JP6137478B2 - Battery module usage history information collection system, battery module usage history information collection device, and battery module usage history information collection method - Google Patents

Description

  The present invention relates to a technique for collecting battery module usage history information in a power supply system using a battery module.

  Renewable solar power generation using secondary battery modules such as lithium ion batteries and nickel metal hydride batteries for countries and regions such as emerging countries that do not have sufficient power infrastructure for general consumers A power supply system that constructs a power supply infrastructure using energy is considered.

  When power supply or billing is performed using battery modules that can be charged / discharged in various places, it is necessary to collect battery module usage history information. That is, battery module usage history information is required to estimate the charge / discharge status, remaining life, location, usage environment, etc. of the battery module, and to perform optimal charge / discharge control, life management, recovery, recycling, failure cause estimation, etc. It becomes. In particular, in secondary batteries with high power density such as lithium ion batteries, charge / discharge control is important for extending battery performance and ensuring safety, and thorough collection and recycling for securing resources and safety. This is very important. In addition, in charging for the provision and use of power, it is necessary to know who has charged and discharged how much power.

  It is also useful to collect battery module usage history information in order to promote standardization of battery modules. Currently, charge / discharge control of secondary batteries is performed in units of devices that perform charge / discharge. Although a technical mechanism that supports the collection and recycling of secondary batteries is recognized, it has not been realized. In a high power density secondary battery such as a lithium ion battery, the battery module is not sufficiently standardized, and there are restrictions on using the battery module in combination for various purposes.

  In the future, it is expected that battery modules with high power density will be standardized like primary batteries and nickel metal hydride batteries. However, standardization requires battery module performance, life extension, and safety assurance. It is assumed that charging / discharging control and a mechanism for collecting battery modules are necessary on the premise. Even in realizing such a mechanism, it is important to acquire log information such as charge / discharge history of the battery module and charge / discharge environment information.

JP 2007-141464 A

  As described above, when power supply or charging is performed using battery modules that can be charged / discharged in various places, it is necessary to collect battery module usage history information. It is difficult to collect information without omission. That is, in order to collect battery module usage history information, it is necessary to collect log information at the time of charging / discharging of the battery module and transmit the log information to the center side using communication means. However, the location where the battery module is charged and discharged changes relatively frequently, and it is assumed that log information is lost due to a communication failure, loss of a memory storing the log information, and the like.

  In Patent Document 1, for the purpose of preventing the loss of use history information and promoting the reuse of the battery module, the use history information is stored in the storage means of the battery module instead of the storage means conventionally provided in the battery controller. A technique for storing data is disclosed. However, if the battery module itself is lost, it cannot be handled, and it is difficult to reliably collect usage history information.

  The present invention has been proposed in view of the above-described conventional problems, and an object of the present invention is to make it difficult to lose log information including usage history information and to collect usage history information of battery modules more reliably. There is.

In order to solve the above-described problems, the present invention is a system for collecting battery module usage history information in a system that supplies power using battery modules that can be charged and discharged at various locations, and is provided in the battery module. Means for acquiring log information including usage history information of each battery module from the log recording memory and the log recording memory provided in the device for charging and discharging the battery module, and the battery based on the acquired log information Means for holding and managing usage history information for each module in a database, and the log recording memory provided in the battery module includes other than the log information of the battery module, The log information of the battery module is recorded .

  In the present invention, log information including usage history information is less likely to be lost, and battery module usage history information can be collected more reliably.

It is a figure which shows the structural example of the electric power supply system concerning one Embodiment of this invention. It is a figure which shows the example of the recording area of the memory for log recording. FIG. 3 is a diagram (part 1) illustrating an example of log information duplication storage between battery modules. It is FIG. (2) which shows the example of log information duplication preservation | save between battery modules. FIG. 10 is a diagram (No. 3) illustrating an example of log information duplication storage between battery modules. FIG. 9 is a diagram (part 4) illustrating an example of log information duplication storage between battery modules.

  Hereinafter, preferred embodiments of the present invention will be described.

<System configuration>
FIG. 1 is a diagram illustrating a configuration example of a power supply system according to an embodiment of the present invention.

  In FIG. 1, information for providing a so-called cloud service, which is composed of a single or a plurality of computer devices, is provided to the business facilities 1X, 1Y,... Of the business operators X, Y,. A processing device 11 is provided. The information processing apparatus 11 includes a communication unit 111, a management unit 112, and a battery module usage history database 113, and the communication unit 111 is connected to a network 2 such as the Internet. The network 2 is not limited to wired / wireless.

  The communication unit 111 has a function of performing data communication with a terminal device or the like opposed via the network 2. The management unit 112 aggregates the usage history information from the battery module log information among the data acquired via the communication unit 111 and stores it in the battery module usage history database 113, and charges the power usage based on the usage history information. And a function of transmitting various control information related to charge / discharge control and recovery of the battery module via the communication unit 111. The management unit 112 not only acquires the use history information about the battery module from the log information itself about a certain battery module, but also reproduces the log information of the missing battery module using other acquired log information, Processing is performed so as to obtain usage history information for all battery modules.

  The data items held in the battery module usage history database 113 are substantially the same as the items included in the acquired log information, and are associated with the ID of each battery module, the date and time when charging / discharging was performed, and the charging / discharging device ID. , Power-supplied device ID, user ID, location (GPS (Global Positioning System) information), charge / discharge power amount, charge / discharge status (voltage, current, temperature, etc.), and the like.

  The charge / discharge facility 3 is an individual or group facility, and includes a power generation device 31 such as a solar panel and a charge / discharge device 32. The charging / discharging device 32 has a function of charging a plurality of battery modules M with power from the power generation device 31 and supplying AC power to the AC power outlet 33 in parallel with charging. The fully charged battery module M can be taken out and stored in the charged battery module pool 34, taken out at any time, inserted into the battery pack, and used for power supply to the power-supplied device.

  The charging / discharging device 32 includes a log recording unit 321, a log holding unit 322, and a communication unit 323. The log recording unit 321 has a function of recording log information indicating a charging state or the like in the memory device MD attached to the battery module M and the log holding unit 322 in the charging / discharging device 32. Each of the memory device MD and the log holding unit 322 is a storage medium that holds contents until overwriting or erasing is performed, and the stored contents can be read from a short distance by a near field wireless communication function such as NFC (Near Field Communication). You can write.

  The communication unit 323 has a function of performing data communication via the network 2, and may not exist depending on the environment of the charge / discharge facility 3. In the charge / discharge facility 3, log information is acquired from the log holding unit 322 or the memory device MD of the battery module M by the mobile terminal 35 such as a smartphone possessed by the user, and the log information is transmitted to the provider facility 1 </ b> X or the like via the network 2. Can be sent.

  The usage environment 4 shows a state in which the battery module M is attached via the battery pack 42 that is compatible with the power-supplied device 41 such as an electrically assisted bicycle. The battery pack 42 may be built in the power supplied device 41 or may be externally attached. The battery module M is obtained from the charged battery module pool 34 in the charge / discharge facility 3. It may be obtained from a similar facility.

  The battery pack 42 includes a user authentication unit 421, a device authentication unit 422, a log recording unit 423, and a log holding unit 424. The user authentication unit 421 has a function of performing authentication based on a prepaid usage right code obtained by the user from the business establishment 1X or the like using the mobile terminal 43 such as a smartphone in advance, and determining whether or not the battery module M can be used. Have. If the power-supplied device 41 has a communication function, the device authentication unit 422 reads the model, power supply conditions, and the like, confirms whether the device can supply power, and if it is a device that can supply power, It has a function to set power supply according to the power supply conditions of the device. If the battery pack 42 is a dedicated one that can only be attached to the power-supplied device 41, the device authentication unit 422 can be omitted.

  The log recording unit 423 has a function of recording log information indicating the power supply status or the like in the log holding unit 424 in the battery device 42 and the memory device MD attached to the battery module M. The log holding unit 424 is a storage medium that holds contents until overwriting or erasing is performed, and reading and writing of stored contents can be performed from a short distance by a short-range wireless communication function such as NFC. In the usage environment 4, log information is acquired from the log holding unit 424 or the memory device MD of the battery module M by the portable terminal 43 possessed by the user, and the log information is transmitted to the provider facility 1 </ b> X or the like via the network 2. Can do.

  The usage environment 5 shows a state in which a battery pack 53 containing a battery module M is connected to a power-supplied device 51 such as a personal computer via a cable 52. The battery module M is obtained from the charged battery module pool 34 in the charge / discharge facility 3. It may be obtained from a similar facility. It is assumed that the power-supplied device 51 is not specifically designed to be fed from the battery module M supplied by the power supply system.

  The cable 52 includes a device information holding unit 521 that can read and write stored contents from a short distance by a short-range wireless communication function such as NFC. The device information holding unit 521 holds the power supply conditions and authentication information of the power-supplied device 51, and the user uses the portable terminal 54 such as a smartphone in advance to connect the ID of the power-supplied device 51 to the device information holding unit 521 of the cable 52. Information such as power supply conditions and authentication information is stored.

  The battery pack 53 includes a user authentication unit 531, a device authentication unit 532, a log recording unit 533, and a log holding unit 534. The user authentication unit 531 has a function of performing authentication by using a prepaid usage right code or the like that is obtained in advance from the business establishment 1X by the mobile terminal 54 such as a smartphone, and determining whether or not the battery module M is allowed to be used. Have. The device authentication unit 532 communicates with the device information holding unit 521 of the cable 52 to read the power supply condition and authentication information of the power-supplied device 51, confirm whether or not the device can supply power, and can supply power In this case, it has a function of setting so that power is supplied according to the power supply conditions of the device.

  The log recording unit 533 has a function of recording log information indicating a power supply status or the like in the log holding unit 534 in the battery device 53 and the memory device MD attached to the battery module M. The log holding unit 534 is a storage medium that holds contents until overwriting or erasing is performed, and reading and writing of stored contents can be performed from a short distance by a short-range wireless communication function such as NFC. Note that the functions of the battery pack 53 may be distributed and provided in the cable 52 used for connection to the power-supplied device 51.

  In the usage environment 5, log information is acquired from the log holding unit 534 or the memory device MD of the battery module M by the portable terminal 54 possessed by the user, and the log information is transmitted to the provider facility 1 </ b> X or the like via the network 2. Can do. Since the power-supplied device 51 such as a personal computer often has a communication function, in this case, log information is acquired from the log holding unit 534 or the memory device MD of the battery module M, and is connected via the network 2. Log information may be transmitted from the power supply device 51 to the business establishment 1X or the like.

<Overall operation>
In FIG. 1, business establishments 1X, 1Y,... Prepare a battery module M (with a built-in memory device MD), a charge / discharge device 32, battery packs 42, 53, etc., and those who wish to pay deposits, etc. Lend to. FIG. 1 shows the state after the loan.

  Since the battery module M cannot be used without an environment for charging, the battery module M is charged in the charging / discharging facility 3 or the like. At this time, the log recording unit 321 of the charging / discharging device 32 records log information on charging / discharging in the memory device MD of each battery module M and also in the log holding unit 322. Regardless of whether the information to be recorded is recorded in the database in chronological order or part of it is recorded, data is created so that the complete log information of the battery module can be reproduced and recorded in both internal memories. To do. Details will be described later.

  A user who wants to use the battery module M obtains the charged battery module M at the charge / discharge facility 3 or the like. In this case, if it is not the battery module M brought in by itself, payment such as a deposit can be made a condition.

  The user who has acquired the charged battery module M sets the battery module M in the power-supplied devices 41 and 51 via the battery packs 42 and 53, and starts to use after authentication by the portable terminals 43 and 54. In addition, the device authentication units 422 and 532 set power supply conditions. When power feeding is performed, the log recording units 423 and 533 of the battery packs 42 and 53 record log information on power feeding in the memory device MD of each battery module M and also in the log holding units 424 and 534.

In the log information of the memory device MD of the battery module M and the log holding units 322, 424, and 534, the date and time when charging / discharging is performed, the charging / discharging device ID, and the power supplied device ID are associated with the ID of each battery module. , User ID, location, charge / discharge power amount, charge / discharge status (voltage, current, temperature, etc.) and the like are included. And these log information
Route from the log holding unit 322 of the charge / discharge device 32 via the communication unit 323 Route from the log holding unit 322 of the charge / discharge device 32 via the mobile terminal 35 Memory device of the battery module M of the charged battery module pool 34 Route from the MD via the portable terminal 35 via the log holding unit 424 of the battery pack 42 via the portable terminal 43 Route from the memory module MD of the battery module M of the battery pack 42 via the portable terminal 43 From the log holding unit 534 of the battery module 53 of the battery module 53 of the battery module 53 of the battery pack 53 to the operator facility 1X and the like via the route via the portable terminal 54 and the like. It is totaled in.

  Note that the communication unit 323 of the charging / discharging device 32 stores the log information recorded in the log holding unit 322 based on the preset logic (transmission address, protocol, etc.) and the database transmission status of the separately recorded log information. It is transmitted to the business facility 1X.

  In addition, the memory device MD of the battery module M, the log holding unit 322 of the charging / discharging device 32, the log holding unit 424 of the battery pack 42, and the log holding unit 534 of the battery pack 53 are preliminarily stored in the mobile terminals 35, 43, and 54. Based on the set logic and the database transmission status of the separately recorded log information, the execution of log information transmission to the database is determined, and if transmission is necessary, the user reads the log information and the business facility 1X, etc. Request to send to. Note that not only a request to the user but also automatic data transmission may be performed without making the user aware of it.

  Note that the battery module usage history database 113 on the cloud exists for each business operator that manages battery modules, and accumulates log information of battery modules that are managed by the business operator. The charging / discharging device 32 and the battery packs 42 and 53 correspond to a specific business, and even if the business contains different battery modules, the log is stored in the battery module usage history database 113 managed by the corresponding business. Send information. The battery module management support application operating in the management unit 112 estimates / reproduces battery module log information by appropriately accessing the battery module usage history database 113 of another business operator.

  Log information from various routes is registered in the battery module usage history database 113 of the operator facility 1X, etc., so that log information is registered in the battery module usage history database 113 from some charge / discharge devices, battery packs, and battery modules. Log information registered by other charging / discharging devices or battery packs that have accommodated the battery module of interest also includes log information that could not be registered even if registration was delayed or registration was delayed Therefore, more complete log information can be reproduced.

  In addition, the log of the battery module of interest is detected by detecting that the battery module of interest is used at the same time from the log information of other battery modules that are stored in the device at the same time and are charged and discharged at the same time. Part of the information can be collected and used to reproduce complete log information.

  In this way, the management unit 112 of the information processing apparatus 11 expands the acquired log information and extracts duplicates even if the log information is not acquired in time order or part of the log information is not acquired. Omit and supplement the deficiency with other log information (obtained by accessing another company's database if necessary), and total the log information as complete as possible.

  The management unit 112 performs processing such as charging / discharging of electric power (payment to a user who has provided a charging service) based on the accumulated usage history information, and information for optimal charge / discharge control. Provision of information for collection, judgment of failure, lifetime, and safety of the battery module M is performed.

<Recording log information>
As described above, each battery module M holds its own log information in the memory device MD, and the log holding unit 322 of the charging / discharging device 32 and the log holding units 424 and 534 of the battery packs 42 and 53 accommodate themselves. Log information of the same content about the battery module M is stored. The log information is collected in the battery module usage history database 113 such as the business facility 1X through various routes via the communication unit 323 of the charge / discharge device 32, the portable terminals 35, 43, 54, and the like. Although there are duplicate collections, information loss can be greatly reduced.

  In the present embodiment, further, the log information of other battery modules accommodated in the same battery pack is redundantly stored in the memory device MD of each battery module M, thereby further reducing the lack of information. .

  FIG. 2 is a diagram illustrating an example of a recording area of a log recording memory corresponding to the memory device MD. In FIG. 2, each of the recording areas # 1 to # 3 is a recording area used for one data recording. In each recording area, as will be described later, there are a case where raw log information is recorded for a plurality of battery modules M and a case where log information about a plurality of battery modules M is coded and recorded.

  FIG. 3 is a diagram illustrating an example of log information duplication storage between battery modules, and is an example in the case where duplication of log information is limited within a battery pack.

  FIG. 3A shows a state where three battery modules M1, M2, and M3 are stored in the battery pack P1. In this state, a process of writing log information in the log recording memory in the battery pack P1 will be described with reference to FIG. The subject of processing is the log recording units 321, 423, 533, etc. in FIG.

  In FIG.3 (c), if a process is started, a log recording part will acquire the log information E1, E2, E3 which wants to carry out database registration about battery module M1, M2, M3 in battery pack P1 (step S11).

  Next, for each battery module M1, M2, M3, the log recording unit obtains the log information E1, E2, E3 of each battery module and the log information of the next battery module in a predetermined order (the head after the end). Recording is performed (step S12).

  FIG. 3B shows a state in which log information is recorded. For the battery module M1, its own log information E1 and log information E2 of the next battery module M2 are recorded. Log information E2 and log information E3 of the next battery module M3 are recorded, and for the battery module M3, own log information E3 and log information E1 of the next battery module M1 are recorded.

  In this case, if log information is collected from the two or more battery modules among the three battery modules M1, M2, and M3 on the side of the business establishment 1X (FIG. 1), all the battery modules M1, M2, and M3 are collected. Log information E1, E2, and E3 can be registered.

  If all three pieces of log information are recorded in each battery module, the log information of all the battery modules can be registered if the log information is collected from one or more battery modules. However, the data size of the log information increases, and a large memory capacity is required, which increases the cost of the battery module. Therefore, considering the merit of collecting log information without losing it and the cost increase due to the increase in data size, redundancy due to duplication of log information is adjusted.

  In addition, although the case where there were three battery modules was demonstrated, it cannot be overemphasized that it can apply to four or more by the same view.

  FIG. 4 is a diagram showing another example of log information duplication storage between battery modules, in which a coded packet is recorded instead of raw log information.

  FIG. 4A shows a state where five battery modules M1, M2, M3, M4, and M5 are stored in the battery pack P1. In this state, a process of writing log information in the log recording memory in the battery pack P1 will be described with reference to FIG. The subject of processing is the log recording units 321, 423, 533, etc. in FIG.

  In FIG. 4C, when the process is started, the log recording unit acquires log information E1, E2, and E3 that the database modules M1, M2, and M3 in the battery pack P1 want to register in the database (step S21).

  Next, the log recording unit calculates packets p1, p2, p3, p4, and p5 using a predetermined matrix (elements α11 to α53) (step S22). Each packet includes the original log information E1, E2, and E3, but by applying a coefficient, the data size can be made the same as each log information.

  Next, the log recording unit records the packets p1, p2, p3, p4, and p5 in each of the battery modules M1, M2, M3, M4, and M5 (step S23). FIG. 4B shows a state where log information is recorded.

  In this case, log information E1, E2, and E3 can be obtained by collecting three packets from any three of the five battery modules. It is assumed that the time until the contents of three of the five log recording memories are collected is shorter than the time until the contents of the three log recording memories are collected from the three battery modules. Therefore, the time for collecting log information can be shortened.

  In addition, although the case where there were five battery modules was demonstrated, it cannot be overemphasized that it can apply to six or more by the same view.

  Moreover, although the example which calculates a packet using a matrix was demonstrated, various other things are assumed as a calculation method.

  FIGS. 5 and 6 are diagrams showing another example of log information duplication storage between battery modules, in which log information duplication is extended to different battery packs.

  FIG. 5A shows a state where three battery modules M1, M2, and M3 are stored in the battery pack P1. In this state, it is assumed that the packet is recorded as shown in FIG. 5B by the processing already described with reference to FIG.

  In this state, it is assumed that the battery module M1 of the battery pack P1 in FIG. 5B has moved to another battery pack P2 as shown in FIG. 5C. It is assumed that the other battery modules in the battery pack P2 are M4 and M5. In this state, a process of writing log information in the log recording memory in the battery pack P2 will be described with reference to FIG. The subject of processing is the log recording units 321, 423, 533, etc. in FIG.

  In FIG. 6, when the process is started, the log recording unit obtains a predetermined matrix (element β11) from the packet p1 recorded in the battery module M1 added to the battery pack P2 and the log information E4 and E5 of the battery modules M4 and M5. .About..beta.33) are used to calculate packets p4, p5, and p6 (step S31).

  Next, the log recording unit records the packets p4 and p5, the packets p5 and p6, and the packets p6 and p4 for each of the battery modules M1, M4, and M5 (step S32). FIG. 5D shows a state where log information is recorded.

  In this case, if log information in the form of a packet is collected from the two battery modules in the battery module M2 and the battery pack P2 on the side of the provider facility 1X or the like (FIG. 1), the packets p2, p3, p4, p5, Since p6 is known, log information E1, E2, E3, E4, and E5 can be decrypted and registered. That is, log information of five battery modules can be registered by collecting three battery modules.

  In addition, in consideration of the merit of collecting log information without loss and the cost increase due to the increase in data size, the redundancy due to duplication of log information can be adjusted as described above.

  Moreover, although the movement of the battery module between the three battery packs has been described, it goes without saying that it can be applied to the movement of the battery module between four or more battery packs by the same concept.

  Moreover, although the example which calculates a packet using a matrix was demonstrated, various other things are assumed as a calculation method.

<Summary>
As described above, according to the present embodiment, log information including usage history information can be collected through various routes, so that log information is less likely to be lost, and battery module usage history information is more reliably stored. Can be collected.

  In addition to the log information of a battery module as log information of a battery module, by recording log information of other battery modules accommodated simultaneously in a device that performs charging and discharging, a plurality of information registered in the database can be obtained. Information can be extracted or supplemented. For example, even if some information of a certain battery module is missing, the missing information can be restored to some extent from the information of other battery modules accommodated at the same time.

  In addition, by adjusting the range of log information of other battery modules to be included in the log information, the data size of the log information is adjusted, and information collection is performed while overcoming the quantitative limitations of the battery module and the battery module storage device built-in memory The reliability (certainty) can be improved.

  The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments, various modifications and changes may be made to the embodiments without departing from the broad spirit and scope of the invention as defined in the claims. Obviously you can. In other words, the present invention should not be construed as being limited by the details of the specific examples and the accompanying drawings.

M battery module MD memory device 1X, 1Y provider facility 11 information processing device 111 communication unit 112 management unit 113 battery module use history database 2 network 3 charge / discharge facility 31 power generation device 32 charge / discharge device 321 log recording unit 322 log holding unit 323 Communication unit 33 AC power outlet 34 Charged battery module pool 35 Mobile terminal 4 Usage environment 41 Power-supplied device 42 Battery pack 421 User authentication unit 422 Device authentication unit 423 Log recording unit 424 Log holding unit 43 Mobile terminal 5 Usage environment 51 Power supply Device 52 Cable 521 Device information holding unit 53 Battery pack 531 User authentication unit 532 Device authentication unit 533 Log recording unit 534 Log holding unit 54 Mobile terminal

Claims (4)

A system that collects battery module usage history information in a system that supplies power using battery modules that can be charged and discharged at various locations,
Means for acquiring log information including usage history information of each battery module from a log recording memory provided in the battery module and a log recording memory provided in a device for charging and discharging the battery module;
Means for holding and managing usage history information for each battery module in a database based on the acquired log information ,
A log recording memory provided in the battery module records log information of another battery module simultaneously accommodated in the device in addition to log information of the battery module. Module usage history information collection system. In the battery module usage history information collection system according to claim 1 ,
The data size of the log information is adjusted by adjusting the range of the log information of the battery module other than the log information of the battery module recorded in the log recording memory provided in the battery module. Battery module usage history information collection system. A device used in a system for collecting battery module usage history information in a system that supplies power by means of battery modules that can be charged and discharged at various locations,
Means for acquiring log information including usage history information of each battery module from a log recording memory provided in the battery module and a log recording memory provided in a device for charging and discharging the battery module;
Means for holding and managing usage history information for each battery module in a database based on the acquired log information ,
A log recording memory provided in the battery module records log information of another battery module simultaneously accommodated in the device in addition to log information of the battery module. Module usage history information collection device. A processing method executed by a battery module usage history information collection device used in a system for collecting battery module usage history information in a system that supplies power by a battery module that can be charged and discharged at various locations,
Obtaining log information including use history information of each battery module from a log recording memory provided in the battery module and a log recording memory provided in a device for charging and discharging the battery module;
A step of holding and managing the use history information for each battery module in a database based on the acquired log information ,
A log recording memory provided in the battery module records log information of another battery module simultaneously accommodated in the device in addition to log information of the battery module. Module usage history information collection method.

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