and the data recording unit 14 may record charge / discharge data obtained thereby. By referring to the charge / discharge history information included in the charge / discharge data obtained by performing such a test, the deterioration state of the battery module 11 can be estimated with higher accuracy.

  In this case, when the battery module 11 included in the at least one microbattery 1 included in the power storage device B is discharged to perform a predetermined test, the other at least one microbattery 1 included in the power storage device B is included. It is preferable that the battery module 11 is charged. In this case, the electric power discharged from the battery module 11 performing the test is supplied to the AC power line A via the micro inverter 12, but the surplus power in the AC power line A generated thereby is generated by another micro battery. 1 is absorbed by charging of the battery module 11 included in 1.

  Similarly, when the battery module 11 included in at least one micro battery 1 included in the power storage device B is charged to perform a predetermined test, the battery included in at least one other micro battery 1 included in the power storage device B. It is preferable that the module 11 is discharged. In this case, the electric power charged by the battery module 11 performing the test is acquired from the AC power line A via the micro inverter 12. However, the insufficient power in the AC power line A generated by this is another micro battery. 1 is compensated for by the discharge of the battery module 11 included in 1.

  As described above, when charging and discharging of the battery module 11 are controlled, even if a test with a large amount of power charged and discharged by the battery module 11 is performed, the influence on the outside of the power storage device B (the AC power in the AC power line A) Fluctuation) can be suppressed. It should be noted that such charging and discharging control of the battery module 11 can be performed by the battery controller C. Further, it is preferable that the number of battery modules 11 to be charged or discharged for the test is equal to the number of other battery modules 11 that absorb or compensate for it.

  Further, the data acquisition unit 10 may not include the temperature measurement unit 132. That is, the temperature information may not be included in the charge / discharge data. However, the battery module 11 is greatly affected by the temperature of the use environment. Therefore, from the viewpoint of accurately estimating the deterioration state of the battery module 11, it is preferable that the charge / discharge data includes temperature information.

  Further, the data recording unit 14 may not record the model data including the model information of the micro battery 1. However, the model information of the microbattery 1 is useful information for estimating the deterioration state of the battery module 11. Therefore, in order to easily and surely obtain such useful model information when reusing the microbattery 1, when the model data including the model information is recorded in the data recording unit 14 together with the charge / discharge data, preferable. Further, when the model data is recorded in the data recording unit 14, if new model information becomes available, new model information is automatically or manually used by using wireless or wired communication means as soon as possible. It is preferable that new model data including the above is given to the data recording unit 14 so that the data recording unit 14 records the new model data.

  Further, by referring to the charge / discharge history information, temperature information, and model information, it is possible to estimate not only the deterioration state of the battery module 11 but also the deterioration state of the micro inverter 12.

<< Second Embodiment >>
A second embodiment of the present invention will be described. The second embodiment of the present invention is a micro battery system that combines a micro battery and a data server. Note that the microbattery used in the microbattery system according to the second embodiment of the present invention and the power storage device configured by connecting the microbattery are the microbattery 1 and power storage device described in the first embodiment. Mostly in common with B (see FIGS. 1 and 2). Therefore, in the following description, the description regarding the first embodiment described above is omitted as appropriate for the micro battery system according to the second embodiment of the present invention as long as there is no contradiction, and different parts from the first embodiment described above. This will be described in detail.

  First, an example of a configuration of a micro battery system according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing an example of the configuration of the microbattery according to the second embodiment of the present invention. Note that FIG. 3 illustrates the case where the micro battery system 10 includes a plurality of micro batteries 1X constituting a plurality of power storage devices BX.

  As shown in FIG. 3, the micro battery system 10 includes a micro battery 1 </ b> X and a data server 2. The microbattery 1X includes a battery module 11, a microinverter 12, a data acquisition unit 13X, and a data transmission unit 15.

  The microbattery system 10 according to the second embodiment of the present invention includes a data recording unit 14 and individually records charge / discharge data, and the microbattery 1 according to the first embodiment of the present invention (see FIG. 1). Unlike the above, charge / discharge data of the microbattery 1X is collectively recorded in the data server 2. Therefore, in the micro battery system 10 according to the second embodiment of the present invention, each micro battery 1 </ b> X includes a data transmission unit 15 instead of the data recording unit 14.

  The data transmission unit 15 is configured by a communication device that receives data wirelessly or by wire, for example, and charges / discharges data generated by the data acquisition unit 13X at a predetermined timing (for example, every few minutes, every few hours, every few days, etc.). To the data server 2. The data transmission unit 15 and the data server 2 may directly transmit / receive charge / discharge data wirelessly or by wire. However, if the charge / discharge data is transmitted / received via a network such as the Internet, the micro battery Even if the distance between the installation location of 1X and the installation location of the data server 2 is greatly separated, charge / discharge data can be easily transmitted and received, which is preferable.

  When the data transmission unit 15 transmits charge / discharge data via a network, it is possible to simplify the configuration of wiring and devices by wirelessly connecting to an access point connectable to the network and transmitting the charge / discharge data. ,preferable. In addition, the data transmission unit 15 may connect to an access point that is fixedly installed indoors or the like to transmit charge / discharge data. However, if connection to such an access point is difficult, Charging / discharging data may be transmitted using an individual mobile terminal (for example, a smartphone) using the module 1X as an access point.

  An example of the configuration of the data acquisition unit 13X will be described with reference to the drawings. FIG. 4 is a block diagram illustrating an example of the configuration of the data acquisition unit illustrated in FIG.

  As shown in FIG. 4, the data acquisition unit 13 </ b> X includes a charge / discharge detection unit 131, a temperature measurement unit 132, a charge / discharge data generation unit 133 </ b> X, and an additional information recording unit 134.

  The additional information recording unit 134 is composed of a recording device capable of recording data, such as a semiconductor memory, and records identification information such as ID (Identification) of the microbattery 1X and model information of the microbattery 1X. The identification information of the microbattery 1X is used, for example, in the data server 2 to identify which microbattery 1X is the received charge / discharge data. The model information of the microbattery 1X is the same as the model information of the microbattery 1 described in the first embodiment.

  The charge / discharge data generation unit 133X includes, for example, an arithmetic device such as a CPU and a storage device such as a semiconductor memory. The charge / discharge history information generated by the charge / discharge detection unit 131, the temperature information generated by the temperature measurement unit 132, and the addition A process of generating charge / discharge data including identification information and model information recorded by the information recording unit 134 is performed.

  Next, an example of the configuration of the data server 2 will be described with reference to the drawings. FIG. 5 is a block diagram showing an example of the configuration of the data server shown in FIG.

  As shown in FIG. 5, the data server 2 includes a data receiving unit 21, a database 22, a data processing unit 23, a data output unit 24, and a bus 25.

  The data receiving unit 21 includes a communication device that receives data wirelessly or by wire, for example, and receives charge / discharge data transmitted by the data acquisition unit 10.

  The database 22 is composed of a recording device capable of recording large-capacity data, such as a hard disk, and records charge / discharge data received by the data receiving unit 21. The database 22 can record the charge / discharge data received by the data receiving unit 21 as it is, and can also record the charge / discharge data processed by the data processing unit 23.

  For example, the data processing unit 23 includes an arithmetic device such as a CPU and a storage device such as a semiconductor memory. The data processing unit 23 (corresponding to the user-provided data generation unit) performs processing for generating user-provided data to be provided to the user using the charge / discharge data read from the database 22. In addition, the process which the data processing part 23 produces | generates user provision data is demonstrated in <utilization of charging / discharging data> mentioned later.

  The data output unit 24 is configured by a communication device that transmits data wirelessly or by wire, for example, and transmits the user-provided data generated by the data processing unit 23 to the user. Note that the data output unit 24 and the data reception unit 21 may be configured by a common communication device. In addition, the data output unit 24 may be configured as a display device that displays user-provided data as characters or images, or may be configured as a printing device that prints user-provided data as characters or images.

  The bus 25 is a data communication path used when the data receiving unit 21, the database 22, the data processing unit 23, and the data output unit 24 exchange various data.

  The microbattery system 10 according to the second embodiment of the present invention is a microbattery according to the first embodiment of the present invention in that charge / discharge data obtained from each microbattery 1X is recorded together in the database 22. 1 (see FIG. 1 and FIG. 2). However, in the micro battery system 10 according to the second embodiment of the present invention, since the charge / discharge history information, model information, and temperature information of each micro battery 1X can be obtained, the micro battery 1 according to the first embodiment of the present invention. The same effect as (see FIG. 1 and FIG. 2) can be obtained.

  The data acquisition unit 10 may not include the additional information recording unit 134. Further, the charge / discharge data may not include identification information or model information. However, when the micro battery system 10 includes a plurality of micro batteries 1X, it is necessary to be able to identify which micro battery 1X the charge / discharge data recorded in the database 22 is the charge / discharge data obtained from. There is. Therefore, it is preferable that the data acquisition unit 10 includes the additional information recording unit 134 that records the identification information and that the charge / discharge data includes the identification information.

  In addition, the database 22 may record table data in which identification information such as micro battery IDs and model information are associated with each other so that the model information is not included in the charge / discharge data. In this case, the model information can be recognized by referring to the table data based on the identification information included in the charge / discharge data, so that it is not necessary to include the model information in the charge / discharge data.

<Utilization of charge / discharge data>
In the micro battery system 10 according to the second embodiment of the present invention, the charge / discharge data of the plurality of micro batteries 1X can be recorded in the database 22. This charge / discharge data is data with high utility value that can be used for purposes other than estimating the deterioration state of the battery module 11. Therefore, in the micro battery system 10 according to the second embodiment of the present invention, various processes are performed using the charge / discharge data recorded in the database 22. Hereinafter, this process will be described.

  Hereinafter, a person who provides charge / discharge data using the micro battery 1X (power storage device BX) is referred to as a “battery user” and provides user-provided data generated by the micro battery system 10 using the charge / discharge data. The other party is called a “user” to distinguish between the two. However, there may be a person who is a “battery user” and a “user”.

  The data processing unit 23 uses the charge / discharge data recorded in the database 22 to generate user provided data. At this time, the data processing unit 23 generates user-provided data using at least charge / discharge data obtained from the microbattery 1X used by a third party other than the user. That is, the user-provided data generated by the data processing unit 23 is data different from data for notifying the individual battery users of the charge / discharge status of the microbattery 1X used by the battery users.

  For example, the data processing unit 23 selectively extracts data that matches the user's request from the charge / discharge data recorded in the database 22 and uses the extracted charge / discharge data as user-provided data. In addition, for example, the data processing unit 23 selectively extracts the charge / discharge data recorded in the database 22 that matches the user's request, and the charge / discharge history information included in the extracted charge / discharge data. The user-provided data is generated by performing predetermined processing (for example, statistical processing) on.

  At this time, the data processing unit 23 identifies the microbattery 1X from which the charge / discharge data is obtained by referring to the identification information included in the charge / discharge data. Further, the data processing unit 23 refers to the model information included in the charge / discharge data, thereby recognizing the model of the battery module 11 included in the micro battery 1X from which the charge / discharge data is obtained. Further, the data processing unit 23 recognizes the temperature of the use environment in the microbattery 1X from which the charge / discharge data is obtained by referring to the temperature information included in the charge / discharge data.

  The data processing unit 23 generates various user-provided data depending on the user. For example, the data processing unit 23 may charge / discharge performance of the battery module 11 such as a battery module 11 (battery cell) or a power storage device manufacturer or a design / construction company (for example, discharge capacity, its tendency to deteriorate, User-provided data including information related to the charge / discharge performance of the battery module 11 is generated for a user who is interested in the voltage drop characteristics of the battery module 11. Specifically, for example, the data processing unit 23 distinguishes and uses charge / discharge data for each model of the battery module 11 (for example, selectively uses only the charge / discharge data of the battery module 11 that is a specific model, or specifies The charge / discharge data of the battery module 11 which is a specific model and the charge / discharge data of the battery module 11 which is at least one model for comparison). Then, user-provided data including the evaluation result is generated. Thus, by evaluating the charge / discharge performance by distinguishing and using the charge / discharge data for each model of the battery module 11, the evaluation result of the charge / discharge performance under the realistic use environment for each model of the battery module 11 is obtained. Can be easily obtained.

  In addition, for example, the data processing unit 23 generates user-provided data including information related to the abnormality of the device for a user who is interested in the abnormality of the device such as a maintenance company. Specifically, for example, the data processing unit 23 compares charge / discharge data obtained from a plurality of microbatteries 1X (for example, whether the power storage devices that are configured are the same, or whether the temperature of the model or use environment is the same). By comparing the charge / discharge data of a plurality of microbatteries 1X, the presence / absence of abnormality of the microbattery 1X is determined, and user-provided data including information of the determination result is generated. Thus, when charging / discharging data of a plurality of micro batteries 1X are compared, an abnormality of the micro battery 1X can be detected with high accuracy.

  In addition, for example, the data processing unit 23 provides a user who includes information regarding the installation method of the power storage device suitable for a specific installation condition to a user who is interested in the installation method of the power storage device such as a sales / sales company. Generate offer data. Specifically, for example, the data processing unit 23 specifies the installation conditions (for example, necessary) of the power storage device in the target person who is considering the introduction of the power storage device specified by the input of the sales / sales company or the operator of the data server 2. Recognizable discharge capacity, installation space, budget, etc.). Further, the data processing unit 23 evaluates the charge / discharge performance for each model of the battery module by using the charge / discharge data separately for each model of the battery module. The data processing unit 23 then selects one or a plurality of battery module models that satisfy the specified installation conditions (particularly, a battery required to satisfy the installation conditions) based on the charge / discharge performance of the battery modules for each evaluated model. Select the model and number of modules), and generate user-provided data including the selection results. Accordingly, it is possible to select and propose an appropriate battery module model that satisfies the specified installation conditions, based on the charge / discharge performance of the battery module included in the actually installed power storage device.

  Further, for example, the data processing unit 23 uses information including information on the charge / discharge performance of a specific used battery module for a user who is interested in the remaining charge / discharge performance of a used battery module such as a reuse company. User-provided data. Specifically, for example, the data processing unit 23 uses the charge / discharge data separately for each model of the battery module, thereby generating a deterioration determination standard that represents the relationship between the use state and the charge / discharge performance for each model of the battery module. . For example, the degradation criterion is a statistical process of charge / discharge data for each model of battery module to estimate the relationship between the usage state such as the period of use and the number of charge / discharge cycles and the charge / discharge performance that deteriorates accordingly. It is expressed using an average value, an error range, and the like. Further, the data processing unit 23 recognizes the model and usage state of a specific used battery module specified by the input of the reuse company or the operator of the data server 2. Then, the data processing unit 23 estimates the charge / discharge performance of the used battery module by checking the usage state of the used battery module against the deterioration determination standard of the same model as the used battery module, User-provided data including the estimation result is generated. As a result, even for used battery modules that do not record charge / discharge data (for example, only the period of use is known), the charge / discharge performance is accurately estimated by checking the use state against the deterioration criterion. be able to. In addition, although the use state of the entire used power storage device can be understood, if the individual use states of the plurality of battery modules constituting the power storage device are not known, the use states of the battery modules constituting the power storage device are equal. Assuming that, the individual use state of the battery module may be obtained. Further, the deterioration criterion is also valuable as an evaluation result of charge / discharge performance of a battery module that is a specific model. For this reason, the data processing unit 23 may generate user-provided data including a deterioration criterion.

  As described above, in the micro battery system 10 according to the embodiment of the present invention, the charge / discharge data recorded in the database 22 can be used effectively as user-provided data.

  In particular, in the micro battery system 10, user-provided data using charge / discharge data widely including the charge / discharge data of the battery module used by a third party other than the user is generated. Therefore, it is possible to generate user-provided data including information with little deviation and close to truth based on charge / discharge data with a large number of parameters and generalization.

  Note that the data processing unit 23 (corresponding to the battery user-provided data generation unit) generates not only the user-provided data to be provided to the user but also the battery user-provided data to be provided to the battery user. May be. For example, since the battery user is considered to be interested in the battery module, micro battery, and power storage device used by the user, the data processing unit 23 is at least charged from the micro battery used by the battery user. Battery user-provided data is generated using the discharge data. Specifically, for example, the data processing unit 23 provides battery user-provided data including information on the state of charge (SOC) of the battery module provided in the microbattery used by the battery user and the determination result of whether there is an abnormality in the microbattery. It may be generated. The battery user-provided data is also provided to the battery user via the data output unit 24 in the same manner as the user-provided data.

  In this way, by providing useful battery user-provided data to battery users, it becomes possible to expect cooperation in providing charge / discharge data by each battery user.

<< Deformation, etc. >>
[1] In the micro battery system 10 according to the second embodiment of the present invention, when the data transmission unit 15 and the data server 2 (data reception unit 21) transmit / receive charge / discharge data via a network such as the Internet, the data The transmitter 15 cannot communicate with an access point (including a personal portable terminal), and a situation in which charge / discharge data is not transmitted from the data transmitter 15 to the data receiver 21 is likely to occur. Therefore, the configuration of the microbattery may be changed as shown in FIG. FIG. 6 is a block diagram showing another example of the configuration of the micro battery in the micro battery system according to the second embodiment of the present invention.

  A microbattery 1Y shown in FIG. 6 includes a charge / discharge data temporary recording unit 16 in addition to the above-described microbattery 1X (see FIG. 3). The charge / discharge data temporary recording unit 16 is configured by a recording device capable of recording data, such as a semiconductor memory. The charge / discharge data temporary recording unit 16 transmits the charge / discharge data that the data transmission unit 15 could not transmit to the data reception unit 21, and then the data transmission unit 15 transmits the charge / discharge data to the data reception unit 21. Record temporarily until you can. In addition, you may comprise the additional information recording part 134 and the charging / discharging data temporary recording part 16 with a common recording device.

  As described above, even if the micro battery 1Y includes the charge / discharge data temporary recording unit 16 and is configured to be able to temporarily record untransmitted charge / discharge data, even if there are few transmission opportunities for the charge / discharge data, Charge / discharge data can be reliably transmitted from the data transmission unit 15 to the data reception unit 21.

[2] In the micro battery system 10 according to the second embodiment of the present invention, all the micro batteries 1X constituting all the power storage devices BX may include the same type of battery module 11, but at least one power storage. You may comprise so that the several microbattery 1X from which the model of the battery module 11 with which the apparatus BX comprises the different model of the battery module 11 with which it comprises may be contained is contained.

  In this microbattery system, the microbattery 1X having a similar use environment by configuring the same power storage device BX includes different types of battery modules 11. Therefore, it is possible to generate charge / discharge data including charge / discharge history information that represents a difference in charge / discharge performance depending on the model of the battery module 11 while suppressing a difference due to the use environment. That is, an operation test and a charge / discharge performance evaluation test for each model of the battery module 11 can be performed.

[3] In the microbattery 1 according to the first embodiment of the present invention and the microbattery system 10 according to the second embodiment of the present invention, charge / discharge history information and temperature information are generated one after another. Will be enormous. Therefore, it is preferable to reduce the information amount of these pieces of information and reduce the data amount of charge / discharge data recorded by the data recording unit 14 and the database 22 as much as possible.

  Therefore, for example, in the charge / discharge history information included in the charge / discharge data generated by the data acquisition units 13 and 13X, a portion that is considered to be duplicated because a predetermined condition is satisfied (for example, charge / discharge history) In the case where the information is time-series information representing temporal changes in current or voltage, this overlaps when there is a portion where the fluctuation range of a plurality of measurement points continuous in time is equal to or less than a predetermined value) It is preferable to reduce the amount of charge / discharge history information included in the charge / discharge data recorded by the data recording unit by performing a process of deleting or averaging a part of the portion. This process can be performed by, for example, the data processing unit 23 or the charge / discharge data generation units 133 and 133X in the data acquisition unit 10. Further, the amount of information about the temperature information can be reduced similarly to the charge / discharge history information.

[4] The first embodiment and the second embodiment of the present invention may be implemented in combination. That is, the microbattery includes both the data recording unit 14 (see FIG. 1) and the data transmission unit 15 (see FIG. 3). The data recording unit 14 records various data such as charge / discharge data, and the data server 2 The database 22 (see FIGS. 3 and 5) provided may also be configured to record charge / discharge data.

[5] In the microbattery 1 according to the first embodiment of the present invention and the microbattery system 10 according to the second embodiment of the present invention, in FIGS. 1 and 3, the power storage devices B and BX including the battery controller C are provided. Although illustrated, the power storage devices B and BX may be configured not to include the battery controller C. For example, the charging and discharging of each battery module 11 may be controlled by communication between the micro batteries 1 and 1X (in particular, a control device built in the battery module 11 and the micro inverter 12). In this case, each of the micro batteries 1 and 1X configuring the power storage devices B and BX includes a charge / discharge control unit that replaces the battery controller C.

[6] In the microbattery 1 according to the first embodiment of the present invention and the microbattery system 10 according to the second embodiment of the present invention, the used microbatteries 1 and 1X are reused multiple times as long as they can be used. It is possible. For example, a business operator who collects and reuses the used microbattery 1 or 1X can use the collected microbattery 1 or 1X by itself and reuse it thereafter. However, even in the case where the microbattery 1 or 1X is used in such a situation, it is preferable that the deterioration state of the battery module 11 can be accurately grasped by continuing to record the charge / discharge data.

[7] In the microbattery 1 according to the first embodiment of the present invention and the microbattery system 10 according to the second embodiment of the present invention, in FIG. 1 and FIG. 3, the respective microbatteries constituting the power storage devices B and BX. 1, 1X includes a micro inverter 12 and is connected to a common AC power line A, but may include a micro converter (individual power conversion unit) and be connected to a common DC power line (power line). . In addition to the micro batteries 1 and 1X, the DC power line may be connected to a load that consumes DC power, a power generation device that supplies DC power (for example, a solar cell), an inverter, or the like. It may be connected to the system via

  Moreover, the micro batteries 1 and 1X may include both the micro inverter 12 and the micro converter, and may be configured to selectively input / output AC power and DC power.

[8] In the microbattery system 10 according to the second embodiment of the present invention, the data processing unit 23 (market value evaluation unit) uses the microbattery 1X or the battery module 11 based on the charge / discharge data recorded in the database 22. Market value data including information on the market value may be generated. The market value is, for example, a transaction price (trade price).

  For example, the data processing unit 23 acquires the transaction price of the new micro battery 1X or the new battery module 11 via a network such as the Internet. Furthermore, the data processing unit 23 estimates the deterioration state of the microbattery 1X or the battery module 11 included in the microbattery 1X based on the charge / discharge data obtained from the used microbattery 1X, and the microbattery or battery The market value of the used micro battery 1X or the used battery module 11 is calculated by reducing the transaction price of a new module 11 according to the deterioration state.

  In the micro battery system 10, an appropriate market value can be set for the used micro battery 1X or the battery module 11. Therefore, it is possible to promote the distribution of the used microbattery 1X or the used battery module 11 in the transaction market (for example, a web auction in which an individual or a trader performs a transaction).

  The data server 2 receives a sale instruction for the used microbattery 1X or the used battery module 11 by the battery user, and the data processing unit 23 receives the sale instruction and generates market value data. The market value data may be transmitted to a web server that operates a web auction. Furthermore, in this case, if the battery user continues to use the microbattery 1X after issuing a sale instruction, the data processing unit 23 takes a new charge / discharge data recorded in the database 22 into consideration. Market value data may be generated and re-sent to the web server that operates the web auction to update the market value (transaction price).

  Further, the microbattery 1 according to the first embodiment of the present invention can be traded in the trading market by calculating the market value by the same method as described above. However, since market values are calculated based on data such as charge / discharge data, model data, and inspection data recorded in the data recording unit 14, the market value of the data server 2 can be calculated from the data. It is necessary to input to a predetermined server (for example, a battery user reads out the data from the micro battery 1 and transmits it to the server).

[9] In the microbattery system 10 according to the second embodiment of the present invention, the microbattery 1X includes a deterioration information display unit including a display device such as a liquid crystal display device and a recording device such as a semiconductor memory, The deterioration information display unit may display deterioration information indicating the deterioration state of the battery module 11.

  The deterioration information displayed on the display unit is, for example, the current deteriorated discharge capacity (remaining discharge capacity) of the battery module 11 or the market value described in [8] above. For example, the data processing unit 23 generates battery user-provided data including the deterioration information, and the micro battery 1X receives the battery user-provided data, or the battery user transmits the battery user-provided data to the micro battery. The deterioration information display unit displays the deterioration information by giving to 1X.

  In the microbattery system 10, the deterioration state is displayed on the main body of the microbattery 1X, so that the value is immediately grasped when the used microbattery 1X is distributed. Therefore, it becomes possible to further promote the distribution of the used microbattery 1X.

  It is also possible to distribute the battery module 11 separately from the microbattery 1X. However, assuming that such a situation occurs, the battery module 11 and the deterioration information display unit are integrated, so that the battery module 11 and the deterioration information display unit can be integrally attached to and detached from the micro battery 1X. It is preferable to be configured as follows.

  Moreover, also about the micro battery 1 which concerns on 1st Embodiment of this invention, it is possible to display deterioration information on a main body as a structure provided with a deterioration information display part similarly to the above. However, since degradation information is generated based on data such as charge / discharge data, model data, and inspection data recorded in the data recording unit 14, degradation information such as the data server 2 can be generated from the data. It is necessary to input to a predetermined server (for example, a battery user reads out the data from the micro battery 1 and transmits it to the server).

  In addition, the microbattery 1 according to the first embodiment of the present invention includes an arithmetic device such as a CPU and a storage device such as a semiconductor memory, and generates deterioration information based on data recorded in the data recording unit 14. A degradation information generation unit may be provided. In this case, the micro battery 1 can generate and display deterioration information by itself.

[10] In the microbattery 1 according to the first embodiment of the present invention and the microbattery system 10 according to the second embodiment of the present invention, the data recording unit 14 (see FIG. 1) and the database 22 (see FIG. 5) record. The data to be used must be fair data that has not been tampered with. Therefore, the data recorded by the data recording unit 14 and the database 22 is preferably encrypted by a predetermined encryption method. The data encryption can be performed by, for example, the charge / discharge data generation units 133 and 133X (see FIGS. 2 and 4) and the data processing unit 23 (see FIG. 5).

  INDUSTRIAL APPLICABILITY The present invention can be used for a micro battery including a battery module that charges and discharges DC power, a power storage device including the micro battery, and a micro battery system.

1, 1X, 1Y: Micro battery 10: Micro battery system 11: Battery module 12: Micro inverter (individual power conversion unit)
13, 13X: Data acquisition unit 131: Charge / discharge detection unit 132: Temperature measurement unit 133, 133X: Charge / discharge data generation unit 14: Data recording unit 15: Data transmission unit 16: Charge / discharge data temporary recording unit 2: Data server 21 : Data reception unit 22: Database 23: Data processing unit (user-provided data generation unit, battery user-provided data generation unit, market value evaluation unit)
24: Data output unit 25: Bus A: AC power line (power line)
B, BX: Power storage device C: Battery controller

In the micro battery system, it is preferable that the data acquisition unit generates the charge / discharge data including information on a model of the battery module included in the micro battery provided with the data acquisition unit.

Claims (24)

A microbattery that is electrically connected to a common power line to form one power storage device,
A battery module for charging and discharging DC power; and
An individual power converter that converts DC power discharged by the battery module and outputs power to the power line, and converts power input from the power line to DC power charged by the battery module;
A data acquisition unit that generates charge / discharge data including charge / discharge history information obtained by detecting charge and discharge of the battery module;
A data recording unit for recording the charge / discharge data,
The microbattery characterized in that the battery module, the individual power conversion unit, the data acquisition unit, and the data recording unit are integrated and detachable integrally with the power storage device.   The said data acquisition part produces | generates the said charging / discharging data containing the temperature information obtained by measuring the temperature of the use environment of the said microbattery with which the said data acquisition part is provided. The microbattery described.   3. The micro of claim 1, wherein the data recording unit records model data including information on a model of the battery module included in the micro battery provided with the data recording unit. Battery.   The microbattery according to any one of claims 1 to 3, wherein the battery module and the data recording unit are detachable integrally with the microbattery.   It is obtained by inspecting the microbattery by a predetermined inspection device in the data recording unit provided in the used microbattery after being removed from the power storage device and before being attached to another power storage device. The microbattery according to any one of claims 1 to 4, wherein inspection data including information on a deterioration state of the microbattery before reuse is recorded.   When the charge / discharge history information included in the charge / discharge data generated by the data acquisition unit includes a portion that is considered to be duplicated because a predetermined condition is satisfied, the data recording unit The charge / discharge history information included in the charge / discharge data to be recorded is in a state in which the amount of information is reduced by deleting or averaging a part of the overlapping portion. Item 6. The microbattery according to any one of Items 1 to 5. A power storage device configured by electrically connecting a plurality of the microbatteries according to any one of claims 1 to 6 to the common power line,
A charge / discharge control unit that controls charging and discharging of the battery module included in the microbattery;
The charge / discharge control unit
When discharging the battery module included in at least one microbattery included in the power storage device in order to perform a predetermined test, the battery module included in at least one other microbattery included in the power storage device Let it charge,
In order to perform a predetermined test, when charging the battery module included in at least one microbattery included in the power storage device, the battery module included in at least one other microbattery included in the power storage device A power storage device that is discharged. Comprising at least one microbattery that is electrically connected to a common power line and constitutes one power storage device, and a data server that receives and records charge / discharge data transmitted from the microbattery,
The microbattery is
A battery module for charging and discharging DC power; and
An individual power converter that converts DC power discharged by the battery module and outputs power to the power line, and converts power input from the power line to DC power charged by the battery module;
A data acquisition unit that generates charge / discharge data including charge / discharge history information obtained by detecting charge and discharge of the battery module;
A data transmission unit that transmits the charge / discharge data generated by the data acquisition unit,
The battery module, the individual power conversion unit, the data acquisition unit, and the data transmission unit are integrated, and are detachable integrally with the power storage device,
The data server is
A data receiver for receiving the charge / discharge data transmitted by the data transmitter;
And a database that records the charge / discharge data received by the data receiving unit.   The said data acquisition part produces | generates the said charging / discharging data containing the temperature information obtained by measuring the temperature of the use environment of the said microbattery with which the said data acquisition part is provided. The described micro battery system.   10. The micro of claim 8, wherein the data acquisition unit generates the charge / discharge data including information on a model of the battery module included in the microbattery provided with the data recording unit. Battery system. At least one of the power storage devices configured by electrically connecting a plurality of the micro batteries to the common power line includes a charge / discharge control unit that controls charging and discharging of the battery module included in the micro battery. And
The charge / discharge control unit
When discharging the battery module included in at least one microbattery included in the power storage device in order to perform a predetermined test, the battery module included in at least one other microbattery included in the power storage device Let it charge,
In order to perform a predetermined test, when charging the battery module included in at least one microbattery included in the power storage device, the battery module included in at least one other microbattery included in the power storage device The micro battery system according to claim 8, wherein the micro battery system is discharged. A plurality of the microbatteries;
The said data acquisition part produces | generates and transmits the said charging / discharging data containing the identification information for identifying the said micro battery with which the said data acquisition part is provided, The any one of Claims 8-11 characterized by the above-mentioned. 2. The micro battery system according to item 1. A user-provided data generating unit that generates user-provided data for providing to the user using the charge / discharge data recorded in the database, further comprising:
The charge / discharge data obtained from at least the microbattery used by a third party other than the user in order for the user-provided data generation unit to generate the user-provided data to be provided to the user. The micro battery system according to claim 12, wherein:   The user-provided data generation unit evaluates the charge / discharge performance of the battery module that is a specific model by using the charge / discharge data separately for each model of the battery module, and includes information on the evaluation result The micro battery system according to claim 13, wherein the user-provided data is generated. The user-provided data generation unit
By using the charge / discharge data separately for each model of the battery module, it generates a degradation criterion that represents the relationship between the usage state and the charge / discharge performance for each model of the battery module,
When the model and usage status of a specific used battery module are specified, the used status of the used battery module is checked against the degradation criteria of the same model as the used battery module. The microbattery system according to claim 13 or 14, wherein charge / discharge performance of the battery module is estimated, and the user-provided data including information of the estimation result is generated. The user-provided data generation unit
By using the charge / discharge data separately for each model of the battery module, the charge / discharge performance is evaluated for each model of the battery module,
When a specific installation condition is specified, one or more battery module models satisfying the installation condition are selected based on the evaluated charge / discharge performance of each battery module model, and information on the selection result is displayed. The micro battery system according to claim 13, wherein the user-provided data is generated. The data acquisition unit generates the charge / discharge data including information on a model of the battery module that is a target for detecting charge and discharge,
The user-provided data generation unit recognizes a model of the battery module included in the micro battery from which the charge / discharge data is obtained based on information on the model of the battery module included in the charge / discharge data. The microbattery system according to any one of claims 13 to 16, characterized in.   The user-provided data generation unit determines whether the microbattery is abnormal by comparing the charge / discharge data of the plurality of micro-batteries, and generates the user-provided data including information on the determination result The micro battery system according to any one of claims 13 to 17, wherein   When the charge / discharge history information included in the charge / discharge data generated by the data acquisition unit includes a portion that is considered to be duplicated because a predetermined condition is satisfied, the database records it. 13. The charge / discharge history information included in the charge / discharge data is in a state in which the amount of information is reduced by deleting or averaging a part of the overlapping portion. The micro battery system according to any one of -18. A battery user-provided data generation unit for generating battery user-provided data for providing to a battery user using the microbattery;
The battery user provided data generation unit generates at least the charge / discharge data obtained from the micro battery used by the battery user in order to generate the battery user provided data provided to the battery user. The microbattery system according to any one of claims 12 to 19, wherein the microbattery system is used.   A degradation information display unit that displays degradation information representing a degradation state of the battery module included in the microbattery included in the battery user provision data generated by the battery user provision data generation unit, at least one of the microbatteries. The micro battery system according to claim 20, comprising: A market value evaluation unit that calculates the market value of the used microbattery or the used battery module and generates market value data including information on the market value;
The market value evaluation unit calculates the market value of the microbattery or the battery module included in the microbattery based on at least the charge / discharge data obtained from the microbattery. The micro battery system according to any one of -21. A charge / discharge data temporary recording unit for temporarily recording the charge / discharge data;
When the data transmission unit cannot transmit the charge / discharge data to the data reception unit, the charge / discharge data temporary recording unit records the untransmitted charge / discharge data, and then the data transmission unit When it becomes possible to transmit the charge / discharge data to the data receiving unit, the data transmitting unit transmits the charge / discharge data recorded by the charge / discharge data temporary recording unit to the data receiving unit. The micro battery system according to any one of claims 8 to 22. The plurality of microbatteries having different types of the battery modules provided therein are included in the plurality of microbatteries constituting at least one power storage device. The micro battery system according to claim 1.

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