JP2005080330A - Controller of electric storage mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize the changing of a target SOC (State Of Charge) in response to a driving state of a vehicle with a simple constitution. <P>SOLUTION: A controller of an electric storage mechanism includes a hybrid ECU which performs a program including a step of calculating charging and discharging power values of a battery 400 according to charging and discharging voltage values sensed by a voltmeter and charging and discharging current value sensed by an ammeter (S100), a step of judging whether the charged power to the battery or the discharged power from the battery is limited or not (S200), a step of subtracting a point when the charging power to the battery or the discharging power from the battery is limited (S400), a step of judging whether the point becomes negative or not (S500), and a step of changing the target SOC when the point becomes negative (S600). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a control device for a power storage mechanism, and more particularly to a control device for a power storage mechanism that changes a target capacity value of the power storage mechanism.

  Conventionally, a hybrid vehicle, a fuel cell vehicle, and an electric vehicle that travel with a driving force from a motor are known. Such vehicles are equipped with a power storage mechanism such as a battery or a capacitor for storing electric power to be supplied to the motor. This power storage mechanism needs to store a certain amount of power so that power can be supplied immediately as needed. On the other hand, at the time of regenerative braking, it is necessary to be able to charge the electric power generated by the motor. Therefore, generally, charging to the power storage mechanism and discharging from the power storage mechanism are controlled so that the remaining capacity of the power storage mechanism becomes a capacity target value (for example, 60 [%] at full charge). By the way, the vehicle is used under various driving conditions such as frequent discharge or reverse charging due to the road environment and the driver's habit. Therefore, if the capacity target value is fixed, the power storage mechanism cannot be used efficiently according to various operating conditions. Therefore, a technique for changing the capacity target value according to the driving state of the vehicle has been proposed.

  Japanese Patent Laid-Open No. 10-150701 (Patent Document 1) discloses a power output apparatus that sets a target state of a power storage mechanism based on a predicted traveling condition. The power output device described in Patent Document 1 is a power output device that is mounted on a vehicle and outputs power to a drive shaft. This power output device includes an electric motor capable of outputting power to a drive shaft, a prime mover, a generator capable of converting at least part of the power output from the prime mover into electrical energy, and electrical energy converted by the generator. A power storage mechanism capable of charging and supplying electric energy necessary for driving the electric motor, a state detection unit for detecting the state of the power storage mechanism, a travel condition prediction unit for predicting the travel condition of the vehicle, and the predicted travel A target state setting unit that sets a target state of the power storage mechanism based on conditions, and controls the motor and the generator so that the state of the power storage mechanism detected by the state detection unit becomes the target state set by the target state setting unit A charge / discharge control unit.

According to the invention disclosed in this publication, it is possible to set the target state of the power storage mechanism based on the predicted traveling condition and control the state of the power storage mechanism to be in this target state. As a result, when driving conditions in which electric energy regenerated by the motor is large are predicted, the target state of the power storage mechanism is set to a low value so that sufficient charging is possible, and the power consumed by the motor is large. When the traveling condition is predicted, the energy efficiency of the entire apparatus can be improved by controlling the target state of the power storage mechanism to a high value so that sufficient electric power can be discharged. In addition, when predicting a traveling condition in which the electric energy regenerated by the electric motor is small or predicting a traveling condition in which the electric power consumed by the electric motor is small, the target state of the power storage mechanism is set to a state in which the charge / discharge efficiency is high. Thus, the energy efficiency of the entire apparatus can be further increased.
JP-A-10-150701

  However, in the power output apparatus described in the above publication, a separate sensor and program are required to predict the traveling condition of the vehicle, and accordingly, the number of parts increases and the processing performed by the computer increases, resulting in complicated There was a problem of becoming a configuration. In addition, when the target state is set corresponding to the predicted driving condition, the driving condition is accurately predicted in order to enable sufficient charging and discharging in the set target state. It is necessary to set a target state that reliably corresponds to the driving condition. For this reason, it is necessary to accurately obtain the running conditions and the charge / discharge power required by the vehicle under the running conditions. Therefore, the development cost is required accordingly. Furthermore, even in the target state set in such a manner, charging to the power storage mechanism and discharging from the power storage mechanism are not always satisfactory in the actual operation state.

  The present invention has been made to solve the above-described problems, and its purpose is to change the capacity target value with a simple configuration and satisfy the charge / discharge requirements in the actual operation state. Another object of the present invention is to provide a control device for a power storage mechanism.

  A power storage mechanism control device according to a first aspect of the present invention controls a power storage mechanism mounted on a vehicle. This control device is based on control means for controlling charging to the power storage mechanism and discharging from the power storage mechanism so that the remaining capacity of the power storage mechanism matches the capacity target value, and a predetermined condition. Limiting means for limiting at least one of charging to the power storage mechanism and discharging from the power storage mechanism, and changing means for changing the target capacity value based on information on the limitation by the limiting means.

  According to the first aspect of the invention, for example, when the frequency at which charging to the power storage mechanism is restricted by the restricting means while the vehicle is traveling exceeds the threshold value, the capacity target value is set by the changing means. Changed to be lower. The control means controls charging to the power storage mechanism and discharging from the power storage mechanism so that the changed capacity target value matches the remaining capacity of the power storage mechanism. As a result, the remaining capacity of the power storage mechanism changes in the vicinity of the target capacity value that has been changed to a low value. For this reason, the amount of electric power that can be charged to the power storage mechanism is increased before the remaining capacity becomes impossible to charge the power storage mechanism, and charging to the power storage mechanism is hardly restricted. Therefore, in an operating state where charging is frequently performed and charging of the power storage mechanism is actually required, more regenerative energy can be stored as electric power so as to satisfy the request. Conversely, when the frequency at which discharge from the power storage mechanism is limited by the limiting means exceeds a threshold value, the capacity target value is changed to be higher by the changing means. The control means controls charging to the power storage mechanism and discharging from the power storage mechanism so that the changed capacity target value matches the remaining capacity of the power storage mechanism. Thereby, the remaining capacity of the power storage mechanism changes in the vicinity of the capacity target value that has been changed to a high level. As a result, the amount of power that can be discharged by the power storage mechanism increases until the remaining capacity becomes incapable of discharging from the power storage mechanism, making it difficult to limit the discharge from the power storage mechanism. Therefore, in an operating state where the discharge is frequently performed and the discharge from the power storage mechanism is actually required, the vehicle can be driven by driving the motor with a longer or larger output so as to satisfy the request. As a result, it is possible to change the target capacity value of the power storage mechanism based on the frequency by counting the limit number of times without requiring a complicated configuration or program as in the prior art. In addition, it is difficult to restrict the discharge from the power storage mechanism, and it is possible to provide a control device for the power storage mechanism that can satisfy the charge / discharge requirements in the actual operation state.

  In the power storage mechanism control device according to the second invention, in addition to the configuration of the first invention, the changing means is based on the number of times at least one of charging to the power storage mechanism and discharging from the power storage mechanism is limited. And means for changing the capacity target value.

  According to the second invention, the capacity target value can be changed based on the number of times that at least one of charging to the power storage mechanism and discharging from the power storage mechanism is limited.

  In the control device for the power storage mechanism according to the third invention, in addition to the configuration of the second invention, the changing means includes at least one of charging to the power storage mechanism and discharging from the power storage mechanism within a predetermined time. Means for changing the capacity target value based on the number of times of limiting one is included.

  According to the third invention, the capacity target value can be changed based on the number of times that at least one of charging to the power storage mechanism and discharging from the power storage mechanism is limited within a predetermined time. For this reason, the capacity target value can be changed by reflecting the driving state of the vehicle within a predetermined time. Therefore, by temporarily limiting at least one of charging and discharging, the target capacity value can be prevented from being changed unnecessarily, and the target capacity value can be changed appropriately.

  In the control apparatus for the power storage mechanism according to the fourth invention, in addition to the configuration of the first invention, the changing means changes the capacity target value to be lower when charging to the power storage mechanism is restricted. And means for changing the capacity target value to be higher when discharge from the power storage mechanism is restricted.

  According to the fourth invention, when the charging to the power storage mechanism is restricted, the capacity target value can be changed to be low, and when the discharge from the power storage mechanism is restricted, the capacity target value is increased. Can be changed to.

  In the control device for the power storage mechanism according to the fifth invention, in addition to the configuration of the third invention, the control device for the power storage mechanism can charge and discharge the power storage mechanism within a predetermined time. The information is based on the number of times at least one of which is limited, and further includes means for storing information on a tendency regarding at least one of charging to the power storage mechanism and discharging from the power storage mechanism, and the changing means includes: Means for changing the capacity target value based on the information regarding the trend is included.

  According to the fifth invention, the information is based on the number of times that at least one of charging to the power storage mechanism and discharging from the power storage mechanism is restricted within a predetermined time, and at least one of charging and discharging of the power storage mechanism Information regarding the trend for either of these can be stored, and the capacity target value can be changed based on the information regarding this trend. As a result, for example, if information on not being restricted is stored in addition to the restricted number of times as information relating to the trend, more specifically, at least one of charging to the storage mechanism and discharging from the storage mechanism Information on the trend can be stored, and the capacity target value can be changed more appropriately based on the information on the trend.

  In the power storage mechanism control device according to the sixth invention, in addition to the configurations of the first to fifth inventions, the predetermined condition is a condition relating to the remaining capacity of the power storage mechanism.

  According to the sixth invention, it is possible to limit at least one of charging to the power storage mechanism and discharging from the power storage mechanism based on the condition regarding the remaining capacity of the power storage mechanism.

  In the power storage mechanism control device according to the seventh aspect of the invention, in addition to the configurations of the first to fifth aspects, the predetermined condition is a condition relating to the remaining capacity and temperature of the power storage mechanism.

  According to the seventh aspect, it is possible to limit at least one of charging to the power storage mechanism and discharging from the power storage mechanism based on conditions regarding the remaining capacity and temperature of the power storage mechanism.

  Hereinafter, a battery control device according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  Referring to FIG. 1, a hybrid vehicle equipped with a control device according to the present embodiment includes an engine 100, a generator 200, a PCU (Power Control Unit) 300, a battery 400, a motor 500, and all of these. And a hybrid ECU (Electronic Control Unit) 600 connected to the. The control device according to the embodiment of the present invention is realized by hybrid ECU 600.

  The power generated by the engine 100 is divided into two paths by the power distribution mechanism 700. One is a path for driving the wheel 900 via the speed reducer 800. The other is a path for generating power by driving the generator 200.

  The power generator 200 generates power using the power of the engine 100 distributed by the power distribution mechanism 700. The power generated by the power generator 200 is in a vehicle operating state or a state of charge (SOC) state of the battery 400. It is used properly according to the usage. For example, during normal running or sudden acceleration, the electric power generated by the generator 200 becomes the electric power that drives the motor 500 as it is. On the other hand, when the SOC of the battery 400 is lower than a predetermined value, the power generated by the generator 200 is converted from AC to DC by the inverter 302 of the PCU 300, and after the voltage is adjusted by the converter 304, the battery 400 is stored. The battery 400 is an assembled battery configured by connecting a plurality of battery modules in which a plurality of battery cells are integrated in series.

  The motor 500 is driven by at least one of the electric power stored in the battery 400 and the electric power generated by the generator 200. The driving force of the motor 500 is transmitted to the wheels 900 via the speed reducer 800. As a result, the motor 500 assists the engine 100 or causes the vehicle to travel with the driving force from the motor 500.

  On the other hand, when the hybrid vehicle is in regenerative braking, the motor 500 is driven by the wheels 900 via the speed reducer 800, and the motor 500 is operated as a generator. As a result, the motor 500 acts as a regenerative brake that converts braking energy into electric power. The electric power generated by the motor 500 is stored in the battery 400 via the inverter 302.

  Hybrid ECU 600 includes a CPU (Central Processing Unit) 602, a memory 604, and a counter 606. The CPU 602 performs arithmetic processing based on the driving state of the vehicle, the accelerator opening, the amount of depression of the brake pedal, the shift position, the SOC of the battery 400, the map and program stored in the memory 604, and the like. Thereby, hybrid ECU 600 controls the devices mounted on the vehicle so that the vehicle is in a desired driving state.

  As shown in FIG. 2, hybrid ECU 600 includes a voltmeter 610 that detects a charge / discharge voltage value of battery 400, an ammeter 612 that detects a charge / discharge current value, and a battery temperature sensor 614 that detects battery temperature T. Is connected. The hybrid ECU 600 calculates the charge / discharge power value of the battery 400 from the charge / discharge voltage value detected by the voltmeter 610 and the charge / discharge current value detected by the ammeter 612, and integrates the charge / discharge current value. The SOC is calculated.

  Here, hybrid ECU 600 controls the devices in accordance with the engine output request map shown in FIG. 3 so that the SOC of battery 400 matches the target SOC (X [%] in the figure). Specifically, when the SOC of the battery 400 is Y [%], the engine 100 is driven with an output obtained by subtracting the required discharge value A [kW] from the output required for traveling of the vehicle, and the A [kW] Electric power is discharged from the battery 400 and the motor 500 is driven. On the other hand, when the SOC of the battery 400 is Z [%], the engine 100 is driven with an output obtained by adding the charge request value B [kW] to an output necessary for traveling of the vehicle, and electric power of B [kW] is generated. The machine 200 generates power and charges the battery 400.

  The engine output request map is a map used to determine the output borne by the battery 400 out of the output necessary for traveling of the vehicle and the output borne by the engine 100 in addition to the output necessary for traveling of the vehicle. is there. Therefore, the charging power value to battery 400 and the discharging power value from battery 400 are not determined only by this engine output request map. That is, the battery 400 may be charged while the S0C of the battery 400 is Y [%], and the battery 400 may be discharged while the S0C of the battery 400 is Z [%]. .

  Hybrid ECU 600 also includes a charge power limit value (hereinafter, “charge power limit value” is expressed as W (IN)), which is a limit value of power that battery 400 charges or discharges, and a discharge power limit value (hereinafter, referred to as “charge power limit value”). “Discharge power limit value” is expressed as W (OUT)), and the charge power value to battery 400 and the discharge power value from battery 400 do not exceed W (IN) and W (OUT). Restrict to.

  In order to set W (IN), the hybrid ECU 600 sets a first charge power limit value (hereinafter, “first charge power limit value” is represented as SW (IN)), a first discharge power limit value (hereinafter, “ “First discharge power limit value” is represented as SW (OUT)), second charge power limit value (hereinafter “second charge power limit value” is represented as AW (IN)), and second discharge power limit value (hereinafter referred to as “second discharge power limit value”). , “Second discharge power limit value” is expressed as AW (OUT)), and third charge power limit value (hereinafter, “third charge power limit value” is expressed as ηW (IN)). Hybrid ECU 600 sets the largest one of SW (IN), AW (IN), and ηW (IN) as W (IN). Also, the minimum of SW (OUT) and AW (OUT) is set as W (OUT).

  In the present embodiment, W (IN), SW (IN), AW (IN), and ηW (IN) are negative values. W (OUT), SW (OUT), and AW (OUT) are positive values.

  SW (IN) and SW (OUT) are set based on the battery temperature T according to the map shown in FIG. In this map, when the battery temperature T is T (1) [° C.] or T (2) [° C.], SW (IN) and SW (OUT) are charged and discharged so as to stop charging and discharging of the battery 400. It is a value that limits power. In this embodiment, SW (IN) is a negative value and SW (OUT) is a positive value.

  AW (IN) and AW (OUT) are set based on the SOC of battery 400 in accordance with the map shown in FIG. In this map, when the SOC of the battery 400 is W (2) [%], AW (IN) is a value that limits the charging power so as to stop the charging of the battery 400. Further, when the SOC of battery 400 is W (3) [%], AW (OUT) is a value that limits the discharge power so as to stop the discharge of battery 400. In the present embodiment, AW (IN) is a negative value and AW (OUT) is a positive value.

  ηW (IN) is set based on battery temperature T and SOC of battery 400 according to the map shown in FIG. In this map, ηW (IN) is a value that limits the charge / discharge power so as to stop the charge / discharge of the battery 400 when the SOC of the battery 400 is W (1) [%]. Further, when the battery temperature T is T (3) [° C.] (indicated by a solid line in the figure), and when the battery temperature T is T (4) [° C.] (T (3) <T (4)) (breakage in the figure). (Indicated by a line), when T (4) [° C.], ηW (IN) increases from a low SOC value of the battery 400, and charging is limited. In the present embodiment, ηW (IN) is a negative value.

  The maps shown in FIGS. 3 and 4 are examples, and the present invention is not limited to these maps. The parameters used to set W (IN) and W (OUT) may use the voltage of the battery 400 or the like in addition to the battery temperature T and the SOC of the battery 400, or may be a combination thereof. . In addition, as a method for limiting the charging power and discharging power of battery 400, other well-known general techniques may be used, and detailed description thereof will not be repeated here.

  When the charging power to the battery 400 and the discharging power from the battery 400 are not limited within a predetermined time, the counter 606 of the hybrid ECU 600, as shown in FIG. ) And W (OUT), one point is added. (FIG. 5 (A) shows a state where three points are accumulated.) An upper limit is set for this point. That is, up to 6 points can be accumulated for W (IN), and up to 8 points can be accumulated for W (OUT).

  On the other hand, when the charge power and the discharge power are limited, as shown in FIG. 5B, the point stored in the counter 606 is subtracted (FIG. 5B) within a predetermined time. This shows a case where charging to the battery 400 is restricted twice). Thus, by adding / subtracting points, the hybrid ECU 600 stores information related to trends in charging the battery 400 and discharging from the battery 400.

  The predetermined time may be a time that allows the tendency of charging and discharging from the battery 400 to be grasped, and may be set as appropriate, such as a few days or a week. . Moreover, you may make it add / subtract a point by a travel distance etc. instead of time. Further, points may be added or subtracted one by one, or a plurality of points may be added or subtracted. Further, when the discharge from the battery 400 is restricted, more points are subtracted than when the charge to the battery 400 is restricted, and weighting is given by the discharge from the battery 400 and the charge to the battery 400. May be different.

  As shown in FIG. 5C, when the stored point becomes negative (in FIG. 5C, the battery 400 is charged within a predetermined time from the state of FIG. 5A). Hybrid ECU 600 shifts the above-mentioned engine output request map so as to change the target SOC. At this time, when the point related to charging of battery 400 becomes negative, hybrid ECU 600 changes the target SOC to be lower. On the contrary, when the point regarding the discharge from the battery 400 becomes negative, the hybrid ECU 600 changes the target SOC to be higher.

  With reference to FIG. 6, a control structure of a program executed by hybrid ECU 600 which is the control apparatus according to the present embodiment will be described.

  In step (hereinafter, step is abbreviated as S) 100, hybrid ECU 600 calculates the charge / discharge power value of battery 400 from the charge / discharge voltage value detected by voltmeter 610 and the charge / discharge current value detected by ammeter 612. To do.

  In S200, hybrid ECU 600 determines whether or not the charge / discharge power of battery 400 is limited. If charge / discharge power of battery 400 is limited (YES in S200), the process proceeds to S300. If not (NO in S200), the process proceeds to S800.

  In S300, hybrid ECU 600 sets a restriction flag. In S400, hybrid ECU 600 subtracts points. In S500, hybrid ECU 600 determines whether or not the point stored in counter 606 has become negative. If the point has become negative (YES in S500), the process proceeds to S600. If not (NO in S500), the process proceeds to S800.

  In S600, hybrid ECU 600 changes the target SOC. At this time, when the point related to charging of battery 400 becomes negative, hybrid ECU 600 changes the target SOC to be lower. On the other hand, when the point regarding the discharge from battery 400 becomes negative, hybrid ECU 600 changes the target SOC to be higher.

  In S700, hybrid ECU 600 resets the limit flag and resets the points stored in counter 606.

  In S800, hybrid ECU 600 determines whether or not a predetermined time has elapsed since the processing of the target SOC change routine was started. If the predetermined time has elapsed (YES in S800), the process proceeds to S900. If not (NO in S800), the process returns to S100. The predetermined time may be a time that allows the tendency of charging and discharging from the battery 400 to be grasped, and can be set as appropriate, such as a few days or a week. . Moreover, you may make it add / subtract a point by a travel distance etc. instead of time.

  In S900, hybrid ECU 600 determines whether or not a restriction flag is set. If the restriction flag is set (YES in S900), the process proceeds to S1000. If not (NO in S900), the process proceeds to S1100.

  In S1000, hybrid ECU 600 resets the restriction flag. In S1100, hybrid ECU 600 adds points. In S1200, hybrid ECU 600 maintains the target SOC.

  About operation | movement of hybrid ECU600 which is a control apparatus which concerns on this Embodiment based on the above structures and flowcharts, when charging / discharging electric power is restrict | limited within the predetermined time, and when it is not restrict | limited Separately described.

[When charge / discharge power is limited]
When the target SOC change routine is started, the charge / discharge power value of the battery 400 is calculated from the charge / discharge voltage value detected by the voltmeter 610 and the charge / discharge current value detected by the ammeter 612 (S100). It is determined whether the charge / discharge power is limited (S200).

  Here, since the charge / discharge power of battery 400 is limited (YES in S200), the limit flag is set (S300), and the point stored in counter 606 is subtracted (S400).

  When the points are subtracted (S400), it is determined whether or not the points stored in the counter 606 have become negative (S500). At this time, if the point related to charging battery 400 is negative (YES in S500), the target SOC is changed from X (A) [%] to X (B) [%] as shown by the broken line in FIG. ], The engine output request map is shifted so as to be lower (S600). At this time, the lower limit value X (C) [%] is set for the target SOC, and the target SOC is never changed to a value lower than the lower limit value X (C) [%].

  On the other hand, when the point related to the discharge from battery 400 becomes negative (YES in S500), the target SOC is changed from X (A) [%] to X (D) [%] as shown by the one-dot chain line in FIG. The engine output request map is shifted so that the engine output request map becomes higher (S600). At this time, the upper limit value X (E) [%] is set for the target SOC, and the target SOC is not changed to a value higher than the upper limit value X (E) [%]. When the target SOC is changed (S600), the limit flag and the point stored in the counter 606 are reset (S700).

  On the other hand, even if the points are subtracted (S400), if the points stored in counter 606 are not negative (NO in S500), a predetermined time has elapsed since the target SOC change routine was started. Is determined (S800).

  If the predetermined time has not elapsed (NO in S800), the processes after S100 are repeated. If the predetermined time has elapsed (YES in S800), the limit flag is set (YES in S900), the limit flag is reset (S1000), and the target SOC is maintained (S1200). .

[When charge / discharge power is not limited]
When the target SOC change routine is started, the charge / discharge power value of the battery 400 is calculated from the charge / discharge voltage value detected by the voltmeter 610 and the charge / discharge current value detected by the ammeter 612 (S100). It is determined whether the charge / discharge power is limited (S200).

  Here, since the charge / discharge power of battery 400 is not limited (NO in S200), it is determined whether or not a predetermined time has elapsed since the target SOC change routine was started (S800). .

  If the predetermined time has not elapsed (NO in S800), the processes after S100 are repeated. If the predetermined time has elapsed (YES in S800), the limit flag is not set (NO in S900), so points are added (S1100), and the target SOC is maintained (S1200).

  As described above, the hybrid ECU that is the control device according to the present embodiment changes the target SOC to be lower when charging to the battery is restricted and the point related to charging becomes negative. Thereby, the SOC of the battery changes in the vicinity of the lowered target SOC. For this reason, the power that can be charged to the battery increases before the SOC becomes impossible to charge the battery. Therefore, charging of the battery is less likely to be restricted, and more regenerative energy can be stored as electric power in an operating state where charging is frequently performed. At this time, if the charging to the battery is restricted, the target SOC is changed so as to be lowered. Therefore, the target SOC can be changed so as to satisfy the request in the operation state where the charging to the battery is actually required. .

  Conversely, when the discharge from the battery is restricted and the point related to the discharge becomes negative, the target SOC is changed to be higher. As a result, the SOC of the battery changes in the vicinity of the increased target SOC. For this reason, the power that can be discharged by the battery increases before the SOC reaches the level at which the battery cannot be discharged from the SOC. Therefore, it becomes difficult to limit the discharge from the battery, and the vehicle can be driven by driving the motor with a longer or larger output in an operation state where the discharge is frequently performed. At this time, if the discharge from the battery is restricted, the target SOC is changed to be higher. Therefore, the target SOC can be changed so as to satisfy the request in the operation state where the discharge from the battery is actually required. .

  Note that the method of counting the number of times that charging and discharging from the battery is limited is not limited to the above-described method, and may be set as appropriate according to the characteristics of the vehicle, the driver, and the like. For example, when the number of times is limited within the same period (section), it may be counted as one time. Moreover, when it restrict | limits continuously in multiple periods (section), you may make it change target SOC irrespective of the state of a point.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 is an overall control block diagram of a hybrid vehicle equipped with a hybrid ECU that is a control device according to an embodiment of the present invention. It is a control block diagram of a part of a hybrid vehicle equipped with a hybrid ECU that is a control device according to an embodiment of the present invention. 3 is an engine output request map stored in a memory of a hybrid ECU. It is the map memorize | stored in the memory of hybrid ECU in order to set W (IN) and W (OUT). It is the figure which showed the method in which the counter of hybrid ECU adds / subtracts a point. It is a flowchart which shows the control structure of the program which hybrid ECU performs. It is the figure which showed the operation | movement which hybrid ECU performs in order to change target SOC.

Explanation of symbols

  400 battery, 600 hybrid ECU, 602 CPU, 604 memory, 606 counter, 610 voltmeter, 612 ammeter, 614 battery temperature sensor.

Claims (7)

A power storage mechanism control device mounted on a vehicle,
Control means for controlling charging to the power storage mechanism and discharging from the power storage mechanism so that a remaining capacity of the power storage mechanism matches a capacity target value;
Limiting means for limiting at least one of charging to the power storage mechanism and discharging from the power storage mechanism based on a predetermined condition;
A control device for a power storage mechanism, comprising: changing means for changing the target capacity value based on information on the restriction by the restricting means.   The said change means contains the means for changing the said capacity | capacitance target value based on the frequency | count which limited at least any one of the charge to the said electrical storage mechanism, and the discharge from the said electrical storage mechanism. Control device for power storage mechanism.   The changing means includes means for changing the capacity target value based on the number of times that at least one of charging to the power storage mechanism and discharging from the power storage mechanism is limited within a predetermined time. The control device for a power storage mechanism according to claim 2. The changing means is
Means for changing to lower the target capacity value when charging to the power storage mechanism is restricted;
The power storage mechanism control device according to claim 1, further comprising: a unit configured to change the capacity target value to be higher when discharge from the power storage mechanism is restricted. The control device of the power storage mechanism is information based on the number of times of limiting at least one of charging to the power storage mechanism and discharging from the power storage mechanism within a predetermined time, and charging the power storage mechanism And means for storing information relating to a trend for at least one of the discharges from the power storage mechanism,
The power storage mechanism control device according to claim 3, wherein the changing unit includes a unit for changing the target capacity value based on information on the tendency.   The power storage mechanism control device according to claim 1, wherein the predetermined condition is a condition related to a remaining capacity of the power storage mechanism.   The power storage mechanism control device according to claim 1, wherein the predetermined condition is a condition relating to a remaining capacity and a temperature of the power storage mechanism.

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