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JP-7856028-B2 - Charging control device and charging control method

JP7856028B2JP 7856028 B2JP7856028 B2JP 7856028B2JP-7856028-B2

Inventors

  • 元平 暉人
  • 久保山 裕

Assignees

  • トヨタ自動車株式会社

Dates

Publication Date
20260511
Application Date
20230308

Claims (9)

  1. A charging control device for a vehicle equipped with a power storage device that is charged by power from a charger, The aforementioned charger and a communication unit capable of communicating with each other, The system comprises a control unit that controls charging by the aforementioned charger, The energy storage device can be charged with power based on a first voltage, or power based on a second voltage different from the first voltage. The control unit, after transmitting first information indicating that charging is performed using the first voltage to the charger via the communication unit, performs control to transmit second information indicating that charging is performed using the second voltage when transmitting information regarding the voltage used for charging to the charger again via the communication unit. A charging control device that controls the control unit to transmit the second information to the charger via the communication unit when the charging sequence is stopped between the time the first information is transmitted to the charger via the communication unit and the charging is started, and when the charging sequence is restarted in the same charger that stopped the charging sequence.
  2. The charging control device according to claim 1, wherein the control unit, after transmitting the first information to the charger, and without receiving voltage information from the charger, receives a signal from the charger indicating a mismatch between the first voltage and the voltage information, performs control to transmit the second information to the charger via the communication unit.
  3. The charging control device according to claim 1, wherein the control unit determines that the vehicle has not moved between the time the charging sequence is stopped and the time the charging sequence is restarted, and determines that the charging sequence has been restarted in the same charger.
  4. The charging control device according to claim 1, wherein the control unit determines that the charging sequence has been restarted in the same charger when the charging sequence is restarted based on a request for restart of the charging sequence from the charger after the charging sequence has been stopped.
  5. The vehicle is equipped with a connection part to which the charging plug of the charger is connected, The control unit, When the charging sequence stops, if a signal indicating a mismatch between the first voltage and the voltage of the connection actually measured is transmitted from the charger to the communication unit, The charging control device according to claim 1, 3, or 4 , which performs control to transmit the second information to the charger through the communication unit.
  6. The charging control device according to claim 5, wherein the control unit performs control to send a notification to the vehicle user's communication terminal prompting them to try charging again when the signal indicating non-compliance is transmitted from the charger to the communication unit .
  7. The charging control device according to any one of claims 1 to 4, wherein the control unit is capable of performing a first charging control for charging the energy storage device by boosting the voltage supplied from the charger, and a second charging control for charging the energy storage device without boosting the voltage supplied from the charger.
  8. A charging control method for a vehicle equipped with a power storage device that is charged by power from a charger, The energy storage device can be charged with power based on a first voltage, or power based on a second voltage different from the first voltage. A first transmission step of transmitting first information to the charger indicating that the charging will be performed using the first voltage, The system further includes a second transmission step, which, after the first transmission step, transmits information regarding the voltage used for charging back to the charger, A charging control method, wherein the second transmission step is a step of transmitting second information to the charger indicating that charging should be performed by the second voltage when the charging sequence is stopped between the time the first information is transmitted to the charger and the charging is started, and the charging sequence is restarted in the same charger that stopped the charging sequence.
  9. A charging control device for a vehicle equipped with a power storage device that is charged by power from a charger, The aforementioned charger and a communication unit capable of communicating with each other, The system comprises a control unit that controls charging by the aforementioned charger, The energy storage device can be charged with power based on a first voltage, or power based on a second voltage different from the first voltage. The control unit, after transmitting first information indicating that charging is performed using the first voltage to the charger via the communication unit, performs control to transmit second information indicating that charging is performed using the second voltage when transmitting information regarding the voltage used for charging to the charger again via the communication unit. A charging control device that, after transmitting the first information to the charger, receives a signal from the charger indicating a mismatch between the first voltage and the voltage information, without receiving voltage information from the charger, and then transmits the second information to the charger via the communication unit.

Description

This disclosure relates to a charging control device and a charging control method. Japanese Patent Publication No. 2019-047677 (Patent Document 1) discloses a charging system in which power is charged to a vehicle from a charging station. Japanese Patent Publication No. 2019-047677 This figure shows the configuration of the vehicle and charger according to the first embodiment.This is a flow chart showing the charging sequence between the vehicle and the charger.This is a sequence diagram showing the charging handshake stage and the charging parameter arrangement stage according to the first embodiment.This figure shows the details of step S401.This figure shows the configuration of the vehicle and charger according to the second embodiment.This is a sequence diagram showing the charging parameter arrangement steps according to the second embodiment.This is a sequence diagram showing the charging parameter arrangement steps according to a modified example of the second embodiment. The embodiments of this disclosure will be described in detail below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and their descriptions will not be repeated. [First Embodiment] The charging system and vehicle according to the first embodiment will be described with reference to Figures 1 to 4. In the configurations shown in Figures 1 to 4, identical or substantially identical components are denoted by the same reference numerals, and redundant explanations are omitted. In the specification and figures, "S" stands for "Step". Figure 1 is a schematic diagram illustrating a charging system 1 according to the first embodiment. The charging system 1 comprises a vehicle 102 and a charger 103. Vehicle 102 comprises a power storage device 110, a charging inlet 113, a boost converter 140, and a control unit 13. The charging inlet 113 includes a DC (+) terminal 150, a DC (-) terminal 151, a PE terminal 152, an S (+) terminal 153, an S (-) terminal 154, a CC1 terminal 155, a CC2 terminal 156, and a housing 157. Each terminal 150-156 is housed within the housing 157, and each terminal is insulated. Note that the charging inlet 113 is an example of a "connection part" in this disclosure. Vehicle 102 includes DC(+) wiring 130, DC(-) wiring 131, PE wire 132, S(+) signal wire 133, S(-) signal wire 134, CC1 communication wire 135, CC2 communication wire 136, contactors K5 and K6, and switches SW2 and SWv. S(+) signal wire 133, S(-) signal wire 134, CC1 communication wire 135, and CC2 communication wire 136 are examples of the "communication unit" in this disclosure. Furthermore, the S(+) signal wire 133, S(-) signal wire 134, CC1 communication wire 135, and CC2 communication wire 136, along with the control unit 13, constitute the charge control device 100. The DC (+) wire 130 and DC (-) wire 131 are connected to the boost converter 140. The DC (+) wire 130 is connected to the DC (+) terminal 150, and the DC (-) wire 131 is connected to the DC (-) terminal 151. The PE wire 132 is the ground wire and is connected to the PE terminal 152. The boost converter 140 is also connected to the energy storage device 110. The boost converter 140 can boost the voltage input from the DC (+) wire 130 and DC (-) wire 131 and output it to the energy storage device 110. The S(+) signal line 133, the S(-) signal line 134, the CC1 communication line 135, and the CC2 communication line 136 are connected to the control unit 13. The S(+) signal line 133 is connected to the S(+) terminal 153. The S(-) signal line 134 is connected to the S(-) terminal 154. The CC1 communication line 135 is connected to the CC1 terminal 155. The CC2 communication line 136 is connected to the CC2 terminal 156. Contactor K5 is located on DC (+) wiring 130. Contactor K6 is located on DC (-) wiring 131. Resistor R4 is connected to CC1 communication line 135. Switch SW2 is connected in series with resistor R4 to CC1 communication line 135. Switch SWv is located on CC2 communication line 136. The control unit 13 controls the ON/OFF switching of contactors K5 and K6 and switches SW2 and SWv. The control unit 13 is equipped with a battery management system (BMS) 138. The vehicle 102 includes a plurality of input units 19. These input units 19 include, for example, an accelerator pedal 20, an ignition switch 21, a brake pedal 22, a hazard switch 23, a door lock button 24A, a door unlock button 24B, and a display unit 25. The charger 103 includes a power output unit 122, a DC (+) wiring 160, a DC (-) wiring 161, a PE wire 162, an S (+) signal wire 163, an S (-) signal wire 164, a CC1 communication wire 165, a CC2 communication wire 166, a contactor K1, a contactor K2, a switch SW1, a voltage measuring device 145, a bleeder circuit 146, an IMD (Insulation Monitoring Device) 147, a charger controller 173, and a stop button 174. The plug (charging connector) 120 includes a DC (+) terminal 180, a DC (-) terminal 181, a PE