JP5686114B2 - Charge control device - Google Patents

Description

  The present invention relates to a charging control device including a plurality of charging units for outputting electric power to a power storage device mounted on a vehicle.

  As this type of control device, for example, as can be seen in Patent Document 1 below, a charging allowable current is supplied to a vehicle connected to each of the charging units so that the total output current of the plurality of charging units does not exceed a threshold value. There has also been proposed one that notifies and cuts off power supply to vehicles that do not respond to this.

JP 2011-125178 A

  However, in the above device, if there is a vehicle that does not comply with the chargeable current, the total value of the output current of the charging unit is detected in order to cut off the power supply to the vehicle after detecting the carry-out of the current exceeding the chargeable current. May become excessively large once.

  The present invention has been made in the course of solving the above-described problems, and an object thereof is to provide a new charge control device including a plurality of charging units for outputting electric power to a power storage device mounted on a vehicle. It is in.

  Hereinafter, means for solving the above-described problems and the operation and effect thereof will be described.

The present invention provides a plurality of charging units (CSa, CSb, CSc) for outputting power to a power storage device (10) mounted on a vehicle (EVa, EVb, EVc), and outputs from the plurality of charging units to the vehicle. A total upper limit setting means (32) for setting a total upper limit value that is an upper limit value of the total power to be generated, and each of the total power output to the vehicle from the plurality of charging units is equal to or less than the total upper limit value Individual upper limit value setting means (S12) for setting an individual upper limit value that is an upper limit value of power output from the charging unit, and upper limit information for notifying the vehicle of information related to the individual upper limit value set by the individual upper limit value setting means In order to output electric power from the notification means (S16, S26) and at least two charging units, normal power output processing from the at least two charging units is performed in response to the notification by the upper limit information notification unit. In order to avoid a situation in which the total power output from the at least two charging units to the vehicle exceeds the total upper limit value even when the set individual upper limit value is not observed, Limiting means (S24, S44, S52, S18a) for limiting the power output from one of the charging units to the vehicle to a value smaller than the individual upper limit value, and the state limited by the limiting means, Confirming means (S28, S48, S56, S18a) for confirming whether or not the electric power output from the remaining charging unit not restricted by the restricting means is equal to or less than the individual upper limit value; Provided with release means (S32, S60) for releasing the restriction by the restriction means on the condition that it is confirmed that the value is not more than the individual upper limit value. And features.

  In the case where the vehicle does not have a function to cope with the notification by the upper limit information notification unit, the individual upper limit value may not be maintained despite the notification by the upper limit information notification unit. In this regard, in the above invention, by providing a limiting means and temporarily limiting the output power from some of the charging units, a situation where the total upper limit value is exceeded can be avoided even if the individual upper limit value is not observed. . The subsequent response can be changed depending on whether it is protected or not, and as a result, charge control can be appropriately performed according to the situation.

  In addition, about the expansion of the concept regarding the following typical embodiment concerning this invention, it describes in the column of "other embodiment" after typical embodiment.

1 is a system configuration diagram according to a first embodiment. FIG. The flowchart which shows the process sequence of the charge control concerning the embodiment. The time chart which shows the charge process concerning the embodiment. The time chart which shows the charge process concerning 2nd Embodiment. The flowchart which shows the process sequence of the charge control concerning 3rd Embodiment. The flowchart which shows the process sequence of the charge control concerning 4th Embodiment.

<First Embodiment>
Hereinafter, a first embodiment in which a charge control device according to the present invention is applied to a charge control device capable of simultaneously charging three vehicles will be described with reference to the drawings.

  The charging stations CSa, CSb, CSc shown in FIG. 1 all supply power to the vehicle. In the figure, the vehicle EVa, EVb, EVc is electrically connected to the charging stations CSa, CSb, CSc, respectively. Each of these vehicles receives an in-vehicle battery 10, a power conversion circuit 12 that can be connected to an external power source and charges the in-vehicle battery 10 with power from the external power source, and a charge instruction signal from the external power source side. Receiver 14.

  The charging stations CSa, CSb, CSc are all interfaces for supplying electric power from the commercial power source 36 to the vehicle. That is, the charging stations CSa, CSb, CSc are connected to the commercial power supply 36 via the power supply side breaker 34. The power source side breaker 34 is a circuit that interrupts the current flow path when the current flowing through the power source side breaker 34 becomes equal to or greater than the power source side cutoff current.

  Charging stands CSa, CSb, CSc are connected to stand-side breaker 20 via relays Ra, Rb, Rc, respectively. The stand-side breaker 20 is a circuit that cuts off the current flow path when the current flowing through the stand-side breaker 20 becomes equal to or higher than the stand-side cutoff current ILim. The stand-side breaker 20 can be connected to the power conversion circuit 12 in the vehicle via the power supply lines L1 and L2.

  The charging stations CSa, CSb, and CSc further include a current sensor 24 that detects currents Ia, Ib, and Ic output via the power supply line L1, and a stand-side transceiver 22. The stand side transceiver 22 has a function of outputting the current I # (# = a, b, c) detected by the current sensor 24 to the external power source side transceiver 30. Further, the stand-side transceiver 22 has a function of outputting a signal (pilot signal CPLT) on which charging guide information is superimposed to the receiver 14 in the vehicle based on a signal input from the power-supply side transceiver 30 to the stand-side transceiver 22. Have Specifically, the signal input to the stand-side transceiver 22 is a signal related to the upper limit value of the current (individual current upper limit value Ith #). Pilot signal CPLT is a signal representing individual current upper limit value Ith # by the time ratio of time of logic “H” to one period of logic H and logic L.

  The individual current upper limit value Ith # is calculated by the control device 32. The control device 32 further has a function of opening / closing the relay R # of the charging station CS # via the power supply side transceiver 30. The control device 32 determines the total power consumption of the charging stations CSa, CSb, CSc in advance even if there is a vehicle EVa-EVc that does not comply with the individual current upper limit value Ith # under predetermined conditions. Processing is performed to limit power by opening relay R # so as not to exceed the total power upper limit value Ptth.

  FIG. 2 shows a procedure of processing for limiting the power. This process is repeatedly executed by the control device 32 at a predetermined cycle, for example.

  In this series of processes, first, in step S10, it is determined whether or not there is a vehicle (j) newly requesting charging. This process is, for example, a process of determining that there is a vehicle (j) that newly requests charging when a charging station CSj that has not been connected to the vehicle so far is connected to the vehicle. Here, among the vehicles EVa to EVc, a vehicle that newly requests charging is represented by a variable j.

  In the subsequent step S12, upper limit values (individual power upper limit values Ptha, Pthb, Pthc) of power supplied to the charging stations CSa, CSb, CSc are calculated. Here, the total value of the upper limit values Ptha, Pthb and Pthc is set to be equal to or less than the total power upper limit value Ptth. Here, the total power upper limit value Ptth is assumed to be a power corresponding to a power equal to or lower than the power supply side cutoff current. That is, for example, when the power supply destination of the commercial power supply 40 exists other than the charging stations CSa, CSb, CSc, the total power consumption is reduced by corresponding to a current value smaller than the power supply side cutoff current. It becomes possible to make it below the power supply side cutoff current. In the present embodiment, when the output currents of the charging stations CSa, CSb, and CSc become the stand-side cutoff current Ilim, it is assumed that their total power is larger than the total power upper limit value Ptth. . Further, it is assumed that the total power upper limit value Ptth is larger than the power corresponding to the stand-side cutoff current Ilim.

  In a succeeding step S14, it is determined whether or not there is a vehicle (k) that is being charged. If it is determined that there is a vehicle (k) that is being charged, the individual current upper limit value Ithk is output to the vehicle (k) that is being charged in step S16. For example, when the newly requested vehicle (j) is the vehicle EVc and the vehicle (k) being charged is the vehicles EVa, EVb, the vehicle EVa, EV is output before the individual current upper limit value Ithc is output to the vehicle EVc. The individual current upper limit values Ithb and Ithc are output to EVb.

  Here, the individual current upper limit value Ithk is set to a value corresponding to the corresponding individual power upper limit value Pthk. That is, since the output voltage of the commercial power supply 36 is alternating current and the amplitude value is determined, the output power of the charging station CSk is determined only by the output current. For this reason, providing the upper limit value of the output current as the individual current upper limit value Ithk is equivalent to outputting information on the individual power upper limit value Pthk.

  In the above process, the individual current upper limit value Ithj is not output to the vehicle (j) that is newly requested for charging when the vehicle (k) being charged does not comply with the updated individual power upper limit value Pthk. , CSb, CSc is for avoiding a situation in which the total power output exceeds the total power upper limit value Ptth. At this stage, the relay Rj is kept open in the charging station CSj corresponding to the vehicle (j) that newly requests charging. This constitutes a limiting means in the present embodiment.

  In subsequent step S18, it is determined whether or not any of the currents Ia, Ib, and Ic input to the control device 32 from the charging stations CSa, CSb, and CSc exceeds the individual current upper limit values Itha, Ithb, and Ithc. To do. This process is for confirming whether or not the vehicle (k) that is being charged keeps the individual current upper limit value Ithk. This processing constitutes confirmation means in the present embodiment.

  When an affirmative determination is made in step S18, in step S20, for the vehicle EV * that does not comply with the individual current upper limit value Ith *, the corresponding relay R * is opened and the flag F * indicating that it is not observed is set to “1”. To do.

  When the process of step S20 is completed or when a negative determination is made in step S18, the process proceeds to step S22. In step S22, it is determined whether or not the sum of the current Ik of the vehicle (k) that is already charged and the stand-side cutoff current ILim is equal to or less than the total current upper limit Itth. Here, the total current upper limit Itth corresponds to the total power upper limit Ptth. In this process, even if the newly requested vehicle (j) does not comply with the individual current upper limit value Ithj, the total power output from the charging stations CSa, CSb, CSc does not exceed the total power upper limit value Ptth. It is for judging whether or not. That is, even when the vehicle (j) that newly requests charging does not meet the individual current upper limit value Ithj, the output power of the charging station CSj is limited to the stand-side cutoff current ILim by the stand-side breaker 20. For this reason, when an affirmative determination is made in step S22, even if the newly requested vehicle (j) does not comply with the individual current upper limit value Ithj, the power output from the charging stations CSa, CSb, CSc The sum does not exceed the total power upper limit value Ptth.

  If a negative determination is made in step S22, the relay Rk corresponding to the vehicle (k) being charged is once opened in step S24. In this process, even if the newly requested vehicle (j) does not comply with the individual current upper limit value Ithj, the total power output from the charging stations CSa, CSb, CSc does not exceed the total power upper limit value Ptth. It is for doing so. This process constitutes a limiting means in the present embodiment.

  When the process of step S24 is completed, when a negative determination is made at step S14, or when an affirmative determination is made at step S22, the process proceeds to step S26. In step S26, the individual current upper limit value Ithj is output via the charging station CSj to the vehicle (j) newly requesting charging, and the relay Rj is closed. In the subsequent step S28, it is determined whether or not the current Ij output from the charging station CSj corresponding to the vehicle (j) newly requested for charging is larger than the individual current upper limit value Ithj. This process is for confirming whether or not the vehicle (j) newly requesting charging satisfies the individual current upper limit value Ithj, and constitutes confirmation means in the present embodiment.

  If an affirmative determination is made in step S28, it is assumed that the newly requested vehicle (j) does not comply with the individual current upper limit value Ithj, and in step S30, the corresponding relay Rj is opened, and a flag Fj indicating that it is not observed is set. “1”.

  When the process of step S30 is completed or when a negative determination is made in step S28, the relay Rk opened in step S24 is closed in step S32. This process constitutes a release unit in the present embodiment. Here, the relay R * opened in step S20 is not closed.

  In addition, when the process of step S32 is completed, or when negative determination is made in step S10, this series of processes is once ended.

  FIG. 3 shows an execution example of the above process. Here, a case where the vehicles being charged are the vehicles EVa and EVb, and the vehicle (j) to which charging is newly requested is the vehicle EVc is illustrated.

  First, the normal state (normal in the figure) will be described. In this case, when a new charging request is generated from the vehicle EVc, the individual power upper limit values Ptha and Pthb indicated by the alternate long and short dash line in the figure decrease at time t1. Along with this, the electric power Pa, Pb output from the charging stations CSa, CSb decreases so as to be equal to or lower than the individual power upper limit values Ptha, Pthb, so that the vehicles EVa, EVb keep the individual power upper limit values Ptha, Pthb. That is confirmed.

  Thereafter, at time t2, the relays Ra and Rb are opened, so that the electric power Pa and Pb output from the charging stations CSa and CSb are set to zero.

  Next, at time t3, information related to the individual power upper limit value Pthc (individual current upper limit value Ithc) is output to the vehicle EVc, so that the power Pc output from the charging station CSc increases. Here, since it is confirmed that the electric power Pc output from the charging station CSc is equal to or less than the individual electric power upper limit value Pthc, the relays Ra and Rb are closed at time t4. As a result, power below the individual power upper limit values Ptha, Pthb, Pthc is supplied to each of the vehicles EVa, EVb, EVc.

  Next, an abnormal time (abnormal in the figure) will be described. In this case, when a new charging request is generated from the vehicle EVc, the individual power upper limit values Ptha and Pthb indicated by the one-dot chain line in the drawing are updated and decreased at time t1, but the power Pb output from the charging station CSb is reduced. Since individual power upper limit Pthb is exceeded, relay Rb is opened at time t2.

  Thereafter, the relay Ra is opened at time t3, so that the electric power Pa output from the charging station CSa is set to zero. Next, at time t4, information (individual current upper limit value Ithc) related to the individual power upper limit value Pthc is output to the vehicle EVc, so that the electric power Pc output from the charging station CSc increases. Here, since it is confirmed that the electric power Pc output from the charging station CSc is equal to or less than the individual electric power upper limit value Pthc, the relay Ra is closed at time t5.

  Hereinafter, some of the effects of this embodiment will be described.

  (1) When the individual current upper limit value Ith # is newly output, the output is limited by opening some relays R # of the charging stations CSa, CSb, CSc. Thereby, even if there is a vehicle that does not follow the new individual current upper limit value Ith #, the total output power of the charging stations CSa, CSb, CSc can be made equal to or lower than the total power upper limit value Ptth.

(2) Even if the charging current of the vehicle (j) to which charging is newly requested becomes the stand-side cutoff current ILim, when the total output power of the charging stations CSa, CSb, CSc is less than or equal to the total power upper limit value Ptth, The setting was made so as not to temporarily limit power. Thereby, a charging process can be performed smoothly.
<Second Embodiment>
Hereinafter, the second embodiment will be described with reference to the drawings with a focus on differences from the first embodiment.

  In the first embodiment, when there is a vehicle EV # that does not follow the individual current upper limit value Ith #, the corresponding relay R # is opened, and the individual current upper limit values Itha, Ithb, and Ithc are updated accordingly. I didn't do it. However, since the individual current upper limit values Itha, Ithb, and Ithc in this case are assumed not to open the relay R #, when charging is performed in this state, the outputs of the charging stations CSa, CSb, and CSc The total power has a margin with respect to the total power upper limit value Ptth.

  Therefore, in the present embodiment, as shown in FIG. 4, when the vehicle EVb does not satisfy the individual current upper limit value Ithb, the sum of the individual current upper limit value Itha and the individual current upper limit value Ithc becomes the total current upper limit value Itth. The individual current upper limit value Ithc is updated. That is, prior to the process of step S26 of FIG. 2, the individual current upper limit value Ithc calculated in step S12 is updated. Thereby, the time required until all charging of the vehicles EVa to EVc is completed can be shortened.

Further, in the present embodiment, charging of the vehicle EVc that is newly requested for charging and the vehicle EVb that does not comply with the individual current upper limit value Ithb is performed in a time-sharing manner. That is, when charging of the vehicle EVc continues for a predetermined time, the individual current upper limit value Ithc is once set to zero, and the individual current upper limit value Ithb is set to a value immediately before the individual current upper limit value Ithc is set to zero. Thereby, the vehicle EVb is charged over a predetermined time. Although not shown in the figure, the previous individual current upper limit value Ithc is output as the individual current upper limit value Ithb, and when the relay Rb is closed, the relay Ra is opened once and the output of the charging station CSa is output. It is desirable to make restrictions.
<Third Embodiment>
Hereinafter, the third embodiment will be described with reference to the drawings with a focus on differences from the first embodiment.

  In the present embodiment, when charging is completed in some vehicles, the process for updating the individual current upper limit value Ith # is performed in the manner shown in FIG. This process is repeatedly executed by the control device 32 at a predetermined cycle, for example.

  In this series of processes, in step S40, it is determined whether or not there are a plurality of vehicles (k) that are being charged at the stage when a fully charged vehicle (p) is generated. If a positive determination is made in step S40, the process proceeds to step S42. In step S42, the individual current upper limit values Ithk1 and Ithk2 of the vehicle being charged are updated. That is, for example, when the vehicle EVa is a fully charged vehicle and the vehicles EVb and EVc are being charged, the individual current upper limit values Ithb and Ithc are updated. This is performed in order to increase the total supply power of the vehicles EVb and EVc in view of the completion of charging of the vehicle EVa. Specifically, “Ithb + Ithc = Itth” is set.

  In subsequent step S44, the relay Rk2 corresponding to one of the vehicles k being charged is opened. This process is performed so that the total output power of the charging stations CSa, CSb, and CSc does not exceed the total power upper limit value Ptth even when the other vehicle does not observe the updated individual current upper limit value Ithk1. In this embodiment, the limiting means is configured.

  In subsequent step S46, the individual current upper limit value Ithk1 is output. In step S48, it is determined whether current Ik1 output to the corresponding vehicle exceeds individual current upper limit value Ithk1. This process constitutes confirmation means in the present embodiment. If an affirmative determination is made in step S48, the flag Fk1 is set to “1” in step S50. The flag Fk1 becomes “1” to indicate that the individual current upper limit value Ithk1 has not been observed.

  When the process of step S50 is completed or when a negative determination is made in step S48, the relay Rk1 is opened and the relay Rk2 is closed in step S52. Here, even if a negative determination is made in step S48, the relay Rk1 is opened in step S52 even if the updated individual current upper limit value Ithk2 is not observed. This is to prevent the total output power of CSb and CSc from exceeding the total power upper limit value Ptth. This process constitutes a limiting means in the present embodiment.

  In the subsequent step S54, the individual current upper limit value Ithk2 is output. In step S56, it is determined whether or not current Ik2 output to the corresponding vehicle is equal to or smaller than individual current upper limit value Ithk2. This process constitutes confirmation means in the present embodiment. If an affirmative determination is made in step S56, the relay Rk2 is opened and the flag Fk2 is set to "1" in step S58. The flag Fk2 becomes “1” to indicate that the individual current upper limit value Ithk2 has not been observed.

  When the process of step S58 is completed or when a negative determination is made in step S56, the process proceeds to step S60. In step S60, the relay Rk1 is closed on condition that the flag Fk1 is not “1”.

  When the process of step S60 is completed or when a negative determination is made in step S40, this series of processes is temporarily ended.

As described above, in the present embodiment, the limiting unit is applied when the individual current upper limit value Ith # of the remaining vehicle is updated as the charging is completed. For this reason, even when there is a vehicle that does not comply with the update of the individual current upper limit value Ith #, the total output power of the charging stations CSa, CSb, CSc does not exceed the total power upper limit value Ptth. can do.
<Fourth Embodiment>
Hereinafter, the fourth embodiment will be described with reference to the drawings with a focus on differences from the first embodiment.

  In the above embodiment, the limiting means is configured by temporarily stopping charging of some vehicles. On the other hand, in this embodiment, instead of the process of stopping charging, the limiting unit is configured as a unit that outputs the limited current upper limit value Ith # 0 that is smaller than the individual current upper limit value Ith #.

  FIG. 6 shows a procedure of processing for limiting power according to the present embodiment. This process is repeatedly executed by the control device 32 at a predetermined cycle, for example. In FIG. 6, processes corresponding to the processes shown in FIG. 2 are given the same step numbers for convenience.

  In this series of processes, when an affirmative determination is made in step S14, the vehicle (k) being charged is smaller than the individual current upper limit value Ithk corresponding to the individual power upper limit value Pthk calculated in step S12 in step S16a. The limit current upper limit value Ithk0 is output. This is because the total output power of the charging stations CSa, CSb, CSc does not exceed the total power upper limit value Ptth even if the vehicle (j) that newly requests charging does not meet the individual current upper limit value Ithj. In this embodiment, the limiting means is configured. This can be realized by calculating the limit current upper limit value Ithk0 so as to satisfy “ΣIthk0 + ILim ≦ Itth”.

When the process of step S30 ends or when a negative determination is made in step S28, the individual current upper limit value Ithk is applied to the vehicle (k) being charged on the condition that an affirmative determination is made in step S18a. Is output.
<Other embodiments>
Each of the above embodiments may be modified as follows.

"Total upper limit setting method"
The present invention is not limited to determining the total power upper limit value Ptth. Since the voltage amplitude of the AC power is determined, the total power upper limit value is determined accordingly as a means for setting the total current upper limit value.

"Individual upper limit setting method"
It is not limited to the means for setting the individual power upper limit value Pth #, but may be means for setting the individual current upper limit value Ith #.

"Upper limit information notification means"
Not only the individual current upper limit value Ith # but also the individual power upper limit value Pth # may be notified, for example.

  It is not limited to the one based on CPLT. For example, PLC (power line communication) may be used, and further notification may be made by wireless communication.

“About blocking means”
As illustrated in the above embodiment, the circuit is not limited to the circuit (stand-side breaker 20) that automatically cuts off the electrical path due to overcurrent. For example, a function of automatically shutting off regardless of an external signal may be installed so that an overcurrent can be quickly dealt with, and an operation signal by the control device 32 may be operable. In this case, the stand-side breaker 20 and the relay R # can be a single member.

About the charging unit
It is not limited to means for outputting two-phase AC power, but may be means for outputting three-phase AC power.

  It is good also as a non-contact electric power feeder not only having wiring (electric power supply line L1, L2) which outputs electric power.

  It should be noted that not only AC power but also DC power output, if the power conversion circuit on the vehicle side includes an inductor, the period of increasing or decreasing the current flowing through the inductor or the period of increase relative to the increase / decrease period The charging power can be controlled by the operation of the duty ratio. For this reason, there is a concern that the notified individual power upper limit value Pth # may not be observed, so that the limiting means according to the present invention is effective.

  Further, the number of charging stations is not limited to three, but may be four or more, for example.

"Restriction information notification means"
In the fourth embodiment (FIG. 6), as in the third embodiment (FIG. 5), when a fully charged vehicle is generated, the individual current upper limit value Ithb of the vehicle being charged (for example, the vehicles EVb and EVc), When increasing Ithc, the individual current upper limit value Ithb and the limit current upper limit value Ithc0 may be notified to confirm that the individual current upper limit value Ithb is observed.

  Further, the limit current upper limit value is not limited to the upper limit value at which the total power becomes equal to or lower than the total power upper limit value Ptth even if an unrestricted vehicle is charged with the stand-side cutoff current ILim. For example, it may be zero regardless of the upper limit value that is equal to or less than the total power upper limit value Ptth.

"Restriction means"
In the first embodiment (FIGS. 2 and 3), when a new charge requesting vehicle (for example, vehicle EVc) occurs, the relays Ra and Rb corresponding to the already charged vehicles (for example, vehicles EVa and EVb) are temporarily set. It may be immediately confirmed whether or not the vehicle EVc complies with the individual current upper limit value Ithc by performing an opening operation and outputting the individual current upper limit value Ithc to the vehicle EVc. In this case, after that, the relay Rc is opened, and the new individual current upper limit values Itha and Ithb are sequentially output for the vehicles EVa and EVb, and it is confirmed that these are protected.

  As an execution condition of the restriction, as illustrated in the first embodiment (FIG. 2), the total current exceeds the total current upper limit value Itth even if the new charge requesting vehicle is charged with the stand side cutoff current ILim. Not exclusively. For example, in the case where a means for acquiring maximum charging power information from a new vehicle is provided, the limit execution condition may be that the total current exceeds the total current upper limit value Itth when charging is performed with the maximum charging power.

"About individual restriction means"
It is not limited to electronic control means (relay R #) that cuts off the power output from charging station CS #. For example, an electronically controlled circuit that selectively restricts to any one of a plurality of prescribed amounts may be used. In this case, even if a vehicle that does not perform the restriction is charged with the stand-side cutoff current ILim, the specified amount may be selected and the individual restriction means may be operated so that the total current is equal to or less than the total current upper limit Itth (operation means ).

"Confirmation means and cancellation means"
It is not restricted to what is implement | achieved by the one control apparatus 32. FIG. For example, the confirmation unit may be mounted on the charging station CS #.

“Treatment for vehicles that do not follow the individual upper limit”
In the first embodiment (FIG. 3), when the vehicle being charged (for example, the vehicle EVb) does not follow the individual current upper limit value Ithb, the individual current upper limit value Ithc of the new charge requesting vehicle (for example, the vehicle EVc) is Even if the vehicle EVb continues to be charged with the current charging current, the vehicle EVb may be corrected to a value that is equal to or less than the total current upper limit Itth. However, even in this case, it is desirable to temporarily open the relay Rb before confirming whether the vehicle EVc meets the individual current upper limit value Ithc.

  In the second embodiment (FIG. 4), when both the new charge request vehicle (for example, vehicle EVc) and the vehicle being charged (for example, vehicle EVb) do not comply with the individual current upper limit values Ithb and Ithc, charging is in progress. The vehicle EVb may be charged with the original individual current upper limit value Ithb.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle-mounted battery, 20 ... Stand side breaker (one embodiment of interruption | blocking means), 30 ... Control apparatus, CSa, CSb, CSc ... Charging stand (one embodiment of a charging part).

Claims (9)

A plurality of charging units (CSa, CSb, CSc) for outputting electric power to a power storage device (10) mounted on a vehicle (EVa, EVb, EVc);
A total upper limit setting means (32) for setting a total upper limit that is an upper limit of the total power output from the plurality of charging units to the vehicle;
Individual upper limit value setting means (S12) for setting an individual upper limit value that is an upper limit value of electric power output from each charging unit so that total electric power output from the plurality of charging units to the vehicle is equal to or less than the total upper limit value. )When,
Upper limit information notification means (S16, S26) for notifying the vehicle of information related to the individual upper limit value set by the individual upper limit value setting means;
In order to output power from at least two charging units, the individual upper limit value that is set prior to performing normal power output processing from the at least two charging units in response to notification by the upper limit information notification unit In order to avoid a situation in which the total power output from the at least two charging units to the vehicle exceeds the total upper limit value even if the vehicle is not protected, a part of the at least two charging units is transmitted to the vehicle. Limiting means (S24, S44, S52, S18a) for limiting the output power to a value smaller than the individual upper limit value;
Confirmation means (S28, S48, S56) for confirming whether or not the power output from the remaining charging units not restricted by the restriction means is equal to or less than the individual upper limit value in the state restricted by the restriction means. , S18a),
Release means (S32, S60) for releasing the restriction by the restriction means on the condition that the confirmation means confirms that it is equal to or less than the individual upper limit value ,
The limiting means limits the output power of a part of the plurality of charging units when increasing the output power to at least one of the plurality of charging units whose output power is not zero. Control device. The charging unit includes a shut-off means (20) for shutting off the output of the power to the outside when exceeding the shut-off upper limit value that is an upper limit value of power determined separately from the individual upper limit value,
The limiting means limits the total power to be equal to or lower than the total upper limit value even when the output power of the charging unit that is not limited to a value smaller than the individual upper limit value is a cutoff upper limit value. The charge control device according to claim 1 . A plurality of charging units (CSa, CSb, CSc) for outputting electric power to a power storage device (10) mounted on a vehicle (EVa, EVb, EVc);
A total upper limit setting means (32) for setting a total upper limit that is an upper limit of the total power output from the plurality of charging units to the vehicle;
Individual upper limit value setting means (S12) for setting an individual upper limit value that is an upper limit value of electric power output from each charging unit so that total electric power output from the plurality of charging units to the vehicle is equal to or less than the total upper limit value. )When,
Upper limit information notification means (S16, S26) for notifying the vehicle of information related to the individual upper limit value set by the individual upper limit value setting means;
In order to output power from at least two charging units, the individual upper limit value that is set prior to performing normal power output processing from the at least two charging units in response to notification by the upper limit information notification unit In order to avoid a situation in which the total power output from the at least two charging units to the vehicle exceeds the total upper limit value even if the vehicle is not protected, a part of the at least two charging units is transmitted to the vehicle. Limiting means (S24, S44, S52, S18a) for limiting the output power to a value smaller than the individual upper limit value;
Confirmation means (S28, S48, S56) for confirming whether or not the power output from the remaining charging units not restricted by the restriction means is equal to or less than the individual upper limit value in the state restricted by the restriction means. , S18a),
Release means (S32, S60) for releasing the restriction by the restriction means on the condition that the confirmation means confirms that it is equal to or less than the individual upper limit value,
The charging unit includes a shut-off means (20) for shutting off the output of the power to the outside when exceeding the shut-off upper limit value that is an upper limit value of power determined separately from the individual upper limit value,
The limiting means limits the total power to be equal to or lower than the total upper limit value even when the output power of the charging unit that is not limited to a value smaller than the individual upper limit value is a cutoff upper limit value. The charge control apparatus characterized by the above-mentioned. It said limiting means, upon the output power to start charging of the charging unit was zero, according to claim 3, wherein the output power is to limit the output power of the charging portion not zero Charge control device. The charge control device according to any one of claims 1 to 4, wherein the limiting unit is configured by the charging unit or a circuit on the upstream side of the charging unit. The limiting means is
Individual limiting means (Ra, Rb, Rc) for limiting the output power of each of the plurality of charging units;
Operating means for operating the individual limiting means in order to avoid a situation in which the total power output from the at least two charging units to the vehicle exceeds the total upper limit value;
The charge control device according to claim 5, further comprising:   The charge control device according to claim 6, wherein the restriction by the individual restriction unit is to make the output power of the corresponding charging unit zero. The limiting means blocks notification of information regarding the individual upper limit value from the upper limit information notifying means to a part of the vehicle, and corresponds to a value smaller than the individual upper limit value set by the individual upper limit value setting means. The charge control device according to claim 1, wherein the charge control device is a restriction information notification unit that notifies A plurality of charging units (CSa, CSb, CSc) for outputting electric power to a power storage device (10) mounted on a vehicle (EVa, EVb, EVc);
A total upper limit setting means (32) for setting a total upper limit that is an upper limit of the total power output from the plurality of charging units to the vehicle;
Individual upper limit value setting means (S12) for setting an individual upper limit value that is an upper limit value of electric power output from each charging unit so that total electric power output from the plurality of charging units to the vehicle is equal to or less than the total upper limit value. )When,
Upper limit information notification means (S16, S26) for notifying the vehicle of information related to the individual upper limit value set by the individual upper limit value setting means;
In order to output power from at least two charging units, the individual upper limit value that is set prior to performing normal power output processing from the at least two charging units in response to notification by the upper limit information notification unit In order to avoid a situation in which the total power output from the at least two charging units to the vehicle exceeds the total upper limit value even if the vehicle is not protected, a part of the at least two charging units is transmitted to the vehicle. Limiting means (S24, S44, S52, S18a) for limiting the output power to a value smaller than the individual upper limit value;
Confirmation means (S28, S48, S56) for confirming whether or not the power output from the remaining charging units not restricted by the restriction means is equal to or less than the individual upper limit value in the state restricted by the restriction means. , S18a),
Release means (S32, S60) for releasing the restriction by the restriction means on the condition that the confirmation means confirms that it is equal to or less than the individual upper limit value,
The limiting means blocks notification of information regarding the individual upper limit value from the upper limit information notifying means to a part of the vehicle, and corresponds to a value smaller than the individual upper limit value set by the individual upper limit value setting means. A charge control device, characterized in that it is a restriction information notification means for notifying.

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