JP6866490B2 - Power control device and control method of power control device - Google Patents

Description

The present invention relates to a power control device and a control method of a control method of the power control device.

Conventionally, electric motorcycles powered by a motor have been known. In conventional electric motorcycles, one battery is used as a power source.

Here, when a plurality of (for example, two) mobile batteries are applied to the electric motorcycle, it is assumed that the plurality of batteries are connected in parallel or in series (see, for example, Patent Documents 1 and 2).

As described above, when activating a plurality of batteries, expandability for recognizing (connecting determination) these batteries is required, and it is required to deal with them at a relatively low cost.

Japanese Unexamined Patent Publication No. 2014-155377 JP-A-2015-133766

Therefore, an object of the present invention is to provide a power control device capable of reducing costs while improving expandability for recognizing batteries when a plurality of batteries are started.

The power control device according to the embodiment according to one aspect of the present invention is
The reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied,
With the reference charging terminal to which the charger can be connected,
A first positive battery terminal to which the positive electrode of the first battery can be connected, and a first negative battery terminal to which the negative electrode of the first battery can be connected.
A second positive battery terminal to which the positive electrode of the second battery can be connected, and a second negative battery terminal to which the negative electrode of the second battery can be connected.
A switch circuit having one end connected to the reference battery terminal and the other end connected to the reference charging terminal, the first battery power supply terminal, and the drive control unit power supply terminal.
The first battery connected to the first positive battery terminal and the first negative battery terminal communicates with the first positive battery terminal, and the first battery connected to the second positive battery terminal and the second negative battery terminal. The communication line for the two batteries to communicate with,
Data including identification information of the first battery connected to the first positive battery terminal and the first negative battery terminal via the communication line, and the second positive battery terminal and the second negative battery terminal. By receiving the data including the identification information of the second battery connected to the battery terminal, the identification information of the first and second batteries is recognized, and the first battery and the second battery are recognized. A drive control unit that controls the electrical circuit connection of the battery and also controls the charging / discharging of the first battery and the second battery.
In the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.
In the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied through the switch circuit to start the operation.
After startup, the first battery is activated to communicate via the communication line to set the identification information of the first battery, and then the second battery is activated to communicate via the communication line. It is characterized in that it communicates and sets the identification information of the second battery so as to be different from the identification information of the first battery.

In the power control device
The drive control unit
It is characterized in that a motor drive voltage is generated from the voltages of the first battery and the second battery, and the motor is driven by the motor drive voltage.

In the power control device
The first starting voltage terminal connected to the drive control unit and
The second starting voltage terminal to which the charger can be connected,
The first battery can be connected to the other end of the switch circuit and the power supply terminal for the first battery connected to the reference charging terminal.
The second battery can be connected, and further includes a second battery power supply terminal connected to the first and second starting voltage terminals.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied via the switch circuit and the power supply terminal TPS1 for the drive control unit to start the operation.
After the first battery was supplied with the reference voltage of the reference battery via the switch circuit and the power supply terminal for the first battery and started, the first battery output via the communication line. By receiving the initial data including the identification information, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the first starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, the second battery is instructed not to switch the identification information from the initial identification information via the communication line.
After instructing not to switch the initial identification information, the second battery receives the switching data including the initial identification information output via the communication line to obtain the identification information of the second battery. It is characterized in that it is confirmed that the setting for maintaining the initial identification information is completed.

In the power control device
The first starting voltage terminal connected to the drive control unit and
The second starting voltage terminal to which the charger can be connected,
The first battery can be connected to the other end of the switch circuit and the power supply terminal for the first battery connected to the reference charging terminal.
The second battery can be connected, and further includes a second battery power supply terminal connected to the first and second starting voltage terminals.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied via the switch circuit and the power supply terminal for the drive control unit to start the operation.
After the first battery was supplied with the reference voltage of the reference battery via the switch circuit and the power supply terminal for the first battery and started, the first battery output via the communication line. By receiving the initial data including the identification information, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the first starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, identification information is transmitted to the second battery via the communication line from the initial identification information to the initial identification information and the first identification information. Instructed to switch to a second identification information different from
After instructing to switch to the second identification information, the second battery receives switching data including the second identification information output via the communication line, whereby the second battery of the second battery It is characterized in that it is confirmed that the setting for switching the identification information to the second identification information is completed.

In the power control device
When the drive control unit supplies the voltages of the first battery and the second battery to the motor after setting the identification information of the first and second batteries to drive the motor, the drive control unit may drive the motor. The circuit connection is controlled so that the first battery and the second battery are connected in series, and the motor is driven by a voltage in which the first battery and the second battery are connected in series. It is characterized by being driven.

In the power control device
The drive control unit
When the charger is connected to the reference charging terminal, a first starting voltage output by the charger is supplied via the reference charging terminal to start the battery.
The charger
After the first battery is started by being supplied with the first starting voltage from the charger via the reference charging terminal and the power supply terminal for the first battery, the first battery connects the communication line. By receiving the initial data including the identification information output via the above, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the second starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, the second battery is instructed not to switch the identification information from the initial identification information via the communication line.
After instructing not to switch the initial identification information, the second battery receives the switching data including the initial identification information output via the communication line to obtain the identification information of the second battery. It is characterized in that it is confirmed that the setting for maintaining the initial identification information is completed.

In the power control device
The drive control unit
When the charger is connected to the reference charging terminal, a first starting voltage output by the charger is supplied via the reference charging terminal to start the battery.
The charger
After the first battery is started by being supplied with the first starting voltage from the charger via the reference charging terminal TCS and the power supply terminal for the first battery, the first battery is the communication line. By receiving the initial data including the identification information output via the above, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the second starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, identification information is transmitted to the second battery via the communication line from the initial identification information to the initial identification information and the first identification information. Instructed to switch to a second identification information different from
After instructing to switch to the second identification information, the second battery receives switching data including the second identification information output via the communication line, whereby the second battery of the second battery It is characterized in that it is confirmed that the setting for switching the identification information to the second identification information is completed.

In the power control device
When the drive control unit charges the first battery and the second battery with the charger after setting the identification information of the first and second batteries, the first battery and the said The circuit connection is controlled so that the second battery is connected in parallel, and the first battery and the second battery are charged in parallel by the charger.

In the power control device
A first charging terminal to which the output on the high potential side of the charger is connected and a voltage on the high potential side of the charger is applied, and
A second charging terminal to which the output on the low potential side of the charger is connected and a voltage on the low potential side of the charger is applied, and
The first drive voltage terminal connected to the first positive battery terminal,
A second drive voltage terminal connected to the second charging terminal,
A first rectifying element, the first node of which is connected to the first charging terminal and the second node of which is connected to the first positive battery terminal to prevent backflow of current.
A second rectifying element, the first node of which is connected to the first charging terminal and the second node of which is connected to the second positive battery terminal to prevent backflow of current.
A first contactor connected between the first negative battery terminal and the second positive battery terminal and controlled by the drive control unit, and
A second contactor connected between the first negative battery terminal and the second charging terminal and controlled by the drive control unit is further provided.
The drive control unit
The motor drive voltage is generated from the voltage between the first drive voltage terminal and the second drive voltage terminal, and the motor is driven by the motor drive voltage.

In the power control device
The drive control unit
When discharging the first battery and the second battery, the first battery and the second battery can be obtained by turning on the first contactor and turning off the second contactor. Connect in series,
On the other hand, when charging the first battery and the second battery, by turning off the first contactor and turning on the second contactor, the first battery and the second battery can be charged. It is characterized by connecting in parallel.

In the power control device
The configuration of the second battery is the same as that of the first battery.

In the power control device
The communication line includes a first communication line for the first and second batteries to transmit data to the drive control unit, and commands of the drive control unit or the charger of the first and second units. It is characterized by including a second communication line for transmitting to the battery.

In the power control device
The electric power control device is loaded on an electric motorcycle, the motor is connected to the wheels of the electric motorcycle, and the drive control unit controls the rotation of the wheels by controlling the drive of the motor. To do.

In the power control device
The reference battery is a lead battery and
The first and second batteries are lithium batteries.

The control method of the power control device according to the embodiment according to one aspect of the present invention is as follows.
The reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied, the reference charging terminal to which the charger can be connected, and the first positive to which the positive electrode of the first battery can be connected. The battery terminal, the first negative battery terminal to which the negative electrode of the first battery can be connected, the second positive battery terminal to which the positive electrode of the second battery can be connected, and the second positive battery terminal. The second negative battery terminal to which the negative electrode of the battery can be connected, one end is connected to the reference battery terminal, and the other end is the reference charging terminal, the first battery power supply terminal, and the drive control unit power supply. The switch circuit connected to the terminal communicates with the first positive battery terminal and the first battery connected to the first negative battery terminal, and the second positive battery terminal and the second positive battery terminal. A communication line for communicating with the second battery connected to the negative battery terminal, and the first one connected to the first positive battery terminal and the first negative battery terminal via the communication line. By receiving the data including the identification information of the battery and the data including the identification information of the second battery connected to the second positive battery terminal and the second negative battery terminal, the first and first Recognizing the identification information of the two batteries, the electrical circuit connection between the first battery and the second battery is controlled, and the charging / discharging of the first battery and the second battery is controlled. It is a control method of a power control device including a drive control unit and a drive control unit.
In the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.
In the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.
By the drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied through the switch circuit to start the operation.
After startup, the first battery is activated to communicate via the communication line to set the identification information of the first battery, and then the second battery is activated to communicate via the communication line. It is characterized in that it communicates and sets the identification information of the second battery so as to be different from the identification information of the first battery.

In the power control device according to one aspect of the present invention of the present invention, the reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied, the reference charging terminal to which the charger can be connected, and the first. The first positive battery terminal to which the positive side of the battery can be connected, the first negative battery terminal to which the negative side of the first battery can be connected, and the positive side of the second battery can be connected. The second positive battery terminal and the second negative battery terminal to which the negative electrode of the second battery can be connected, one end is connected to the reference battery terminal, the other end is the reference charging terminal, and the first The switch circuit connected to the battery power supply terminal and the drive control unit power supply terminal communicates with the first battery connected to the first positive battery terminal and the first negative battery terminal, and the drive control unit. , A communication line for communicating between the second battery connected to the second positive battery terminal and the second negative battery terminal and the drive control unit, and the first positive battery terminal and the communication line via the communication line. Data including identification information of the first battery connected to the first negative battery terminal, and data including identification information of the second battery connected to the second positive battery terminal and the second negative battery terminal. , Recognizes the identification information of the first and second batteries, controls the electrical circuit connection between the first battery and the second battery, and controls the electrical circuit connection between the first battery and the second battery. It is provided with a drive control unit for controlling the charging and discharging of the battery.

Then, in the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.

Then, in the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.

Then, when the switch circuit is turned on, the drive control unit is activated by supplying the reference voltage of the reference battery via the switch circuit, and after activation, activates the first battery and communicates via the communication line. The identification information of the first battery is set, and then the second battery is started and communicated via the communication line to set the identification information of the second battery so as to be different from the identification information of the first battery. ..

As described above, in the present invention, after the battery is started, the setting of the identification information is switched between the battery and the drive control unit with respect to the initial identification information to start the next battery, so that a plurality of batteries can stand without duplication. The raising can be completed.

In particular, when multiple same batteries are connected to one communication line (bus) and multiple batteries are started, the IDs are sequentially switched to recognize (connect) the batteries when starting multiple batteries. It is possible to reduce the cost while improving the expandability for the determination).

As described above, according to the present invention, it is possible to reduce the cost while improving the expandability for recognizing the batteries when starting a plurality of batteries.

FIG. 1 is a diagram showing an example of the configuration of the power control device 100 according to the embodiment. FIG. 2 is a diagram for explaining an example of operation at the time of starting the first and second batteries of the power control device 100 shown in FIG. FIG. 3 is a diagram for explaining another example of the operation at the time of starting the first and second batteries of the power control device 100 shown in FIG.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

First Embodiment

FIG. 1 is a diagram showing an example of the configuration of the power control device 100 according to the embodiment. Note that FIG. 1 shows the case where the minimum unit is two mobile batteries (first and second batteries B1 and B2), but when three or more mobile batteries are connected. Is explained in the same way.

The power control device 100 according to the present embodiment includes, for example, as shown in FIG. 1, a reference battery terminal TK, a reference charging terminal TCS, a first positive battery terminal T1P, a first negative battery terminal T1N, and the like. The second positive battery terminal T2P, the second negative battery terminal T2N, the first battery power supply terminal T1B, the second battery power supply terminal T2B, the first drive voltage terminal TDP, and the second Drive voltage terminal TDN, communication line CAN, power supply terminal TG for drive control unit, first start-up voltage terminal TPS2, second start-up voltage terminal TCOUT, first charge terminal TCP, second charge Terminal TCN, switch circuit SW, main switch control unit X, drive control unit PDU, down regulator DR, first rectifying element DA, second rectifying element DB, first contactor CA, It includes a second contactor CB.

The electric power control device 100 is loaded on, for example, an electric motorcycle (vehicle). The motor M is connected to the wheels of the electric motorcycle.

The power control device 100 is started by the voltage of the reference battery (lead battery) K. Then, the power control device 100 generates a motor drive voltage from the voltages of the first and second batteries (Li batteries) B1 and B2, and drives the motor M by the motor drive voltage. The power control device 100 controls the rotation of the wheels by controlling the drive of the motor M.

Here, the positive electrode of the reference battery K is connected to the reference battery terminal TK, and the reference voltage is supplied. The reference battery K is, for example, a lead battery.

Further, in the example of FIG. 1, the output of the high potential side of the charger CH is connected to the first charging terminal TCP, and the voltage on the high potential side of the charger CH is applied.

Further, in the example of FIG. 1, the second charging terminal TCN is connected to the output on the low potential side of the charger CH, and the voltage on the low potential side of the charger CH is applied.

Further, the reference charging terminal TCS is connectable to the charger CH, and is electrically connected to the first battery power supply terminal T1B and the drive control unit power supply terminal TPS1.

The charger CH may be connected at least when charging the first and second batteries B1 and B2, and when the above-mentioned electric motorcycle is running, the power control device loaded on the electric motorcycle is used. It may be removed from 100 (each terminal TCN, TCP, TCOUT, TCS).

Further, the first drive voltage terminal TDP is electrically connected to the first positive battery terminal T1P.

Further, the second drive voltage terminal TDN is electrically connected to the second charging terminal TCN.

Further, the power supply terminal TG for the drive control unit is electrically connected to the reference charging terminal TCS.

Further, the first starting voltage terminal TPS2 is connected to the drive control unit PDU and is electrically connected to the second battery power supply terminal T2B.

Further, the second starting voltage terminal TCOUT can be connected to the charger CH, and is electrically connected to the second battery power supply terminal T2B.

Further, the first battery power supply terminal T1B can be connected to the first battery B1 and is connected to the other end of the switch circuit SW and the reference charging terminal TCS.

Further, the second battery power supply terminal T2B can be connected to the second battery B2, and is connected to the first and second starting voltage terminals TPS2 and TCOUT.

Further, the first and second batteries B1 and B2, which are mobile batteries, are, for example, lithium batteries. That is, the battery voltage (48V) output by the first and second batteries B1 and B2 is set to be higher than the battery voltage (12V) which is the reference voltage output by the reference battery K.

Further, the positive electrode of the first battery B1 described above can be connected to the first positive battery terminal T1P. The negative electrode of the first battery B1 can be connected to the first negative battery terminal T1N.

Here, the first battery B1 includes, for example, a first cell (a plurality of lithium ion batteries connected in series) S1 and a first management unit BMU1 as shown in FIG.

Then, the first cell S1 charges the voltage between the first positive battery terminal T1P and the first negative battery terminal T1N, or the first positive battery terminal T1P and the first negative battery terminal T1N. The charging voltage is discharged between and.

Then, the first management unit BMU1 is activated by the reference voltage supplied to the first battery power supply terminal T1B, and is in the state of the first cell S1 (that is, the first battery B1) (first cell S1). Cell voltage, SOC of the first cell S1, temperature of the first cell S1, current of the first cell S1, etc.), and the state of the first cell S1 (that is, the first battery B1). Data including information related to the above and the above-mentioned identification information are intermittently output via the communication line CAN.

In the initial state before the connection of the first battery B1, the identification information of the first battery B1 is set to the initial identification information.

Further, when the first battery B1 is removed from the power control device 100 (for example, each terminal T1P, T1N, and T1B), its identification information is reset to the initial identification information.

Then, the first management unit BMU1 uses the first management contactor T1 for forcibly stopping the charging / discharging of the first cell S1 according to the state (failure or the like) of the first cell S1. Be prepared.

Further, the positive electrode of the second battery B2 described above can be connected to the second positive battery terminal T2P. The negative electrode of the second battery B2 can be connected to the second negative battery terminal T2N.

Here, the second battery B2 includes a second cell (a plurality of lithium ion batteries connected in series) S2 and a second management unit BMU2.

Then, the second cell S2 charges the voltage between the second positive battery terminal T2P and the second negative battery terminal T2N, or the second positive battery terminal T2P and the second negative battery terminal T2N. The charging voltage is discharged between and.

Then, the second management unit BMU2 is started by the first or second starting voltage supplied to the second battery power supply terminal T2B, and is in the state of the second cell S2 (that is, the second battery B2). (Cell voltage of the second cell S2, SOC of the second cell S2, temperature of the second cell S2, current of the second cell S2, etc.) are monitored, and the second cell S2 (that is, the second cell S2) is monitored. Information about the state of the battery B2) is output.

In the initial state before the connection of the second battery B2, the identification information of the second battery B2 is set to the same initial identification information as the identification information of the first battery B1.

Then, the second management unit MBU2 uses the second management contactor T2 for forcibly stopping the charging / discharging of the second cell S2 according to the state (failure or the like) of the second cell S2. Be prepared.

Further, when the second battery B2 is removed from the power control device 100 (for example, each terminal T2P, T2N, and T2B), its identification information is reset to the initial identification information.

The configuration of the second battery B2 is the same as the configuration of the first battery B1 described above.

Further, one end of the switch circuit SW is connected to the reference battery terminal TK, and the other end is electrically connected to the reference charging terminal TCS, the first battery power supply terminal T1B, and the drive control unit power supply terminal TPS1.

When the switch circuit SW is turned on, for example, the reference voltage of the reference battery K is supplied to the drive control unit PDU and the first battery B1.

On the other hand, when the switch circuit SW is turned off, the supply of the reference voltage of the reference battery K to the drive control unit PDU and the first battery B1 is cut off.

Further, the main switch control unit X is supplied with electric power from the positive electrode of the reference battery K, and controls the switch circuit SW according to a user's operation (action) or the like.

Further, in the communication line CAN, the first battery B1 connected to the first positive battery terminal T1P and the first negative battery terminal T1N communicates with the drive control unit PDU (or charger CH), and the second The second battery B2 connected to the positive battery terminal T2P and the second negative battery terminal T2N of the above is for communicating with the drive control unit PDU (or the charger CH).

The communication line CAN is a first communication line CAN1 for the first and second batteries B1 and B2 to transmit data to the drive control unit PDU, and commands of the drive control unit PDU or the charger CH are first and foremost. It includes a second communication line CAN2 for transmitting to the second batteries B1 and B2.

Further, the down regulator DR steps down the voltage between the first drive voltage terminal TDP and the second drive voltage terminal TDN and outputs the voltage.

This down regulator DR is, for example, a DC-DC converter that steps down the voltage between the first drive voltage terminal TDP and the second drive voltage terminal TDN and outputs the voltage to the load terminal TR to which the load load is connected. .. The reference battery K is charged by the voltage output by the down regulator DR.

The load load includes, for example, any of the above-mentioned lights, blinkers, or indicators of the electric motorcycle, and other electronic components necessary for traveling of the electric motorcycle.

Then, the reference battery K is charged by the voltage output by the down regulator DR.

Further, in the first rectifying element DA, the first node (anode) is connected to the first charging terminal TCP, and the second node (cathode) is connected to the first positive battery terminal T1P to prevent backflow of current. It is the first diode to be used.

Further, in the second rectifying element DB, the first node (anode) is connected to the first charging terminal TCP and the second node (cathode) is connected to the second positive battery terminal T2P to prevent backflow of current. It is the second diode to be used.

Further, the first contactor CA is connected between the first negative battery terminal T1N and the second positive battery terminal T2P. The first contactor CA is controlled to be turned on / off by the drive control unit PDU.

Further, the second contactor CB is connected between the first negative battery terminal T1N and the second charging terminal TCN. The second contactor CB is controlled to be turned on / off by the drive control unit PDU.

Further, as shown in FIG. 1, the drive control unit PDU generates a motor drive voltage from the voltages of the first battery B1 and the second battery B2, and drives the motor by the motor drive voltage. It has become. Then, the drive control unit PDU controls the rotation of the wheel by controlling the drive of the motor M.

As shown in FIG. 1, the drive control unit PDU includes, for example, a capacitor Z connected between the first drive voltage terminal TDP and the second drive voltage terminal TDN, and the first drive voltage terminal TDP. A bridge circuit Y, which is supplied with a voltage between the second drive voltage terminal TDN and outputs a motor drive voltage to the motor M to drive the motor M, is provided.

For example, the drive control unit PDU generates a motor drive voltage by the bridge circuit Y from the voltage between the first drive voltage terminal TDP and the second drive voltage terminal TDN, and drives the motor by the motor drive voltage. It has become like.

The drive control unit PDU includes data including identification information of the first battery B1 connected to the first positive battery terminal T1P and the first negative battery terminal T1N via the communication line CAN, and the second positive battery terminal T1N. Data including identification information of the second battery B2 connected to the battery terminal T1P and the second negative battery terminal T2N is received.

As a result, the drive control unit PDU recognizes the identification information of the first and second batteries B1 and B2, and electrically connects the first battery B1 and the second battery B2 (first and second batteries). The contactors CA and CB) are controlled, and the charge and discharge of the first battery B1 and the second battery B2 are controlled.

For example, when the drive control unit PDU discharges the first battery B1 and the second battery B2 (when the vehicle is running), the drive control unit PDU turns on the first contactor CA and turns off the second contactor CB. Therefore, the first battery B1 and the second battery B2 are connected in series.

On the other hand, when the drive control unit PDU charges the first battery B1 and the second battery B2 (when charging by the charger CH), the drive control unit PDU turns off the first contactor CA and turns on the second contactor CB. By doing so, the first battery B1 and the second battery B2 are connected in parallel.

Further, when the switch circuit SW is turned on, the drive control unit PDU is started by supplying the reference voltage of the reference battery K via the switch circuit SW.

Then, after starting, the drive control unit PDU activates the first battery B1 and communicates via the communication line CAN to set the identification information of the first battery B1 and then sets the second battery B2. It is activated and communicates via the communication line CAN to set the identification information of the second battery B2 so as to be different from the identification information of the first battery B1.

Further, the drive control unit PDU acquires a plurality of information from the management units BMU1 and BMU2 via the communication line CAN. In particular, the drive control unit PDU has the state of the first battery B1 normal or abnormal based on the battery information regarding the states of the first battery B1 and the second battery B2 output by the management units BMU1 and BMU2. It is designed to judge whether it is (or is out of order).

Here, when the drive function of the motor M is stopped, the drive control unit PDU opens all the transistors of the bridge circuit Y, or shorts the high-side or low-side transistors, for example. There is.

The drive control unit PDU can communicate with the charger CH described above via the communication line CAN. Then, when the charger CH is connected to the reference charging terminal TCS, the drive control unit PDU supplies the first starting voltage output by the charger CH via the reference charging terminal TCS and the drive control unit power supply terminal TG. It is designed to be started.

The charger CH also has data including identification information of the first battery B1 connected to the first positive battery terminal T1P and the first negative battery terminal T1N via the communication line CAN, and the second positive battery terminal T1N. Data including identification information of the second battery B2 connected to the battery terminal T1P and the second negative battery terminal T2N is received.

Then, at the time of charging, the charger CH activates the first battery B1 and communicates via the communication line CAN to set the identification information of the first battery B1 and then activates the second battery B2. It is possible to communicate via the communication line CAN and set the identification information of the second battery B2 so as to be different from the identification information of the first battery B1.

Here, an example of the operation of the control method of the power control device 100 having the above configuration will be described.

First, an example of activating the first and second batteries B1 and B2 at the start of traveling of the electric motorcycle will be described. FIG. 2 is a diagram for explaining an example of the operation at the time of starting the first, B1 and B2 of the power control device 100 shown in FIG.

For example, as shown in FIG. 2, when the switch circuit SW is turned on by the control of the main switch control unit X, the drive control unit PDU has a reference voltage of the reference battery K via the switch circuit SW and the drive control unit power supply terminal TPS1. Is supplied and started (F1).

Then, in the drive control unit PDU, after the first battery B1 is supplied with the reference voltage of the reference battery K via the switch circuit SW and the power supply terminal T1B for the first battery and started, the first battery B1 communicates. By receiving the initial data including the identification information output via the line CAN, it is confirmed that the first battery B1 is normally connected (F2).

Then, after confirming that the first battery B1 is normally connected, the drive control unit PDU transmits the identification information to the first battery B1 via the communication line CAN from the above-mentioned initial identification information. It is instructed to switch to the first identification information different from the initial identification information (F3).

Then, after instructing the drive control unit PDU to switch to the first identification information, the drive control unit PDU receives the switching data including the first identification information output by the first battery B1 via the communication line CAN. , Confirm that the setting for switching the identification information of the first battery B1 to the first identification information is completed.

Then, after confirming that the setting for switching to the first identification information is completed, the drive control unit PDU sets the second starting voltage for starting the second battery B2 to the first starting voltage. It is supplied to the second battery B2 via the terminal TPS2 and the second battery power supply terminal T2B (F4).

Then, the drive control unit PDU receives the initial data including the identification information output by the second battery B2 via the communication line CAN after the second battery B2 is supplied with the second starting voltage and started. By doing so, it is confirmed that the second battery B2 is normally connected (F5).

Then, after confirming that the second battery B2 is normally connected, the drive control unit PDU does not switch the identification information to the second battery B2 from the initial identification information via the communication line CAN. Instruct (F6).

Then, the drive control unit PDU receives the switching data including the initial identification information output by the second battery B2 via the communication line CAN after instructing that the initial identification information is not switched, so that the second battery B2 receives the second identification information. Confirm that the setting for maintaining the identification information of the battery B2 of the above is completed in the initial identification information.

By the above operation of the drive control unit PDU, the first and second batteries B1 and B2 can be started by setting different identification information at the start of traveling of the electric motorcycle.

In the operation of setting the above-mentioned identification information, the drive control unit PDU confirms that the second battery B2 is normally connected, and then connects the identification information to the second battery B2 via the communication line. May be instructed to switch from the initial identification information to the initial identification information and the second identification information different from the initial identification information (F6).

In this case, the drive control unit PDU receives the switching data including the second identification information output by the second battery B2 via the communication line CAN after instructing to switch to the second identification information. , It is confirmed that the setting for switching the identification information of the second battery B2 to the second identification information is completed.

The drive control unit PDU supplies the voltage of the first battery B1 and the second battery B2 to the motor M after setting the identification information of the first and second batteries B1 and B2 described above, and then supplies the voltage of the first battery B1 and the second battery B2 to the motor M. When driving, the circuit connection (first and second contactors CA, CB) is controlled so that the first battery B1 and the second battery B2 are connected in series, and the first The motor M is driven by a voltage in which the battery B1 and the second battery B2 are connected in series. By driving the motor M, the wheels rotate and the electric motorcycle runs.

Next, an example of starting the first and second batteries B1 and B2 at the start of charging by the charger CH will be described. FIG. 3 is a diagram for explaining another example of the operation at the time of starting the first and second batteries B1 and B2 of the power control device 100 shown in FIG. In the example shown in FIG. 3, the switch circuit SW is turned off.

For example, as shown in FIG. 3, in the drive control unit PDU, when the charger CH is connected to the reference charging terminal TCS, the first starting voltage output by the charger CH is used for the reference charging terminal TCS and the drive control unit. It is supplied and activated via the power supply terminal TG (F1a).

Then, the charger CH is started after the first battery B1 is supplied with the first starting voltage from the charger CH via the reference charging terminal TCS and the first battery power supply terminal T1B (F1a). By receiving the initial data including the identification information output by the battery B1 of 1 via the communication line CAN, it is confirmed that the first battery B1 is normally connected (F2a).

Then, after confirming that the first battery B1 is normally connected, the charger CH transfers the identification information to the first battery B1 via the communication line CAN from the initial identification information. It is instructed to switch to the first identification information different from the above (F3a).

Then, after instructing the charger CH to switch to the first identification information, the charger CH receives the switching data including the first identification information output by the first battery B1 via the communication line CAN, thereby causing the first identification information. It is confirmed that the setting for switching the identification information of the battery B1 of 1 to the first identification information is completed.

Then, after confirming that the setting for switching to the first identification information is completed, the charger CH sets the second starting voltage for starting the second battery B2 to the second starting voltage terminal. It is supplied to the second battery B2 via the TCOUT and the second battery power supply terminal T2B (F4a).

Then, the charger CH receives the initial data including the identification information output by the second battery B2 via the communication line CAN after the second battery B2 is supplied with the second starting voltage and started. Then, it is confirmed that the second battery B2 is normally connected (F5a).

Then, after confirming that the second battery B2 is normally connected, the charger CH instructs the second battery B2 not to switch the identification information from the initial identification information via the communication line CAN. (F6a).

Then, after instructing that the initial identification information is not switched, the charger CH receives the switching data including the initial identification information output by the second battery B2 via the communication line CAN, so that the second battery Confirm that the setting for maintaining the identification information of B2 as the initial identification information is completed.

By the operation of the drive control unit PDU and the charger CH as described above, the first and second batteries B1 and B2 can be started by setting different identification information at the start of charging by the charger CH.

In the operation of setting the above-mentioned identification information, the charger CH confirms that the second battery B2 is normally connected, and then connects the identification information to the second battery B2 via the communication line CAN. May be instructed to switch from the initial identification information to the initial identification information and the second identification information different from the initial identification information and the first identification information (F6a).

In this case, after instructing the charger CH to switch to the second identification information, the charger CH receives the switching data including the second identification information output by the second battery B2 via the communication line. It is confirmed that the setting for switching the identification information of the battery B2 of 2 to the second identification information is completed.

In the drive control unit PDU, after setting the identification information of the first and second batteries B1 and B2 described above, and after setting the identification information of the first and second batteries B1 and B2, the first battery B1 and When the second battery B2 is charged by the charger CH, the circuit connection (first and second contactors CA, CB) is connected so that the first battery B1 and the second battery B2 are connected in parallel. ) Is controlled.

Then, the charger CH charges the first battery B1 and the second battery B2 in parallel with the first battery B1 and the second battery B2 connected in parallel.

As described above, in the power control device according to one aspect of the present invention, the reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied, the reference charging terminal to which the charger can be connected, and the reference charging terminal. The first positive battery terminal to which the positive side of the first battery can be connected, the first negative battery terminal to which the negative side of the first battery can be connected, and the positive side of the second battery are connected. A second positive battery terminal that is enabled, a second negative battery terminal to which the negative electrode of the second battery can be connected, one end is connected to the reference battery terminal, and the other end is the reference charging terminal. The switch circuit connected to the power supply terminal for the first battery and the power supply terminal for the drive control unit communicates with the first battery connected to the first positive battery terminal and the first negative battery terminal and the drive control unit. At the same time, the second positive battery connected to the second positive battery terminal and the second negative battery terminal, the communication line for communicating with the drive control unit, and the first positive battery via the communication line. It contains data including identification information of the first battery connected to the terminal and the first negative battery terminal, and identification information of the second battery connected to the second positive battery terminal and the second negative battery terminal. By receiving the data, the identification information of the first and second batteries is recognized to control the electrical circuit connection between the first battery and the second battery, and the first battery and the second battery are used. It is provided with a drive control unit for controlling the charging and discharging of the battery.

Then, in the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.

Then, in the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.

Then, when the switch circuit is turned on, the drive control unit is activated by supplying the reference voltage of the reference battery via the switch circuit, and after activation, activates the first battery and communicates via the communication line. The identification information of the first battery is set, and then the second battery is started and communicated via the communication line to set the identification information of the second battery so as to be different from the identification information of the first battery. ..

As described above, in the present invention, after the battery is started, the setting of the identification information is switched between the battery and the drive control unit with respect to the initial identification information to start the next battery, so that a plurality of batteries can stand without duplication. The raising can be completed.

In particular, when multiple same batteries are connected to one communication line (bus) and multiple batteries are started, the IDs are sequentially switched to recognize (connect) the batteries when starting multiple batteries. It is possible to reduce the cost while improving the expandability for the determination).

As described above, according to the power control device according to the embodiment, it is possible to reduce the cost while improving the expandability for recognizing the batteries when starting a plurality of batteries.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

100 Power controller TK Reference battery terminal TCS Reference charging terminal T1P First positive battery terminal T1N First negative battery terminal T2P Second positive battery terminal T2N Second negative battery terminal T1B First battery power supply terminal T2B 2 Battery power supply terminal TDP 1st drive voltage terminal TDN 2nd drive voltage terminal CAN communication line TPS2 1st start-up voltage terminal TCOUT 2nd start-up voltage terminal TCP 1st charge terminal TCN 2nd charge terminal TG Power supply terminal for drive control unit SW switch circuit X Main switch control unit PDU Drive control unit DR Down regulator DA 1st rectifying element DB 2nd rectifying element CA 1st contactor CB 2nd contactor

Claims (15)

The reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied,
With the reference charging terminal to which the charger can be connected,
A first positive battery terminal to which the positive electrode of the first battery can be connected, and a first negative battery terminal to which the negative electrode of the first battery can be connected.
A second positive battery terminal to which the positive electrode of the second battery can be connected, and a second negative battery terminal to which the negative electrode of the second battery can be connected.
A switch circuit having one end connected to the reference battery terminal and the other end connected to the reference charging terminal, the first battery power supply terminal, and the drive control unit power supply terminal.
The first battery connected to the first positive battery terminal and the first negative battery terminal communicates with the first positive battery terminal, and the first battery connected to the second positive battery terminal and the second negative battery terminal. The communication line for the two batteries to communicate with,
Data including identification information of the first battery connected to the first positive battery terminal and the first negative battery terminal via the communication line, and the second positive battery terminal and the second negative battery terminal. By receiving the data including the identification information of the second battery connected to the battery terminal, the identification information of the first and second batteries is recognized, and the first battery and the second battery are recognized. A drive control unit that controls the electrical circuit connection of the battery and also controls the charging / discharging of the first battery and the second battery.
In the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.
In the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied through the switch circuit to start the operation.
After startup, the first battery is activated to communicate via the communication line to set the identification information of the first battery, and then the second battery is activated to communicate via the communication line. A power control device that communicates and sets the identification information of the second battery so as to be different from the identification information of the first battery. The drive control unit
The power control device according to claim 1, wherein a motor drive voltage is generated from the voltages of the first battery and the second battery, and the motor is driven by the motor drive voltage. The first starting voltage terminal connected to the drive control unit and
The second starting voltage terminal to which the charger can be connected,
The first battery can be connected to the other end of the switch circuit and the power supply terminal for the first battery connected to the reference charging terminal.
The second battery can be connected, and further includes a second battery power supply terminal connected to the first and second starting voltage terminals.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied via the switch circuit and the power supply terminal TPS1 for the drive control unit to start the operation.
After the first battery was supplied with the reference voltage of the reference battery via the switch circuit and the power supply terminal for the first battery and started, the first battery output via the communication line. By receiving the initial data including the identification information, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the first starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, the second battery is instructed not to switch the identification information from the initial identification information via the communication line.
After instructing not to switch the initial identification information, the second battery receives the switching data including the initial identification information output via the communication line to obtain the identification information of the second battery. The power control device according to claim 2, wherein it is confirmed that the setting for maintaining the initial identification information has been completed. The first starting voltage terminal connected to the drive control unit and
The second starting voltage terminal to which the charger can be connected,
The first battery can be connected to the other end of the switch circuit and the power supply terminal for the first battery connected to the reference charging terminal.
The second battery can be connected, and further includes a second battery power supply terminal connected to the first and second starting voltage terminals.
The drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied via the switch circuit and the power supply terminal for the drive control unit to start the operation.
After the first battery was supplied with the reference voltage of the reference battery via the switch circuit and the power supply terminal for the first battery and started, the first battery output via the communication line. By receiving the initial data including the identification information, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the first starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, identification information is transmitted to the second battery via the communication line from the initial identification information to the initial identification information and the first identification information. Instructed to switch to a second identification information different from
After instructing to switch to the second identification information, the second battery receives switching data including the second identification information output via the communication line, whereby the second battery of the second battery The power control device according to claim 2, wherein it is confirmed that the setting for switching the identification information to the second identification information is completed. When the drive control unit supplies the voltages of the first battery and the second battery to the motor after setting the identification information of the first and second batteries to drive the motor, the drive control unit may drive the motor. The circuit connection is controlled so that the first battery and the second battery are connected in series, and the motor is driven by a voltage in which the first battery and the second battery are connected in series. The power control device according to claim 3 or 4, wherein the power control device is driven. The drive control unit
When the charger is connected to the reference charging terminal, a first starting voltage output by the charger is supplied via the reference charging terminal to start the battery.
The charger
After the first battery is started by being supplied with the first starting voltage from the charger via the reference charging terminal and the power supply terminal for the first battery, the first battery connects the communication line. By receiving the initial data including the identification information output via the above, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the second starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, the second battery is instructed not to switch the identification information from the initial identification information via the communication line.
After instructing not to switch the initial identification information, the second battery receives the switching data including the initial identification information output via the communication line to obtain the identification information of the second battery. The power control device according to claim 5, wherein it is confirmed that the setting for maintaining the initial identification information has been completed. The drive control unit
When the charger is connected to the reference charging terminal, a first starting voltage output by the charger is supplied via the reference charging terminal to start the battery.
The charger
After the first battery is started by being supplied with the first starting voltage from the charger via the reference charging terminal TCS and the power supply terminal for the first battery, the first battery is the communication line. By receiving the initial data including the identification information output via the above, it is confirmed that the first battery is normally connected.
After confirming that the first battery is normally connected, identification information is transmitted to the first battery via the communication line from the initial identification information to a first identification different from the initial identification information. Instruct to switch to information,
After instructing to switch to the first identification information, the first battery receives switching data including the first identification information output via the communication line to obtain the first battery. After confirming that the setting for switching the identification information to the first identification information is completed,
After confirming that the setting for switching to the first identification information is completed, the second starting voltage for starting the second battery is set to the second starting voltage terminal and the second battery. Supply to the second battery via the power supply terminal for
After the second battery is supplied with the second starting voltage and started up, the second battery receives initial data including identification information output via the communication line to receive the second battery. Make sure the battery is connected properly and
After confirming that the second battery is normally connected, identification information is transmitted to the second battery via the communication line from the initial identification information to the initial identification information and the first identification information. Instructed to switch to a second identification information different from
After instructing to switch to the second identification information, the second battery receives switching data including the second identification information output via the communication line, whereby the second battery of the second battery The power control device according to claim 5, wherein it is confirmed that the setting for switching the identification information to the second identification information is completed. When the drive control unit charges the first battery and the second battery with the charger after setting the identification information of the first and second batteries, the first battery and the said 6. The sixth aspect of the invention is characterized in that the circuit connection is controlled so that the second battery is connected in parallel, and the first battery and the second battery are charged in parallel by the charger. Or the power control device according to 7. A first charging terminal to which the output on the high potential side of the charger is connected and a voltage on the high potential side of the charger is applied, and
A second charging terminal to which the output on the low potential side of the charger is connected and a voltage on the low potential side of the charger is applied, and
The first drive voltage terminal connected to the first positive battery terminal,
A second drive voltage terminal connected to the second charging terminal,
A first rectifying element, the first node of which is connected to the first charging terminal and the second node of which is connected to the first positive battery terminal to prevent backflow of current.
A second rectifying element, the first node of which is connected to the first charging terminal and the second node of which is connected to the second positive battery terminal to prevent backflow of current.
A first contactor connected between the first negative battery terminal and the second positive battery terminal and controlled by the drive control unit, and
A second contactor connected between the first negative battery terminal and the second charging terminal and controlled by the drive control unit is further provided.
The drive control unit
The motor drive voltage is generated from the voltage between the first drive voltage terminal and the second drive voltage terminal, and the motor is driven by the motor drive voltage.
The power control device according to claim 8. The drive control unit
When discharging the first battery and the second battery, the first battery and the second battery can be obtained by turning on the first contactor and turning off the second contactor. Connect in series,
On the other hand, when charging the first battery and the second battery, by turning off the first contactor and turning on the second contactor, the first battery and the second battery can be charged. 9. The power control device according to claim 9, wherein the power control devices are connected in parallel. The power control device according to claim 8, wherein the configuration of the second battery is the same as that of the first battery. The communication line includes a first communication line for the first and second batteries to transmit data to the drive control unit, and commands of the drive control unit or the charger of the first and second units. The power control device according to claim 1, further comprising a second communication line for transmitting to a battery. The electric power control device is loaded on an electric motorcycle, the motor is connected to the wheels of the electric motorcycle, and the drive control unit controls the rotation of the wheels by controlling the drive of the motor. The power control device according to claim 8. The reference battery is a lead battery and
The power control device according to claim 11, wherein the first and second batteries are lithium batteries. The reference battery terminal to which the positive electrode of the reference battery is connected and the reference voltage is supplied, the reference charging terminal to which the charger can be connected, and the first positive to which the positive electrode of the first battery can be connected. The battery terminal, the first negative battery terminal to which the negative electrode of the first battery can be connected, the second positive battery terminal to which the positive electrode of the second battery can be connected, and the second positive battery terminal. The second negative battery terminal to which the negative electrode of the battery can be connected, one end is connected to the reference battery terminal, and the other end is the reference charging terminal, the first battery power supply terminal, and the drive control unit power supply. The switch circuit connected to the terminal communicates with the first positive battery terminal and the first battery connected to the first negative battery terminal, and the second positive battery terminal and the second positive battery terminal. A communication line for communicating with the second battery connected to the negative battery terminal, and the first one connected to the first positive battery terminal and the first negative battery terminal via the communication line. By receiving the data including the identification information of the battery and the data including the identification information of the second battery connected to the second positive battery terminal and the second negative battery terminal, the first and first Recognizing the identification information of the two batteries, the electrical circuit connection between the first battery and the second battery is controlled, and the charging / discharging of the first battery and the second battery is controlled. It is a control method of a power control device including a drive control unit and a drive control unit.
In the initial state before the connection of the first battery, the identification information of the first battery is set to the initial identification information.
In the initial state before the connection of the second battery, the identification information of the second battery is set to the initial identification information.
By the drive control unit
When the switch circuit is turned on, the reference voltage of the reference battery is supplied through the switch circuit to start the operation.
After startup, the first battery is activated to communicate via the communication line to set the identification information of the first battery, and then the second battery is activated to communicate via the communication line. A control method of a control method of a power control device, which comprises communicating and setting the identification information of the second battery so as to be different from the identification information of the first battery.

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