JP2018160971A - Power storage device for vehicle - Google Patents

Abstract

Provided is a vehicle power storage device capable of suppressing deterioration of a storage battery mounted on a vehicle for traveling and suppressing power consumption. A battery pack as a vehicle power storage device includes a first storage battery connected to a generator for running a vehicle, and a battery ECU serving as a control unit that controls the first storage battery. The battery ECU 12 is configured to perform a discharge control of the first storage battery 11 based on the location information of the vehicle when detecting interruption of electrical input / output to / from the first storage battery 11. [Selection diagram] Fig. 1

Description

  The present invention relates to a power storage device mounted on a vehicle.

  Patent Document 1 below discloses a control technology for a power storage device mounted on an electric vehicle. In this control technology, the control unit controls the discharge of the storage battery until the remaining capacity or voltage of the storage battery for traveling becomes a threshold value when the operation is stopped. The threshold at this time is equal to or higher than the start ensuring lower limit threshold for securing the next start, and the continuous deterioration suppression upper limit capable of suppressing the deterioration of the power storage device even if the remaining capacity or voltage is continuously maintained. It is set to be below the threshold.

JP 2010-81672 A

According to the control technique described above, since the storage battery is discharged by limiting the voltage that can ensure the next activation when the operation is stopped as the lower limit, an effect of suppressing the deterioration of the storage battery can be expected.
However, this control technology is effective for long-time parking such as parking for a long time, while it is effective for short-time parking such as shopping and temporary parking for a short time. Is disadvantageous. In other words, after discharging is performed to reduce the remaining capacity of the storage battery when the vehicle is left unattended, if the operation is started immediately and the storage battery is charged, the effect of suppressing deterioration of the storage battery is obtained. In addition to being small, there is a problem that the fuel consumption is worsened because the discharge is wasted and the power consumption is increased.

  The present invention has been made in view of such a problem, and intends to provide a vehicular power storage device capable of suppressing deterioration of a storage battery for traveling mounted on a vehicle and reducing power consumption. It is.

One embodiment of the present invention provides:
A vehicle power storage device (10, 110, 210, 310, 410, 510, 610) mounted on a vehicle,
A storage battery (11) connected to a generator (2) for running the vehicle;
A control unit (12) for controlling the storage battery;
With
The power storage device for a vehicle configured to perform the charge / discharge control of the storage battery based on the leaving time information related to the leaving time of the vehicle when the control unit detects the interruption of electrical input / output to the storage battery (10, 110, 210, 310, 410, 510, 610).

In the above vehicle power storage device, the control unit determines that the main function is stopped and the vehicle is left unattended when it detects the interruption of electrical input / output to the storage battery. At this time, a control part carries out discharge control of a storage battery based on leaving time information. The neglected time information includes not only the neglected time itself but also other information related to the neglected time. In this case, the control unit can suppress the increase in the power consumption while suppressing the deterioration of the storage battery by executing the discharge / charge control under the condition corresponding to the vehicle leaving time information.
For example, when controlling the discharge of a storage battery, it is possible to suppress the deterioration of the storage battery by discharging the storage battery and lowering the voltage for a long time leaving, while the long time leaving for a short time The increase in power consumption can be suppressed by reducing the degree of discharge of the storage battery.

As described above, according to the aspect described above, in the vehicle power storage device, it is possible to suppress deterioration of the storage battery for traveling and to reduce power consumption.
In addition, the code | symbol in the parenthesis described in the means to solve a claim and a subject shows the correspondence with the specific means as described in embodiment mentioned later, and limits the technical scope of this invention. It is not a thing.

1 is a configuration diagram of a power supply system according to Embodiment 1. FIG. 3 is a flowchart of control during leaving in the battery pack according to the first embodiment. 5 is a flowchart of processing by the image processing apparatus according to the first embodiment. 10 is a flowchart of control during leaving in the battery pack according to the second embodiment. FIG. 6 is a diagram illustrating an example of a voltage setting map according to the second embodiment. The figure which shows another example of the voltage setting map of FIG. 10 is a flowchart of processing by the image processing apparatus according to the second embodiment. FIG. 10 is a diagram illustrating an example of a feature map according to the second embodiment. FIG. 5 is a configuration diagram of a power supply system according to a third embodiment. 10 is a flowchart of control during leaving in the battery pack according to the third embodiment. 10 is a flowchart of processing performed by an image processing apparatus according to a third embodiment. FIG. 6 is a configuration diagram of a power supply system according to a fourth embodiment. 10 is a flowchart of control during leaving in the battery pack according to the fourth embodiment. FIG. 6 is a configuration diagram of a power supply system according to a fifth embodiment. 10 is a flowchart of control during leaving in the battery pack according to the fifth embodiment. FIG. 10 is a configuration diagram of a power supply system according to a sixth embodiment. 10 is a flowchart of control during leaving in the battery pack according to the sixth embodiment. FIG. 10 is a configuration diagram of a power supply system according to a seventh embodiment. 10 is a flowchart of control during leaving in the battery pack according to the seventh embodiment. FIG. 10 is a diagram illustrating an example of a voltage setting map according to a seventh embodiment.

  Hereinafter, an embodiment of a power storage device for a vehicle mounted on a vehicle will be described with reference to the drawings.

(Embodiment 1)
A power supply system 1 shown in FIG. 1 is mounted on a vehicle such as an electric vehicle or a hybrid vehicle, for example, and has a function of charging and storing generated power and supplying the charged power to each electric component.

  The power supply system 1 includes a generator 2, a switch 3, a lead storage battery 4, an auxiliary machine 5, a starter 6, a camera 7, an image processing device 8, a host ECU 9 for vehicle control, and a power storage for vehicles. A battery pack 10 as an apparatus.

  The generator 2 is a motor generator that can generate power during regeneration when the vehicle is decelerated, and is configured to output regenerative power generated during regeneration. The generator 2 is electrically connected to the terminal 10 a of the battery pack 10.

The switch 3 is interposed between the lead storage battery 4, the auxiliary machine 5 and the starter 6 and the battery pack 10, and is electrically connected to the terminal 10 b of the battery pack 10. The switch 3 is configured to be set to an off state or an on state in accordance with a control signal from the host ECU 9.
In addition, this switch 3 can also be made into the component of the battery pack 10 as needed.

  The lead acid battery 4 is a secondary battery using lead as an electrode. The lead storage battery 4 can be charged with regenerative power generated by the generator 2 when the switch 3 is turned on.

  The auxiliary machine 5 is an electric device configured to operate by supplying power from the lead storage battery 4.

  The starter 6 is a starter motor and is configured to be operated by electric power supplied from the lead storage battery 4.

  The camera 7 is a photographing unit that is mounted on a vehicle and can photograph the outside of the vehicle. The camera 7 is configured to output image information outside the vehicle (also referred to as “image signal”) to the image processing device 8. Electric power for operating the camera 7 is configured to be supplied from the battery pack 10.

  In order to improve the accuracy of the image information obtained by the camera 7, it is preferable to use a plurality of cameras 7. For example, you can use multiple cameras that are arranged in different directions, use both a camera for obtaining a telephoto image and a camera for obtaining a wide-angle image, or a camera and far-infrared for obtaining a visible image Both cameras can be used to obtain images.

  In addition, in order to keep the cost required for the process of extracting features from the image information captured by the camera 7, the shooting conditions (exposure time, brightness, white balance, focal length, etc.) of the camera 7 are optimized, or different shooting is performed. It is preferable to take an external image under certain conditions.

  The camera 7 is preferably an in-vehicle camera mounted on a vehicle, but may be a fixed point camera installed outdoors such as a parking lot.

  The image processing device 8 is configured to be able to determine location information (also referred to as a “location signal”) regarding the location where the vehicle is left, from image information outside the vehicle captured from the camera 7. Therefore, this image processing device 8 is a location information detection device capable of detecting the location information of the vehicle.

  The image processing device 8 is connected to the battery ECU 12 of the battery pack 10. For this reason, the location information determined by the image processing device 8 is output to the battery ECU 12 in response to a request signal from the battery ECU 12. Further, the power for operating the image processing device 8 is configured to be supplied from the battery pack 10.

  Note that the above location information is information relating to the location where the vehicle is left, but if the length of the vehicle's leaving time can be predicted from the location where the vehicle is left, this location information is used as 1 One can say.

  The image processing apparatus 8 includes a storage unit 8a, an image processing unit 8b, and a determination unit 8c.

  The storage unit 8a preliminarily stores determination data used when determining location information, typically home image information, and features (shape, size, color, etc.) extracted in advance for the image information. It has a function to memorize. In this case, it is preferable to use a supervised learning method for the feature extraction process. In order to improve the accuracy of determining whether or not the user is at home, it is preferable to prepare a plurality of pieces of image information obtained by photographing the home from different directions.

  The image processing unit 8b has a function of extracting features (shape, dimension, color, etc.) from the image information taken from the camera 7. In order to realize this function, it is preferable to use a known deep learning algorithm belonging to machine learning. Machine learning is effective in determining vehicle location information from image information with high accuracy, but in particular, deep learning algorithms can automatically extract features from this image information, even for complex image information. This is advantageous because it is not necessary to specify the features in advance.

  The determination unit 8c has a function of checking whether or not the image information captured from the camera 7 is matched with the feature about the home and determining whether or not the image information belongs to the home.

  The host ECU 9 is configured as a control unit that can control various elements mounted on the vehicle. The host ECU 9 may be configured to also serve as the function of the image processing device 8.

  The battery pack 10 according to the first embodiment has a function of charging regenerative power generated in the generator 2 based on an instruction from the host ECU 9 and supplying stable power to the auxiliary machine 5. Typically, the battery pack 10 is preferably disposed below the vehicle seat, in the center console, in the trunk room, or the like.

  The battery pack 10 includes a lithium storage battery 11, a battery ECU 12, a switch 13, and a voltage sensor 14.

  The lithium storage battery 11 is a storage battery connected to the generator 2 for traveling of a vehicle, and in particular, a secondary battery that performs charging and discharging by moving lithium ions between a positive electrode and a negative electrode. This lithium storage battery 11 is a high input / output type battery that can charge more power in a shorter time than the lead storage battery 4 and can efficiently charge regenerative power generated in a very short time. is there. The lithium storage battery 11 is configured as a power source for the camera 7 and the image processing apparatus 8. Instead of the lithium storage battery 11, another nonaqueous secondary battery can be employed.

  In the following description, for convenience, the lithium storage battery 11 is referred to as a “first storage battery 11”, and the lead storage battery 4 is referred to as a “second storage battery 4”.

  The battery ECU 12 is configured as a control unit that controls the battery pack 10. The battery ECU 12 detects the capacity of the first storage battery 11 and controls the battery pack 10 so as not to be overcharged or overdischarged. The battery ECU 12 is configured to acquire location information from the image processing device 8. The battery ECU 12 includes a storage unit 12a, a calculation unit 12b, a determination unit 12c, and a discharge / charge control unit 12d.

  The switch 13 is configured to be set to an off state or an on state in accordance with a control signal from the battery ECU 12. When the switch 13 is turned on, the regenerative power generated in the generator 2 can be charged into the first storage battery 11.

  The voltage sensor 14 is configured as a voltage detection unit electrically connected to the first storage battery 11 in order to detect a terminal voltage OCV (Open Circuit Voltage) of the first storage battery 11. The voltage sensor 14 is configured using a known voltage sensor, and voltage information (also referred to as “voltage signal”) related to the terminal voltage detected by the voltage sensor 14 is stored in the storage unit 12 a of the battery ECU 12. It has become so.

  On the other hand, the storage unit 12a of the battery ECU 12 stores in advance a correlation between the terminal voltage OCV and a state of charge (SOC). Therefore, the calculation unit 12b of the battery ECU 12 can calculate the state of charge SOC of the first storage battery 11 by applying the terminal voltage OCV detected by the voltage sensor 14 to the above correlation. The state of charge SOC calculated by the calculation unit 12b is stored in the storage unit 12a of the battery ECU 12.

  In addition, when the information regarding the voltage of the 1st storage battery 11 can be detected directly or indirectly by the voltage detection part which consists of sensors, apparatuses, etc. other than the voltage sensor 14, this voltage detection part is used as the voltage sensor 14. Alternatively, the voltage of the first storage battery 11 may be detected by using as an alternative means.

  Here, the operation of the power supply system 1 will be described.

  The second storage battery 4 is controlled in accordance with an instruction from the host ECU 9 at the start, and electric power is supplied from the second storage battery 4 to the starter 6. Thereby, the starter 6 operates. Further, the switch 3 is controlled to be switched from the off state to the on state in accordance with an instruction from the host ECU 9 after the starter 6 is activated. Thereby, electric power is supplied from the second storage battery 4 to the auxiliary machine 5.

  When the vehicle is decelerated or when the terminal voltage OCV of the first storage battery 11 is lower than the standard value, the generator 2 is activated by a control signal from the host ECU 9. At this time, the switch 3 is controlled to be turned on by a control signal from the host ECU 9, and the switch 13 is controlled to be turned on by a control signal from the battery ECU 12. Thereby, the regenerative electric power which generate | occur | produced with the generator 2 is supplied to each of the 1st storage battery 11 and the 2nd storage battery 4, and charging is made.

  Thereafter, when the terminal voltage OCV of the first storage battery 11 reaches the standard value, the host ECU 9 outputs a control signal for stopping the operation to the generator 2. Then, after the vehicle stops, the battery ECU 12 starts control when left.

  Hereinafter, the control at the time of leaving in the battery pack 10 is demonstrated, referring FIG.1 and FIG.2. This control at the time of leaving is executed mainly by the battery ECU 12.

As shown in the flowchart of FIG. 2, this control at the time of leaving is achieved by sequentially executing the steps from Step S1 to Step S8.
In addition, another step may be added to this flowchart as needed, or one step may be divided into a plurality of steps.

  Step S1 is a step of determining whether or not the ignition IG is in an off state. Specifically, when the ignition IG of the vehicle is turned off by a user operation, the host ECU 9 outputs information on the ignition IG, that is, an off signal, to the battery ECU 12. The battery ECU 12 determines that the ignition IG is off by detecting this off signal. When it is determined that the ignition IG is in the OFF state (Yes in step S1), the process proceeds to step S2.

  This step S1 is whether or not the electric input / output with respect to the first storage battery 11 related to the traveling of the vehicle is cut off on the circuit, except for the state where dark current flows, in other words, the main function is It is executed based on the main idea of determining whether or not it is stopped. Then, determining whether or not the ignition IG is in an off state is one form of determining whether or not the main function is stopped.

  Therefore, the determination in step S1 may be executed based on information other than the ignition IG. For example, when a ready-off state in which the system is stopped, a power switch is in an off state, a main relay is in an off state, or the like is detected, the main function may be determined to be stopped, and the process may proceed to step S2. .

  Step S <b> 2 is a step of requesting the location information of the vehicle from the image processing device 8 when it detects the interruption of electrical input / output with respect to the first storage battery 11. According to this step, a request signal for requesting location information from the battery ECU 12 to the image processing device 8 is output.

  Step S3 is a step of acquiring location information regarding the neglected location from the image processing apparatus 8 by executing step S2. According to this step, a determination result as to whether or not the abandoned place is at home is acquired. The processing of the image processing apparatus 8 at this time will be described later.

  Step S4 is a step of determining whether or not the neglected place is at home based on the place information obtained in step S3. If it is determined in this step that the place to be left is at home (in the case of Yes in step S4), the process proceeds to step S5, and if not (in the case of No in step S4), the control at the time of leaving is ended.

  In this step S4, the location information “home” does not directly indicate the leaving time of the vehicle, but is one of the leaving time information that indirectly indicates the leaving time of the vehicle. This step S4 is based on the logic that the location information “home” indicates that the vehicle leaving time is equal to or greater than a reference value. For example, when it is predicted that the leaving time at home is approximately a reference value (for example, 2 hours) or more, the location information itself as home is used to determine whether or not to perform subsequent discharge control. It can be used as a determination parameter.

  In step S5, when the neglected location obtained as location information from the image processing apparatus 8 is a home that is a registered location registered in advance, the target voltage of the first storage battery 11, that is, the terminal voltage OCV suitable for the home is set. It is a step to set. This step is executed by the calculation unit 12b of the battery ECU 12. In this step, the target voltage for the home stored in advance in the storage unit 12 a of the battery ECU 12 is read, and this target voltage is set as the target voltage of the first storage battery 11.

  Step S6 is a step of detecting the voltage of the first storage battery 11. According to this step, the actual voltage (terminal voltage OCV) of the first storage battery 11 is detected by the voltage sensor 14 as a detection voltage.

  Step S7 is a step of comparing the target voltage determined in step S5 with the detected voltage detected in step S6. This step is executed by the determination unit 12c of the battery ECU 12. If it is determined in this step that the detected voltage exceeds the target voltage (Yes in step S7), the process proceeds to step S8. If not (No in step S7), the control at the time of leaving is ended.

  Step S8 is a step of performing discharge control of the first storage battery 11 when the detected voltage exceeds the target voltage. This step is executed by the discharge / charge control unit 12d of the battery ECU 12. Specifically, the discharge process at this time is a process of discharging the power stored in the first storage battery 11 to the second storage battery 4 by a switching operation in which the switch 13 is intermittently turned on and off. According to this step, the voltage of the 1st storage battery 11 can be lowered | hung rather than the detection voltage detected by step S6. This discharging process is continued for a predetermined time, and the process returns to step S6 after the predetermined time has elapsed. In this case, the duration of the discharge process of the first storage battery 11 is a constant value set regardless of the value of the detection voltage of the first storage battery 11.

  And a series of processes from step S6 to step S8 are repeated until the detection voltage of the 1st storage battery 11 becomes below a target voltage, ie, discharge of the 1st storage battery 11 is continued. In this case, the voltage sensor 14 serves as a determination unit that determines the end of the discharge process of the first storage battery 11.

  As a modified example of step S8, the duration of the discharge process of the first storage battery 11 may be a constant value set according to the voltage difference obtained by subtracting the target voltage from the detected voltage, or the target voltage may be set from the detected voltage. Depending on the voltage difference obtained by subtracting, the variable value may be set so that the smaller the value, the shorter the duration of the discharge process. When the duration of the discharge process is a variable value, there is an effect in causing the voltage of the first storage battery 11 to reach the target voltage quickly and accurately.

  Further, in the case of No in step S4, instead of ending the control as it is, it is also possible to execute control for making the degree of discharge of the first storage battery 11 lower than that at home. This control is based on the logic that when the location information is other than home, the user is left for a short time. In this control, a target voltage exceeding the target voltage for the home can be set in advance, and the first storage battery 11 can be discharged according to the set target voltage.

  Here, the processing of the image processing apparatus 8 according to the above steps S2 and S3 will be described with reference to FIGS.

As shown in the flowchart of FIG. 3, this process is achieved by sequentially executing steps S11 to S15.
In addition, another step may be added to this flowchart as needed, or one step may be divided into a plurality of steps.

  Step S11 is a step of detecting a request signal output from the battery ECU 12 for requesting location information. By detecting the request signal in this step, the image processing apparatus 8 is changed from the standby state to the operating state, and thereafter, the process proceeds to step S12.

  Step S <b> 12 is a step of taking image information from the camera 7. That is, the camera 7 captures an external image at the timing when the request signal is detected, and image information obtained by the capture is sent from the camera 7 to the image processing device 8. The image information captured in this step is stored in the storage unit 8a of the image processing device 8. Then, after the image information is taken in at this step, the process proceeds to step S13.

  Step S13 is a step of extracting features from the image information captured in step S12. This step is executed by the image processing unit 8b of the image processing apparatus 8 using a deep learning algorithm. According to this step, features (shape, color, dimension, etc.) are extracted from the image information taken from the camera 7. Further, this feature is stored in the storage unit 8a of the image processing apparatus 8. Then, after extracting the features in this step, the process proceeds to step S14.

  Step S14 is a step of comparing the feature of the image information with the feature of the home. This step is executed by the determination unit 8c of the image processing apparatus 8. According to this step, the feature of the image information captured from the camera 7 is collated with the feature of the home, and it is determined whether or not the image information is that of the home. That is, it is determined whether or not the abandoned location photographed by the camera 7 is at home. After this determination, the process proceeds to step S15.

  Step S15 is a step of sending the determination result in step S14 to the battery ECU 12 as location information in response to a request from the battery ECU 12. Then, the image processing apparatus 8 ends the process and enters a standby state on the condition that the reception information indicating completion of taking in the location information from the battery ECU 12 is detected.

  Next, the effect of Embodiment 1 is demonstrated.

  According to the battery pack 10 described above, the battery ECU 12 can acquire the vehicle location information detected by the image processing device 8 from the image processing device 8. At this time, the battery ECU 12 executes the discharge control of the first storage battery 11 in accordance with a target voltage set in advance for the home when the vehicle is left at the home as a registered location registered in advance. On the other hand, the battery ECU 12 does not execute the discharge control of the first storage battery 11 when the vehicle is left at a place other than the home, that is, when the vehicle is left at a place where the leaving time is predicted to be shorter than at home. That is, the discharge control of the first storage battery 11 is executed only when the vehicle is left at home for a long time, and the discharge control of the first storage battery 11 is performed when the vehicle is left outside the home for a short time. Do not execute.

  Thus, the deterioration of the first storage battery can be suppressed by lowering the voltage by discharging the first storage battery 11 when left for a long time, while the first storage battery 11 is wasted when left for a short time. By avoiding discharge, an increase in power consumption can be suppressed, and fuel consumption (including “electricity consumption”, hereinafter simply referred to as “fuel consumption”) can be improved.

  Further, according to the battery pack 10 described above, the vehicle-mounted camera that can be used for automatic driving of the vehicle is also used as the camera 7, and the vehicle location information can be acquired using the image information from the camera 7.

  Further, according to the battery pack 10 described above, since the first storage battery 11 is used as a power source for the camera 7 and the image processing device 8, other devices operate to supply power to the camera 7 and the image processing device 8. It is not necessary to improve the fuel efficiency.

Further, according to the battery pack 10 described above, the discharge control is performed only when necessary, such as when the detected voltage detected by the voltage sensor 14 exceeds the target voltage, and therefore, the discharge control is simply performed when the vehicle is left. Compared to the fuel consumption can be improved. In particular, since the discharge of the first storage battery 11 is continued until the detection voltage becomes equal to or lower than the target voltage, the durability of the battery pack 10 under a high temperature environment can be improved.
As a result of the improved durability, the battery pack 10 can be installed in a place with a high temperature load such as an engine room or a ceiling portion. For example, when the battery pack 10 is installed in an engine room, there is an advantage that wiring and the like can be shortened and the apparatus cost can be kept low.

  Hereinafter, another embodiment related to the first embodiment will be described with reference to the drawings. In other embodiments, the same elements as those of the first embodiment are denoted by the same reference numerals, and description of the same elements is omitted.

(Embodiment 2)
The battery pack 110 according to the second embodiment constitutes the power supply system 1 shown in FIG. The battery pack 110 has a system configuration similar to that of the battery pack 10 of the first embodiment, but the control at the time of leaving and the processing performed by the image processing apparatus 8 in relation to the control at the time of leaving are the same as those of the first embodiment. It is different.

  As shown in the flowchart of FIG. 4, the control at the time of leaving in the battery pack 110 is achieved by sequentially executing the steps from step S101 to step S108. Among these, Steps S101 to S103 and Steps S106 to S108 are the same as Steps S1 to S3 and Steps S6 to S8 of the first embodiment, and thus description of these steps is omitted.

  In step S104, based on the information obtained in step S103, it is determined whether or not the abandoned location corresponds to a plurality of registered locations registered in advance. If it is determined in this step that the neglected place is one of a plurality of registered places (Yes in Step S104), the process proceeds to Step S105, and if not (No in Step S104), the neglected control is terminated. To do.

  Step S105 is a step of setting a terminal voltage OCV suitable when the target voltage of the first storage battery 11, that is, the neglected place is the corresponding registered place. This step is executed by the calculation unit 12b of the battery ECU 12. In this step, the target voltage for the corresponding registration location is read from the voltage setting map stored in advance in the storage unit 12a of the battery ECU 12, and this target voltage is set as the target voltage of the first storage battery 11. .

Here, an example of the voltage setting map is shown in FIG. In this map, four registered locations of “Home”, “Workplace”, “Store”, and “Ryokan / Hotel” are registered in advance, and a target voltage (V) is set for each.
In this voltage setting map, the registration location and the number of registrations can be changed as necessary.

  In the case of this map, the target voltage (V) is determined so that it can be uniquely derived from the estimated unused time (hr). For the home and workplace, the estimated leaving time (hr) is 10 hours, and Va is adopted as the target voltage (V) corresponding to the 10 hours. For the store, the estimated leaving time (hr) is 1 hour, and Vb is adopted as the target voltage (V) corresponding to this 1 hour. For the inns and hotels, the estimated leaving time (hr) is 13 hours, and Vc is adopted as the target voltage (V) corresponding to the 13 hours.

  For a store that has the shortest estimated leaving time (hr), the target voltage Vb is set to a value higher than the target voltages Va and Vc of other registered locations because the merit of positive discharge is low. It is preferable to set. On the other hand, for a ryokan / hotel that is the registered place with the longest estimated leaving time (hr), the target voltage Vc is set to the target voltages Va and Vb of other registered places because there is a merit of positive discharge. It is preferable to set a lower value.

  Instead of the voltage setting map shown in FIG. 5, the voltage setting map shown in FIG. 6 can be adopted. This map includes information that the discharge process is not performed for the store that is the registered place with the shortest estimated leaving time (hr). For this reason, when it is determined that the abandoned place is a store, the processing from step S105 to step S108 is skipped, and the control at the time of leaving is ended.

  In FIG. 6, whether or not the discharge process is performed is set based on a reference value of predicted leaving time (hr), which is one of the standing time information, or based on a relative rank of the predicted waiting time (hr). Or set it. For example, when the reference value is 2 hours, the discharge process can be performed when the estimated standing time (hr) is 2 hours or more, and the discharge process is not performed when it is less than 2 hours. Further, for example, it is possible to perform the discharge process for the third to third registered locations having the longest estimated leaving time (hr) and not perform the discharge process for other registered locations. In this case, by discharging the first storage battery 11 only when it is necessary that the vehicle is left for a relatively long time, the power consumption of the battery pack 10 can be suppressed and the fuel efficiency can be improved.

  As shown in the flowchart of FIG. 7, the processing of the image processing apparatus 8 according to the battery pack 110 is achieved by sequentially executing steps from step S111 to step S115. Of these steps, Steps S111 to S113 and Step S115 are the same as Steps S11 to S13 and Step S15 (see FIG. 2) of the first embodiment, and thus description of these steps is omitted.

  Step S114 is a step of comparing the features of the image information extracted in step S113 with the features of a plurality of registered locations. This step is executed by the determination unit 8c of the image processing apparatus 8. In this step, by using a feature map stored in advance in the storage unit 8a of the image processing apparatus 8, the features of the image information captured from the camera 7 are collated with the features of the plurality of registered locations. Then, it is determined whether or not the image information is one of a plurality of registration locations.

  Here, an example of the feature map is shown in FIG. In this map, a plurality of features are registered in advance for each of the aforementioned four registration locations. According to this map, when the feature of the image information matches, for example, the feature that the shape of the roof is square and the color of the wall is yellow, the image information corresponds to one of the four registered locations. Therefore, it is determined that the corresponding registration place is “workplace”.

According to the second embodiment, discharge control suitable for each of a plurality of registered locations can be performed.
In addition, the same effects as those of the first embodiment are obtained.

(Embodiment 3)
As shown in FIG. 9, the power supply system 201 according to the third embodiment is different from the camera 7 and the image processing device 8 described above in that it includes a position detection unit 208 that can detect the position of the vehicle. 1 is different from the power supply system 1 according to FIG.
On the other hand, the battery pack 210 of the third embodiment has the same system configuration as the battery pack 10 of the first embodiment.
Other configurations are the same as those of the first embodiment.

  The position detection unit 208 is one of location information detection devices capable of detecting vehicle location information, and is configured as a known in-vehicle navigation device including a GPS unit 208a and a communication unit 208b. This navigation device may be installed as a dedicated device in a specific vehicle, or may be installed as a dual-purpose device between a specific vehicle and another vehicle. .

  The GPS unit 208a performs a function of measuring the current position of the navigation device (or a vehicle equipped with the navigation device) based on radio waves from GPS satellites.

  The communication unit 208b functions to send the position detected by the GPS unit 208a as location information to the battery ECU 12 of the battery pack 210. Thereby, battery ECU12 can acquire location information.

  As shown in the flowchart of FIG. 10, the control at the time of leaving in the battery pack 210 is achieved by sequentially executing the steps from step S201 to step S208. These steps are the same as steps S1 to S8 (see FIG. 2) of the first embodiment, except that the apparatus for requesting and obtaining location information in steps S202 and S203 is the position detection unit 208. Description is omitted.

  Further, as shown in the flowchart of FIG. 11, the processing of the position detection unit 208 at this time is achieved by sequentially executing Step S211 and Step S212. Since step S211 corresponds to step S11 of the first embodiment, and step S212 corresponds to step S12 (see FIG. 2) of the first embodiment, the description thereof is omitted.

According to the third embodiment, the position detected by the position detection unit 208, which is an existing navigation device, can be used as location information, and no image processing is required. Therefore, the system configuration of the power supply system 201 can be simplified. Further, the location information can be acquired with high accuracy by using the GPS unit 208a.
In addition, the same effects as those of the first embodiment are obtained.

  As a modification of the third embodiment, instead of using a navigation device as the position detection unit 208, a GPS receiver is installed, and a navigation function is provided by navigation application software (also referred to as “navigation application”) or a communication contract. Mobile devices (including smartphones) that fulfill the requirements can also be adopted.

  Further, instead of the position detection unit 208, a device that detects position information manually input or voice input by the user may be employed.

  As a modification of the third embodiment, in step S204 in FIG. 10, instead of the process of determining whether the abandoned place is at home, the abandoned place is set in one or more registered places registered in advance. A process for determining whether or not there is a corresponding place can also be adopted. In this case, it is preferable to set the target voltage in step S205 using a target voltage that is preset according to the registration location.

(Embodiment 4)
As shown in FIG. 12, the power supply system 301 according to the fourth embodiment is different from the power supply system 101 according to the second embodiment in that the image processing apparatus 8 is connected to an external server 302 via a network N. doing. For this reason, the battery ECU 12 of the battery pack 310 according to the fourth embodiment can acquire the location information from the image processing apparatus 8 connected to the external server 302 so that the image information can be transmitted and received.
On the other hand, the battery pack 310 of the fourth embodiment has the same system configuration as the battery pack 110 of the second embodiment. For this reason, the control at the time of leaving is the same as that of the second embodiment, but the processing performed by the image processing apparatus 8 is different from that of the second embodiment.
Other configurations are the same as those of the second embodiment.

  The external server 302 is a management server capable of storing image feature data indicating image characteristics in cooperation with other servers in an information service center, and a personal server capable of storing image feature data indicating image characteristics at home. And at least one of them.

  The control at the time of leaving in the battery pack 310 is executed according to the flowchart of FIG. 4 similarly to the battery pack 110 of the second embodiment.

  As shown in the flowchart of FIG. 13, the processing of the image processing apparatus 8 according to the battery pack 310 is achieved by sequentially executing the steps from step S311 to step S321.

  Step S <b> 311 is a step of acquiring feature data from the external server 302. According to this step, the feature data stored in the external server 302 is periodically sent from the external server 302 to the image processing apparatus 8 via the network N.

  Step S <b> 312 is a step for fetching image information for collection from the camera 7. That is, the image information for collection captured from the camera 7 in this step is stored in the storage unit 8 a of the image processing device 8. In this case, the camera 7 may be an in-vehicle camera or a fixed point camera installed outdoors.

  Step S313 is a step of extracting features from the image information for collection captured in step S312. This step is executed by the image processing unit 8b of the image processing apparatus 8 using a deep learning algorithm. According to this step, features (shape, color, dimension, etc.) are extracted from this image information for the collected image information captured from the camera 7. Further, this feature is stored in the storage unit 8a of the image processing apparatus 8.

  Step S314 is a step of comparing the feature of the image information for collection with the feature data acquired from the external server 302 in step S311 and determining a location that matches each other. This step is executed by the determination unit 8c of the image processing apparatus 8. According to this step, the location related to the image information for collection is determined.

  Step S315 is a step of temporarily storing the feature data for the location determined in step S314 in the storage unit 8a of the image processing apparatus 8 in association with the location.

  In step S316, the steps from step S312 to step S315 are repeated until a request signal for location information from the battery ECU 12 is detected. Thereby, a lot of feature data can be collected. On the other hand, when the request signal for the location information from the battery ECU 12 is detected (Yes in step S316), the process proceeds to step S317.

  Each of step S317 and step S318 is a step corresponding to each of step S12 and step S13 of the first embodiment. Thereby, features (shape, color, dimension, etc.) are extracted from the image information taken from the camera 7 in response to a request from the battery ECU 12.

  Step S319 is a step of comparing the feature of the image information extracted in step S318 with the feature data accumulated in step S315. This step is executed by the determination unit 8c of the image processing apparatus 8. According to this step, the feature of the image information captured from the camera 7 is collated with the feature data, and the location relating to the image information is determined.

  Step S320 is a step of sending the determination result in step S319 to the battery ECU 12 as location information in response to a request from the battery ECU 12.

  Step S321 is a step of transmitting the feature data accumulated in step S315 to the external server 302 for data collection. Then, the image processing apparatus 8 ends the process and enters a standby state on the condition that the reception information indicating completion of taking in the location information from the battery ECU 12 is detected.

  Note that the image information for collection captured from the camera 7 in step S312 includes both the stop position of the vehicle (image information when left unattended) and the travel location before the vehicle stops (image information during travel). It is preferably included. Thereby, for example, data in which an image at home and an image around the home are associated can be accumulated. In this case, the cost for the calculation process for determination in step S319 can be suppressed, and the reliability of the determination can be increased.

According to the fourth embodiment, by using the external server 302, it is possible to reduce the load on the data storage and processing in the image processing apparatus 8, and the image processing apparatus 8 can be downsized.
In addition, the same effects as those of the second embodiment are obtained.

(Embodiment 5)
As shown in FIG. 14, the power supply system 401 according to the fifth embodiment is different from the power supply system 101 in that the configuration of the battery pack 410 is different from the battery pack 110 of the second embodiment. It has the same system configuration as the system 101.

  The battery pack 410 has a configuration in which a timer 15 as a parameter detection unit is added to the elements of the battery pack 10. The timer 15 is for measuring the time when the vehicle is actually left as a parameter and reflecting it in the control when left, and is constituted by a known timer capable of measuring the elapsed time.

  As shown in the flowchart of FIG. 15, the leaving control in the battery pack 410 is achieved by sequentially executing the steps from step S401 to step S411. This leaving control is different from the second embodiment in that step S401A and steps S409 to S411 are added. Since Step S401 and Steps S402 to S408 are the same as Step S101 and Steps S102 to S108 (see FIG. 4) of the second embodiment, description of these steps is omitted.

  Step S401A is a step of starting measurement of the leaving time using the timer 15 when it is determined in step S401 that the ignition IG is in the OFF state. In this step, the timer 15 may be configured to automatically start in response to detection of an ignition IG off signal, or when the user who recognizes the ignition IG off state operates the operation member. It may be configured to start.

  Step S409 is a step of detecting the ON state of the ignition IG. This step S409 is executed when it is determined in step S404 that the neglected place is other than the home among the plurality of registered places (in the case of No in step S404).

  Step S410 is a step of ending the measurement of the leaving time by the timer 15 on condition that the ignition IG on-state is detected in step S409. According to this step, the actual leaving time of the vehicle can be counted. In this step, the timer 15 may be configured to automatically stop in response to the detection of the ignition IG on signal, or when the user who recognizes the ignition IG on state operates the operation member. It may be configured to stop.

  Step S411 is a step of updating the voltage setting map stored in advance in the storage unit 12a of the battery ECU 12 based on the standing time counted in step S410. According to this step, for example, in the voltage setting map shown in FIGS. 5 and 6, the estimated leaving time of the registered place other than the home is updated, and the target voltage is updated with this update. In this case, “predicted leaving time” can also be referred to as “leaving time”.

  As an update method at this time, typically, a method of replacing the previous value with the current value, a method of using an average value of the previous value and the current value, a method of using a so-called `` smooth calculation '' may be adopted. it can.

According to the fifth embodiment, since the leaving time when the vehicle is actually left is reflected in the control during leaving, the control corresponding to the driving schedule of the own vehicle, that is, how to use each user can be performed. In addition, the standing time can be updated periodically according to the operation of the ignition IG.
In addition, the same effects as those of the second embodiment are obtained.

(Embodiment 6)
As shown in FIG. 16, the power supply system 501 according to the sixth embodiment is different from the power supply system 401 in that the configuration of the battery pack 510 is different from the battery pack 410 of the fifth embodiment. It has the same system configuration as the system 401.

  The battery pack 510 has a configuration in which the temperature sensor 16 as a parameter detection unit is added to the battery pack 410. This temperature sensor 16 is for measuring the temperature of the battery pack 10 itself as a parameter and reflecting it in the control at the time of leaving, and is configured by a known temperature sensor capable of measuring the temperature.

  As shown in the flowchart of FIG. 17, the control at the time of leaving in the battery pack 510 is achieved by sequentially executing the steps from step S501 to step S511. This neglected control is different from the fifth embodiment only in that step S401A is changed to step S501A and step S510 is changed to step S510.

  In step S501A, when it is determined in step S501 that the ignition IG is in the off state, measurement of the standing time is started using the timer 15, and measurement of the temperature of the battery pack 10 itself is started by the temperature sensor 16. It is a step.

  Step S510 is a step of ending the measurement of the standing time by the timer 15 and ending the measurement of the temperature by the temperature sensor 16 on the condition that the on state of the ignition IG is detected in Step S509. According to this step, the relationship between the standing time and the temperature transition can be detected.

  In step S511, a voltage setting map (for example, a voltage setting map shown in FIGS. 5 and 6) stored in advance in the storage unit 12a of the battery ECU 12 based on the relationship between the standing time counted in step S510 and the temperature transition. ).

According to the sixth embodiment, it is possible to perform control in which the temperature of the battery pack is reflected in the driving schedule of the host vehicle in addition to the time for which the vehicle is actually left.
In addition, the same effects as those of the fifth embodiment are obtained.

(Embodiment 7)
As shown in FIG. 18, the power supply system 601 according to the seventh embodiment is different from the power supply system 401 in that the configuration of the battery pack 610 is different from the battery pack 410 of the fifth embodiment. It has the same system configuration as the system 401.

  The battery pack 610 has a configuration in which the timer 15 is replaced with a clock 17. The clock 17 is used for measuring the leaving start time and the leaving end time when the vehicle is actually left as parameters and reflecting them in the control during leaving, and is configured by a known clock capable of measuring the time. ing.

  As shown in the flowchart of FIG. 19, the control at the time of leaving in the battery pack 610 is achieved by sequentially executing the steps from step S601 to step S611. This neglected control is different from the fifth embodiment only in that step S401A is changed to step S601A and step S610 is changed to step S610.

  Step S601A is a step of acquiring the neglect start time using the clock 17 when it is determined in step S601 that the ignition IG is in the off state.

  Step S610 is a step of acquiring the neglect end time using the clock 17 on the condition that the on state of the ignition IG is detected in Step S609. According to this step, the actual leaving start time of the vehicle and the leaving time (the time from the leaving start time to the leaving end time) can be obtained.

  In step S611, the voltage setting map stored in advance in the storage unit 12a of the battery ECU 12 is updated based on the information obtained in step S610.

  Here, an example of the voltage setting map to be updated is shown in FIG. In this map, the leaving time (hr), the target voltage (V), and the presence / absence of discharge processing corresponding to each registered place are set for each leaving start time zone.

  For example, in step S610, when it is obtained information that the leaving start time when the vehicle is left in the workplace is AM 9:00 and the leaving time (hr) is 9 hours, the voltage setting map of FIG. , 10 hours, which is the current standing time (hr), can be replaced with 9 hours, and Va, which is the target voltage (V), can be changed to a value corresponding to 9 hours.

According to the seventh embodiment, since the leaving start time and the leaving time when the vehicle is actually left is reflected in the control during leaving, the control according to the driving schedule of the own vehicle is possible. In particular, fine control can be performed by adding the leaving start time.
In addition, the same effects as those of the fifth embodiment are obtained.

  In addition, in relation to the above-described Embodiments 5 to 7, as parameters used for updating the target voltage set for the registration location, the vehicle leaving time, the vehicle leaving start time, and the temperature of the first storage battery 11 are used. The embodiment using at least one parameter can be employed.

  The present invention is not limited to the above-described exemplary embodiments, and various applications and modifications can be considered without departing from the object of the present invention. For example, the following embodiments applying the above-described embodiment can be implemented.

  In the above embodiment, the battery ECU 12 has exemplified the case where the location information is acquired from the image processing device 8 or the position detection unit 208. Thus, the battery ECU 12 can be configured to acquire the leaving time information. As a result, the discharge control reflecting the user's intention becomes possible.

  In the above embodiment, the case where the discharge control is performed based on the location information which is one of the leaving time information is exemplified, but the discharging control may be performed based on other leaving time information. As other leaving time information, for example, the following first to third information can be adopted.

  The first information is information related to time or a time zone. Since the time for leaving the vehicle is relatively long at night, the battery pack automatically executes the discharge process of the storage battery when the watch detects that the predetermined time of the night has been reached when the vehicle is left. Can be set.

  The second information is information regarding weather conditions. The battery pack is stored at the timing when the sensors detect that the weather condition is bad when the vehicle is left because the weather time tends to be relatively long when the weather condition is bad such as a rainy day or a low temperature day. It can be set to automatically execute the discharge process.

  The third information is information obtained by statistical prediction. For example, by using Bayesian statistics, a subjective long-term abandonment probability (prior probability) is set, and the probability is corrected by inputting information such as weather, time, and abandonment start time (a posteriori probability). When it becomes, it can be determined that the battery pack is left for a long time, and the battery pack can be set to automatically execute the discharge process of the storage battery.

  Note that the end time of the discharge process when the above first to third information is used as the neglected time information may be set in advance, or may be arbitrarily set by manual input by a user operation member or voice input by a microphone. May be set.

  In the above embodiment, when determining the vehicle location information in the image processing device 8, the case of extracting features from the image information using an algorithm of deep learning (deep learning) belonging to machine learning is illustrated. Alternatively, it is also possible to determine the vehicle location information using a machine learning algorithm that predesignates features.

  In the above embodiment, the battery ECU 12 exemplifies the case where the discharge control of the first storage battery 11 is performed based on the leaving time information when the electrical input / output interruption to the first storage battery 11 is detected. When the stable voltage of the first storage battery 11 is higher than that at the start of leaving, the charging control of the first storage battery 11 may be performed. That is, the battery ECU 12 can be configured to perform discharge / charge control (control of either discharge control or charge control) of the first storage battery 11 based on the leaving time information.

  In the above embodiment, the case where the discharge destination of the first storage battery 11 is the second storage battery 4 is exemplified, but if necessary, other devices other than the second storage battery 4, such as the auxiliary machine 5, the camera 7, and the image The processing device 8 or the like can be the discharge destination of the first storage battery 11.

7 Camera 8 Image processing device (location information detection device)
10, 110, 210, 310, 410, 510, 610 Battery pack (vehicle power storage device)
11 First storage battery (storage battery)
12 Battery ECU (control unit)
14 Voltage sensor (voltage detector)
15 Timer (parameter detector)
16 Temperature sensor (parameter detector)
17 Clock (parameter detector)
208 Position detection unit (location information detection device)
302 External server

Claims (14)

A power storage device for a vehicle mounted on a vehicle,
A storage battery connected to a generator for running the vehicle;
A control unit for controlling the storage battery;
With
The control unit is configured to control charging / discharging of the storage battery based on the leaving time information related to the leaving time of the vehicle when detecting the interruption of electrical input / output to the storage battery. apparatus.   The power storage device for a vehicle according to claim 1, wherein the control unit performs charge / discharge control of the storage battery when the leaving time information indicates that the leaving time of the vehicle is equal to or greater than a reference value.   The said control part is connected to the location information detection apparatus which can detect the location information of the said vehicle as the said leaving time information, The said location information is acquired from the said location information detection device, The Claim 1 or 2 of Claim 1 or 2 Power storage device for vehicles. The location information detection device is an image processing device capable of determining the location information from image information outside the vehicle photographed by one or more cameras.
The vehicle power storage device according to claim 3, wherein the control unit acquires the location information from the image processing device.   The power storage device for a vehicle according to claim 4, wherein the control unit acquires the location information determined by the image processing device using machine learning from the image information.   The power storage device for a vehicle according to claim 5, wherein the control unit acquires the location information determined by the image processing device using the deep learning technique as the machine learning from the image information.   The power storage device for a vehicle according to any one of claims 4 to 6, wherein the control unit acquires the location information from the image processing device connected to an external server so that the image information can be transmitted and received.   The power storage device for a vehicle according to claim 7, wherein the image information includes both a stop location of the vehicle and a travel location before the vehicle stops. The location information detection device is a position detection unit capable of detecting the position of the vehicle,
The vehicle power storage device according to claim 3, wherein the control unit acquires the position of the vehicle detected by the position detection unit as the location information. A voltage detection unit for detecting the voltage of the power storage unit;
For the discharge control of the storage battery, the control unit uses a target voltage set for the registered location and is detected by the voltage detection unit when the location information indicates a registered location registered in advance. The vehicle power storage device according to any one of claims 3 to 9, wherein the discharge control is performed when the detected voltage exceeds the target voltage.   The vehicle power storage device according to claim 10, wherein the control unit continues discharging the storage battery until the detected voltage becomes equal to or lower than the target voltage. A parameter detection unit for detecting at least one parameter of the leaving time of the vehicle, the leaving start time of the vehicle, and the temperature of the storage battery;
The power storage device for a vehicle according to claim 10 or 11, wherein the control unit updates the target voltage set for the registration location based on the parameter detected by the parameter detection unit.   The power storage device for a vehicle according to any one of claims 3 to 12, wherein the storage battery is configured as a power source of the location information detection device.   The power storage device for vehicles according to claim 1 or 2 with which said control part acquires said idle time information by user's manual input or voice input.

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