JP5278512B2 - vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an onboard equipment control system and vehicle that can facilitate changing a battery capacity. <P>SOLUTION: A power unit of a vehicle, which can be charged from an external power supply 90 prepared in the external of the vehicle, includes: a main battery BA; and a battery pack 39 removable from the vehicle. The battery pack 39 includes a sub-battery BB1 for driving the electric load (inverters 14 and 22) common to the main battery BA; and a connector 52 in which a first memory unit which stores information about the sub-battery BB1 is provided. The power unit of the vehicle further includes a control device 30 which reads information from the first memory unit and performs control about the sub-battery BB1, while performing control about the main battery BA. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to an in-vehicle device control system and a vehicle, and particularly to an in-vehicle device control system and a vehicle for a vehicle that can be charged from the outside.

  2. Description of the Related Art In recent years, vehicles that are equipped with a power supply device and drive a motor with electric power, such as electric vehicles, hybrid vehicles, and fuel cell vehicles, have attracted attention as environmentally friendly vehicles.

  In such a vehicle, it is also considered that the vehicle can be charged from the outside. JP-A-8-154307 (Patent Document 1) discloses a battery that can be charged by an external charging means, a driving motor that can drive a wheel by electric power from the battery, a control means that controls the operation of the motor, A hybrid electric vehicle with an internal combustion engine used directly or indirectly for driving wheels is disclosed.

JP-A-8-154307 JP 2001-57711 A Japanese Patent No. 2530098 JP 2004-262357 A

  In order to extend the distance that can be traveled by the charged electric power, it is necessary to increase the capacity of the power storage device. However, when the capacity of the power storage device is increased, the cost is increased and the vehicle weight is increased, so that the fuel consumption is also deteriorated. Therefore, it is preferable to set the battery capacity according to the usage mode of the purchase user.

  That is, in a hybrid vehicle that can be externally charged, the travel distance per charge of each user is not necessarily the same, and thus there is a desire to change the battery capacity installed for each user to be sold. For example, it is conceivable to select an optimum battery capacity based on the distance between the user's home and the commuting destination.

  However, preparing vehicles with various battery capacities leads to an increase in manufacturing costs and makes manufacturing management difficult. In addition, it is preferable that the battery capacity owned can be changed when the usage environment is changed due to a change of address or transfer.

  The objective of this invention is providing the vehicle equipment control system and vehicle which can change a battery capacity easily.

  In summary, the present invention is an in-vehicle device control system that is configured to be detachable from a vehicle and includes a storage unit that stores information, and a storage unit when the battery pack is connected to the vehicle. And a control device for controlling the in-vehicle device based on information other than the information stored in the storage unit when the vehicle pack is controlled based on the information stored in the storage unit and the battery pack is not connected to the vehicle. Prepare.

  Preferably, the control device controls charging / discharging of the battery pack based on information stored in the storage unit.

  Preferably, the in-vehicle device control system further includes a cooling device that cools the battery pack. The control device controls the cooling device based on the information stored in the storage unit.

  Preferably, the in-vehicle device control system further includes a first battery that supplies electric power to the in-vehicle device. The battery pack further includes a second battery that supplies power to the in-vehicle device. The control device causes the in-vehicle device to perform control related to the first battery and control related to the second battery based on information stored in the storage unit.

  More preferably, the control device performs processing related to the first battery and the second battery based on a predetermined control constant, and changes the control constant based on information read from the storage unit.

  Preferably, the control device determines whether or not the battery pack is a genuine product based on information read from the storage unit.

  Preferably, the battery pack further includes a battery that supplies power to the in-vehicle device and a cooling device that cools the battery.

  In accordance with another aspect, the present invention is an in-vehicle device control system, which includes a battery pack having a connecting portion for detachably connecting to a vehicle, and a shape detecting portion that is provided in the vehicle and detects the shape of the connecting portion. And a control device that controls the in-vehicle device based on the detection result of the shape detection unit.

  Preferably, the control device controls charging / discharging of the battery pack based on the detection result of the shape detection unit.

  Preferably, the in-vehicle device control system further includes a cooling device that cools the battery pack. The control device controls the cooling device based on the detection result of the shape detection unit.

  Preferably, the in-vehicle device control system further includes a first battery that supplies electric power to the in-vehicle device. The battery pack further includes a second battery that supplies power to the in-vehicle device. The control device causes the in-vehicle device to perform control related to the first battery and control related to the second battery based on the detection result of the shape detection unit.

  More preferably, the control device performs processing related to the first battery and the second battery based on a predetermined control constant, and changes the control constant based on the detection result of the shape detection unit.

  Preferably, the battery pack further includes a battery that supplies power to the in-vehicle device and a cooling device that cools the battery.

  According to still another aspect of the present invention, when a battery pack having a connection portion connected to the vehicle is configured to be detachable, and the battery pack is connected to the vehicle, reading from the battery pack is performed. And a control device that controls the in-vehicle device based on the information stored in the vehicle when the in-vehicle device is controlled based on the information that has been stored and the battery pack is not connected to the vehicle.

  Preferably, the control device controls charging / discharging of the battery pack based on information read from the battery pack.

  Preferably, the vehicle further includes a cooling device that cools the battery pack. The control device controls the cooling device based on information read from the battery pack.

  Preferably, the vehicle further includes a first battery that supplies electric power to the in-vehicle device. The battery pack further includes a second battery that supplies power to the in-vehicle device. The control device causes the in-vehicle device to perform control relating to the first battery and control relating to the second battery based on information read from the battery pack.

  More preferably, the control device performs processing related to the first battery and the second battery based on a predetermined control constant, and changes the control constant based on information read from the battery pack.

  Preferably, the control device determines whether or not the battery pack is a genuine product based on information read from the battery pack.

  Preferably, the battery pack further includes a battery that supplies power to the in-vehicle device and a cooling device that cools the battery.

  According to still another aspect of the present invention, a battery pack having a connection portion connected to the vehicle is configured to be detachable, the shape detection portion provided in the vehicle and detecting the shape of the connection portion, and the shape And a control device that controls the in-vehicle device based on the detection result of the detection unit.

  Preferably, the control device controls charging / discharging of the battery pack based on the detection result of the shape detection unit.

  Preferably, the vehicle further includes a cooling device that cools the battery pack. The control device controls the cooling device based on the detection result of the shape detection unit.

  Preferably, the vehicle further includes a first battery that supplies electric power to the in-vehicle device. The battery pack further includes a second battery that supplies power to the in-vehicle device. The control device causes the in-vehicle device to perform control related to the first battery and control related to the second battery based on the detection result of the shape detection unit.

  More preferably, the control device performs processing related to the first battery and the second battery based on a predetermined control constant, and changes the control constant based on the detection result of the shape detection unit.

  Preferably, the battery pack further includes a battery that supplies power to the in-vehicle device and a cooling device that cools the battery.

  ADVANTAGE OF THE INVENTION According to this invention, the battery capacity of the power supply device of a vehicle can be changed easily. In addition, an optimum battery capacity can be determined for each user.

1 is a diagram illustrating a main configuration of a vehicle 1 according to an embodiment of the present invention. It is a circuit diagram which shows the detailed structure of the inverters 14 and 22 of FIG. FIG. 2 is a circuit diagram showing a detailed configuration of boost converters 12A and 12B in FIG. 1. It is a figure which shows the structure of the connector provided between the vehicle used in Embodiment 1, and a battery pack. It is a figure which shows the connector member 102A provided with the switch which discriminate | determines a battery kind. It is the figure which looked at the connector member 102A shown in FIG. 5 from the plug insertion surface direction. It is a figure showing the OFF state of switch 122. FIG. 6 is a diagram illustrating an ON state of a switch 122. It is a figure for demonstrating a battery pack kind. It is the figure which showed the example of capacity | capacitance increase / decrease in case a battery pack is one type. 4 is a flowchart for illustrating control associated with connection of an additional battery pack executed by control device 30. It is a figure for demonstrating switching of the map of an engine starting threshold value as an example of a control constant. FIG. 6 is a diagram showing a connection between a vehicle and a battery pack in a second embodiment. It is the figure which showed the modification of the structure shown in FIG. 6 is a flowchart for illustrating control associated with connection of an additional battery pack executed by control device 30 in the second embodiment. FIG. 10 is a block diagram for illustrating a cooling device in a third embodiment. 10 is a diagram showing a modification of the configuration of the battery pack used in Embodiment 3. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[Overall configuration of vehicle]
FIG. 1 is a diagram showing a main configuration of a vehicle 1 according to an embodiment of the present invention.

  Referring to FIG. 1, vehicle 1 includes a main battery BA that is a power storage device, a boost converter 12A, a smoothing capacitor C1, and a voltage sensor 21A.

  Vehicle 1 further includes a smoothing capacitor CH, voltage sensors 10A, 10B1, 13, inverters 14, 22, engine 4, motor generators MG1, MG2, power split mechanism 3, wheels 2, and a control device. 30.

  Vehicle 1 further includes a connector 52 and a battery pack 39 detachably connected to vehicle 1 by connector 52. By mounting or removing the battery pack 39 on the vehicle 1, the total battery capacity mounted on the vehicle 1 can be adjusted.

  Battery pack 39 includes sub-battery BB1, boost converter 12B, smoothing capacitor C2, and voltage sensors 10B1 and 21B.

  The power storage device mounted on the vehicle can be charged from the outside. For this purpose, vehicle 1 further includes power input lines ACL <b> 1 and ACL <b> 2, relay circuit 51, input terminal 50, and voltage sensor 74.

  Relay circuit 51 includes relays RY1 and RY2. As relays RY1 and RY2, for example, mechanical contact relays can be used, but semiconductor relays may also be used. Then, one end of power input line ACL1 is connected to one end of relay RY1, and the other end of power input line ACL1 is connected to neutral point N1 of three-phase coil of motor generator MG1. Further, one end of power input line ACL2 is connected to one end of relay RY2, and the other end of power input line ACL2 is connected to neutral point N2 of the three-phase coil of motor generator MG2. Further, the input terminal 50 is connected to the other end of the relays RY1, RY2.

  Relay circuit 51 electrically connects input terminal 50 to power input lines ACL1 and ACL2 when input permission signal EN from control device 30 is activated. Specifically, relay circuit 51 turns on relays RY1, RY2 when input permission signal EN is activated, and turns off relays RY1, RY2 when input permission signal EN is deactivated.

  The input terminal 50 is a terminal for connecting a commercial external power supply 90 to the hybrid vehicle 1. In this hybrid vehicle 1, the battery BA or BB 1 can be charged from the external power supply 90 connected to the input terminal 50.

  The above configuration uses the neutral point of the stator coil of the two rotating electrical machines. Instead of such a configuration, for example, in order to connect to a commercial power supply of AC 100V, An installed battery charging device may be used, and when the optional battery pack 39 is installed, a method in which the boost converters 12A and 12B are combined to function as an AC / DC converter may be used.

  Smoothing capacitor C1 is connected between power supply line PL1A and ground line SL2. The voltage sensor 21 </ b> A detects the voltage VLA across the smoothing capacitor C <b> 1 and outputs it to the control device 30. Boost converter 12A boosts the voltage across terminals of smoothing capacitor C1.

  Smoothing capacitor C2 is connected between power supply line PL1B and ground line SL2. The voltage sensor 21B detects the voltage VLB across the smoothing capacitor C2 and outputs it to the control device 30. Boost converter 12B boosts the voltage across terminals of smoothing capacitor C2.

  Smoothing capacitor CH smoothes the voltage boosted by boost converters 12A and 12B. The voltage sensor 13 detects the inter-terminal voltage VH of the smoothing capacitor CH and outputs it to the control device 30.

  Inverter 14 converts the DC voltage applied from boost converter 12B or 12A into a three-phase AC voltage and outputs the same to motor generator MG1. Inverter 22 converts the DC voltage applied from boost converter 12B or 12A into a three-phase AC voltage and outputs the same to motor generator MG2.

  Power split device 3 is a mechanism that is coupled to engine 4 and motor generators MG1 and MG2 and distributes power between them. For example, as the power split mechanism, a planetary gear mechanism having three rotating shafts of a sun gear, a planetary carrier, and a ring gear can be used. In the planetary gear mechanism, if rotation of two of the three rotation shafts is determined, rotation of the other one rotation shaft is forcibly determined. These three rotation shafts are connected to the rotation shafts of engine 4 and motor generators MG1, MG2, respectively. The rotating shaft of motor generator MG2 is coupled to wheel 2 by a reduction gear and a differential gear (not shown). Further, a reduction gear for the rotation shaft of motor generator MG2 may be further incorporated in power split mechanism 3, or an automatic transmission may be incorporated.

  In relation to main battery BA, vehicle 1 further includes a connection portion 40A provided on the positive electrode side and a system main relay SMRG that is a connection portion provided on the negative electrode side. Connection unit 40A includes a system main relay SMRB connected between the positive electrode of main battery BA and power supply line PL1A, a system main relay SMRP connected in series with system main relay SMRB, and limiting resistor R0. including. System main relay SMRG is connected between a negative electrode (ground line SL1) of main battery BA and ground line SL2.

  System main relays SMRP, SMRB, and SMRG are controlled to be in a conductive / non-conductive state in response to control signals CONT1 to CONT3 supplied from control device 30, respectively.

  Voltage sensor 10A measures voltage VA between terminals of main battery BA. Although not shown, in order to monitor the charging state of the main battery BA together with the voltage sensor 10A, a current sensor for detecting the current flowing through the main battery BA is provided. As the main battery BA, for example, a secondary battery such as a lead storage battery, a nickel metal hydride battery, or a lithium ion battery, or a large capacity capacitor such as an electric double layer capacitor can be used.

  Battery pack 39 includes a connecting portion 40B provided on the positive electrode side and a system main relay SR1G which is a connecting portion provided on the negative electrode side. Connection unit 40B includes a system main relay SR1B connected between the positive electrode of sub battery BB1 and power supply line PL1B, a system main relay SR1P connected in series with system main relay SR1B, and a limiting resistor R1. including. System main relay SR1G is connected between the negative electrode of sub battery BB1 and ground line SL2.

  System main relays SR1P, SR1B, and SR1G are controlled to be in a conductive / non-conductive state according to control signals CONT4 to CONT6 provided from control device 30, respectively.

  As will be described later, ground line SL2 extends through boost converters 12A and 12B to inverters 14 and 22 side.

  Voltage sensor 10B1 measures voltage VBB1 between terminals of sub battery BB1. Although not shown, in order to monitor the charging state of the sub battery BB1 together with the voltage sensor 10B1, as the sub battery BB1 provided with a current sensor for detecting a current flowing through each battery, for example, a lead storage battery, a nickel metal hydride battery, A secondary battery such as a lithium ion battery or a large capacity capacitor such as an electric double layer capacitor can be used.

  The sub-battery BB1 is an optional battery that is increased or decreased according to the usage status of the user. On the other hand, the main battery BA is a base battery that is mounted in the vehicle as a minimum.

  Inverter 14 is connected to power supply line PL2 and ground line SL2. Inverter 14 receives the boosted voltage from boost converters 12A and 12B, and drives motor generator MG1 to start engine 4, for example. Inverter 14 returns the electric power generated by motor generator MG1 by the power transmitted from engine 4 to boost converters 12A and 12B. At this time, boost converters 12A and 12B are controlled by control device 30 so as to operate as a step-down circuit.

  Current sensor 24 detects the current flowing through motor generator MG1 as motor current value MCRT1, and outputs motor current value MCRT1 to control device 30.

  Inverter 22 is connected to power supply line PL2 and ground line SL2 in parallel with inverter 14. Inverter 22 converts the DC voltage output from boost converters 12 </ b> A and 12 </ b> B into a three-phase AC voltage and outputs the same to motor generator MG <b> 2 driving wheel 2. Inverter 22 returns the electric power generated in motor generator MG2 to boost converters 12A and 12B in accordance with regenerative braking. At this time, boost converters 12A and 12B are controlled by control device 30 so as to operate as a step-down circuit.

  Current sensor 25 detects the current flowing through motor generator MG2 as motor current value MCRT2, and outputs motor current value MCRT2 to control device 30.

  Control device 30 receives torque command values and rotational speeds of motor generators MG1, MG2, voltages VBA, VBB1, VBB2, VLA, VLB, VH, motor current values MCRT1, MCRT2, and start signal IGON. Control device 30 outputs a control signal PWUB for instructing boosting to boost converter 12B, a control signal PWDB for instructing step-down, and a shutdown signal for instructing prohibition of operation.

  Further, control device 30 provides control signal PWMI1 for instructing inverter 14 to convert a DC voltage, which is the output of boost converters 12A and 12B, into an AC voltage for driving motor generator MG1, and motor generator MG1. And outputs a control signal PWMC1 for instructing regeneration to convert the AC voltage generated in step S1 to a DC voltage and return it to the boost converters 12A and 12B.

  Similarly, control device 30 converts control signal PWMI2 for instructing inverter 22 to drive to convert DC voltage into AC voltage for driving motor generator MG2, and AC voltage generated by motor generator MG2 to DC voltage. A control signal PWMC2 for instructing regeneration to be converted and returned to the boost converters 12A and 12B is output.

  Control device 30 includes a memory 32 for holding various maps and the like for controlling inverters 14 and 22 and boost converters 12A and 12B.

FIG. 2 is a circuit diagram showing a detailed configuration of inverters 14 and 22 in FIG.
Referring to FIGS. 1 and 2, inverter 14 includes a U-phase arm 15, a V-phase arm 16, and a W-phase arm 17. U-phase arm 15, V-phase arm 16, and W-phase arm 17 are connected in parallel between power supply line PL2 and ground line SL2.

  U-phase arm 15 includes IGBT elements Q3 and Q4 connected in series between power supply line PL2 and ground line SL2, and diodes D3 and D4 connected in parallel with IGBT elements Q3 and Q4, respectively. The cathode of diode D3 is connected to the collector of IGBT element Q3, and the anode of diode D3 is connected to the emitter of IGBT element Q3. The cathode of diode D4 is connected to the collector of IGBT element Q4, and the anode of diode D4 is connected to the emitter of IGBT element Q4.

  V-phase arm 16 includes IGBT elements Q5 and Q6 connected in series between power supply line PL2 and ground line SL2, and diodes D5 and D6 connected in parallel with IGBT elements Q5 and Q6, respectively. The cathode of diode D5 is connected to the collector of IGBT element Q5, and the anode of diode D5 is connected to the emitter of IGBT element Q5. The cathode of diode D6 is connected to the collector of IGBT element Q6, and the anode of diode D6 is connected to the emitter of IGBT element Q6.

  W-phase arm 17 includes IGBT elements Q7 and Q8 connected in series between power supply line PL2 and ground line SL2, and diodes D7 and D8 connected in parallel with IGBT elements Q7 and Q8, respectively. The cathode of diode D7 is connected to the collector of IGBT element Q7, and the anode of diode D7 is connected to the emitter of IGBT element Q7. The cathode of diode D8 is connected to the collector of IGBT element Q8, and the anode of diode D8 is connected to the emitter of IGBT element Q8.

  An intermediate point of each phase arm is connected to each phase end of each phase coil of motor generator MG1. That is, motor generator MG1 is a three-phase permanent magnet synchronous motor, and one end of each of three coils of U, V, and W phases is connected to the midpoint. The other end of the U-phase coil is connected to a line UL drawn from the connection node of IGBT elements Q3 and Q4. The other end of the V-phase coil is connected to a line VL drawn from the connection node of IGBT elements Q5 and Q6. The other end of the W-phase coil is connected to a line WL drawn from the connection node of IGBT elements Q7 and Q8.

  1 also differs in that it is connected to motor generator MG2, but the internal circuit configuration is the same as that of inverter 14, and therefore detailed description thereof will not be repeated. FIG. 2 shows that the control signals PWMI and PWMC are given to the inverter, but this is for avoiding complicated description. As shown in FIG. 1, separate control signals PWMI1 are used. , PWMC1 and control signals PWMI2 and PWMC2 are input to inverters 14 and 22, respectively.

FIG. 3 is a circuit diagram showing a detailed configuration of boost converters 12A and 12B in FIG.
1 and 3, boost converter 12A includes a reactor L1 having one end connected to power supply line PL1A, and IGBT elements Q1, Q2 connected in series between power supply line PL2 and ground line SL2. And diodes D1, D2 connected in parallel to IGBT elements Q1, Q2, respectively.

  Reactor L1 has the other end connected to the emitter of IGBT element Q1 and the collector of IGBT element Q2. The cathode of diode D1 is connected to the collector of IGBT element Q1, and the anode of diode D1 is connected to the emitter of IGBT element Q1. The cathode of diode D2 is connected to the collector of IGBT element Q2, and the anode of diode D2 is connected to the emitter of IGBT element Q2.

  The boost converter 12B in FIG. 1 is different from the boost converter 12A in that it is connected to the power supply line PL1B instead of the power supply line PL1A. Does not repeat. FIG. 3 shows that the control signals PWU and PWD are given to the boost converter, but this is for the purpose of avoiding complicated description. As shown in FIG. PWUA and PWDA and control signals PWUB and PWDB are input to inverters 14 and 22, respectively.

[Power supply that can be equipped with sub-battery]
Referring to FIG. 1 again, the vehicle power supply device according to the embodiment of the present invention is a vehicle power supply device that can be charged from an external power supply 90 provided outside the vehicle 1, and is attached to and detached from the main battery BA. A possible battery pack 39. The battery pack 39 includes a sub battery BB1 for driving an electric load (inverters 14 and 22) common to the main battery BA, and a connector 52 provided with a protrusion (pin) having a shape corresponding to information related to the sub battery BB1. Including. The power supply device for the vehicle further includes a control device 30 that controls the main battery BA and detects information from the shape of the connector to control the sub battery BB1.

  The information detected from the shape of the connector includes, for example, the capacity of the sub battery BB1, and when the capacity of the sub battery is changed, the control device 30 can perform appropriate control according to the capacity. In addition, about a main battery and a subbattery, the main battery is not necessarily large in the storage capacity. A secondary battery having a capacity larger than that of the main battery may be connected. In addition, the secondary battery may be preferentially used over the main battery.

  Preferably, the vehicle power supply device further includes a connector 52 for connecting battery pack 39. Battery pack 39 further includes a boost converter 12B that is a voltage conversion circuit that converts the power supply voltage of sub battery BB1 based on a control signal supplied from control device 30 via a connector.

  Thus, by incorporating boost converter 12B in battery pack 39, even when the voltage of main battery BA and the voltage of sub battery BB1 are different, it is possible to perform charge / discharge control independently for each battery. Become.

  As a method of adjusting the voltage, the voltage of the sub battery BB1 may be adjusted to the main battery BA by the boost converter 12B, and conversely, the voltage of the main battery BA may be adjusted to the sub battery BB1 by the boost converter 12A.

  Further, step-up converter 12A may be eliminated, and the voltage of sub battery BB1 may be adjusted to main battery BA by step-up converter 12B. In this case, the number of cells and charge / discharge management may be performed so that the power supply voltage of sub battery BB1 is lower than the power supply voltage of main battery BA. Conversely, the boost converter 12B may be eliminated, and the voltage of the main battery BA may be adjusted to the sub battery BB1 by the boost converter 12A. In this case, the number of cells and charge / discharge management may be performed so that the power supply voltage of main battery BA is lower than the power supply voltage of sub battery BB1.

  Preferably, the power supply device for the vehicle further includes a charging device for charging main battery BA and sub-battery BB1 with external power supply 90. This charging device includes inverters 14 and 22 and stator coils of motor generators MG1 and MG2.

[Embodiment 1]
FIG. 4 is a diagram showing a structure of a connector provided between the vehicle and the battery pack used in the first embodiment.

  Referring to FIG. 4, connector 52 is a combination of connector member 102 connected to the vehicle side (inverter side) and connector member 112 connected to the battery pack side.

  The connector member 112 includes power cables 116 and 120 connected to the battery, plug pieces 114 and 118 connected to the power cables 116 and 120, respectively, and an insulating cover. The plug piece 114 is a plus terminal, and the plug piece 118 is a minus terminal.

  Connector member 102 includes power cables 106 and 110 connected to an inverter of the vehicle, insertion fittings 104 and 108 connected to power cables 106 and 110, respectively, and an insulating cover. A plug piece 114 is inserted into the insertion fitting 104, and a plug piece 118 is inserted into the insertion fitting 108. Since it is covered with an insulating cover, the plug piece is difficult to touch the operator.

  FIG. 5 is a diagram showing a connector member 102A provided with a switch for determining the battery type.

FIG. 6 is a view of the connector member 102A shown in FIG. 5 as viewed from the plug insertion surface direction.
Referring to FIGS. 5 and 6, a connector member 102 </ b> A provided with a battery type determination switch 122 is shown as an example of the connector member 102. For example, the switch 122 is provided in each of the three pin insertion openings 122A, 122B, and 122C. The connector member connected to the battery side is provided with a pin at a position corresponding to the battery type. If there is a pin, the switch 122 is pushed by the pin and set to the ON state. When there is no pin, the switch 122 is set to the OFF state.

FIG. 7 is a diagram illustrating the OFF state of the switch 122.
FIG. 8 is a diagram illustrating the ON state of the switch 122.

  Referring to FIGS. 7 and 8, switch 122 includes a resistor 126 and a movable piece 128 for coupling a wiring for sending a signal to a control device such as an ECU to a positive voltage of 5V to 14V. When the pin is not inserted into the pin insertion ports 122A, 122B, 122C, the segment 128 is separated, so that a voltage of H (logic high) level is applied to a control device such as an ECU. When the pin is inserted into any of the pin insertion ports 122A, 122B, and 122C, the intercept 128 of the switch 122 inside the inserted insertion port is closed and an L (logic low) level signal is transmitted to the control device. .

  When there are three insertion openings, two cubes, that is, eight states can be shown. Therefore, by representing the capacity of the battery pack currently connected by the position of this pin, this can be determined by the control device on the vehicle side.

FIG. 9 is a diagram for explaining battery pack types.
Referring to FIG. 9, a battery pack having a large capacity and a small capacity is prepared as an option. It is necessary to select and connect either the large capacity battery pack 130 or the small capacity battery pack 132 to the connector 52. Or you may select not connecting a battery pack at all. The positions where the pins are provided are different between the battery pack 130 and the battery pack 132. If the relationship between the position and the capacity is decided in advance, the pin position can be recognized by the control device on the vehicle side by observing ON / OFF of the switch 122, and the capacity of the battery pack can be known.

  In the first embodiment, the shape provided on the battery pack side member of the connector for connecting the battery pack represents information such as the battery pack capacity. The vehicle-side member 102A of the connector is provided with a detection switch 122 that is a detection unit for detecting its shape.

FIG. 10 is a diagram showing an example of capacity increase / decrease when there is one type of battery pack.
Referring to FIG. 10, a plurality of connectors 52-1 to 52-n connected to the inverter are provided on the vehicle side. In a dealer or a service factory, a necessary number of additional battery packs 142-1, 142-2, ... are connected to the connector.

  The control device on the vehicle side can detect the number of battery packs connected by the connection detection switch 122 provided in each connector, and can know the total battery capacity.

  FIG. 11 is a flowchart for illustrating control associated with connection of an additional battery pack executed by control device 30. The process of this flowchart is called and executed from the main routine when the vehicle system is activated, for example.

  Referring to FIG. 11, when the process is first started, control device 30 determines whether or not an additional battery pack is connected in step S <b> 1. When the detection switch 122 of the connector 52 is in the ON state, it is determined that there is a connection. If both switches 122 are OFF, it is determined that there is no connection.

  If it is determined in step S1 that there is no additional battery, the process proceeds to step S4, and control is transferred to the main routine without any particular change in control. In this case, the standard map of the plurality of maps held in the memory 32 of FIG. 1 is applied as it is. On the other hand, if it is determined that there is an additional battery, the process proceeds to step S2.

  In step S2, the battery capacity is detected. In the method of changing the capacity of the battery pack as described with reference to FIG. 9, the capacity can be detected by confirming which of the pin insertion openings 122A to 122C in FIG. In the method of changing the number of battery packs as described with reference to FIG. 10, the number of connected battery packs can be determined by the number of ON switches of the switches 122 provided in each of the connectors 52-1 to 52-n. Therefore, the battery capacity can be detected by multiplying the number by the battery capacity of the additional unit.

  When the process of step S2 ends, the process of step S3 is executed next. In step S3, the control constant used for control of the hybrid system by the control device 30 is changed. The control constant is changed, for example, by switching a plurality of maps in the memory 32 of FIG. 1 according to the battery capacity. The map is an engine start map that defines a threshold value for starting the engine with respect to the output power request value, or a map that defines the maximum power Wout that can be output from the battery and the maximum power Win that can be charged to the battery. Or a boost control map of the boost converter, or a control map of the battery cooling device.

  FIG. 12 is a diagram for explaining the switching of the engine start threshold map as an example of the control constant.

  Referring to FIG. 12, map A is a map when the battery capacity is increased, and map B is a standard map used when the battery capacity is not increased. When the battery capacity is large, the power that can be supplied from the battery to the motor also increases. Therefore, even if the accelerator pedal is depressed and the required output power value is increased, if there is an additional battery, the requested power can be output to the axles only by the motor without starting the engine.

  More specifically, when the battery state of charge (SOC) is 0 to 40%, if the battery is not added, as shown in Map B, the engine starts when there is a 5 kW output power request. To do. On the other hand, if the battery is added, as shown in Map A, the engine starts when there is a 10 kW output power request.

  Further, while the battery state of charge SOC is 60%, as shown in Map B, if the battery is not added, the engine starts when there is a request for 10 kW of output power. On the other hand, if a battery is added, as shown in Map A, the engine starts when there is a 20 kW output power request.

  When the battery state of charge SOC is 80%, as shown in Map B, if the battery is not added, the engine starts when there is a request for 15 kW output power. On the other hand, if the battery is added, as shown in Map A, the engine starts when there is a 30 kW output power request.

  In addition, while the battery state of charge SOC is 100%, as shown in Map B, if the battery is not added, the engine starts when there is a 20 kW output power request. On the other hand, if the battery is added, as shown in Map A, the engine starts when there is a 40 kW output power request. In other words, if the battery is added and the state of charge SOC is 100%, it is possible to run with only the motor with the engine stopped until the required output power value reaches 40 kW.

  As described above, since the power that can be output increases as the battery capacity increases, the area in which the engine does not have to be started widens.

  Further, since the SOC for starting the engine is also changed, the distance that can be traveled while the engine is stopped can be appropriately extended as the battery pack increases. The hybrid vehicle starts the engine by rotating the motor generator MG1 with the power of the battery. However, even when the number of battery packs is reduced, the SOC that starts the engine and starts charging is also changed. Therefore, it is possible to prevent the engine from starting up due to excessive discharge.

  The map shown in FIG. 12 is simply modeled and shown, and is actually adapted by a vehicle running experiment. In addition, for Win and Wout, maps defined for temperature and SOC are switched according to the battery capacity.

  That is, preferably, control device 30 performs processing related to main battery BA and sub battery BB1 based on a predetermined control constant. And the control apparatus 30 changes a predetermined control constant based on the information read from the pin position of the connector corresponded to the memory | storage part which memorize | stores information.

  In the first embodiment, the control device 30 on the vehicle side automatically reads the information of the battery pack and changes the control constant according to the information. However, the control device 30 may not always execute automatically. Conceivable. For example, the control device 30 is provided with a write terminal so that the control constant can be rewritten, and when the battery pack is added, removed, or replaced, the control constant on the memory 32 of the control device 30 is rewritten from the write terminal. Anyway.

  As described above, in the first embodiment, the control of the in-vehicle device is executed under the control conditions suitable for the attached battery pack. For example, by appropriately controlling an inverter and a boost converter that are in-vehicle devices, the total battery of the base battery and the optional battery can be charged and discharged satisfactorily.

[Embodiment 2]
FIG. 13 is a diagram showing a connection between the vehicle and the battery pack in the second embodiment.

  Referring to FIG. 13, vehicle 150 </ b> A and battery pack 39 </ b> A are connected by a connector 52. In addition to the connection portions of the power cables 106 and 110 as shown in FIG. 4, the connector 52 is provided with a connection portion of a communication line for performing control communication such as CAN (Controller Area Network) communication. . The communication line connector does not necessarily have to be integrated with the power cable, and may be a separate connector.

  The battery pack 39A includes a sub battery BB1, a boost converter 12B that boosts the voltage of the sub battery BB1, a battery pack control unit 156 that controls the boost converter 12B, a memory 158 connected to the battery pack control unit 156, and Communication interface 154. Boost converter 12B is connected to power line PL2 and ground line SL2 on the vehicle side via connector 52.

  Vehicle 150A further includes a communication interface 152 for communicating with battery pack 39A in addition to the configuration of vehicle 1 as shown in FIG.

  The memory 158 stores information related to the battery pack 39A. This information includes, for example, the capacity of sub battery BB1. The memory 158 may store the type of battery (lithium ion battery, nickel metal hydride battery, etc.), date of manufacture, manufacturer, and the like.

  The battery pack control unit 156 reads information on the capacity of the battery pack 39A from the memory 158 and transmits the information to the control device 30 via the communication interfaces 154 and 152. Then, control device 30 switches control constants, various maps, and the like for driving the vehicle in consideration of the capacity of battery pack 39A. The map may be switched by holding a plurality of maps in the control device 30 and selecting a suitable one from them, or holding the map data in the memory 158 and transferring the data to the control device 30. The rewriting process to be reflected in the map stored in (1) may be performed.

FIG. 14 is a diagram showing a modification of the configuration shown in FIG.
In FIG. 13, the power cable and the communication line are provided separately. However, in FIG. 14, a PLC (Power Line Communications) interface that superimposes communication information on the power cable is employed. Become.

  The battery pack 39B includes a sub battery BB1, a boost converter 12B that boosts the voltage of the sub battery BB1, a battery pack control unit 166 that controls the boost converter 12B, a memory 168 connected to the battery pack control unit 166, and PLC communication interface 164. Boost converter 12B is connected to power line PL2 and ground line SL2 on the vehicle side via connector 52.

  Vehicle 150B further includes a PLC communication interface 162 for communicating with battery pack 39B in addition to the configuration of vehicle 1 as shown in FIG.

  The memory 168 stores information related to the battery pack 39B. This information includes, for example, the capacity of sub battery BB1.

  The battery pack control unit 166 reads information on the capacity of the battery pack 39B from the memory 168, and transmits the information to the control device 30 via the PLC communication interfaces 164 and 162 and the power cable. Then, control device 30 switches control constants, various maps, and the like for driving the vehicle in consideration of the capacity of battery pack 39B.

  FIG. 15 is a flowchart for illustrating control associated with connection of an additional battery pack executed by control device 30 in the second embodiment. The process of this flowchart is called and executed from the main routine when the vehicle system is activated, for example.

  Referring to FIG. 15, when the process is started, control device 30 determines whether or not an additional battery pack is connected in step S11. When the detection switch 122 of the connector 52 is in the ON state, it is determined that there is a connection. If the switch 122 is in the OFF state, it is determined that there is no connection.

  If it is determined in step S11 that there is no additional battery, the process proceeds to step S15, and control is transferred to the main routine without particularly changing the control. If it is determined that there is an additional battery, the process proceeds to step S12.

  In step S12, it is determined whether or not communication with the additional battery pack is possible. If this communication is possible, information such as the capacity of the sub-battery is read from the memory in the battery pack by communication.

  If communication is possible in step S12, the process proceeds to step S13. In step S13, the control constant used for control of the hybrid system by the control device 30 is changed. The change of the control constant is, for example, an engine start map that defines a threshold value for starting the engine with respect to the output power request value, or the maximum power Wout that can be output from the battery or the maximum power Win that can be charged to the battery. Can be performed by switching a map or the like that regulates according to the battery capacity.

  On the other hand, if communication is not established in step S12, the process proceeds to step S14. As a case where communication is not established, for example, a case where a non-standard battery pack (for example, a non-genuine product or an unknown one that satisfies the standard) that is not scheduled to be connected is considered. In that case, since it is unclear how it is appropriate to change the control constant, a failure determination is made to prevent abnormal discharge and the operation of the vehicle is prohibited.

  That is, preferably, control device 30 determines whether or not battery pack 39A or 39B is a genuine product based on information read from memory 158 or 168 as a storage unit.

  And when the battery pack which is not a regular article is mounted, operation of vehicles is prohibited, for example. Thereby, malfunctions, such as abnormal charging / discharging, can be avoided. Alternatively, the vehicle may be operated using only the genuine battery pack by electrically disconnecting the non-genuine battery pack. By doing so, the operation of the vehicle can be ensured when the user connects the battery pack to the purchased vehicle without recognizing that the battery pack is not genuine.

  Compared to the case where only the connector shape is used, unauthorized modification becomes difficult. In other words, the connector can be easily duplicated, but it is difficult to duplicate the entire contents of the memory, so that it is possible to prevent malfunction due to mounting of a battery pack that is not a genuine product.

  When the process of step S13 or S14 ends, control is transferred to the main routine in step S15.

  As described above, in the second embodiment, as in the first embodiment, the control of the in-vehicle device is executed under the control conditions suitable for the attached battery pack.

[Embodiment 3]
The battery generates heat when the current is charged and discharged. In summer and the like, it may be possible that the battery is hot when a long time notification is given under the hot sun. In order not to shorten the battery life, it is desirable to cool the battery before use.

  However, when the amount of battery mounted is changed, the amount of heat generated from the battery also changes. Therefore, it is necessary to change the cooling capacity in accordance with the amount of battery mounted.

FIG. 16 is a block diagram for explaining the cooling device in the third embodiment.
The configuration shown in FIG. 16 is obtained by adding a cooling device 200 to the configuration shown in FIG. Since the other configuration of cooling device 200 has been described with reference to FIG. 13, description thereof will not be repeated.

  Cooling device 200 is provided on the vehicle side to cool battery pack 39A. The cooling device 200 may be one that cools the battery BA, which is a base battery, in addition to the battery pack 39A.

  If the cooling device 200 is provided exclusively for the battery pack 39A, the vehicle control device 30 operates the cooling device 200 when detecting that the battery pack 39A is attached by communication with the battery pack control unit 156. Set as possible. When the temperature of battery BB1 is detected by a temperature sensor (not shown) or the like, control device 30 starts cooling battery pack 39A by rotating a fan or circulating cooling water to cooling device 200.

  If the cooling device 200 is provided in common for the base battery and the battery pack 39A, the vehicle control device 30 detects that the battery pack 39A is attached by communication with the battery pack control unit 156. The cooling capacity of the cooling device 200 is increased. The control device 30 increases the rotational speed of the fan or increases the circulation amount of the cooling water when the battery pack 39A is attached than when the battery pack 39A is not attached.

  Here, as shown in FIG. 16, when the battery cooling device and the ECU that controls the battery cooling device are separate from the battery pack, the cooling performance of the battery changes and the vehicle performance such as the distance that can be traveled only by the battery decreases. It is also possible.

FIG. 17 is a diagram illustrating a modification of the configuration of the battery pack used in the third embodiment.
Referring to FIG. 17, a plurality of battery packs 202-1 to 202-n are connected to power supply line PL2 and ground line SL2 through system main relay SMR. The system main relay SMR is controlled to be conductive / non-conductive by a control device on the vehicle side.

  Battery pack 202-1 includes a connector 52, a boost converter 12B, a sub battery BB1, a temperature sensor 204, a fan control unit 206, and a blower fan 208.

  The temperature sensor 204 measures the temperature of the sub battery BB1. When the battery temperature detected by temperature sensor 204 is higher than a predetermined value, fan control unit 206 rotates fan 208 to adjust the temperature so that the battery temperature does not rise excessively. That is, the temperature sensor 204, the fan control unit 206, and the fan 208 correspond to a temperature adjustment device included in the battery pack 202-1.

  Since other battery packs 202-n have the same configuration as battery pack 202-1, the description thereof will not be repeated.

  In the third embodiment, since the temperature control device including a fan or the like is provided for each battery pack, even if the number or shape of the battery pack is changed, the sub battery built in the battery pack is not required to pay special consideration. Can be maintained at an appropriate temperature. In other words, the cooling device and its control part have a battery pack integrated structure, and cooling control (from temperature measurement to fan control) is completed within the battery pack, resulting in reduced battery cooling performance when the battery pack is added. Thus, it is possible to prevent the running performance from being deteriorated.

  Finally, the in-vehicle device control system disclosed in the present embodiment will be generally described. Referring to FIGS. 1, 13, and 14, the in-vehicle device control system is configured to be detachable from the vehicle and includes battery packs 39 </ b> A and 39 </ b> B including storage units (memory 158 and 168) that store information, and the vehicle. When the battery pack is connected, the vehicle-mounted device is controlled based on the information stored in the storage unit, and when the battery pack is not connected to the vehicle, the information other than the information stored in the storage unit And a control device 30 that controls the in-vehicle device based on the information.

  As shown in FIG. 16, preferably, the in-vehicle device control system further includes a cooling device 200 that cools the battery pack 39A. The control device 30 controls the cooling device 200 based on the information stored in the storage unit (memory 158).

  As shown in FIGS. 1 and 13, the in-vehicle device control system preferably further includes a first battery BA that supplies electric power to the in-vehicle device. The battery pack 39 further includes a second battery BB1 that supplies power to the in-vehicle device. The control device 30 performs control related to the first battery BA and control related to the second battery BB1, based on information stored in the storage unit (memory 158), inverters 14 and 22, boost converter 12A, Let 12B do it.

  Preferably, the control related to the first and second batteries includes charge / discharge control, and control device 30 controls charge / discharge of the battery pack based on information stored in the storage unit.

  As shown in FIGS. 1 and 5, an in-vehicle device control system according to another aspect of the present invention is provided in a vehicle with a battery pack 39 having a connection portion (connector 52) for detachably connecting to the vehicle. A shape detection unit (switch 122) that detects the shape of the connection unit and a control device 30 that controls the in-vehicle device based on the detection result of the shape detection unit.

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

  1 hybrid vehicle, 2 wheels, 3 power split mechanism, 4 engine, 10A, 10B1, 13, 21A, 21B, 74 voltage sensor, 12A, 12B boost converter, 14, 22 inverter, 15 U phase arm, 16 V phase arm, 17 W-phase arm, 24, 25 Current sensor, 30 Control device, 39, 39A, 39B, 130, 132, 142, 202 Battery pack, 40A, 40B Connection part, 50 input terminal, 51 Relay circuit, 52 connector, 90 External Power supply, 102, 102A, 112 connector member, 104, 108 insertion bracket, 106, 110, 116, 120 power cable, 114, 118 plug piece, 122 switch, 122A, 122B, 122C pin insertion port, 126 resistance, 128 section, 150A, 150B vehicle 152,154 Communication interface, 156,166 Battery pack controller, 32,158,168 Memory, 162,164 PLC communication interface, 204 Temperature sensor, 206 Fan controller, 208 Fan, ACL1, ACL2 Power input line, BA main battery , BB1 secondary battery, C1, C2, CH smoothing capacitor, D1 to D8 diode, L1 reactor, MG1, MG2 motor generator, N1, N2 neutral point, PL1A, PL1B, PL2 power line, Q1 to Q8 IGBT element, R0 , R1 limiting resistor, RY1, RY2 relay, SL1, SL2 ground line, SMR, SMRP, SMRB, SMRG, SR1P, SR1B, SR1G System main relay.

Claims (2)

A vehicle,
A driving device for driving the vehicle with electric power;
A control device for controlling the driving device;
A first battery for supplying power to the drive device;
A battery pack configured to be detachable from the vehicle,
The battery pack is
A second battery used in addition to the first battery to supply power to the drive device;
A communication device for communicating with the control device,
The control device operates the driving device using the first battery and the second battery when communication with the communication device is established when the battery pack is connected to a vehicle. When the battery pack is connected to a vehicle and communication with the communication device is not established, the second battery is not used and the drive device is used using the first battery. The vehicle to be operated. A vehicle,
A driving device for driving the vehicle with electric power;
A control device for controlling the driving device;
A first battery for supplying power to the drive device;
A battery pack configured to be detachable from the vehicle,
The battery pack is
A second battery used in addition to the first battery to supply power to the drive device;
A communication device for communicating with the control device,
The control device permits driving of the vehicle by the driving device when communication with the communication device is established when the battery pack is connected to the vehicle, and the battery pack is connected to the vehicle. The vehicle prohibits driving of the vehicle by the drive device when communication with the communication device is not established.

Images