JP2014054082A - Battery pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack capable of efficiently providing and supplying power.SOLUTION: A battery pack 10 for charging/discharging an on-vehicle battery 23 comprises: a control device 11 for detecting residual capacity of a battery 13; and an information transmission device 12 capable of communicating with the electric vehicle V side. The information transmission device 12 notifies the electric vehicle V side that power supply is possible, when the residual capacity detected by the control device 11 is equal to or more than a first predetermined value; and notifies the electric vehicle V side that power reception is possible, when the residual capacity is less than a second predetermined value.

Description

  The present invention relates to a battery pack.

  Conventionally, there has been proposed a power supply facility for transferring power between electric vehicles. This facility includes discharge means for taking out electric power from the battery of the electric vehicle and charging means for charging the battery of another electric vehicle, and enables transmission and reception of electric power between the electric vehicles. Furthermore, this facility includes a battery pack for storing electricity. For this reason, when the electric vehicle on the side providing power does not appear, and when the electric vehicle on the side providing power appears, but the electric vehicle on the side receiving power cannot receive the desired power supply Will supply the electric power stored in the battery pack to the electric vehicle (see Patent Document 1).

JP 2007-252118 A

  However, an electric vehicle that receives power supply in a conventional facility cannot grasp the amount of electricity stored in the battery pack. For example, when the amount of electricity stored in the battery pack is almost zero, the electric vehicle is charged even if it arrives at the facility. You may not be able to receive it. Furthermore, even for the electric vehicle that provides power, the amount of electricity stored in the battery pack cannot be grasped. For example, when the amount of electricity stored in the battery pack is almost 100%, May not be available. Thus, conventional equipment cannot efficiently provide and supply power.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a battery pack capable of efficiently providing and supplying power.

  The battery pack according to the present invention performs charging / discharging with respect to the on-vehicle battery, and when the detected remaining capacity is equal to or greater than the first predetermined value, it is possible to supply power. If the remaining capacity is less than the second predetermined value, the vehicle side is notified that it is possible to receive power.

  According to the present invention, the driver can know whether power can be supplied to the battery pack and whether power can be supplied from the battery pack, and supply and supply of power can be efficiently performed. It can be carried out.

It is a schematic block diagram of the charging / discharging system containing the battery pack which concerns on 1st Embodiment. It is a flowchart which shows the process of the battery pack which concerns on this embodiment. It is a flowchart which shows the process of the battery pack which concerns on 2nd Embodiment. It is a flowchart which shows the process of the battery pack which concerns on 3rd Embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a charge / discharge system including the battery pack according to the first embodiment. As shown in FIG. 1, the charge / discharge system 1 charges and discharges an in-vehicle battery 23 mounted on an electric vehicle V, and includes a battery pack 10, an in-vehicle device 20, an external information device 30, and the like. It has.

  The battery pack 10 supplies power to the in-vehicle battery 23 mounted on the electric vehicle V and receives power from the in-vehicle battery 23. The battery pack 10 and the control device (remaining capacity detection means) 11 and information transmission A device (communication means) 12 and a battery 13 are provided.

  The control device 11 controls the entire battery pack 10 and has a function of detecting the remaining capacity of the battery 13 particularly in the present embodiment. For example, the control device 11 detects the remaining capacity from the battery voltage. Furthermore, the control device 11 has a function of storing the detected remaining capacity. Further, when the electric vehicle V stops at an appropriate position with respect to the battery pack 10, the control device 11 controls charging / discharging with respect to the in-vehicle battery 23.

  The information transmission device 12 is capable of information communication with the in-vehicle device 20 and the external information device 30, and particularly in the present embodiment, information on the position of the battery pack 10 and whether or not the device itself can supply power. It is possible to send a notification as to whether or not it is possible to receive provision of power. Further, the information transmission device 12 can receive information on the remaining capacity of the in-vehicle battery 23 from the in-vehicle device 20 via the external information device 30 or directly from the in-vehicle device 20 without going through the external information device 30. .

  The in-vehicle device 20 includes a control device 21, an information transmission device 22, and an in-vehicle battery 23. The control device 21 controls the entire in-vehicle device 20, and particularly has a function of detecting the remaining capacity of the in-vehicle battery 23 in this embodiment. For example, the control device 21 detects the remaining capacity from the battery voltage, or detects the remaining capacity from the periphery of the charge capacity and the discharge capacity accompanying the use of power. Further, the control device 21 has a function of storing the detected remaining capacity. Furthermore, the control device 21 controls charging / discharging of the in-vehicle battery 23 when the electric vehicle V stops at an appropriate position with respect to the battery pack 10.

  The information transmission device 22 is capable of information communication with the battery pack 10 and the external information device 30, and in this embodiment, in particular, can transmit information on the position of the electric vehicle V and information on the remaining capacity of the in-vehicle battery 23. It has become. Furthermore, the information transmission device 22 can transmit information on the remaining capacity of the in-vehicle battery 23 to the battery pack 10 via the external information device 30 or directly to the battery pack 10 without going through the external information device 30. .

  The external information device 30 includes an information aggregation device 31 and an information transmission device 32. Here, a plurality of battery packs 10 may be installed in a parking facility, for example. In such a case, the information aggregating apparatus 31 aggregates the position information of each battery pack 10 and the information on the remaining capacity of the battery pack 10. Further, the information transmission device 32 is capable of information communication with the battery pack 10 and the in-vehicle device 20, and for example, the position information of one battery pack 10 selected based on the remaining capacity information of the plurality of battery packs 10. Is transmitted to the electric vehicle V.

Furthermore, in this embodiment, the information transmission device 12 of the battery pack 10 notifies the electric vehicle V side that power can be supplied when the detected remaining capacity is equal to or greater than the first predetermined value. If the remaining capacity is less than the second predetermined value, the electric vehicle V side is notified that it is possible to receive power. This notification is performed directly or via the external information device 30.

  Thus, the driver can know whether the battery pack 10 can be supplied with power and can receive power from the battery pack 10, and can efficiently supply and supply power. Because it can.

  In addition, in this embodiment, the information transmission device 12 of the battery pack 10 acquires information on the remaining capacity of the in-vehicle battery 23, the remaining capacity of the in-vehicle battery 23 is less than a second predetermined value, and the remaining capacity of the battery 13 Is equal to or greater than the first predetermined value, the electric vehicle V is notified that power can be supplied. Similarly, the information transmission device 12 can be provided with electric power when the remaining capacity of the in-vehicle battery 23 is equal to or greater than the first predetermined value and the remaining capacity of the battery 13 is less than the second predetermined value. Notify the electric vehicle V side that there is. This notification is also made directly or via the external information device 30.

  Thereby, when the remaining capacity of the in-vehicle battery 23 is small and the remaining capacity of the battery 13 in the battery pack 10 is large, the vehicle side is notified that power can be supplied, and the remaining capacity of the in-vehicle battery 23 is In many cases, when the remaining capacity of the battery 13 in the battery pack 10 is small, the vehicle side is notified that it is possible to receive power. Thereby, provision and supply of electric power can be performed more efficiently.

  FIG. 2 is a flowchart showing processing of the battery pack 10 according to the present embodiment. First, as shown in FIG. 2, the control device 11 of the battery pack 10 detects the remaining capacity of the battery 13 (S1). Next, the information transmission device 12 acquires information on the remaining capacity of the in-vehicle battery 23 directly from the in-vehicle device 20 or via the external information device 30 (S2).

  Thereafter, the control device 11 of the battery pack 10 determines whether or not the remaining capacity of the battery 13 is equal to or greater than a first predetermined value (S3). Here, the first predetermined value is, for example, 60%.

  When it is determined that the remaining capacity of the battery 13 is greater than or equal to the first predetermined value (S3: YES), the control device 11 determines whether or not the remaining capacity of the in-vehicle battery 23 is less than the second predetermined value. (S4). Here, the second predetermined value is 40%, for example.

  When it is determined that the remaining capacity of the in-vehicle battery 23 is less than the second predetermined value (S4: YES), the information transmission device 12 is connected to the electric vehicle V in which the in-vehicle battery 23 is mounted directly or via the external information device 30. On the other hand, it is notified that power can be supplied (S5). Then, the process shown in FIG. Thereby, when the remaining capacity of the in-vehicle battery 23 is small and the remaining capacity of the battery 13 in the battery pack 10 is large, it is possible to notify the electric vehicle V side that power can be supplied, and the battery pack 10 has been reached. As a result, it is possible to prevent a situation in which charging cannot be received.

  On the other hand, when it is determined that the remaining capacity of the in-vehicle battery 23 is not less than the second predetermined value (S4: NO), the information transmission apparatus 12 ends without performing the notification. Thus, it is possible to prevent notification to the electric vehicle V that does not require charging.

  When it is determined that the remaining capacity of the battery 13 is not equal to or greater than the first predetermined value (S3: NO), the control device 11 of the battery pack 10 determines that the remaining capacity of the battery 13 of the battery pack 10 is less than the second predetermined value. It is determined whether or not (S6).

  When it is determined that the remaining capacity of the battery 13 is less than the second predetermined value (S6: YES), the control device 11 determines whether or not the remaining capacity of the in-vehicle battery 23 is greater than or equal to the first predetermined value. (S7).

  When it is determined that the remaining capacity of the in-vehicle battery 23 is equal to or greater than the first predetermined value (S7: YES), the information transmission device 12 is connected to the electric vehicle V in which the in-vehicle battery 23 is mounted directly or via the external information device 30. It notifies the fact that it is possible to receive power supply (S8). Then, the process shown in FIG. Thereby, when the remaining capacity of the in-vehicle battery 23 is large and the remaining capacity of the battery 13 in the battery pack 10 is small, it is possible to notify the electric vehicle V side that it is possible to receive provision of power. It is possible to prevent a situation where power can no longer be provided despite arriving at the pack 10.

  When it is determined that the remaining capacity of the battery 13 is not less than the second predetermined value (S6: NO), and when it is determined that the remaining capacity of the in-vehicle battery 23 is not equal to or greater than the first predetermined value (S7: NO) The processing illustrated in FIG. 2 ends without notifying that the transmission device 12 can receive power. Thereby, when it is determined “NO” in step S6, it is possible to prevent the notification from being made even though it is not necessary to receive provision of electric power, and “NO” is determined in step S7. In such a case, it is possible to prevent the electric vehicle V that cannot supply power from being notified.

  In the flowchart shown in FIG. 2, the second predetermined value is smaller than the first predetermined value. However, the second predetermined value is not limited to this, and both may be the same value (for example, 50%).

  In this way, according to the battery pack 10 according to the first embodiment, when the remaining capacity of the battery 13 is equal to or greater than the first predetermined value, it is indicated to the electric vehicle V side that power can be supplied. If the remaining capacity is less than the second predetermined value, the electric vehicle V is notified that it is possible to receive power. Therefore, the driver can know whether the battery pack 10 can be supplied with power and can receive power from the battery pack 10, and can efficiently supply and supply power. be able to.

  Further, when the remaining capacity of the in-vehicle battery 23 is less than the second predetermined value and the remaining capacity of the battery 13 is greater than or equal to the first predetermined value, it is indicated to the electric vehicle V side that power can be supplied. Therefore, when the remaining capacity of the in-vehicle battery 23 is small and the remaining capacity of the battery 13 in the battery pack 10 is large, the electric vehicle V side is notified that power can be supplied. Further, when the remaining capacity of the in-vehicle battery 23 is equal to or greater than the first predetermined value and the remaining capacity of the battery 13 is less than the second predetermined value, it is indicated that the electric vehicle V side can receive power. Therefore, when the remaining capacity of the in-vehicle battery 23 is large and the remaining capacity of the battery 13 in the battery pack 10 is small, the electric vehicle V side is notified that power can be provided. Therefore, it is possible to more efficiently provide and supply power.

  Next, a second embodiment of the present invention will be described. The charge / discharge system according to the second embodiment is the same as that of the first embodiment, but a part of the configuration is different. Hereinafter, differences from the first embodiment will be described.

  First, in the second embodiment, the information transmission device 22 of the in-vehicle device 20 sends the information on the set route set to guide the electric vehicle V to the destination directly or via the external information device 30 to the battery pack 10. It has a function to send. For this reason, in the second embodiment, the information transmission device 12 of the battery pack 10 acquires information on the information on the set route.

In addition, in the second embodiment, the control device 11 of the battery pack 10 has a function of determining whether or not to perform notification based on information on the set route information. In detail, the information transmission device 12 notifies the electric vehicle V side that power can be supplied only when the charging station is set as a waypoint in the set route. This is because it is possible to prevent notification to the electric vehicle V that does not need to stop at the charging stand.

  Furthermore, when the set route is not the shortest route, the information transmission device 12 notifies the electric vehicle V that it can receive power. This is because the notification is made to the electric vehicle V that does not travel on the shortest route and has a certain amount of remaining capacity of the in-vehicle battery 23, and can be appropriately notified.

  FIG. 3 is a flowchart showing processing of the battery pack 10 according to the second embodiment. In FIG. 3, the same processes as those in FIG.

  As shown in FIG. 3, after detecting the remaining capacity of the battery 13 (after S <b> 1), the information transmission device 12 determines the remaining capacity of the in-vehicle battery 23 directly from the in-vehicle device 20 or via the external information device 30. Information and information on the set route are acquired (S10).

  Thereafter, when it is determined in step S4 that the remaining capacity of the in-vehicle battery 23 is less than the second predetermined value (S4: YES), the control device 11 determines whether or not the charging station is set as a waypoint in the set route. Is determined (S11).

  When it is determined that the charging station is not set as a waypoint (S11: NO), the information transmission apparatus 12 ends without performing the notification. Accordingly, it is possible to prevent notification to the electric vehicle V which does not have a charging stand at the waypoint and does not need to be charged.

  On the other hand, if it is determined that the charging station is set as a transit point (S11: YES), the information transmission device 12 notifies that power can be supplied (S5), and the process shown in FIG. 3 ends.

  By the way, when it is determined in step S7 that the remaining capacity of the in-vehicle battery 23 is greater than or equal to the first predetermined value (S7: YES), the control device 11 determines whether or not the set route is the shortest route (S12). ).

  When it is determined that the set route is the shortest route (S12: YES), the information transmission device 12 does not notify and the processing illustrated in FIG. 3 ends. Here, it is possible to prevent a notification from being made to the electric vehicle V having a sufficient remaining capacity for a destination on the shortest route.

  When it is determined that the set route is not the shortest route (S12: NO), the information transmission device 12 notifies that it is possible to receive power supply (S8), and the process shown in FIG. 3 ends.

  In this way, according to the battery pack 10 according to the second embodiment, the supply and supply of electric power can be (more) efficiently performed as in the first embodiment.

  Furthermore, according to the second embodiment, the charging stand is notified to the electric vehicle V side that power can be supplied only when the charging stand is set as a waypoint in the set route. It is possible to prevent notification to the electric vehicle V that does not need to stop by.

  In addition, when the set route is not the shortest route, the electric vehicle V side is notified that it is possible to receive the supply of electric power. Therefore, the electric vehicle does not travel on the shortest route and has a certain margin in the remaining capacity of the in-vehicle battery 23. V will be notified and can be notified appropriately.

  Next, a third embodiment of the present invention will be described. The charge / discharge system according to the third embodiment is the same as that of the second embodiment, but a part of the configuration is different. Hereinafter, differences from the second embodiment will be described.

  The information transmission device 12 according to the second embodiment has notified the electric vehicle V side that power can be supplied when the charging station is set as a transit point in the set route. However, there is a high possibility that the driver will drop in at the charging station determined by the set route. In such a case, it may not be appropriate to give notification.

  Therefore, in the third embodiment, the information transmission device 12 does not notify the electric vehicle V side that power can be supplied when the charging station is set as a waypoint in the set route, and the charging is performed. When the stand is not set as a transit point, the above notification is performed.

  FIG. 4 is a flowchart showing processing of the battery pack 10 according to the third embodiment. In FIG. 4, the same processes as those in FIG.

  As shown in FIG. 4, when it is determined in step S4 that the remaining capacity of the in-vehicle battery 23 is less than the second predetermined value (S4: YES), the control device 11 sets the charging station as a transit point in the set route. It is determined whether it is set (S13).

  If it is determined that the charging station is not set as a transit point (S13: NO), the information transmission device 12 notifies that power can be supplied (S5), and the process shown in FIG. 4 ends.

  On the other hand, when it is determined that the charging station is set as a waypoint (S13: YES), the information transmission device 12 does not notify and the processing illustrated in FIG. 4 ends. Thereby, it is possible to prevent notification to the electric vehicle V that is highly likely to stop at the charging station on the set route.

  In this way, according to the battery pack 10 according to the third embodiment, similarly to the second embodiment, power can be supplied and supplied more efficiently, and the vehicle can be mounted without traveling on the shortest route. The notification is made to the electric vehicle V having a certain amount of remaining capacity of the battery 23, and can be appropriately notified.

  Furthermore, according to the third embodiment, when the charging station is set as a waypoint in the set route, the electric vehicle V side is not notified that power can be supplied. For this reason, when a charging station that should stop by the set route is set, notification is not performed, and unnecessary notification can be prevented.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above-described embodiments, and modifications may be made without departing from the spirit of the present invention.

  For example, in the above embodiment, the notification is performed based on the remaining capacity of the battery 13 of the battery pack 10 and the remaining capacity of the in-vehicle battery 23, but not limited to this, only the remaining capacity of the battery 13 of the battery pack 10. Notification may be performed based on the notification.

DESCRIPTION OF SYMBOLS 1 ... Charging / discharging system 10 ... Battery pack 11 ... Control apparatus (remaining capacity detection means)
12. Information transmission device (communication means)
DESCRIPTION OF SYMBOLS 13 ... Battery 20 ... In-vehicle apparatus 21 ... Control apparatus 22 ... Information transmission apparatus 23 ... In-vehicle battery 30 ... External information apparatus 31 ... Information aggregation apparatus 32 ... Information transmission apparatus V ... Electric vehicle

Claims (5)

A battery pack that charges and discharges an in-vehicle battery,
A remaining capacity detecting means for detecting the remaining capacity of the battery;
A communication means capable of communicating with the vehicle side,
The communication means notifies the vehicle side that power can be supplied when the remaining capacity detected by the remaining capacity detecting means is equal to or greater than a first predetermined value, and the remaining capacity is the second When the battery pack is less than the predetermined value, the vehicle side is notified that it is possible to receive power supply. The communication means acquires information on the remaining capacity of the in-vehicle battery, the remaining capacity of the in-vehicle battery is less than a second predetermined value, and the remaining capacity detected by the remaining capacity detecting means is greater than or equal to a first predetermined value. If it is, the vehicle side is notified that the power can be supplied, the remaining capacity of the in-vehicle battery is not less than a first predetermined value, and the remaining capacity detected by the remaining capacity detecting means is the first 2. The battery pack according to claim 1, wherein if it is less than a predetermined value of 2, the vehicle side is notified that it is possible to receive provision of power. The communication means obtains information on a set route set to guide the vehicle to a destination, and supplies power only when a charging station is set as a transit point in the set route. The battery pack according to claim 1 or 2, wherein the vehicle side is notified that it is possible. The communication means acquires information on a set route set to guide the vehicle to a destination, and can supply power when a charging station is set as a transit point in the set route. The battery pack according to claim 1, wherein the vehicle side is not notified of the presence. The communication means acquires information on a set route set for guiding the vehicle to a destination, and notifies the vehicle side that it is possible to receive power if the set route is not the shortest route. The battery pack according to any one of claims 1 to 4, wherein:

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