JP2018148649A - Power storage device and power storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of both of securing idle capacity of a storage memory and preventing disappearance of element data.SOLUTION: A power storage device includes: a power storage element; a physical quantity acquisition unit for acquiring a physical quantity of the power storage element; a storage memory; a power storage device side communication unit; and a power storage device side control unit. If a first condition is met, the power storage device side control unit performs a direct transmission process to transmit element data corresponding to the physical quantity acquired by the physical quantity acquisition unit to an external device via the power storage device side communication unit without having the storage memory store it. If the first condition is not met, the power storage device side control unit performs a storage process to have the storage memory store the element data.SELECTED DRAWING: Figure 2

Description

  The technology disclosed in this specification relates to a power storage device.

  2. Description of the Related Art Conventionally, there is a technique for transmitting battery data according to battery cell voltage and discharge current (hereinafter referred to as “battery cell voltage, etc.”) acquired by a battery pack detachably attached to a power tool to an external device. It is known (see Patent Document 1). Specifically, the battery pack includes a battery cell, a discharge / charge detector that acquires a voltage of the battery cell, a memory, a communication unit, and a controller.

Special table 2014-529320 gazette

  In the above-described conventional technique, when element data such as battery data is always stored in the memory, it is necessary to always ensure a sufficient free capacity for storing the element data in the memory. For this reason, for example, a large-sized memory having a relatively large capacity is required as the memory, and this causes problems such as a large-sized power storage device and the inability to use the memory for other functions. There is a fear. Conversely, if the device data is transmitted to the external device without always storing it in the memory, for example, in the case of communication failure between the power storage device and the external device, the device data may not be stored anywhere and may be lost. There is.

  In this specification, the technique which can solve the subject mentioned above is disclosed.

  A power storage device disclosed in this specification is a power storage device, and includes a power storage element, a physical quantity acquisition unit that acquires a physical quantity of the power storage element, a storage memory, a power storage device side communication unit, and a power storage device side control unit. And when the first condition is satisfied, the power storage device side control unit stores the element data corresponding to the physical quantity acquired by the physical quantity acquisition unit in the storage memory. Without performing the direct transmission process for transmitting to the external device via the power storage device side communication unit, if the first condition is not satisfied, the element data is stored in the storage memory Perform storage processing.

It is explanatory drawing which shows the structure of the battery system 10 in embodiment. 4 is a flowchart showing a flow of processing by a battery control unit 130. 4 is a flowchart showing a flow of processing by a server control unit 210. 5 is a flowchart showing a flow of processing by a terminal control unit 310.

  The technology disclosed in this specification can be implemented as the following forms.

(1) A power storage device disclosed in this specification is a power storage device, and includes a power storage element, a physical quantity acquisition unit that acquires a physical quantity of the power storage element, a storage memory, a power storage device side communication unit, and a power storage device And the storage device side control unit stores element data corresponding to the physical quantity acquired by the physical quantity acquisition unit when the first condition is satisfied. If the first condition is not satisfied, the element data is stored in the storage memory when a direct transmission process is performed to transmit to the external device via the power storage device side communication unit without storing the device data. The storage process to be stored in is executed. The power storage device is mounted on various devices such as a power device and a mobile device. It is expected that the surrounding environment of the power storage device will vary greatly depending on the type of equipment installed and the location where the equipment is located. Further, the characteristics of the power storage element vary depending on the surrounding environment and usage time. For this reason, the history information of the element data according to the physical quantity of the power storage element in various surrounding environments is secured, and the replacement time of the power storage element is specified based on the history information, or the power storage device with higher performance is identified. It is preferable to lead to development. In addition, an increase in the size of the power storage device leads to an increase in the size of a device in which the power storage device is mounted. In response to such circumstances of the power storage device, according to the present power storage device, the element data is not stored in the storage memory when the transmission process of the element data to the external device is executed. Therefore, regardless of whether or not it is time to transmit element data to an external device, it is possible to reduce the free capacity to be secured in the storage memory as compared to a configuration in which element data is always stored in the storage memory. Further, the increase in size of the power storage device due to the increase in size of the storage memory can be suppressed. Further, according to this power storage device, when the element data transmission process to the external device is not executed, the element data is stored in the storage memory, so whether or not it is the time to transmit the element data to the external device. Regardless, the history information of element data can be secured.

(2) In the power storage device, the first condition may include a configuration in which communication between the power storage device and the external device is possible. In the power storage device, for example, the communication state between the power storage device and the external device is likely to change due to the change in the surrounding environment described above. According to this power storage device, when communication between the power storage device and an external device is possible, execution of direct transmission processing prevents the storage memory capacity from being used to store element data. can do. In addition, when communication between the power storage device and the external device is not possible, it is possible to suppress the loss of element data due to the execution of the storage process and the inability to secure history information.

(3) In the power storage device, the power storage device-side control unit is capable of communicating between the power storage device and the external device, and has not yet been transmitted and stored in the storage memory by the storage process. When the second condition including both of the remaining element data is satisfied, the untransmitted element data is transmitted to the external device via the power storage device side communication unit. A transmission process may be performed, and the first condition may further include that the element data that has not been transmitted remains in the storage memory. According to this power storage device, until the transmission of the untransmitted element data stored in the storage memory is completed, the storage process is continued while the untransmitted element data is transmitted to the external device by executing the subsequent transmission process. Thus, the element data corresponding to the physical quantity newly acquired by the physical quantity acquisition unit is stored in the storage memory, so that the disappearance of the element data can be suppressed. When transmission of untransmitted element data is completed, direct transmission processing is executed. As a result, the element data group corresponding to the physical quantity of the electrical storage element acquired by the physical quantity acquisition unit in the process that becomes possible after communication between the electrical storage device and the external device is disabled, ensures the time series of physical quantity acquisition However, it can be transmitted to an external device.

(4) In the power storage device, communication between the power storage device and the external device is in a first communication state and a second communication state in which communication reliability is higher than that in the first communication state. The first condition may further include that the communication between the power storage device and the external device is in the second communication state. According to this power storage device, when the communication between the power storage device and the external device is in a relatively reliable state, the element data is not stored in the storage memory by executing the direct transmission process, It can be transmitted to an external device in real time. On the other hand, when the communication between the power storage device and the external device is in a relatively unreliable state, there is a high possibility that the element data is not properly transmitted to the external device. Loss of element data due to the state can be suppressed.

(5) In the power storage device, the first condition includes at least one of a current flowing through the power storage element being a reference current value or less and a voltage of the power storage element being a reference voltage value or less. It is good also as a structure. According to this power storage device, when the current flowing through the power storage element or the voltage of the power storage element is relatively small, element data corresponding to the use state of the power storage element can be transmitted to the external device in real time by executing the direct transmission process. it can. On the other hand, when the current flowing through the power storage element or the voltage of the power storage element is relatively large, a load supplied with power from the power storage element is operating, and noise generated by the load is generated between the power storage device and the external device. May adversely affect communications. For this reason, the element data is stored in the storage memory by executing the storage process. Thereby, for example, when it is necessary to specify the storage state based on the history of element data on the external device side, the element data stored in the storage memory can be collectively transmitted to the external device.

(6) In the power storage device, the first condition includes that a degree of deterioration indicating a degree of deterioration of the power storage element is equal to or lower than a reference level, and the power storage device side control unit includes the first condition. Is not satisfied, in addition to the storage process, the storage state of the storage element is specified using the physical quantity acquired by the physical quantity acquisition unit, and an operation according to the determination result of the storage state is performed. It is good also as a structure which performs the state specific process to perform. When the deterioration degree of the power storage element is relatively large, there is a high urgency to specify the power storage state at an early stage. Therefore, according to the present power storage device, when the degradation level of the power storage element is larger than the reference level, the storage state is identified early by suppressing the disappearance of the element data by executing the storage process, and the identification result It is possible to perform an operation according to. On the other hand, when the degradation level of the power storage element is equal to or lower than the reference level, the storage device is specified by the external device by executing the direct transmission process.

(7) In the power storage system, the power storage system including the power storage device according to any one of (1) to (6) and an external device, wherein the external device includes an external communication unit, An external control unit, wherein the external control unit specifies the power storage state of the power storage device using the element data received via the external communication unit, and determines the power storage state specification result. It is good also as a structure which transmits the corresponding external side specific data to a communication terminal via the said external side communication part. According to this power storage system, it is possible to transmit a storage state specification result specified based on element data in an external device to a communication terminal.

(8) In the power storage system, the power storage device side control unit specifies the power storage state of the power storage element using the physical quantity acquired by the physical quantity acquisition unit, and the power storage device according to the specified result of the power storage state The side specifying data may be transmitted to the communication terminal via the power storage device side communication unit. According to the present power storage system, the power storage device side specific data is transmitted from the power storage device to the communication terminal, so that the communication terminal receives the external side specific data from the external device due to, for example, a communication failure between the external device and the communication terminal. Even if it is not possible, the communication terminal can acquire the storage state identification result.

(9) In the power storage system, the power storage device side control unit does not transmit the power storage device side specific data to the communication terminal when the communication terminal can receive the external side specific data from the external device. It is good also as a structure. According to this power storage system, when appropriate external side specific data is transmitted to the communication terminal, the processing load of the power storage device side control unit is suppressed by suppressing the execution of the process of transmitting the power storage device side specific data to the communication terminal. Can be reduced.

(10) In the above power storage system, the power storage device-side control unit, when both communication between the power storage device and the communication terminal and communication between the communication terminal and the external device are established, the element data Is transmitted to the communication terminal via the power storage device side communication unit, and at least one of communication between the power storage device and the communication terminal and communication between the communication terminal and the external device is not established The element data may not be transmitted to the communication terminal. According to this power storage system, when at least one of communication between the power storage device and the communication terminal and communication between the communication terminal and the external device is not established, the power storage device does not transmit element data to the communication terminal. Accordingly, it is possible to prevent the element data from being wastedly transmitted from the power storage device to the communication terminal even though the element data is not transmitted to the external device.

  The technology disclosed in this specification can be realized in various forms. For example, a power storage device, a power storage system including the power storage device and an external device, a control method for these devices and systems, The present invention can be realized in the form of a computer program for realizing the control method, a non-temporary recording medium on which the computer program is recorded, and the like.

A. Embodiment:
A-1. Configuration of battery system 10:
FIG. 1 is an explanatory diagram showing a configuration of a battery system 10 in the present embodiment. The battery system 10 includes, for example, a battery 100 provided in a vehicle 20 that is an engine automobile, and a management server 200 disposed outside the vehicle 20. In the battery system 10, communication between the battery 100 and the management server 200 is performed via a mobile terminal 300 such as a smartphone or a tablet. The battery system 10 corresponds to the power storage system in the claims.

  The vehicle 20 further includes an engine 22, a starter 24, an alternator 26, an electrical component 28, and an electronic control unit (hereinafter referred to as “ECU”) 30. The electrical component 28 is, for example, a headlight, an audio system, a security system, or the like. The battery 100 corresponds to the power storage device in the claims, the management server 200 corresponds to the external device in the claims, and the mobile terminal 300 corresponds to the communication terminal in the claims.

(Configuration of battery 100)
The battery 100 is a starter battery that supplies power to the starter 24 to start the engine 22. The battery 100 also supplies power to the electrical component 28 and the ECU 30. On the other hand, the battery 100 is charged by the electric power generated by the alternator 26 using the rotation of the engine 22.

  The battery 100 includes a battery casing 102, a pair of external terminals 104 and 106, an assembled battery 110, a relay 120, a battery control unit 130, a detection unit 140, a battery communication unit 150, and a storage memory 160. Is provided. The battery housing 102 is a substantially rectangular parallelepiped container, and is formed of, for example, a synthetic resin. The pair of external terminals 104 and 106 are substantially cylindrical conductive members that penetrate from the inner wall surface to the outer wall surface of the battery housing 102, and are formed of a metal such as a lead alloy, for example. The assembled battery 110 corresponds to the storage element in the claims, the battery control unit 130 corresponds to the storage device side control unit in the claims, and the battery communication unit 150 corresponds to the storage device side in the claims. Corresponds to the communication unit.

  The assembled battery 110 is disposed inside the battery housing 102 and has a configuration in which a plurality (six in FIG. 1) of cells C are connected in series. Each cell C is a secondary battery cell that can be repeatedly charged and discharged, and is specifically a lead-acid battery cell. A starter 24, an alternator 26, an electrical component 28, and an ECU 30 are electrically connected in parallel between the positive external terminal 104 and the negative external terminal 106, respectively. The relay 120 is provided between the external terminal 104 on the positive electrode side and the assembled battery 110. The relay 120 is switched between an open (open) state and a closed (closed) state by open / close control by the battery control unit 130. When the relay 120 is in the closed state, the battery 100 (the assembled battery 110) can supply power to the starter 24, the electrical component 28, and the ECU 30 (hereinafter referred to as “load”), and the alternator 26 can be charged. It becomes possible. On the other hand, when the relay 120 is in an open state, the battery 100 (the assembled battery 110) cannot supply power to the load, and cannot be charged by the alternator 26. The relay 120 may be provided between the external terminal 106 on the negative electrode side and the assembled battery 110.

  The battery control unit 130 is disposed inside the battery housing 102 and includes a battery central processing unit (hereinafter referred to as “CPU”) 132 and a battery memory 134. The battery memory 134 includes a random access memory (hereinafter referred to as “RAM”), a read only memory (hereinafter referred to as “ROM”), and the like, and the operation of each part of the battery 100 such as the relay 120 and the battery communication unit 150. Various programs and the like are stored for controlling the device and for executing the device side specifying process described later. The battery CPU 132 controls each unit of the battery 100 according to a program read from the battery memory 134.

  The detection unit 140 is disposed inside the battery housing 102, detects a physical quantity of the assembled battery 110, and outputs battery data corresponding to the physical quantity. The physical quantity of the assembled battery 110 includes, for example, the current flowing through the assembled battery 110, the voltage, resistance, temperature, humidity of the assembled battery 110, the liquid level of the electrolyte in the battery casing 102, and the pressure in the battery casing 102. In particular, it is preferable to include at least one of a current flowing through the assembled battery 110 and a voltage of the assembled battery 110. Specifically, the detection unit 140 includes, for example, a voltage sensor that detects at least one of a voltage of the entire assembled battery 110 and an individual voltage of each cell C, a current sensor that detects a current flowing through the assembled battery 110, and a set. A temperature sensor for detecting the temperature of the battery 110 is provided. The detection unit 140 corresponds to the physical quantity acquisition unit in the claims, and the battery data corresponds to the element data in the claims.

  The battery communication unit 150 is disposed inside the battery casing 102, and is a wired communication method such as USB (Universal Serial Bus) connection, NFC (Near Field Communication (Near Field Communication)), Bluetooth (registered trademark), or the like. For example, an interface that communicates with a communication device such as the mobile terminal 300 by the wireless communication method. The battery communication unit 150 is also an interface that communicates with the ECU 30 by a wired communication method or a wireless communication method such as CAN (Controller Area Network).

  The storage memory 160 is, for example, a non-volatile memory having a larger storage capacity than the above-described battery memory 134, and is configured by, for example, a flash memory (registered trademark). The storage memory 160 is different from a communication buffer provided in a communication device such as the battery communication unit 150 and temporarily storing data for communication processing.

(Configuration of management server 200)
The management server 200 includes a server control unit 210 and a server communication unit 220. The server control unit 210 includes a server CPU 212 and a server memory 214. The server memory 214 is a large-capacity nonvolatile memory having a larger storage capacity than the storage memory 160 described above, and is configured by, for example, a hard disk drive (hereinafter referred to as “HDD”). The server memory 214 stores various programs for controlling the operation of each unit of the management server 200 such as the server communication unit 220 and executing an external side specifying process described later. The server CPU 212 is a high-speed CPU capable of processing a large amount of data at a higher processing speed than the battery CPU 132 described above. The server CPU 212 controls each unit of the management server 200 according to the program read from the server memory 214. The server communication unit 220 is an interface that communicates with a communication terminal such as the portable terminal 300 via the public communication line NW by a wireless communication method. The server control unit 210 corresponds to the external control unit in the claims, and the server communication unit 220 corresponds to the external communication unit in the claims.

(Configuration of mobile terminal 300)
The portable terminal 300 includes a terminal control unit 310, a terminal communication unit 320, an operation unit 330, and a display unit 340. The terminal control unit 310 includes a terminal CPU 312 and a terminal memory 314. The terminal memory 314 includes a RAM, a ROM, and the like, and various programs for controlling the operation of each unit of the mobile terminal 300 such as the terminal communication unit 320 and executing the processing of FIG. Remember. The terminal CPU 312 controls each unit of the mobile terminal 300 according to the program read from the terminal memory 314. The terminal communication unit 320 is an interface that communicates with the battery 100 by a wired communication method or a wireless communication method. The terminal communication unit 320 is also an interface for communicating with the management server 200 via the public communication line NW by a wireless communication method. The operation unit 330 includes, for example, a liquid crystal display with a touch panel, buttons, switches, and the like, and accepts an operation by a user. The display unit 340 includes, for example, the above-described liquid crystal display with a touch panel and displays various images and information.

  Hereinafter, communication for transmission / reception of data between the battery 100 and the mobile terminal 300 (see S160 and S170 in FIG. 2 described later) is referred to as “battery-terminal communication”, and the communication between the mobile terminal 300 and the management server 200. Communication for data transmission / reception (see S210 and S280 in FIG. 3 described later) is referred to as “terminal-server communication”.

A-2. Processing executed in the battery system 10:
(Processing executed by battery control unit 130)
FIG. 2 is a flowchart showing a flow of processing executed by the battery control unit 130. When power supply from the assembled battery 110 to the battery control unit 130 is started, the battery control unit 130 starts a count operation for repeatedly counting a predetermined time, and executes the processing shown in FIG. First, the battery control unit 130 determines whether or not the acquisition timing has arrived (S110). The acquisition timing is a timing at which the battery control unit 130 acquires (reads) the battery data output from the detection unit 140 described above. The battery control unit 130 determines that the acquisition timing has not arrived until the predetermined time has been counted from the previous acquisition timing (S110: NO), and maintains the standby state.

  On the other hand, when the predetermined time is counted from the previous transmission timing, the battery control unit 130 determines that the acquisition timing has arrived (S110: YES), and communication between the vehicle 20 and the management server 200 is possible. It is determined whether or not (S120). Specifically, when both battery-terminal communication and terminal-server communication are possible, the battery control unit 130 determines that communication between the vehicle 20 and the management server 200 is possible ( (S120: YES), if at least one of the battery-terminal communication and the terminal-server communication is not possible, it is determined that communication between the vehicle 20 and the management server 200 is not possible (S120: NO).

  The battery control unit 130 periodically transmits a communication authentication signal (for example, a pulse signal with an authentication number of the battery 100) via the battery communication unit 150. When the battery control unit 130 receives the communication permission signal (pulse signal with the authentication number of the portable terminal 300) returned from the portable terminal 300 that has received the communication authentication signal via the battery communication unit 150, the battery-terminal Inter-communication becomes a communication establishment state (shake hand). The battery control unit 130 determines that the battery-terminal communication is possible when the battery-terminal communication is in the communication established state. If the battery-terminal communication is not in the communication established state, the battery-terminal communication is not performed. Judge that it is impossible. In addition, the battery control unit 130 transmits an inquiry signal indicating whether or not communication between the terminal and the server is possible to the mobile terminal 300 in a state where the battery-terminal communication is possible, and communication enable / disable information received from the mobile terminal 300 (described later). Based on the above, it is determined whether or not communication between the terminal and the server is possible.

In S120, when it is determined that the communication between the vehicle 20 and the management server 200 is possible (S120: YES), the battery control unit 130 determines whether the server transmission condition is satisfied (S130). . The server transmission condition is a condition for the battery 100 to transmit battery data to the management server 200 in a state in which the vehicle 20 and the management server 200 can communicate, and includes at least one of the following conditions A to C. .
<Condition A>
Condition A is that the battery pack 110 is in use (at least one of charging and discharging). For example, when the battery control unit 130 satisfies a use condition including at least one of a current flowing through the assembled battery 110 being a reference current value or more and a voltage of the assembled battery 110 being a reference voltage value or more. In addition, it is determined that the assembled battery 110 is in use, and if the use conditions are not satisfied, it can be determined that the assembled battery 110 is not in use.
<Condition B>
The condition B is that the degree of deterioration indicating the degree of deterioration of the battery 100 (the assembled battery 110) is equal to or less than the specified deterioration level. The battery control unit 130 can determine whether or not the degree of deterioration of the battery 100 (the assembled battery 110) is equal to or lower than a specified deterioration level based on external-side specific data or device-side specific data described later. The specified deterioration level corresponds to the reference level in the claims.
<Condition C>
Condition C is that both the battery-terminal communication and the terminal-server communication are in a state of high communication reliability. For example, the battery control unit 130 transmits a radio wave strength inquiry signal regarding the received radio wave strength of the terminal communication unit 320 to the mobile terminal 300, and the received radio wave strength of the terminal communication unit 320 from the mobile terminal 300 is equal to or higher than the reference strength. When the response (radio wave intensity information) is obtained, it is determined that the communication between the terminal and the server is in a highly reliable state, and the response that the received radio wave intensity of the terminal communication unit 320 is less than the reference strength is obtained. In this case, it is possible to determine that the communication between the terminal and the server is in a state where the communication reliability is low. Note that a state in which communication reliability is high corresponds to the first communication state in the claims, and a state in which communication reliability is low corresponds to the second communication state in the claims. Further, the determination conditions of S120 and S130 correspond to the first condition.

  If the battery control unit 130 determines that the server transmission condition is satisfied (S130: YES), the battery control unit 130 determines whether untransmitted battery data remains in the storage memory 160 (S140). In the present embodiment, as will be described later, the battery data stored in the storage memory 160 is deleted after being transmitted to the mobile terminal 300. For this reason, if there is battery data stored in the storage memory 160, the battery control unit 130 determines that untransmitted battery data remains in the storage memory 160 and stores it in the storage memory 160. If there is no battery data, it can be determined that untransmitted battery data does not remain in the storage memory 160. The positive condition for the determination in S140 corresponds to the second condition, and the negative condition for the determination in S140 corresponds to the first condition.

  When the battery control unit 130 determines that untransmitted battery data remains in the storage memory 160 (S140: YES), the detection unit 140 acquires the new battery data currently output. While executing the storage process stored in the storage memory 160 (S150), the untransmitted battery data remaining in the storage memory 160 is transmitted to the portable terminal 300 via the battery communication unit 150 (S160), and thereafter Return to S110 described above. That is, when untransmitted battery data remains in the storage memory 160, the new battery data is stored in the storage memory 160 without being transmitted to the mobile terminal 300. When the battery control unit 130 receives a transmission completion notification indicating that the battery data has been transmitted to the management server 200 from the portable terminal 300, the battery control unit 130 deletes the battery data that has been transmitted from the storage memory 160. Thereby, reduction of the free capacity of the storage memory 160 due to the battery data can be suppressed. Further, the process of S160 corresponds to the subsequent transmission process in the claims.

  On the other hand, when it is determined that the untransmitted battery data does not remain in the storage memory 160 (S140: NO), the new battery data is stored in the storage memory 160 without executing the processing of S150 and S160. Instead, it transmits to the portable terminal 300 via the battery communication part 150 (S170), and returns to above-mentioned S110 after that. Battery control unit 130 preferably transmits identification information for identifying vehicle 20 to mobile terminal 300 in association with battery data. In this way, when the management server 200 is in a state where battery data can be received from the plurality of vehicles 20, the management server 200 can manage the received battery data data for each vehicle 20 based on the identification information. it can. Further, the process of S170 corresponds to the direct transmission process in the claims.

  The battery control unit 130 determines that communication between the vehicle 20 and the management server 200 is impossible (S120: NO), or determines that the server transmission condition is not satisfied (S130: NO). Then, a storage process for storing the new battery data in the storage memory 160 is executed (S180). Next, the battery control unit 130 executes device-side identification processing (S190). The device-side specifying process is performed based on a relatively small amount of battery data that can be stored in the battery memory 134 (for example, a state of charge (hereinafter referred to as “SOC”), a state of health (hereinafter referred to as “SOC”). This is a simple specifying process that specifies “SOH” and the like). The battery state corresponds to the storage state in the claims.

  Specifically, the SOC in the device side specifying process is specified as follows. First, for example, when the engine 22 is stopped (when the vehicle 20 is idling stopped or parked), the voltage of the assembled battery 110 is relatively small, so that it is substantially proportional to the open circuit voltage (hereinafter referred to as “OCV”). Value. Therefore, the battery control unit 130 specifies the OCV based on the battery data (the voltage of the assembled battery 110) output from the detection unit 140 when the engine 22 is stopped, and the OCV and SOC stored in the battery memory 134 in advance. Based on the information (for example, OCV-SOC curve) specifying the relationship and the specified OCV, the SOC of the assembled battery 110 can be specified. When communication between the vehicle 20 and the management server 200 is not possible, if the engine 22 is operating and does not stop, the battery control unit 130 specifies when the engine 22 stops before that, It is preferable to divert the SOC stored in the battery memory 134.

  Further, the SOH in the device side specifying process is specified as follows. The battery control unit 130 specifies the internal resistance of the assembled battery 110 based on the battery data (the current flowing through the assembled battery 110 and the voltage of the assembled battery 110) output from the detection unit 140 when the engine 22 is started, and based on the internal resistance. Identify SOH. Specifically, the battery control unit 130 specifies SOH as a lower value as the internal resistance of the assembled battery 110 is larger. When communication between the vehicle 20 and the management server 200 is not possible, if the engine 22 is always operating and does not stop, it is specified when the engine 22 stops before that and is stored in the battery memory 134. It is preferable to divert the stored SOH.

  After execution of the device-side specifying process (S190), the battery control unit 130 transmits device-side specifying data corresponding to the specifying result of the device-side specifying process to the mobile terminal 300 via the battery communication unit 150 (S200). Thereafter, the process returns to S110 described above. Note that the processes in S190 and S200 correspond to the state specifying process in the claims. Further, when the power supply from the assembled battery 110 to the battery control unit 130 is stopped, the battery control unit 130 ends the process shown in FIG. The device-side specific data corresponds to the power storage device-side specific data in the claims.

(Processes executed by the server control unit 210)
FIG. 3 is a flowchart showing a flow of processing executed by the server control unit 210. The server control unit 210 starts the process shown in FIG. 3 when power supply from the power source (not shown) to the management server 200 is started. First, the server control unit 210 determines whether battery data has been received via the server communication unit 220 (S210). If the server control unit 210 determines that the battery data has been received (S210: YES), the server control unit 210 stores the received battery data in the server memory 214 (S220), and proceeds to S230. As described above, since the server memory 214 is a large-capacity non-volatile memory, it corresponds to the physical quantity of a large number of batteries detected in the battery 100 over a long period of time compared to the battery memory 134 and the terminal memory 314. The battery data can be stored as history information. On the other hand, when determining that the battery data is not received (S210: NO), the server control unit 210 proceeds to S230 without executing the process of S220.

  In S230, the server control unit 210 determines whether or not a specific timing for each set period has arrived. The specific timing is a timing at which the external side specific processing described below is executed and external specific data corresponding to the specific result is transmitted to the mobile terminal 300. The server control unit 210 determines that the specific timing has not arrived until counting of the time corresponding to the set period from the previous specific timing is completed (S230: NO), and returns to the above-described S210. On the other hand, the server control unit 210 determines that the specific timing has arrived when counting of the time corresponding to the set period has been completed from the previous specific timing (S230: YES), and executes the external side specific processing (S240). .

  The external side specifying process is a highly accurate specifying process for specifying the battery state of the assembled battery 110 based on the history information of a large amount of battery data stored in the server memory 214. Specifically, the SOC in the external side specifying process is specified as follows, for example. Based on the history information of the battery data, the server control unit 210 sets the voltage of the assembled battery 110 when the engine 22 is stopped for a first reference time (for example, 5 minutes) or more as the OCV, and the OCV and the server in advance The initial SOC of the battery pack 110 is specified based on the OCV-SOC curve stored in the memory 214 for use. Then, the current SOC of the battery pack 110 is specified based on the initial SOC and the integrated value of the current flowing through the battery pack 110 after the engine 22 is started. In this external side specifying process, in addition to the OCV, the SOC is specified in consideration of the integrated value of the current indicating the charge / discharge amount after the engine 22 is started, and therefore the apparatus side specifying process that does not consider the integrated value of the current Compared to, the SOC identification accuracy is high. For example, a plurality of OCV-SOC curves that differ depending on the temperature of the assembled battery 110 are stored in the server memory 214, and the OCV corresponding to the temperature of the assembled battery 110 detected by the detection unit 140 based on the battery data. A -SOC curve may be selected and the initial OCV determined using the selected OCV-SOC curve. Thereby, the initial OCV can be specified with high accuracy while suppressing the influence of the temperature variation of the assembled battery 110.

  Further, the SOH in the external side specifying process (S240) is specified as follows, for example. The behavior of the current flowing through the assembled battery 110 and the voltage of the assembled battery 110 at the start of the engine 22 is not always the same, and may vary greatly due to the influence of the surrounding environment of the assembled battery 110, for example. On the other hand, the server control unit 210 uses the battery data history information and the battery data output from the detection unit 140 (the current flowing in the assembled battery 110 and the assembled battery 110 at each start of the engine 22 a plurality of times). The internal resistance of the assembled battery 110 for a plurality of times is specified on the basis of the voltage and the SOH is specified based on the average value of the internal resistance for the plurality of times. As described above, in the external side specifying process, the influence of the surrounding environment or the like is suppressed by specifying the SOH based on the average value of the internal resistance for a plurality of times, and therefore only the internal resistance at the time of starting the engine 22 once. Therefore, the SOH identification accuracy is higher than the device-side identification process for identifying the SOH from the device.

  After executing the external side identification process (S240), the server control unit 210 determines whether the external identification result is equal to or higher than the first reference level (S250). The first reference level is, for example, 60% for SOC and 80% for SOH. When the server control unit 210 determines that the external identification result is equal to or higher than the first reference level, that is, the SOC is 60% or higher and the SOH is 80% or higher (S250: YES), the assembled battery Since the remaining capacity of 110 is relatively large and the degree of deterioration is relatively small, the set period used in S230 is set to the first period T1 (for example, 7 days) (S260), and then the process proceeds to S280. On the other hand, the server control unit 210 satisfies that at least one of the external identification result is less than the first reference level, that is, the SOC is less than 60% and the SOH is less than 80%. When the determination is made (S250: NO), the remaining capacity of the battery pack 110 is relatively small or the degree of deterioration is relatively large, so the set period used in S230 is set to a second period T2 (which is shorter than the first period T1). <T1, for example, 1 day) is set (S270), and then the process proceeds to S280. As a result, the execution frequency of the external side identification process is increased, and the external identification result is transmitted to the mobile terminal 300 in a short cycle. Therefore, the terminal control unit 310 responds to changes in the remaining capacity and the deterioration level of the assembled battery 110. Information with high followability can be displayed on the display unit 340. In place of the processing of S250 to S270, the server control unit 210 performs level determination on the external identification result based on three or more different reference levels, and the setting used in S230 according to the level determination result The period may be set to any one of three or more different periods.

  In S280, the server control unit 210 transmits the external side identification data corresponding to the external identification result to the mobile terminal 300 via the server communication unit 220. The server memory 214 stores a correspondence table between the identification information for identifying the vehicle 20 and the specific information of the terminal communication unit 320 that is the transmission destination. Based on the correspondence table and the identification information associated with the battery data, the server control unit 210 can identify the terminal communication unit 320 that is the transmission destination of the external side specific data. With such a configuration, the management server 200 can individually specify the battery state for the batteries mounted in each of the plurality of vehicles. Note that when the power supply from the power source to the management server 200 is stopped, the server control unit 210 ends the processing illustrated in FIG. 3.

(Processing executed by terminal control unit 310)
FIG. 4 is a flowchart showing a flow of processing executed by the terminal control unit 310. In the terminal control unit 310, for example, when battery-terminal communication is in a communication established state, battery management application software (hereinafter referred to as “battery management application”) is activated by the operation of the operation unit 330 by the user. Then, the process shown in FIG. 4 is started. When the battery management application is activated, the terminal control unit 310 periodically transmits a communication authentication signal (for example, a pulse signal with an authentication number of the battery 100) via the terminal communication unit 320, and the battery 100 The communication permission signal (pulse signal with the authentication number of the portable terminal 300) returned from the mobile terminal 300 may be received via the terminal communication unit 320, whereby the battery-terminal communication may be in a communication established state.

  First, the terminal control unit 310 determines whether or not the above-described communication availability inquiry signal regarding the availability of the terminal-server communication is received from the battery 100 via the terminal communication unit 320 (S310). If the terminal control unit 310 determines that an inquiry signal indicating whether communication is possible is received (S310: YES), the terminal control unit 310 determines whether communication between the terminal and the server is possible, and transmits communication enable / disable information indicating the determination result to the terminal communication unit 320. To the battery 100 (S320), and proceeds to S330. An example of a method for determining whether or not terminal-server communication is possible is as follows. For example, when the management server 200 is fixedly arranged at a predetermined position and is always in a state where wireless communication is possible, it is possible to determine whether or not communication between the terminal and the server is possible based on the received radio wave intensity of the terminal communication unit 320. it can. That is, when the received radio wave intensity of the terminal communication unit 320 is greater than or equal to a predetermined threshold, it is determined that the terminal-server communication is possible, and when the received radio wave intensity of the terminal communication unit 320 is less than the predetermined threshold, If the terminal communication unit 320 cannot receive radio waves, it can be determined that the terminal-server communication is not possible. If the terminal control unit 310 determines that it has not received an inquiry signal indicating whether communication is possible (S310: NO), it proceeds to S330 without executing the process of S320.

  In S330, the terminal control unit 310 determines whether or not the terminal communication unit 320 has received from the battery 100 an inquiry signal regarding the radio wave intensity related to the reception radio wave intensity of the terminal communication unit 320 under the above-described condition C. When the terminal control unit 310 determines that the terminal communication unit 320 has received the inquiry signal of the radio field strength (S330: YES), the terminal control unit 310 determines whether the reception radio field strength of the terminal communication unit 320 is equal to or higher than the reference strength, The radio wave intensity information indicating the determination result is transmitted to the battery 100 via the terminal communication unit 320 (S340), and the process proceeds to S350. If the terminal control unit 310 determines that the terminal communication unit 320 has not received the radio wave intensity inquiry signal (S330: NO), the terminal control unit 310 proceeds to S350 without executing the process of S340.

  In S350, terminal control unit 310 determines whether battery data is received from battery 100 via terminal communication unit 320 or not. If it is determined that the battery data has been received (S350: YES), the terminal control unit 310 transmits (transfers) the received battery data to the management server 200 via the terminal communication unit 320 (S360). Next, when the transmission of the battery data is completed, the terminal control unit 310 transmits the above-described transmission completion notification to the battery 100 via the terminal communication unit 320 (S370), and proceeds to S380. If the terminal control unit 310 determines that the battery data has not been received (S350: NO), the process proceeds to S380 without executing the processes of S360 and S370.

  In S380, terminal control unit 310 determines whether device-side specific data or external-side specific data (hereinafter collectively referred to as “specific data”) has been received. As described above, the device-side specific data is received from the battery 100 via the terminal communication unit 320, and the external-side specific data is received from the management server 200 via the terminal communication unit 320. When it is determined that the specific data has been received (S380: YES), the terminal control unit 310 causes the display unit 340 to display the battery state specific result based on the specific data (S390), and then returns to the above-described S310. If the terminal control unit 310 determines that the specific data has not been received (S380: NO), the terminal control unit 310 returns to the above-described S310 without executing the process of S390. Note that when the above-described battery management application is terminated by the operation of the operation unit 330 by the user, the terminal control unit 310 ends the process illustrated in FIG. 4.

A-3. Effects of this embodiment:
According to the present embodiment, the battery data is transmitted to the management server 200 via the portable terminal 300 without being stored in the storage memory 160 by performing the direct transmission process (the process of S170 in FIG. 2). For this reason, the battery data can be transmitted to the management server 200 without requiring the storage memory 160 to reserve a free capacity for storing the battery data. Further, since the battery data is stored in the storage memory 160 by executing the storage process (the processes of S150 and S180 in FIG. 2), for example, in the case of poor communication between the vehicle 20 (battery 100) and the management server 200. It is possible to prevent the battery data from being lost without being stored anywhere.

  Further, when communication between the vehicle 20 and the management server 200 is possible (S120: YES in FIG. 2), a direct transmission process is executed (S170). Thereby, it is possible to suppress the use of the capacity of the storage memory 160 for storing battery data, even though the possibility of battery data loss is low. Further, when communication between the vehicle 20 and the management server 200 is impossible (S120: NO), the storage process is executed without executing the direct transmission process (S180 in FIG. 2). Thereby, it can suppress that battery data lose | disappears due to communication failure.

  Further, until the transmission of the untransmitted battery data stored in the storage memory 160 is completed (S140 in FIG. 2: YES), the untransmitted battery data is externalized by executing the subsequent transmission process (S160 in FIG. 2). The new battery data is stored in the storage memory 160 by continuing the storage process (S150) while being transmitted to the apparatus, so that the loss of the battery data can be suppressed. When the transmission of untransmitted battery data is completed (S140: NO), a direct transmission process (S170) is executed. Thereby, while ensuring the time series of the detection order of the battery data, the battery data group output from the detection unit 140 in the process that becomes possible after the communication between the vehicle 20 and the management server 200 is disabled. It can be transmitted to the management server 200.

  If the communication between the vehicle 20 and the management server 200 is relatively reliable (S130: YES in FIG. 2), the direct transmission process (S170) is executed to store the battery data. Without being stored in the memory 160, it can be transmitted to the management server 200 in real time. On the other hand, when the communication between the vehicle 20 and the management server 200 is in a relatively low reliability state (S130: NO), there is a high possibility that the battery data is not properly transmitted to the management server 200. By executing the storage process (S180), it is possible to suppress the battery data from being lost due to the communication state.

  Further, when the current flowing through the assembled battery 110 or the voltage of the assembled battery 110 is relatively small (S130: YES in FIG. 2), the battery data of the assembled battery 110 is managed in real time by executing the direct transmission process (S170). Can be sent to. On the other hand, when the current flowing through the assembled battery 110 or the voltage of the assembled battery 110 is relatively large (S130: NO), for example, battery noise generated from the alternator 26 may adversely affect communication between the battery 100 and the management server 200 or the like. is there. For this reason, the battery data is stored in the storage memory 160 by executing the storage process (S180). Thereby, when it becomes necessary to specify the battery state based on the battery data history on the management server 200 side, the battery data stored in the storage memory 160 can be collectively transmitted to the management server 200. (S160).

  Further, when the degree of deterioration of the battery 100 (the assembled battery 110) is relatively large, there is a high urgency to specify the battery state of the assembled battery 110 at an early stage. Therefore, according to the present embodiment, when the degree of deterioration of the battery 100 is greater than the specified deterioration level, the battery state is identified early on the battery 100 side while suppressing the loss of battery data by executing the storage process (S180). The identification result can be transmitted to the mobile terminal 300 at an early stage. On the other hand, when the deterioration level of the battery 100 is equal to or less than the specified deterioration level (S130 in FIG. 2: YES), the battery state is specified by the management server 200 by executing the direct transmission process (S170) (S240 in FIG. 3). .

  In addition, since the mobile terminal 300 receives not only the external side specific data from the management server 200 but also the device side specific data from the battery 100, the mobile terminal 300 causes the management server 200 to fail due to, for example, a terminal-server communication failure. Even if the external side specific data cannot be received from the mobile terminal 300, the battery terminal specific result can be acquired. In addition, for example, when it is desired to change information related to the battery state specification (for example, the first reference level, the second reference level, the OCV-SOC curve, etc.), for the external side determination process, the change work on the management server 200 side By responding to the above, high specific accuracy can be maintained. Furthermore, the management server 200 carries a highly accurate identification result based on the history information of a large amount of battery data without being restricted by the performance of the battery CPU 132 and the like provided in the vehicle 20 and the storage capacity of the battery memory 134 and the like. It can be transmitted to the terminal 300.

  Moreover, when communication between the vehicle 20 and the management server 200 is possible (S120 of FIG. 2: YES), that is, when appropriate external side specific data is transmitted to the portable terminal 300, the device side specific data is stored. By suppressing the execution of the process to be transmitted to the mobile terminal 300, the processing load on the battery control unit 130 can be reduced.

  Further, when at least one of the battery-terminal communication and the terminal-server communication is not possible (S120: NO in FIG. 2), the battery control unit 130 does not transmit the battery data to the mobile terminal 300. Even though the battery data is not transmitted to the management server 200, it is possible to prevent the battery data from being transmitted from the battery 100 to the portable terminal 300 in vain.

B. Variation:
The technology disclosed in the present specification is not limited to the above-described embodiment, and can be modified into various forms without departing from the gist thereof. For example, the following modifications are possible.

  In the said embodiment, although the battery system 10 in which communication between the battery 100 and the management server 200 was performed via the portable terminal 300 was illustrated as an electrical storage system, it is not limited to this. In the power storage system, for example, communication between the battery 100 and the management server 200 may be performed via a communication terminal other than the mobile terminal 300. The other communication terminal may be, for example, a car navigation system, a PC that is fixedly arranged, or the like, and is particularly preferably provided with a display unit. Further, the power storage system may be configured such that the battery 100 and the management server 200 communicate directly without using a communication terminal.

  In the above embodiment, the vehicle 20 that is an engine car is illustrated as an apparatus provided with the battery 100, but the apparatus is not limited to this, and a hybrid car, an electric car, a forklift, an electric car, a train, a motorcycle, etc. Other vehicles may be used. The device may be a moving body other than a vehicle, or may be a fixed device such as a machine tool. However, in the case of a mobile object, the above-described embodiment that executes the device side specifying process in addition to the external side specifying process is particularly useful because communication between the power storage device and the external device is likely to be disabled. It is.

  In the above-described embodiment, the management server 200 disposed outside the vehicle 20 provided with the battery 100 is illustrated as an external device. However, the present invention is not limited to this, and the inside of a device having a load to which the power storage device supplies power. It is good also as an apparatus (for example, ECU etc.) arrange | positioned.

  In the above embodiment, the ECU 30 may determine whether or not the idling stop can be executed based on the SOC by the external side specifying process or the equipment side specifying process. In the device-side specifying process, since the SOC specifying accuracy is relatively low, it is necessary to set a high reference SOC capable of idling stop in order to reliably prevent the engine 22 from starting. On the other hand, in the external side specifying process, since the SOC specifying accuracy is relatively high, the fuel consumption of the vehicle 20 is improved by increasing the idling stop execution frequency by the amount that the reference SOC need not be set higher than necessary. Can be made.

  In the above embodiment, the battery 100 including the assembled battery 110 including the six cells C is illustrated as the power storage element. However, the power storage element is not limited thereto, and the battery includes five or less cells or seven or more cells C. But you can. The storage element is not limited to a lead storage battery, but may be a secondary battery such as a lithium ion battery, or may be a primary battery such as a manganese battery or an alkaline battery, or a capacitor.

  The configuration of the battery system 10 in the above embodiment and the configurations of the battery 100, the management server 200, and the mobile terminal 300 that constitute the battery system 10 are merely examples, and can be variously modified. For example, the battery control unit 130 of the battery 100 may include a plurality of CPUs or may include hardware such as one or a plurality of ASICs (Application Specific Integrated Circuits). In such a case, the execution subject of some or all of the processes shown in FIG. 2 may be a plurality of CPUs or hardware.

  In the battery 100 of the above embodiment, at least one of the battery control unit 130, the detection unit 140, and the battery communication unit 150 may be disposed outside the battery housing 102.

  In the above embodiment, the detection unit 140 includes the voltage sensor, the current sensor, and the temperature sensor. However, the detection unit 140 is not limited thereto, and the detection unit 140 includes at least one of the voltage sensor, the current sensor, and the temperature sensor. It may be provided. In addition to these sensors, the detection unit 140 may include a humidity sensor, a liquid level sensor that detects the liquid level of the electrolytic solution in the battery housing 102, and the like.

  In the embodiment, the detection unit 140 that acquires the physical quantity of the assembled battery 110 by itself and outputs the battery data corresponding to the physical quantity is illustrated as the physical quantity acquisition unit. However, the physical quantity acquisition unit is not limited to this. For example, an input / output unit that receives and acquires a signal corresponding to a physical quantity of the assembled battery 110 output from a current sensor arranged outside the battery housing 102 may be used.

  In the processing shown in FIGS. 2 to 4 of the above embodiment, some steps may be omitted, contents may be changed, or the order may be changed with other steps. For example, in FIG. 2, when the battery control unit 130 determines that the transmission timing has arrived (S110: YES), the process may proceed to S130 without executing the process of S120, or the vehicle 20 and the management server 200 may If it is determined that communication between the two devices is not possible (S120: NO), the processing may return to S110 without executing the device-side specifying process. Moreover, when the communication between the vehicle 20 and the management server 200 is possible (S120: YES in FIG. 2), the battery control unit 130 may proceed to S140 without executing the process of S130. Furthermore, when the battery control unit 130 determines that the server transmission condition is satisfied (S130: YES), the battery control unit 130 may proceed to S170 without performing the processing of S140 to S160.

  In the device side specifying process (S190 in FIG. 2) and the external side specifying process (S240 in FIG. 3) of the above embodiment, the battery state is specified by specifying SOC or SOH, and the specified value is the specified result. However, the present invention is not limited to this, and the battery state is specified by, for example, comparing SOC or SOH with a predetermined threshold, and the comparison result may be the specified result. In addition, the battery state is specified by determining whether or not the assembled battery 110 has an internal short circuit by determining whether or not the current flowing through the assembled battery 110 is equal to or less than a predetermined value, or based on the detection result of the liquid level sensor. The level of the electrolyte solution in the battery housing 102 may be specified. In addition, when the assembled battery 110 is repeatedly charged and discharged with a large current, the internal resistance of the assembled battery 110 may temporarily increase (hereinafter referred to as transient deterioration). Therefore, the battery state is specified by calculating the value of the internal resistance ratio during charging / discharging of the assembled battery 110 (resistance value during discharging / resistance value during charging), and temporary deterioration occurs from the ratio value. It may be specified whether or not.

  In the above embodiment, the battery control unit 130 executes either the direct transmission process or the storage process based on whether or not communication between the vehicle 20 and the management server 200 is possible (S120 in FIG. 2). However, the present invention is not limited to this. For example, when the deterioration level of the assembled battery 110 is less than the reference level based on the internal resistance at the start of the engine 22 described above, a direct transmission process is executed, and the assembled battery 110 is When the degree of deterioration is equal to or higher than the reference level, urgency is required, so that a storage process that is less affected by the communication environment and that can obtain a specific result at an early stage may be executed. Further, when the free capacity of the storage memory 160 is less than the reference amount, priority is given to securing the free capacity of the storage memory 160 by executing the direct transmission process, and the free capacity of the storage memory 160 is equal to or larger than the reference amount. In this case, priority may be given to suppression of loss of battery data (loss of battery data history) by executing storage processing. In parallel with the storage process, the battery data may be transmitted to the external device.

  In the above embodiment, the battery control unit 130 has shown the form in which the battery data is not transmitted to the management server 200 when it is determined that the server transmission condition is not satisfied (S130: NO in FIG. 2), but the present invention is not limited to this. For example, the battery control unit 130 may transmit the battery data to the management server 200 (S170 in FIG. 2) regardless of whether the server transmission condition is not satisfied (S130 in FIG. 2).

  In the above embodiment, in a state where the vehicle 20 and the management server 200 can communicate with each other, at least one of the conditions A to C is set as a server transmission condition that is a condition for the battery 100 to transmit battery data to the management server 200. Although including was illustrated, it is not limited to this. For example, if the server transmission condition may include at least one of the conditions B and C obtained by removing the condition A from the conditions A to C, a condition D different from the conditions A to C is set in the conditions A to C. It may include at least one of the added conditions A to D.

  In the above-described embodiment, the process of transmitting the device-side specific data to the mobile terminal 300 is exemplified as the state specifying process. However, the present invention is not limited to this, and the notification unit provided in the battery 100 indicates the specific result of the device-side specifying process. It is good also as a process which alert | reports outside (for example, an indicator lamp, a display screen, a sound generator etc.).

  In the above embodiment, untransmitted battery data is deleted from the storage memory 160 after being transmitted to the mobile terminal 300. However, the present invention is not limited to this, and the transmitted battery data may not be deleted from the storage memory 160. . In this case, the battery data stored in the storage memory 160 after transmission does not correspond to the untransmitted battery data in the claims.

10: Battery system 20: Vehicle 22: Engine 24: Starter 26: Alternator 28: Electrical component 30: ECU 100: Battery 102: Battery housing 104, 106: External terminal 110: Battery pack 120: Relay 130: Battery control unit 132 : Battery CPU 134: Battery memory 140: Detection unit 150: Battery communication unit 160: Storage memory 200: Management server 210: Server control unit 212: Server CPU 214: Server memory 220: Server communication unit 300: Mobile Terminal 310: Terminal control unit 312: Terminal CPU 314: Terminal memory 320: Terminal communication unit 330: Operation unit 340: Display unit C: Cell

Claims (10)

A power storage device,
A storage element;
A physical quantity acquisition unit for acquiring a physical quantity of the power storage element;
Storage memory;
A storage device side communication unit;
A power storage device side control unit,
The power storage device side control unit,
When the first condition is satisfied, the element data corresponding to the physical quantity acquired by the physical quantity acquisition unit is not stored in the storage memory, and is externally transmitted through the power storage device side communication unit. Execute the direct transmission process to send to the device,
A power storage device that executes a storage process of storing the element data in the storage memory when the first condition is not satisfied. The power storage device according to claim 1,
The first condition is a power storage device including that communication between the power storage device and the external device is possible. The power storage device according to claim 2,
The power storage device-side control unit can communicate between the power storage device and the external device, and the untransmitted element data stored in the storage memory by the storage process remains. When the second condition including both of the above is satisfied, a subsequent transmission process for transmitting the untransmitted element data to the external device via the power storage device side communication unit is performed,
The first condition further includes that the element data not yet transmitted does not remain in the storage memory. The power storage device according to claim 2 or 3,
The communication between the power storage device and the external device is in a first communication state and a second communication state in which communication reliability is higher than that in the first communication state,
The first condition is a power storage device further including that communication between the power storage device and the external device is in the second communication state. The power storage device according to any one of claims 1 to 4, wherein
The first condition includes a power storage device including at least one of a current flowing through the power storage element being a reference current value or less and a voltage of the power storage element being a reference voltage value or less. The power storage device according to any one of claims 1 to 5,
The first condition includes that a degree of deterioration indicating a degree of deterioration of the power storage element is a reference level or less,
When the first condition is not satisfied, the power storage device side control unit specifies the power storage state of the power storage element using the physical quantity acquired by the physical quantity acquisition unit in addition to the storage process And a power storage device that executes a state specifying process for performing an operation according to the result of specifying the power storage state. A power storage system comprising the power storage device according to any one of claims 1 to 6 and an external device,
The external device is
An external communication unit,
An external control unit,
The external control unit specifies the power storage state of the power storage device using the element data received via the external communication unit, and specifies the external side specific data according to the storage state specification result, A power storage system that transmits to a communication terminal via an external communication unit. The power storage system according to claim 7,
The power storage device side control unit specifies the power storage state of the power storage element using the physical quantity acquired by the physical quantity acquisition unit, and stores the power storage device side specific data according to the determination result of the power storage state. A power storage system for transmitting to the communication terminal via a side communication unit. The power storage system according to claim 8, wherein
The power storage device side control unit does not transmit the power storage device side specific data to the communication terminal when the communication terminal can receive the external side specific data from the external device. The power storage system according to any one of claims 7 to 9,
The power storage device side control unit,
When both communication between the power storage device and the communication terminal and communication between the communication terminal and the external device are established, the element data is transmitted to the communication terminal via the power storage device side communication unit. And
A power storage system in which the element data is not transmitted to the communication terminal when at least one of communication between the power storage device and the communication terminal and communication between the communication terminal and the external device is not established.

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