JP2011064571A - Method and system for diagnosing residual life - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately diagnose the residual life of a battery which is installed or to be installed in a vehicle traveling using power from a motor. <P>SOLUTION: The use condition and life record of a life battery (the charge characteristics of the life battery) are stored in a database in association with each other as life information to be ready for use. When diagnosing the residual life of a battery under diagnose, a life charge voltage variation ΔVmcli is obtained from a correspondence area corresponding to the use condition of the battery under diagnose out of the database (S140). A diagnose charge voltage variation ΔVmccu when the battery under diagnose is charged on a charge sequence is obtained (S170, S180). From the relationship between the obtained diagnose charge voltage variation ΔVmccu and the life charge voltage variation ΔVmcli, the residual life distance Rd and residual life time Rt of the battery under diagnose are calculated (S190). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a remaining life diagnosis method and a remaining life diagnosis system. More specifically, the present invention relates to a remaining life of a diagnostic battery that is mounted on or used in a vehicle that travels using power from an electric motor. The present invention relates to a remaining life diagnosis method and a remaining life diagnosis system.

  2. Description of the Related Art Conventionally, a vehicle diagnosis system that is executed using data transmission / reception between a service center, each vehicle registered in the center, and a dealer has been proposed (see, for example, Patent Document 1). In this vehicle diagnosis system, data (maintenance information data, malfunction data of parts, data for estimating part failure, maintenance data, etc.) and a driver required for calculating the degree of deterioration and consumption of the consumables of the vehicle in each vehicle. The driving behavior is detected and transmitted to the center. On the center side, function parameters for calculating the degree of deterioration and consumption of consumables and the function parameters for calculating the factor ratio that affects them are calculated. It is transmitted to the vehicle, and in each vehicle, the degree of deterioration and consumption of the consumables of the vehicle and the factor ratio thereof are calculated and displayed on the display. For example, when the diagnosis target of the consumables is a battery, the deterioration degree of the battery, the deterioration factor in consideration of the driver behavior (low charge degree, engine speed, number of times of charging, etc.) are displayed.

JP 2005-227141 A

  In such a system, as a vehicle, an electric vehicle including a driving motor and a battery that exchanges electric power with the motor, a series type or a parallel type hybrid vehicle including an engine in addition to the driving motor and the battery are used. Assuming that the performance of the battery may affect the running, it is an important issue to diagnose the remaining life of the battery more appropriately. For this reason, as a method for diagnosing the remaining life of the battery, it is desired to construct a method different from the method described above.

  The main purpose of the remaining life diagnosis method and the remaining life diagnosis system of the present invention is to more appropriately diagnose the remaining life of a battery mounted in or mounted on a vehicle that uses power from an electric motor. To do.

  The remaining life diagnosis method and the remaining life diagnosis system of the present invention employ the following means in order to achieve the above-mentioned main object.

The first remaining life diagnosis method of the present invention comprises:
A remaining life diagnosis method for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that travels using power from an electric motor,
(A) In the information storage means for storing information, the usage state of the life battery that is the battery that has reached the end of life, and the charge characteristics of the life battery when the life battery is charged by a predetermined charging sequence determined in advance Prepare by associating and memorizing a certain life charge characteristic,
(B) obtaining a use state of the diagnostic battery and a diagnostic charge characteristic which is a charge characteristic of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence;
(C) The life charging associated with the use state of the life battery corresponding to the use state of the acquired diagnostic battery among the acquired diagnostic charge characteristics and the information stored in the information storage means The remaining life of the diagnostic battery is diagnosed from the relationship with the corresponding life charge characteristics that are characteristics,
This is the gist.

  In the first remaining life diagnosis method of the present invention, the information storage means for storing the information is charged with the life battery according to the use state of the life battery that is the battery that has reached the end of life and a predetermined charging sequence determined in advance. When the diagnostic battery is charged according to the usage state of the diagnostic battery and a predetermined charging sequence, the diagnostic battery is charged by associating with the lifetime charging characteristic, which is the charging characteristic of the battery at the time. A diagnostic charge characteristic, which is a characteristic, and a life charge characteristic associated with the use state of the life battery corresponding to the use state of the diagnostic battery among the information stored in the acquired diagnostic charge characteristic and information storage means The remaining life of the diagnostic battery is diagnosed from the relationship with a certain service life charging characteristic. In general, since the charging characteristics of the battery depend on the aging of the battery and the like, the remaining life of the diagnostic battery can be diagnosed more appropriately by comparing the diagnostic charging characteristics and the corresponding life charging characteristics.

  In the first remaining life diagnosis method of the present invention, the diagnostic battery and the life battery are constituted by a plurality of modules, and the step (a) charges the life battery by the predetermined charging sequence. And storing the voltage variation of each module of the life battery in the information storage means in association with the use state of the life battery as the life charge characteristic, wherein the step (b) It may be a step of acquiring, as the diagnostic charge characteristic, a voltage variation of each module of the diagnostic battery when the diagnostic battery is charged by a charging sequence.

  Further, in the first remaining life diagnosis method of the present invention, the step (a) includes a behavior of a life charge voltage that is a voltage of the life battery when the life battery is charged by the predetermined charge sequence. A new charge voltage which is a voltage of the new battery when the new battery, which is a new battery, is stored in the information storage means in association with the use state of the life battery as a life charge characteristic and is charged by the predetermined charge sequence. Is stored in the information storage means as a new charge characteristic which is a charge characteristic of the new battery, and the step (b) is a step when the diagnostic battery is charged by the predetermined charge sequence. In the step of acquiring the behavior of the diagnostic charging voltage, which is the voltage of the diagnostic battery, as the diagnostic charging characteristic In step (c), a diagnostic deviation which is a deviation between the behavior of the acquired diagnostic charging voltage and the behavior of the new charging voltage stored in the information storage means, and the information storage means A step of diagnosing the remaining life of the diagnostic battery from the relationship between the behavior of the life charge voltage as the corresponding life charge characteristic and the life deviation which is a deviation between the behavior of the new charge voltage stored in the information storage means It can also be. In the first remaining life diagnosis method of the present invention of this aspect, in the step (c), the difference between the diagnosis charge voltage and the new charge voltage at a predetermined timing of the predetermined charge sequence is set as the diagnosis deviation. And a step of diagnosing the remaining life of the diagnostic battery using the difference between the life charge voltage and the new charge voltage at the predetermined timing as the life shift, or the predetermined charge sequence. The difference between the time required for the diagnostic charging voltage to reach the predetermined voltage from the start of the time and the time required for the new charging voltage to reach the predetermined voltage after the start of the predetermined charging sequence is defined as the diagnostic deviation and the Time required from the start of a predetermined charging sequence until the lifetime charging voltage reaches the predetermined voltage, and the predetermined charging sequence The new charge voltage from the start is a step for assessing the remaining service life of the diagnostic battery the difference between the time required to reach the predetermined voltage as the life shift may be a thing.

  Furthermore, in the first remaining life diagnosis method of the present invention, the step (a) includes a life charge which is a relationship between a current and a voltage of the life battery when the life battery is charged by the predetermined charge sequence. The current / voltage characteristic is stored in the information storage means in association with the use state of the life battery as the life charge characteristic, and the current of the new battery when a new battery which is a new battery is charged by the predetermined charging sequence. A new charge current voltage characteristic that is a relationship between the voltage and the voltage is stored in the information storage means as a new charge characteristic that is a charge characteristic of the new battery, and the step (b) is performed according to the predetermined charge sequence. Diagnostic charging current that is a relationship between current and voltage of the diagnostic battery when the diagnostic battery is charged The step (c) is a difference between the acquired diagnostic charge current voltage characteristic and the new charge current voltage characteristic stored in the information storage means. Relationship between diagnosis deviation and life deviation which is a deviation between a life charge current voltage characteristic as a corresponding life charge characteristic stored in the information storage means and a new charge current voltage characteristic stored in the information storage means To the step of diagnosing the remaining life of the diagnostic battery.

  Alternatively, in the first remaining life diagnosis method of the present invention, the predetermined charging sequence may be a charging sequence including charging of a battery with a predetermined high power. In this way, the remaining life of the diagnostic battery can be diagnosed relatively quickly.

The second remaining life diagnosis method of the present invention comprises:
A remaining life diagnosis method for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that travels using power from an electric motor,
(A) In the information storage means for storing the information, the use state of the life battery that has reached the end of its life and the discharge characteristics of the life battery when the life battery is discharged by a predetermined discharge sequence determined in advance. Prepare by associating and storing a certain life discharge characteristic,
(B) obtaining a use state of the diagnostic battery and a diagnostic discharge characteristic that is a discharge characteristic of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence;
(C) The life discharge associated with the use state of the life battery corresponding to the use state of the acquired diagnostic battery among the acquired diagnostic discharge characteristics and the information stored in the information storage means Diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life discharge characteristics,
This is the gist.

  In the second remaining life diagnosis method of the present invention, the life battery is discharged in the information storage means for storing information according to the use state of the life battery that has reached the end of life and a predetermined discharge sequence determined in advance. The life discharge characteristics that are the discharge characteristics of the life battery are stored in association with each other, and the use state of the diagnosis battery and the diagnosis battery when the diagnosis battery is discharged by a predetermined discharge sequence are prepared. Diagnostic discharge characteristics that are discharge characteristics are acquired, and the life discharge associated with the use state of the battery corresponding to the use state of the diagnostic battery among the information stored in the acquired diagnosis discharge characteristic and information storage means The remaining life of the diagnostic battery is diagnosed from the relationship with the corresponding life discharge characteristics. Generally, since the discharge characteristics of a battery depend on the aging of the battery and the like, the remaining life of the diagnostic battery can be diagnosed more appropriately by comparing the diagnostic discharge characteristics with the corresponding life discharge characteristics.

  In the second remaining life diagnosis method of the present invention, the diagnostic battery and the life battery are composed of a plurality of modules, and the step (a) includes discharging the life battery by the predetermined discharge sequence. And storing the voltage variation of each module of the life battery in the information storage means in association with the use state of the life battery as the life discharge characteristic, wherein the step (b) It may be a step of acquiring, as the diagnostic discharge characteristics, voltage variation of each module of the diagnostic battery when the diagnostic battery is discharged by a discharge sequence.

  Further, in the second remaining life diagnosis method of the present invention, the step (a) includes a behavior of a life discharge voltage which is a voltage of the life battery when the life battery is discharged by the predetermined discharge sequence. A new discharge voltage which is a voltage of the new battery when the new battery is discharged as a life discharge characteristic in association with the use state of the life battery and is stored in the information storage means and the predetermined discharge sequence is performed. Is stored in the information storage means as a new battery discharge characteristic that is a discharge characteristic of the new battery, and the step (b) is performed when the diagnostic battery is discharged by the predetermined discharge sequence. In the step of acquiring the behavior of the diagnostic discharge voltage, which is the voltage of the diagnostic battery, as the diagnostic discharge characteristic In step (c), a diagnostic deviation which is a deviation between the behavior of the acquired diagnostic discharge voltage and the behavior of the new discharge voltage stored in the information storage means, and the information storage means A step of diagnosing the remaining life of the diagnostic battery from the relationship between the life discharge voltage behavior as the corresponding life discharge characteristics and the life deviation which is a deviation between the behavior of the new discharge voltage stored in the information storage means It can also be. In the second remaining life diagnosis method of the present invention according to this aspect, in the step (c), the difference between the diagnosis discharge voltage and the new discharge voltage at a predetermined timing of the predetermined discharge sequence is set as the diagnosis deviation. And the step of diagnosing the remaining life of the diagnostic battery using the difference between the life discharge voltage and the new product discharge voltage at the predetermined timing as the life shift, or the predetermined discharge sequence. The difference between the time required from the start of the diagnosis discharge voltage to the predetermined voltage and the time required from the start of the predetermined discharge sequence until the new discharge voltage reaches the predetermined voltage is defined as the diagnosis deviation and the Time required from the start of a predetermined discharge sequence until the life discharge voltage reaches the predetermined voltage, and the predetermined discharge sequence The new discharge voltage from the start is a step for assessing the remaining service life of the diagnostic battery the difference between the time required to reach the predetermined voltage as the life shift may be a thing.

  Furthermore, in the second remaining life diagnosis method of the present invention, the step (a) includes a life discharge which is a relationship between a current and a voltage of the life battery when the life battery is discharged by the predetermined discharge sequence. The current-voltage characteristic is stored in the information storage means in association with the use state of the life battery as the life discharge characteristic, and the current of the new battery when a new battery which is a new battery is discharged by the predetermined discharge sequence A new discharge current voltage characteristic that is a relationship between the voltage and the voltage is stored in the information storage means as a new discharge characteristic that is a discharge characteristic of the new battery, and the step (b) is performed according to the predetermined discharge sequence. Diagnostic discharge current that is a relationship between current and voltage of the diagnostic battery when the diagnostic battery is discharged The step (c) is a deviation between the acquired diagnostic discharge current voltage characteristic and the new discharge current voltage characteristic stored in the information storage means. Relationship between the diagnosis deviation and the life deviation which is the deviation between the life discharge current voltage characteristic as the corresponding life discharge characteristic stored in the information storage means and the new discharge current voltage characteristic stored in the information storage means To the step of diagnosing the remaining life of the diagnostic battery.

  Alternatively, in the second remaining life diagnosis method of the present invention, the predetermined discharge sequence may be a discharge sequence including discharge of a battery with a predetermined high power. In this way, the remaining life of the diagnostic battery can be diagnosed relatively quickly.

The first remaining life diagnosis system of the present invention comprises:
A remaining life diagnostic system for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that uses power from an electric motor,
An information storage for storing the use state of a life battery, which is a battery that has reached the end of life, in association with a life charge characteristic that is a charge characteristic of the life battery when the life battery is charged by a predetermined charging sequence determined in advance. Means,
Information acquisition means for acquiring a use state of the diagnostic battery and a diagnostic charging characteristic that is a charging characteristic of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence;
The acquired diagnostic charging characteristics and the lifetime charging characteristics associated with the usage status of the lifetime battery corresponding to the usage status of the acquired diagnostic battery among the information stored in the information storage means. Diagnostic means for diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life charge characteristics,
It is a summary to provide.

  In the first remaining life diagnosis system of the present invention, there are charge characteristics of the life battery when the life battery is charged according to the use state of the life battery that is the battery that has reached the end of life and a predetermined charging sequence determined in advance. Diagnostic charging which is a charging characteristic of the diagnostic battery when the diagnostic battery is charged in accordance with the usage state of the diagnostic battery and a predetermined charging sequence, which is stored in the information storage means in association with the life charge characteristic And the corresponding lifetime charging characteristics, which are the lifetime charging characteristics associated with the usage status of the lifetime battery corresponding to the usage status of the diagnostic battery among the information stored in the information storage means Thus, the remaining life of the diagnostic battery is diagnosed from the relationship. In general, since the charging characteristics of the battery depend on the aging of the battery and the like, the remaining life of the diagnostic battery can be diagnosed more appropriately by comparing the diagnostic charging characteristics and the corresponding life charging characteristics.

The second remaining life diagnosis system of the present invention comprises:
A remaining life diagnostic system for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that uses power from an electric motor,
Information storage for storing in association the usage state of a life battery that is a battery that has reached the end of life and the life discharge characteristic that is the discharge characteristic of the life battery when the life battery is discharged according to a predetermined discharge sequence determined in advance. Means,
Information acquisition means for acquiring a use state of the diagnostic battery and a diagnostic discharge characteristic that is a discharge characteristic of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence;
The acquired diagnostic discharge characteristics and the lifetime discharge characteristics associated with the usage status of the lifetime battery corresponding to the usage status of the acquired diagnostic battery among the information stored in the information storage means. Diagnostic means for diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life discharge characteristics,
It is a summary to provide.

  In the second remaining life diagnosis system of the present invention, there are the discharge characteristics of the life battery when the life battery is discharged according to the use state of the life battery, which is the battery that has reached the end of life, and a predetermined discharge sequence determined in advance. Diagnosis that relates to the life discharge characteristics and stores them in the information storage means and prepares them, and is the diagnostic battery usage state and the diagnostic battery discharge characteristics when the diagnostic battery is discharged by a predetermined discharge sequence The discharge characteristics and the acquired diagnostic discharge characteristics and the lifespan corresponding to the use state of the diagnostic battery among the information stored in the information storage means. The remaining life of the diagnostic battery is diagnosed from the relationship with the discharge characteristics. Generally, since the discharge characteristics of a battery depend on the aging of the battery and the like, the remaining life of the diagnostic battery can be diagnosed more appropriately by comparing the diagnostic discharge characteristics with the corresponding life discharge characteristics.

1 is a configuration diagram showing an outline of a configuration of a remaining life diagnosis system 20 for diagnosing a remaining life of a battery 12 as a battery mounted on an automobile 10. FIG. 2 is a configuration diagram showing an outline of a configuration of a battery 12. FIG. It is explanatory drawing which shows an example of the database containing lifetime information and new article information. It is explanatory drawing which shows an example of lifetime charging voltage variation (DELTA) Vmcli and new article charging voltage variation (DELTA) Vmcnew. It is explanatory drawing which shows an example of the behavior of 2nd life charge voltage Vbcli2 and 2nd new charge voltage Vbcnew2. It is explanatory drawing which shows an example of the behavior of 3rd lifetime charge voltage Vbcli3 and 3rd new article charge voltage Vbcnew3. It is explanatory drawing which shows an example of lifetime charge current voltage characteristic IVcli and new article charge current voltage characteristic IVcnew. It is explanatory drawing which shows an example of lifetime discharge voltage variation (DELTA) Vmdli and new article discharge voltage variation (DELTA) Vmdnew. An example of the behavior of the second life discharge voltage Vbdli2 and the second new discharge voltage Vbdnew2 is shown in FIG. It is explanatory drawing which shows an example of the behavior of 3rd lifetime discharge voltage Vbdli3 and 3rd new article discharge voltage Vbdnew3. It is explanatory drawing which shows an example of lifetime discharge current voltage characteristic IVcli and a new article discharge current voltage characteristic. 4 is a flowchart illustrating an example of a remaining life diagnosis routine executed by a terminal 30. 4 is a flowchart illustrating an example of a data search routine executed by a server 50. It is explanatory drawing which shows an example of diagnostic charging voltage variation (DELTA) Vmccu. It is explanatory drawing which shows an example of the behavior of 2nd new charge voltage Vbcnew2, the behavior of 2nd diagnostic charge voltage Vbccu2, and the behavior of 2nd lifetime charge voltage Vbcli2. It is explanatory drawing which shows an example of the behavior of 3rd new charge voltage Vbcnew3, the behavior of 3rd diagnostic charge voltage Vbccu3, and the behavior of 3rd lifetime charge voltage Vbcli3. It is explanatory drawing which shows an example of the new article charge current voltage characteristic IVcnew, the diagnostic charge current voltage characteristic IVccu, and the lifetime charge current voltage characteristic IVcli. It is explanatory drawing which shows an example of diagnostic charge voltage variation (DELTA) Vmdcu and lifetime discharge voltage variation (DELTA) Vmdli. It is explanatory drawing which shows an example of the behavior of 2nd new discharge voltage Vbdnew2, the behavior of 2nd diagnostic discharge voltage Vbdcu2, and the behavior of 2nd lifetime discharge voltage Vbdli2. It is explanatory drawing which shows an example of the behavior of 3rd new discharge voltage Vbdnew3, the behavior of 3rd diagnostic discharge voltage Vbdcu3, and the behavior of 3rd life discharge voltage Vbdli3. It is explanatory drawing which shows an example of the new article discharge current voltage characteristic IVdnew, the diagnostic discharge current voltage characteristic IVdcu, and the lifetime discharge current voltage characteristic IVdli. It is a block diagram which shows an example of the block diagram which shows the outline of a structure of the motor vehicle 110 and the remaining life diagnosis system 120.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a remaining life diagnosis system 20 for diagnosing the remaining life of a battery 12 mounted on an automobile 10 as an embodiment of the present invention. FIG. It is a block diagram which shows an outline. Hereinafter, the automobile 10 will be described first, and then the remaining life diagnosis system 20 will be described.

  As illustrated in FIG. 1, the vehicle 10 is configured as a hybrid vehicle including an electric vehicle that travels using power from a motor 11 configured as a synchronous generator motor, for example, and an engine (not shown) in addition to the motor 11. A battery 12 for exchanging electric power with the motor 11, a vehicle-side connector 14 for connecting the battery 12 and a power device outside the vehicle, an electronic control unit 16 for controlling the entire vehicle such as management of the battery 12 and control of the motor 11 Is provided. As illustrated in FIG. 2, the battery 12 includes k battery modules M <b> 1 (k is an integer of 2 or more) formed by connecting a plurality of cells configured as nickel hydride secondary batteries or lithium ion secondary batteries in series. ~ Mk are configured as being connected in series. Hereinafter, for convenience of explanation, the battery 12 is referred to as a diagnostic battery 12. In addition, the diagnostic battery 12, a life battery described later, and a new battery may be collectively referred to simply as a battery. As illustrated in FIG. 2, the electronic control unit 16 includes a voltage Vb from a voltage sensor 13 a attached between terminals of the diagnostic battery 12, and terminals of the battery modules M <b> 1 to Mk of the diagnostic battery 12. Module voltages Vm1 to Vmk from voltage sensors S1 to Sk attached thereto, a battery current Ib from a current sensor 13b attached to a positive terminal of the diagnostic battery 12, and the like are inputted. The voltage Vm1 to Vmk, the current Ib, the usage area and usage of the diagnostic battery 12, the usage state of the diagnostic battery 12 including the travel history, and the like are stored. Here, examples of the use area include a cold area, a tropical area, a humid area, and a room temperature area. Examples of the use application include use ratios for each use such as commuting, shopping, and travel. As an example, there is an average travel distance of one trip from the system start to the system stop, an average of the duration of the system stop, and the like. The use area can be acquired by, for example, a car navigation system (not shown), or can be determined and acquired based on the environment such as the outside air temperature, humidity, and terrain. The usage can be determined and acquired from, for example, the travel time history of the automobile 11 or the travel time history of one trip.

  The remaining life diagnosis system 20 is installed in an arbitrary place such as a store or a home and can communicate with the electronic control unit 16 of the automobile 10, and is installed in an arbitrary place such as a store or a home and is on the vehicle side. A charging / discharging device 40 that is used for charging / discharging the diagnostic battery 12 in a state where the connector 14 and the device-side connector 42 are connected, and is capable of communicating with the terminal 30 and the electronic control unit 16, and a network 22 such as the Internet. And a server 50 capable of communicating with the terminal 30 via the terminal 30.

  The terminal 30 is configured as a general-purpose computer having a CPU 31, a ROM 32, a RAM 33, a hard disk drive 34, and the like, and includes a display 35, a keyboard 36, a mouse 37, and the like as input devices.

  The server 50 is configured as a general-purpose computer having a CPU 51, a RAM 52, a ROM 53, a hard disk drive 54, and the like. The hard disk drive 54 includes the usage state of a life battery that has reached the end of its life, the charge characteristics and discharge characteristics of the life battery, the life distance Rdmax that is the travel distance of the vehicle equipped with the life battery, and the life period of the life battery. A certain life time Rtmax is associated with and stored in a database as life information, and charging characteristics and discharge characteristics of a new battery, which is a new battery, are stored in a database as new information. Hereinafter, the charging characteristics and discharging characteristics, the life distance Rdmax, and the life time Rtmax of the life battery are collectively referred to as the life performance. An example of a database including life information and new product information is shown in FIG. In the example of FIG. 3, considering that the battery specifications differ depending on the vehicle model, the vehicle model with the life battery, the use state, and the life performance are associated with each other to create a database as life information, and the vehicle model with the new battery and the charging characteristics. And the discharge characteristics are associated with each other to be databased as new product information. Hereinafter, the charge characteristic and discharge characteristic of a life battery or a new battery will be described.

  As a charging characteristic of a life battery, in the embodiment, the battery is charged (hereinafter referred to as high-speed charging) with high power for a short time (for example, maximum allowable power that may charge the battery or slightly lower power). Module voltage of each battery module of the life battery when the first charge sequence process for charging the battery in the first predetermined state is performed on the life battery by a first charge sequence in which a short time high-speed charge is performed a plurality of times. A second charge sequence for charging a battery in a second predetermined state by a difference between the maximum value and the minimum value of the battery (hereinafter referred to as life charge voltage variation) ΔVmcli and a second charge sequence in which short-time high-speed charging is performed multiple times. The voltage of the life battery when the process is performed on the life battery (hereinafter referred to as the second life charge voltage) Vbcli2 Battery voltage (hereinafter, referred to as “lifetime battery voltage”) when the third charge sequence processing for charging the battery in the third predetermined state is performed on the life battery by the third charge sequence that performs high-speed charge for a longer time than the short-time high-speed charge. The fourth sequence process for charging the battery in the fourth predetermined state by the fourth charging sequence in which the battery is charged with a plurality of times of the behavior of Vbcli3 (each of which is referred to as the third life charging voltage) and the pulse current having different current values. The relationship between battery current and voltage (hereinafter referred to as lifetime charge current voltage characteristics) IVcli when used for the battery was used. Here, the first to fourth predetermined states are, for example, a state where the voltage of the battery is a predetermined voltage, a state where the smallest one of the module voltages of each battery module of the battery is a predetermined voltage, and the remaining capacity of the battery For example, the state is a predetermined remaining capacity. The first to fourth predetermined states may be the same state or different states.

  Further, as the charging characteristics of a new battery, in the embodiment, the difference between the maximum value and the minimum value of the module voltage of each battery module of the new battery when the first charging sequence process is performed on the new battery (hereinafter referred to as a new battery). ΔVmcnew (referred to as charging voltage variation), behavior of new battery voltage (hereinafter referred to as second new charge voltage) Vbcnew2 when the second charge sequence processing is performed on a new battery, and third charge sequence processing as new battery i The behavior of the voltage of the new battery (hereinafter referred to as the third new charging voltage) Vbcnew3 when performed on the battery, and the relationship between the current and voltage of the new battery when the fourth sequence process is performed on the new battery (hereinafter referred to as IV new) (referred to as a new charge current voltage characteristic). An example of the life charge voltage variation ΔVmcli and the new charge voltage variation ΔVmcnew is shown in FIG. 4, an example of the behavior of the second life charge voltage Vbcli2 and the second new charge voltage Vbcnew2 is shown in FIG. 5, and the third life charge voltage Vbcli3 and the An example of the behavior of the 3 new charge voltage Vbcnew3 is shown in FIG. 6, and an example of the life charge current voltage characteristic IVcli and the new charge current voltage characteristic Ivcnew is shown in FIG. 4 to 7 show the charging characteristics of a life battery or a new battery with the same vehicle type, that is, with the same specifications. In the example of FIG. 4, the new charge voltage variation ΔVmcnew is considered to be due to the manufacturing error of each cell or each battery module, and the lifetime charge voltage variation ΔVmcli is due to the use error for each cell or each battery module. It is thought that the change over time is taken into account. Moreover, in the examples of FIGS. 5 to 7, the deviation between the charging characteristics of the new battery and the charging characteristics of the life battery is due to the aging of the entire battery including the aging of each cell and each battery module. Conceivable.

  As the discharge characteristics of the life battery, in the embodiment, the battery is discharged (hereinafter referred to as high-speed discharge) by high power for a short time (for example, maximum allowable power that may discharge the battery or slightly lower power). Module voltage of each battery module of the life battery when the first discharge sequence processing for discharging the battery in the fifth predetermined state is performed on the life battery by the first discharge sequence in which high-speed discharge is performed a plurality of times for a short time. A second discharge sequence for discharging a battery in a sixth predetermined state by a difference between the maximum value and the minimum value (hereinafter referred to as variation in life discharge voltage) ΔVmdli or a second discharge sequence in which short-time high-speed discharge is performed a plurality of times When the process is performed on the life battery, the voltage of the life battery (hereinafter referred to as the second life discharge voltage) Vbdli2 Voltage of the life battery when the third discharge sequence processing for discharging the battery in the seventh predetermined state is performed on the life battery (hereinafter, The fourth sequence process for discharging the battery in the eighth predetermined state by the fourth discharge sequence in which the battery is discharged with a plurality of times of the behavior of Vbdli3, each of which has a different current value (referred to as the third life discharge voltage) The relationship between the battery current and voltage (hereinafter referred to as life discharge current-voltage characteristics) IVdli when used for the battery was used. Here, the fifth to eighth predetermined states may be the same state as any of the above-described first to fourth predetermined states, or may be different states.

  Further, as the discharge characteristics of the new battery, in the embodiment, the difference between the maximum value and the minimum value of the module voltage of each battery module of the new battery when the first discharge sequence process is performed on the new battery (hereinafter referred to as the new battery). ΔVmdnew (referred to as discharge voltage variation), the behavior of the new battery voltage (hereinafter referred to as second new discharge voltage) Vbnew2 when the second discharge sequence process is performed on the new battery, and the third discharge sequence process as the new battery i The behavior of the voltage of the new battery (hereinafter referred to as the third new discharge voltage) Vbdnew3 when performed on the battery, and the relationship between the current and voltage of the new battery when the fourth sequence processing is performed on the new battery (hereinafter referred to as the following) IVdnew) (referred to as a new discharge current-voltage characteristic). An example of the life discharge voltage variation ΔVmdli and the new product discharge voltage variation ΔVmdnew is shown in FIG. 8, an example of the behavior of the second life discharge voltage Vbdli2 and the second new product discharge voltage Vbdnew2 is shown in FIG. 9, and the third life discharge voltage Vbdli3 and the An example of the behavior of the 3 new discharge voltage Vbdnew3 is shown in FIG. 10, and an example of the life discharge current voltage characteristic IVdli and the new discharge current voltage characteristic is shown in FIG. 8 to 11 show the discharge characteristics of a life battery or a new battery with the same vehicle type, that is, with the same specifications. In the example of FIG. 8, the new discharge voltage variation ΔVmdnew is considered to be due to the manufacturing error of each cell or each battery module, and the life discharge voltage variation ΔVmdli depends on the use of the manufacturing error of each cell or each battery module. It is thought that the change over time is taken into account. Further, in the examples of FIGS. 9 to 11, the difference between the discharge characteristics of the new battery and the discharge characteristics of the life battery is due to the aging of the entire battery including the aging of each cell and each battery module. Conceivable.

  Next, the operation of the remaining life diagnosis system 20 configured as described above will be described. FIG. 12 shows the remaining state of the diagnostic battery 12 in a state where the automobile 10 is brought into a place (a store or the like) where the terminal 30 or the charging / discharging device 40 is installed and the vehicle side connector 14 and the device side connector 42 are connected. It is a flowchart which shows an example of the remaining life diagnosis routine performed by the terminal 30 when diagnosing a lifetime. In the embodiment, a case will be described in which the remaining life of the diagnostic battery 12 is diagnosed using the first charging sequence process by selection by the user or arbitrary selection by the terminal 30.

  When the remaining life diagnosis routine is executed, the CPU 31 of the terminal 30 displays information related to the diagnostic battery 12 (hereinafter referred to as diagnosis) such as the vehicle type of the automobile 10 and the usage state of the diagnostic battery 12 (use area, usage, travel history, etc.). Is requested from the electronic control unit 16 of the automobile 10 (step S100), and when diagnostic battery information is received from the electronic control unit 16 (step S110), the received diagnostic battery information is transmitted to the server 50. (Step S120). The CPU 51 of the server 50 that has received the diagnostic battery information, as exemplified in the data search routine of FIG. 13, includes the vehicle type and usage state of the life battery corresponding to the diagnostic battery information from the database stored in the hard disk drive 54. (Hereinafter, referred to as a corresponding region) is searched for (step S300), and in the searched corresponding region, a life record (in the embodiment, a life charge voltage variation ΔVmcli as a charge characteristic, a life distance Rdmax, a life time Rtmax) ), The terminal 30 transmits the service life record and the charge characteristics of the new battery (in the embodiment, the new charge voltage variation ΔVmcnew) (steps S310 and S320). The empty information, which is the information shown, is transmitted to the terminal 30 (step S310, S330).

  When receiving data from the server 50 (step S130), the CPU 31 of the terminal 30 determines whether the data is a lifetime record or empty information (step S140). When the received data is empty information, the diagnosis is performed. The fact that the remaining life of the battery 12 cannot be calculated (hereinafter referred to as remaining life calculation impossibility information) is output to the display 35 (step S200), and this routine is terminated.

  On the other hand, when the received data is a track record of life, an instruction for performing a preparation process for setting the state of the diagnostic battery 12 to the first predetermined state is transmitted to the charging / discharging device 40 and the electronic control unit 16 (step S150). ). The charging / discharging device 40 and the electronic control unit 16 that have received this instruction perform preparation processing so that the state of the diagnostic battery 12 becomes the first predetermined state while communicating with each other, and when the preparation processing is completed, the preparation processing is performed. A completion signal is transmitted to the terminal 30. The preparation process is performed in order to make the acquisition conditions of the life charge voltage variation ΔVmcli and the later-described diagnostic charge voltage variation ΔVmccu uniform.

  When receiving the preparation process completion signal (step S160), the CPU 31 of the terminal 30 transmits an instruction for causing the diagnostic battery 12 to perform the first charging sequence process to the charging / discharging device 40 and the first charging sequence process. Is transmitted to the electronic control unit 16 to obtain the diagnostic charging voltage variation ΔVmccu as the difference between the maximum value and the minimum value of the module voltages Vm1 to Vmk of the diagnostic battery 12 at the time of execution (step S170). The charging / discharging device 40 that has received the instruction executes a first charging sequence process. The electronic control unit 16 that has received the instruction obtains the diagnostic charging voltage variation ΔVmccu using the module voltages Vm1 to Vmk of the diagnostic battery 12 detected by the voltage sensors S1 to Sk during the execution of the first charging sequence. It transmits to the terminal 30. An example of the diagnostic charge voltage variation ΔVmccu is shown in FIG. In FIG. 14, the new charge voltage variation ΔVmcnew and the life charge voltage variation ΔVmcli received from the server 50 are also illustrated for reference. The new charge voltage variation ΔVmcnew is considered to be due to the manufacturing error of each cell and each battery module, and the diagnostic charge voltage variation ΔVmccu and the life charge voltage variation ΔVmcli are used for the manufacturing error of each cell and each battery module. It is considered that the secular change due to is taken into account.

  When the CPU 31 of the terminal 30 receives the diagnostic charging voltage variation ΔVmccu from the electronic control unit 16 (step S180), the diagnostic charging voltage variation ΔVmccu received from the electronic control unit 16 and the lifetime charging voltage variation ΔVmcli received from the server 50 are detected. , Life distance Rdmax, life time Rtmax, new charge voltage variation ΔVmcnew, and the remaining life distance Rd as the distance that the vehicle 10 can travel until the diagnostic battery 12 reaches the end of its life according to the following equation (1): And the remaining life time Rt as the time until the diagnostic battery 12 reaches the end of life is calculated according to the equation (2) and output to the display 35 (step S190), and this routine is terminated. By calculating the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 in this way, the remaining life of the diagnostic battery 12 is taken into account in consideration of manufacturing errors of each cell and each battery module and aging due to use. The distance Rd and the remaining life time Rt can be calculated more appropriately. When battery manufacturing errors are not taken into account (when the battery voltage is considered to be the same as the module voltage of each battery module), it is not necessary to receive the new charging voltage variation ΔVmcnew from the server 50. In (1) and Equation (2), the new charge voltage variation ΔVmcnew may be set to 0.

Rd = Rdmax-Rdmax ・ (ΔVmccu-ΔVmnew) / (ΔVmcli-ΔVmcnew) (1)
Rt = Rtmax-Rtmax ・ (ΔVmccu-ΔVmnew) / (ΔVmcli-ΔVmcnew) (2)

  According to the remaining life diagnosis system 20 of the embodiment described above, the use state of the life battery and the life performance (charging characteristics, discharging characteristics, life distance Rdmax, life time Rtmax) are associated with each other to prepare a database as life information. When diagnosing the remaining life of the diagnostic battery 12, a life performance record (life charge voltage variation ΔVmcli or the like) is acquired from the corresponding area corresponding to the diagnostic battery information in the database, and the first charge sequence processing is performed. The diagnostic charge voltage variation ΔVmccu when performed on the diagnostic battery 12 is acquired, and the remaining life distance Rd and the remaining life time of the diagnostic battery 12 are obtained from the relationship between the acquired diagnostic charge voltage variation ΔVmccu and the lifetime charge voltage variation ΔVmcli. Since Rt is calculated, diagnosis of the remaining life of the diagnostic battery 12 is more appropriate. Can Nau. In addition, the diagnostic charging voltage variation ΔVmccu when the first charging sequence process for charging the battery in the first predetermined state is performed on the diagnostic battery 12 by the first charging sequence in which short-time high-speed charging is performed a plurality of times is obtained. Since the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated using this, the remaining life of the diagnostic battery 12 can be diagnosed relatively quickly.

  In the remaining life diagnosis system 20 of the embodiment, when the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated, the life as the data of the corresponding area in the database stored in the hard disk drive 54 of the server 50 is used. Although the charging voltage variation ΔVmcli and the new charging voltage variation ΔVmcnew are used, the behavior of the second life charging voltage Vbcli2 and the second new charging voltage Vbnew2 may be used, and the third life charging voltage Vbcli3 and the third new charging voltage Vbcli3 may be used. The behavior of the charge voltage Vbcnew3 may be used, the life charge current voltage characteristic IVcli and the new charge current voltage characteristic IVcnew may be used, or the life discharge voltage variation ΔVmdli and the new discharge voltage variation ΔVmdnew may be used. Alternatively, the behavior of the second life discharge voltage Vbdli2 and the second new discharge voltage Vbdnew2 may be used, or the behavior of the third life discharge voltage Vbdli3 and the third new discharge voltage Vbdnew3 may be used. The life discharge current voltage characteristic IVdli and the new discharge current voltage characteristic IVdnew may be used. Hereinafter, it demonstrates in order.

  When using the behavior of the second life charge voltage Vbcli2 and the second new charge voltage Vbcnew2, the CPU 31 of the terminal 30 sends the behavior of the second life charge voltage Vbcli2 from the server 50, the behavior of the second new charge voltage Vbcnew2, the life distance Rdmax, When the life time Rtmax is received and the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the second charging sequence process is transmitted to the charging / discharging device 40 and the diagnosis at the time of executing the second charging sequence process is performed. When an instruction for acquiring the behavior of the voltage of the battery 12 (hereinafter referred to as the second diagnostic charging voltage) Vbccu2 is transmitted to the electronic control unit 16 and the second diagnostic charging voltage Vbccu2 is received from the electronic control unit 16, the second The behavior of the new charge voltage Vbcnew2 and the second diagnosis charge voltage Vbccu2 Calculating the remaining life distance Rd and remaining life time Rt of a diagnostic battery 12 by using the second life charging voltage behavior and lifetime distance Rdmax and lifetime of Vbcli2 Rtmax. An example of the behavior of the second new charge voltage Vbcnew2, the behavior of the second diagnostic charge voltage Vbccu2, and the behavior of the second life charge voltage Vbcli2 is shown in FIG. In this case, for example, the diagnostic charge voltage difference ΔVbccu (see FIG. 15) as a difference between the diagnostic charge voltage Vbccu2 and the new charge voltage Vbcnew2 at the predetermined number of times (for example, the second) high-speed charging end time tcref, Diagnostic by the following equation (3) using the lifetime charge voltage difference ΔVbcli (see FIG. 15) as the difference between the second lifetime charge voltage Vbcli2 and the new charge voltage Vbcnew, and the lifetime distance Rdmax and lifetime time Rtmax. The remaining life distance Rd of the diagnostic battery 12 can be calculated, and the remaining life time Rt of the diagnostic battery 12 can be calculated by the equation (4).

Rd = Rdmax-Rdmax ・ ΔVbccu / ΔVbcli (3)
Rt = Rtmax-Rtmax ・ ΔVbccu / ΔVbcli (4)

  When using the behavior of the third life charge voltage Vbcli3 and the third new charge voltage Vbcnew3, the CPU 31 of the terminal 30 sends the behavior of the third life charge voltage Vbcli3, the behavior of the third new charge voltage Vbcnew3, the life distance Rdmax, When the life time Rtmax is received and the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the third charging sequence process is transmitted to the charging / discharging device 40, and at the time of executing the third charging sequence process When an instruction for acquiring the behavior of the voltage of the battery 12 (hereinafter referred to as the third diagnostic charging voltage) Vbccu3 is transmitted to the electronic control unit 16 and the third diagnostic charging voltage Vbccu3 is received from the electronic control unit 16, the third Behavior of new charge voltage Vbcnew3 and third diagnosis charge voltage Vbccu3 Calculating a remaining life distance Rd and remaining life time Rt of a diagnostic battery 12 by using the the behavior and lifetime distance Rdmax and lifetime of the third lifetime charging voltage Vbcli3 Rtmax. An example of the behavior of the third new charge voltage Vbcnew3, the behavior of the third diagnostic charge voltage Vbccu3, and the behavior of the third life charge voltage Vbcli3 is shown in FIG. In this case, for example, the time required for the third diagnostic charge voltage Vbccu3 to reach the predetermined voltage Vbcref after the start of the third charge sequence process and the third new charge voltage Vbcnew3 reaches the predetermined voltage Vbcref from the start of the third charge sequence process. Diagnosis time difference Δtccu (see FIG. 16) as a difference from the time required until the third charging sequence processing, the time required for the third life charging voltage Vbcli3 to reach the predetermined voltage Vbcref from the start of the third charging sequence processing, and the third charging sequence processing Using the life time difference Δtcli (see FIG. 16) as a difference from the time required for the new charge voltage Vbcnew to reach the predetermined voltage Vbcref from the start of life, the life distance Rdmax, and the life time Rtmax, the following equation (5) To calculate the remaining life distance Rd of the diagnostic battery 12 and Further, the remaining life time Rt of the diagnostic battery 12 can be calculated.

Rd = Rdmax-Rdmax ・ Δtccu / Δtcli (5)
Rt = Rtmax-Rtmax ・ Δtccu / Δtcli (6)

  When using the lifetime charge current voltage characteristic IVcli and the new charge current voltage characteristic IVcnew, the CPU 31 of the terminal 30 receives the lifetime charge current voltage characteristic IVcli, the new charge current voltage characteristic IVcnew, the lifetime distance Rdmax, and the lifetime time Rtmax from the server 50. When the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the fourth charging sequence process is transmitted to the charging / discharging device 40, and the current of the diagnostic battery 12 during the execution of the fourth charging sequence process is determined. When a command for acquiring the behavior of IVccu (hereinafter referred to as diagnostic charge current voltage characteristic) with respect to the voltage is transmitted to the electronic control unit 16 and the diagnostic charge current voltage characteristic IVccu is received from the electronic control unit 16, a new charge current is obtained. Voltage characteristics IVcnew and diagnostic charging current voltage characteristics IVcc And calculating a remaining life distance Rd and remaining life time Rt life charge current-voltage characteristic IVcli and lifetime distance Rdmax and lifetime Rtmax diagnostic battery 12 with. An example of a new charge current voltage characteristic IVcnew, a diagnostic charge current voltage characteristic IVccu, and a life charge current voltage characteristic IVcli is shown in FIG. In this case, for example, a diagnosis tendency difference Δaccu (see FIG. 17) as a difference in tendency (for example, voltage change amount with respect to current change amount) between the diagnostic charge current voltage characteristic IVccu and the new charge current voltage characteristic IVcnew, and the lifetime Diagnosis by the following equation (7) using the life tendency difference Δacli (see FIG. 17) as the difference in tendency between the charge current voltage characteristic IVcli and the new charge current voltage characteristic IVcnew, the life distance Rdmax, and the life time Rtmax. In addition to calculating the remaining life distance Rd of the battery 12 for diagnosis, the remaining life time Rt of the battery 12 for diagnosis can be calculated by the equation (8).

Rd = Rdmax-Rdmax ・ Δaccu / Δacli (7)
Rt = Rtmax-Rtmax ・ Δaccu / Δacli (8)

  When using the life discharge voltage variation ΔVmdli and the new discharge voltage variation ΔVmdnew, the CPU 31 of the terminal 30 receives the life discharge voltage variation ΔVmdli, the new discharge voltage variation ΔVmdnew, the life distance Rdmax, and the life time Rtmax from the server 50, and the preparation process is performed. When completed, an instruction for causing the diagnostic battery 12 to perform the first discharge sequence process is transmitted to the charging / discharging device 40, and the module voltages Vm1 to Vmk of the diagnostic battery 12 during the execution of the first discharge sequence process are transmitted. When an instruction for acquiring the diagnostic discharge voltage variation ΔVmdcu as a difference between the maximum value and the minimum value is transmitted to the electronic control unit 16 and the diagnostic discharge voltage variation ΔVmdcu is received from the electronic control unit 16, the life discharge voltage variation ΔVmdli and new Using the discharge voltage variation ΔVmdnew, the life distance Rdmax, and the life time Rtmax, the remaining life distance Rd of the diagnostic battery 12 is calculated by the following expression (9) and the remaining life time Rt of the diagnosis battery 12 is calculated by the expression (10). Calculate An example of the diagnostic charge voltage variation ΔVmdcu and the life discharge voltage variation ΔVmdli is shown in FIG. Note that when the battery manufacturing error is not considered (when the battery voltage is considered to be the same as the module voltage of each battery module), it is not necessary to receive the new discharge voltage variation ΔVmdnew from the server 50. In (9) and Expression (10), the new discharge voltage variation ΔVmdnew may be set to 0.

Rd = Rdmax-Rdmax ・ (ΔVmdcu-ΔVmdnew) / (ΔVmdli-ΔVmdnew) (9)
Rt = Rtmax-Rtmax ・ (ΔVmdcu-ΔVmdnew) / (ΔVmdli-ΔVmdnew) (10)

  When using the behavior of the second life discharge voltage Vbdli2 and the second new discharge voltage Vbdnew2, the CPU 31 of the terminal 30 sends the behavior of the second life discharge voltage Vbdli2, the behavior of the second new discharge voltage Vbdnew2, the life distance Rdmax, When the life time Rtmax is received and the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the second discharge sequence process is transmitted to the charging / discharging device 40 and the diagnosis at the time of executing the second discharge sequence process is performed. When an instruction for acquiring the behavior of the voltage of the battery 12 (hereinafter referred to as the second diagnostic discharge voltage) Vbccu2 is transmitted to the electronic control unit 16 and the second diagnostic discharge voltage Vbdcu2 is received from the electronic control unit 16, the second The behavior of the new discharge voltage Vbdnew2 and the second diagnosis discharge voltage Vbdcu2 Calculating the remaining life distance Rd and remaining life time Rt of a diagnostic battery 12 by using the second life discharge behavior of the voltage Vbdli2 and lifetime distance Rdmax and lifetime RTmax. An example of the behavior of the second new discharge voltage Vbdnew2, the behavior of the second diagnostic discharge voltage Vbdcu2, and the behavior of the second life discharge voltage Vbdli2 is shown in FIG. In this case, for example, a diagnostic discharge voltage difference ΔVbdcu (see FIG. 19) as a difference between the diagnostic discharge voltage Vbdcu and the new discharge voltage Vbdnew at the end time tdref of the fast discharge at a predetermined number of times (for example, the second time) The battery for diagnosis by the following equation (11) using the life discharge voltage difference ΔVbdli (see FIG. 19) as the difference between the life discharge voltage Vbdli and the new product discharge voltage Vbdnew, the life distance Rdmax, and the life time Rtmax. In addition to calculating the remaining life distance Rd of 12, it is possible to calculate the remaining life time Rt of the diagnostic battery 12 according to the equation (12).

Rd = Rdmax-Rdmax ・ ΔVbdcu / ΔVbdli (11)
Rt = Rtmax-Rtmax ・ ΔVbdcu / ΔVbdli (12)

  When using the behavior of the third life discharge voltage Vbdli3 and the third new discharge voltage Vbdnew3, the CPU 31 of the terminal 30 sends the behavior of the third life discharge voltage Vbdli3, the behavior of the third new discharge voltage Vbdnew3, the life distance Rdmax, When the life time Rtmax is received and the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the third discharge sequence process is transmitted to the charging / discharging device 40 and the diagnosis at the time of executing the third discharge sequence process is performed. When an instruction for acquiring the behavior of the voltage of the battery 12 (hereinafter referred to as the third diagnostic discharge voltage) Vbdcu3 is transmitted to the electronic control unit 16 and the third diagnostic discharge voltage Vbdcu3 is received from the electronic control unit 16, the third Behavior of new discharge voltage Vbdnew3 and third diagnosis discharge voltage Vbdcu3 Calculating a remaining life distance Rd and remaining life time Rt of a diagnostic battery 12 by using the the third lifetime discharge behavior of the voltage Vbdli3 and lifetime distance Rdmax and lifetime RTmax. An example of the behavior of the third new discharge voltage Vbdnew3, the behavior of the third diagnostic discharge voltage Vbdcu3, and the behavior of the third life discharge voltage Vbdli3 is shown in FIG. In this case, for example, the time required from the start of the third discharge sequence process to the third diagnostic discharge voltage Vbdcu3 reaching the predetermined voltage Vbdref and the third new discharge voltage Vbdnew3 from the start of the third discharge sequence process to the predetermined voltage Vbdref. Diagnosis time difference Δtdcu (see FIG. 20) as a difference from the time required until the third discharge sequence process, the time required for the third life discharge voltage Vbdli3 to reach the predetermined voltage Vbdref from the start of the third discharge sequence process, and the third discharge sequence process Using the life time difference Δtdli (see FIG. 20) as a difference from the time required until the new discharge voltage Vbdnew reaches the predetermined voltage Vbdref, the life distance Rdmax, and the life time Rtmax. The remaining life distance Rd of the diagnostic battery 12 is calculated by ) To calculate the remaining life time Rt of the diagnostic battery 12.

Rd = Rdmax-Rdmax ・ Δtdcu / Δtdli (13)
Rt = Rtmax-Rtmax ・ Δtdcu / Δtdli (14)

  When the life discharge current voltage characteristic IVdli and the new discharge current voltage characteristic IVdnew are used, the CPU 31 of the terminal 30 receives the life discharge current voltage characteristic IVdli, the new discharge current voltage characteristic IVdnew, the life distance Rdmax, and the life time Rtmax from the server 50. When the preparation process is completed, an instruction for causing the diagnostic battery 12 to perform the fourth discharge sequence process is transmitted to the charging / discharging device 40, and the current of the diagnostic battery 12 when the fourth discharge sequence process is executed When an instruction for acquiring the behavior of IVdcu (hereinafter referred to as diagnostic discharge current voltage characteristic) with respect to the voltage is transmitted to the electronic control unit 16 and the diagnostic discharge current voltage characteristic IVdcu is received from the electronic control unit 16, a new discharge current is obtained. Voltage characteristic IVdnew and diagnostic discharge current voltage characteristic IVdc And calculating a remaining life distance Rd and remaining life time Rt of life discharge current-voltage characteristics IVdli and lifetime distance Rdmax and lifetime diagnostic battery 12 by using the RTmax. An example of a new discharge current voltage characteristic IVdnew, a diagnostic discharge current voltage characteristic IVdcu, and a life discharge current voltage characteristic IVdli is shown in FIG. In this case, for example, a diagnosis tendency difference Δadcu (see FIG. 21) as a difference in tendency (for example, voltage change amount with respect to current change amount) between the diagnostic discharge current voltage characteristic IVdcu and the new discharge current voltage characteristic IVdnew, and the life Diagnosis by the following equation (15) using the life trend difference Δadli (see FIG. 21), the life distance Rdmax, and the life time Rtmax as the difference between the trends of the discharge current voltage characteristics IVdli and the new discharge current voltage characteristics IVdnew. The remaining life distance Rd of the diagnostic battery 12 can be calculated, and the remaining life time Rt of the diagnostic battery 12 can be calculated by the equation (16).

Rd = Rdmax-Rdmax ・ Δadcu / Δadli (15)
Rt = Rtmax-Rtmax ・ Δadcu / Δadli (16)

  As described above, when calculating the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 using the behavior of the second life charging voltage Vbcli2 and the second new charge voltage Vbcnew2, the third life charge voltage Vbcli3 and the third new charge When the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated using the behavior of the voltage Vbcnew3, the remaining life distance of the diagnostic battery 12 is calculated using the life charge current voltage characteristic IVcli and the new charge current voltage characteristic IVcnew. When calculating Rd and the remaining life time Rt, when calculating the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 using the life discharge voltage variation ΔVmdli and the new discharge voltage variation ΔVmdnew, the second life discharge voltage Vbdli2 And the diagnostic bar using the behavior of the second new discharge voltage Vbdnew2. When calculating the remaining life distance Rd and remaining life time Rt of the battery 12, the remaining life distance Rd and remaining life time Rt of the diagnostic battery 12 are calculated using the behavior of the third life discharge voltage Vbdli3 and the third new discharge voltage Vbdnew3. In the case of calculation, the case where the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated using the life discharge current voltage characteristics IVdli and the new discharge current voltage characteristics IVdnew has been described in order. In the same manner as in the embodiment, considering the manufacturing error of each cell or each battery module, aging due to use, aging of the battery as a whole including these aging, etc. The lifetime Rt can be calculated more appropriately.

  In the remaining life diagnosis system 20 according to the embodiment, the server 50 transmits empty information to the terminal 30 when there is no lifetime record in the searched corresponding area. However, even when there is no lifetime record in the searched corresponding area, When there is a lifetime record in a peripheral area that is a peripheral area of the corresponding area (for example, an area where the usage and travel history are the same and the usage area is adjacent), the lifetime record of the peripheral area is stored in the terminal 30. It may be transmitted. In this way, the remaining life of the diagnostic battery 12 can be secured from an opportunity that can be calculated.

  In the remaining life diagnosis system 20 according to the embodiment, the server 50 transmits empty information to the terminal 30 when there is no life record in the searched corresponding area. It may be created and stored by analysis or the like. In this way, since no empty information is transmitted from the server 50 to the terminal 30, the remaining life of the diagnostic battery 12 can be secured from an opportunity that can be calculated.

  In the remaining life diagnosis system 20 of the embodiment, as the charge characteristics and discharge characteristics of the life battery of the database and the new battery, the behavior of the life charge voltage variation ΔVmcli, the behavior of the second life charge voltage Vbcli2, the behavior of the third life charge voltage Vbcli3, Life charge current voltage characteristic IVcli, new charge voltage variation ΔVmcnew, second new charge voltage Vbcnew2 behavior, third new charge voltage Vbcnew3 behavior, new charge current voltage characteristic IVcnew, life discharge voltage variation ΔVmdli, second life discharge voltage Vbdli2 Behavior, third life discharge voltage Vbdli3 behavior, life discharge current voltage characteristics IVdli, new discharge voltage variation ΔVmdnew, second new discharge voltage Vbdnew2, third new discharge voltage Vbdnew3 behavior, new discharge current voltage characteristics IVdn It is assumed that w is stored in the hard disk drive 54 of the server 50, but some of these may not be stored, and instead of or in addition to these, other charge characteristics and discharge of a life battery or a new battery The characteristics (for example, the behavior of the battery voltage of each battery module and the cell voltage of each cell of the life battery and the new battery instead of the behavior of the voltage of the life battery and the new battery (voltage as the whole battery)) It may be stored. Even if the contents of the charge characteristics and discharge characteristics of the diagnostic battery 12 stored in the hard disk drive 54 are different from those in the embodiment, the charge characteristics and discharge characteristics of the life battery and new battery stored in the hard disk drive 54 are changed. By selecting and executing the charging sequence process and the discharging sequence process, the charging characteristics and discharging characteristics of the diagnostic battery 12 can be acquired, and the remaining life of the diagnostic battery 12 can be diagnosed.

  In the remaining life diagnosis system 20 of the embodiment, the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated, but only one of them may be calculated.

  In the remaining life diagnosis system 20 of the embodiment, the calculated remaining life distance Rd and remaining life time Rt of the diagnostic battery 12 are output to the display 35, but instead of or in addition to this, the hard disk drive of the terminal 30 34 or the hard disk drive 54 of the server 50 may be stored. In this case, it is preferable to store the information in the hard disk drive 34 or the hard disk drive 54 in association with the vehicle type or usage state.

  In the remaining life diagnosis system 20 according to the embodiment, the diagnostic battery 12 mounted on the automobile 10 is assumed to have k (k is an integer of 2 or more) battery modules M1 to Mk connected in series. It may be configured by individual modules. In this case, when calculating the remaining life distance Rd and the remaining life time Rt, characteristics other than the module voltage variation (such as life charge voltage variation ΔVmcli) among the charging characteristics and discharging characteristics of the battery may be used.

  In the remaining life diagnosis system 20 of the embodiment, the remaining life of the battery 12 mounted on the automobile 10 is diagnosed. However, a battery (hereinafter referred to as “removing battery”) that has been mounted on an electric vehicle or a hybrid vehicle in the past and is now removed. It is good also as what diagnoses the remaining life, such as a vehicle-mounted battery. In this way, an in-vehicle battery that is not new but has not reached the end of its life can be reused.

  In the remaining life diagnosis system 20 of the embodiment, the charging / discharging device 40 used for charging / discharging the battery 12 is provided. Instead of this, a charging device used for charging the battery 12, a battery, It is good also as a thing provided with the discharge device etc. which are used in order to discharge 12. In the embodiment, the charging / discharging device 40 is provided outside the automobile 10. However, equipment mounted on the automobile 10, for example, the motor 11, an auxiliary machine (not shown), and the automobile 10 receive power from the engine and the engine. A combination of an engine and a generator in the case of having a power generator that generates power by using the power generator may function as the charge / discharge device 40.

  In the remaining life diagnosis system 20 of the embodiment, the remaining life of the diagnostic battery 12 is diagnosed by the terminal 30 outside the automobile 10. However, the electronic control unit 16 mounted on the automobile 10 functions as the terminal 30. It is good. FIG. 22 is a block diagram showing an outline of the configuration of the automobile 110 and the remaining life diagnosis system 120 when the electronic control unit 16 functions as the terminal 30 and the motor 11 functions as the charge / discharge device 40.

  In the embodiment, the remaining life diagnosis system 20 including the terminal 30, the server 50, and the charge / discharge device 40 has been described. However, the terminal 30 and the server 50 may be configured as one device, The charging / discharging device 40 may be configured as one device, and the terminal 30, the server 50, and the charging / discharging device 40 may be configured as one device.

  In the embodiment, the remaining life diagnosis system 20 has been described. However, the remaining life diagnosis method for diagnosing the remaining life of the diagnostic battery 12 may be used.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. With regard to the first remaining life diagnosis system of the present invention, in the embodiment, life information relating the use state of the life battery and the life performance (charging characteristics, discharging characteristics, life distance Rdmax, life time Rtmax) and new battery information The hard disk drive 54 of the server 50 that stores new product information that is charging characteristics and discharging characteristics as a database corresponds to the “information storage unit”, and obtains diagnostic battery information from the electronic control unit 16 in the remaining life diagnosis routine of FIG. The terminal 30 that executes the processes of steps S110 and S120 and executes the processes of steps S170 and S180 of the remaining life diagnosis routine of FIG. 12 that acquires the diagnostic charge voltage variation ΔVmccu from the electronic control unit 16 corresponds to the “information acquisition means”. The life charge voltage variation ΔVmcli from the server 50 or a new product The process of step S190 of the remaining life diagnosis routine of FIG. 12 for calculating the remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 using the charging voltage variation ΔVmcnew and the diagnostic charging voltage variation ΔVmccu from the electronic control unit 16 is performed. The terminal 30 to be executed corresponds to “diagnosis means”. With regard to the second remaining life diagnosis system of the present invention, in the embodiment, a server that stores life information associating the use state and life performance of a life battery and new information that is charge characteristics and discharge characteristics of a new battery as a database. The 50 hard disk drives 54 correspond to “information storage means”, and the terminal 30 that acquires diagnostic battery information from the electronic control unit 16 and acquires the diagnostic discharge voltage variation ΔVmccu from the electronic control unit 16 serves as the “information acquisition means”. The remaining life distance Rd and the remaining life time Rt of the diagnostic battery 12 are calculated using the life discharge voltage variation ΔVmdli from the server 50, the new discharge voltage variation ΔVmdnew and the diagnosis discharge voltage variation ΔVmdcu from the electronic control unit 16. The terminal 30 that corresponds to “diagnostic means”.

  Here, in the first remaining life diagnosis system, as the “information storage unit”, the life information that associates the use state of the life battery with the life performance and the new information that is the charge characteristic and discharge characteristic of the new battery are used as a database. The battery 50 is not limited to the hard disk drive 54 of the server 50 to be stored, and the life battery is charged when the life battery is charged by the use state of the life battery, which is the battery that has reached the end of life, and a predetermined charging sequence determined in advance. Any device may be used as long as it is stored in association with the lifetime charge characteristics. The “information acquisition means” is not limited to the terminal 30 that acquires diagnostic battery information from the electronic control unit 16 and acquires the diagnostic charging voltage variation ΔVmccu from the electronic control unit 16. Any diagnostic charging characteristic can be used as long as it acquires the diagnostic charging characteristic that is the charging characteristic of the diagnostic battery when the diagnostic battery is charged by a predetermined charging sequence. As the “diagnostic means”, the remaining life distance Rd and the remaining life of the diagnostic battery 12 using the life charge voltage variation ΔVmcli from the server 50, the new charge voltage variation ΔVmcnew, and the diagnosis charge voltage variation ΔVmccu from the electronic control unit 16 are used. It is not limited to the terminal 30 for calculating the time Rt, but is associated with the acquired diagnostic charging characteristics and the usage state of the life battery corresponding to the usage state of the diagnostic battery among the information stored in the information storage means. As long as the remaining life of the diagnostic battery can be diagnosed from the relationship with the corresponding life charge characteristics, which is a long life charge characteristic, any method may be used.

  In the second remaining life diagnosis system, the “information storage means” is a server that stores, as a database, life information that associates the use state of the life battery with the life performance, and new information that is discharge characteristics and discharge characteristics of the new battery. It is not limited to the 50 hard disk drives 54, but is the discharge characteristics of the life battery when the life battery is discharged by a predetermined use discharge sequence determined in advance and a life battery that has reached the end of its life. Any device may be used as long as it stores the life discharge characteristics in association with each other. The “information acquisition means” is not limited to the terminal 30 that acquires diagnostic battery information from the electronic control unit 16 and acquires the diagnostic discharge voltage variation ΔVmdcu from the electronic control unit 16. Any diagnostic discharge characteristic may be used as long as it obtains the diagnostic discharge characteristic that is the discharge characteristic of the diagnostic battery when the diagnostic battery is discharged by a predetermined discharge sequence. As the “diagnostic means”, the remaining life distance Rd and the remaining life of the diagnostic battery 12 using the life discharge voltage variation ΔVmdli from the server 50, the new discharge voltage variation ΔVmdnew, and the diagnosis discharge voltage variation ΔVmdcu from the electronic control unit 16 are used. It is not limited to the terminal 30 that calculates the time Rt, but is associated with the acquired diagnostic discharge characteristics and the usage state of the life battery corresponding to the usage state of the diagnostic battery among the information stored in the information storage means. As long as the remaining life of the diagnostic battery can be diagnosed from the relationship with the corresponding life discharge characteristics which are the life discharge characteristics, any method may be used.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

  The present invention is applicable to the automobile industry and the like.

  10,110 Automobile, 11 Motor, 12 Battery (diagnostic battery), 13a Voltage sensor, 13b Current sensor, 14 Vehicle side connector, 16 Electronic control unit, 20, 120 Remaining life diagnosis system, 22 Network, 30 terminal, 31 CPU , 32 ROM, 33 RAM, 34 hard disk drive, 35 display, 36 keyboard, 37 mouse, 40 charging / discharging device, 42 device side connector, 50 server, 51 CPU, 52 RAM, 53 ROM, 54 hard disk drive, M1-Mk battery Module, S1-Sk voltage sensor.

Claims (16)

A remaining life diagnosis method for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that travels using power from an electric motor,
(A) In the information storage means for storing information, the usage state of the life battery that is the battery that has reached the end of life, and the charge characteristics of the life battery when the life battery is charged by a predetermined charging sequence determined in advance Prepare by associating and memorizing a certain life charge characteristic,
(B) obtaining a use state of the diagnostic battery and a diagnostic charge characteristic which is a charge characteristic of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence;
(C) The life charging associated with the use state of the life battery corresponding to the use state of the acquired diagnostic battery among the acquired diagnostic charge characteristics and the information stored in the information storage means The remaining life of the diagnostic battery is diagnosed from the relationship with the corresponding life charge characteristics that are characteristics,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 1,
The diagnostic battery and the life battery are composed of a plurality of modules,
In the step (a), the information storage is performed by associating a variation in voltage of each module of the lifetime battery when the lifetime battery is charged by the predetermined charging sequence with the usage state of the lifetime battery as the lifetime charge characteristic. Memorizing the means,
The step (b) is a step of obtaining, as the diagnostic charge characteristic, a voltage variation of each module of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence.
Remaining life diagnosis method. The remaining life diagnosis method according to claim 1,
In the step (a), the behavior of the life charge voltage, which is the voltage of the life battery when the life battery is charged by the predetermined charge sequence, is associated with the use state of the life battery as the life charge characteristic. A new charge characteristic which is a charge characteristic of the new battery is stored in the information storage means and the behavior of the new charge voltage which is the voltage of the new battery when the new battery which is a new battery is charged by the predetermined charging sequence. And storing it in the information storage means as
The step (b) is a step of acquiring, as the diagnostic charge characteristic, a behavior of a diagnostic charge voltage that is a voltage of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence;
The step (c) includes a diagnosis deviation which is a deviation between the behavior of the acquired diagnostic charging voltage and the behavior of a new charging voltage stored in the information storage means, and a correspondence stored in the information storage means. It is a step of diagnosing the remaining life of the diagnostic battery from the relationship between the behavior of the life charge voltage as the life charge characteristic and the life deviation that is a deviation between the behavior of the new charge voltage stored in the information storage means. ,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 3,
In the step (c), the difference between the diagnostic charging voltage and the new charging voltage at a predetermined timing in the predetermined charging sequence is set as the diagnostic deviation, and the life charging voltage and the new charging voltage at the predetermined timing are used. And diagnosing the remaining life of the diagnostic battery with the difference in life as the life gap,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 3,
The step (c) requires time from the start of the predetermined charging sequence until the diagnostic charging voltage reaches the predetermined voltage and from the start of the predetermined charging sequence until the new charging voltage reaches the predetermined voltage. The difference from the time is used as the diagnosis deviation, and the time required from the start of the predetermined charging sequence until the lifetime charging voltage reaches the predetermined voltage and the new charging voltage from the start of the predetermined charging sequence are the predetermined voltage. Is a step of diagnosing the remaining life of the diagnostic battery using the difference from the time required to reach
Remaining life diagnosis method. The remaining life diagnosis method according to claim 1,
The step (a) uses the lifetime battery as a lifetime charge current characteristic, which is a relationship between a current and a voltage of the lifetime battery when the lifetime battery is charged by the predetermined charging sequence. A new charge current voltage characteristic which is a relation between a current and a voltage of the new battery when the new battery which is a new battery is charged by the predetermined charging sequence and is stored in the information storage means in association with the state. Storing the information storage means as a new charge characteristic which is a charge characteristic of the new battery,
The step (b) is a step of acquiring, as the lifetime charge characteristic, a diagnostic charge current voltage characteristic that is a relationship between a current and a voltage of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence. And
The step (c) includes a diagnosis deviation which is a deviation between the acquired diagnostic charging current voltage characteristic and a new charging current voltage characteristic stored in the information storage means, and a correspondence stored in the information storage means. It is a step of diagnosing the remaining life of the diagnostic battery from the relationship between the life charge current voltage characteristic as the life charge characteristic and the life deviation which is a deviation between the new charge current voltage characteristics stored in the information storage means. ,
Remaining life diagnosis method. The remaining life diagnosis method according to any one of claims 1 to 6,
The predetermined charging sequence is a charging sequence including charging of a battery with a predetermined high power.
Remaining life diagnosis method. A remaining life diagnosis method for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that travels using power from an electric motor,
(A) In the information storage means for storing the information, the use state of the life battery that has reached the end of its life and the discharge characteristics of the life battery when the life battery is discharged by a predetermined discharge sequence determined in advance. Prepare by associating and storing a certain life discharge characteristic,
(B) obtaining a use state of the diagnostic battery and a diagnostic discharge characteristic that is a discharge characteristic of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence;
(C) The life discharge associated with the use state of the life battery corresponding to the use state of the acquired diagnostic battery among the acquired diagnostic discharge characteristics and the information stored in the information storage means Diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life discharge characteristics,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 8,
The diagnostic battery and the life battery are composed of a plurality of modules,
In the step (a), the information storage is performed by associating a voltage variation of each module of the life battery when the life battery is discharged by the predetermined discharge sequence with the use state of the life battery as the life discharge characteristic. Memorizing the means,
The step (b) is a step of obtaining, as the diagnostic discharge characteristic, a voltage variation of each module of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence.
Remaining life diagnosis method. The remaining life diagnosis method according to claim 8,
In the step (a), the behavior of the life discharge voltage, which is the voltage of the life battery when the life battery is discharged by the predetermined discharge sequence, is associated with the usage state of the life battery as the life discharge characteristic. A new discharge characteristic which is the discharge characteristic of the new battery is stored in the information storage means and the behavior of the new discharge voltage which is the voltage of the new battery when the new battery which is a new battery is discharged by the predetermined discharge sequence. And storing it in the information storage means as
The step (b) is a step of acquiring, as the diagnostic discharge characteristics, behavior of a diagnostic discharge voltage that is a voltage of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence;
The step (c) includes a diagnosis deviation that is a deviation between the behavior of the acquired diagnostic discharge voltage and the behavior of the new discharge voltage stored in the information storage means, and the correspondence stored in the information storage means. It is a step of diagnosing the remaining life of the diagnostic battery from the relationship between the behavior of the life discharge voltage as the life discharge characteristic and the life deviation which is a deviation between the behavior of the new discharge voltage stored in the information storage means. ,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 10,
In the step (c), the difference between the diagnostic discharge voltage and the new discharge voltage at a predetermined timing of the predetermined discharge sequence is set as the diagnostic deviation, and the life discharge voltage and the new discharge voltage at the predetermined timing are used. And diagnosing the remaining life of the diagnostic battery with the difference in life as the life gap,
Remaining life diagnosis method. The remaining life diagnosis method according to claim 10,
The step (c) requires time from the start of the predetermined discharge sequence until the diagnostic discharge voltage reaches the predetermined voltage and from the start of the predetermined discharge sequence until the new discharge voltage reaches the predetermined voltage. The difference from the time is used as the diagnostic deviation, and the time required for the life discharge voltage to reach the predetermined voltage from the start of the predetermined discharge sequence and the new discharge voltage from the start of the predetermined discharge sequence are the predetermined voltage. Is a step of diagnosing the remaining life of the diagnostic battery using the difference from the time required to reach
Remaining life diagnosis method. The remaining life diagnosis method according to claim 8,
The step (a) uses the lifetime battery as a lifetime discharge current voltage characteristic, which is a relationship between the current and voltage of the lifetime battery when the lifetime battery is discharged by the predetermined discharge sequence. A new discharge current voltage characteristic which is a relation between the current and voltage of the new battery when the new battery is discharged by the predetermined discharge sequence and is stored in the information storage means in association with the state. Storing the information storage means as a new discharge characteristic which is a discharge characteristic of the new battery,
In the step (b), a diagnostic discharge current voltage characteristic that is a relationship between a current and a voltage of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence is acquired as the lifetime discharge characteristic. And
The step (c) includes a diagnosis deviation which is a deviation between the acquired diagnostic discharge current voltage characteristic and a new discharge current voltage characteristic stored in the information storage means, and a correspondence stored in the information storage means. It is a step of diagnosing the remaining life of the diagnostic battery from the relationship between the life discharge current voltage characteristic as the life discharge characteristic and the life deviation which is a deviation between the new discharge current voltage characteristics stored in the information storage means. ,
Remaining life diagnosis method. The remaining life diagnosis method according to any one of claims 8 to 13,
The predetermined discharge sequence is a discharge sequence including discharging of the battery with a predetermined high power.
Remaining life diagnosis method. A remaining life diagnostic system for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that uses power from an electric motor,
An information storage for storing the use state of a life battery, which is a battery that has reached the end of life, in association with a life charge characteristic that is a charge characteristic of the life battery when the life battery is charged by a predetermined charging sequence determined in advance. Means,
Information acquisition means for acquiring a use state of the diagnostic battery and a diagnostic charging characteristic that is a charging characteristic of the diagnostic battery when the diagnostic battery is charged by the predetermined charging sequence;
The acquired diagnostic charging characteristics and the lifetime charging characteristics associated with the usage status of the lifetime battery corresponding to the usage status of the acquired diagnostic battery among the information stored in the information storage means. Diagnostic means for diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life charge characteristics,
Remaining life diagnosis system with A remaining life diagnostic system for diagnosing the remaining life of a diagnostic battery that is mounted on or mounted on a vehicle that uses power from an electric motor,
Information storage for storing in association the usage state of a life battery that is a battery that has reached the end of life and the life discharge characteristic that is the discharge characteristic of the life battery when the life battery is discharged according to a predetermined discharge sequence determined in advance. Means,
Information acquisition means for acquiring a use state of the diagnostic battery and a diagnostic discharge characteristic that is a discharge characteristic of the diagnostic battery when the diagnostic battery is discharged by the predetermined discharge sequence;
The acquired diagnostic discharge characteristics and the lifetime discharge characteristics associated with the usage status of the lifetime battery corresponding to the usage status of the acquired diagnostic battery among the information stored in the information storage means. Diagnostic means for diagnosing the remaining life of the diagnostic battery from the relationship with the corresponding life discharge characteristics,
Remaining life diagnosis system with

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