JP5902133B2 - Power supply - Google Patents

Description

  The present invention relates to a power supply device including a plurality of battery packs.

  2. Description of the Related Art Conventionally, a battery pack that constitutes a power supply device as described above includes an electronic control unit (ECU) that manages charge / discharge of the batteries in the battery pack. Such an ECU determines whether to permit / disallow charging / discharging of the battery pack based on the state of the safety device and various states of the battery pack. If the number of battery packs constituting the power supply device increases, the ECU provided in each battery pack is connected not only to the state of the battery pack provided by itself but also to the power circuit of the battery pack. It is necessary to determine whether charging / discharging is permitted or not with reference to various states of other battery packs. Therefore, for example, Patent Document 1 describes a technique for setting different addresses in the ECUs of the battery packs constituting the power supply device.

  The power supply device (battery pack system) described in Patent Literature 1 includes a plurality of battery packs (assembled battery block). Each battery pack includes a battery stack in which a plurality of secondary batteries are connected in series, and a slave ECU or a master ECU. In this power supply device, all the battery packs are connected by a bus communication signal line, and only one of these battery packs is connected by an external device and a communication signal line for an external device. In address setting, first, an ECU connected to an external device recognizes itself as a master ECU, stores a value (for example, “1”) that is a master address, and sets it as a self-address. Next, the master ECU transmits an address setting request command to other slave ECUs, and receives an address acquisition request command having the manufacturing number as its temporary address from the slave ECU that has received this command. Then, the master ECU transmits this address assignment request command only to the slave ECU of the temporary address received first. This address value uses 1 to N (N is an upper limit value) in order. At this time, the slave ECU of the temporary address that has not been received by the master ECU will receive the address acquisition request command until the address assignment request command is transmitted to itself every time an address setting request command is received from the master ECU. Repeat sending.

JP 2008-99482 A

Thus, according to the power supply device described in Patent Document 1, the ECUs of the battery packs assign addresses to the ECUs.
In recent years, the adoption of technology for assigning addresses to these ECUs by the ECUs of each battery pack has been studied, but the configuration becomes complicated, such as providing a separate circuit for address setting in the power supply device, and the number of parts also increases. Concerned.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a power supply apparatus having a novel address setting configuration that can use an existing circuit.

A power supply device that solves the above-described problem is a power supply device that includes a plurality of battery packs, wherein each of the plurality of battery packs includes a control device that has a control unit that controls the battery pack, Are connected in series, a control power signal supply unit for supplying a control power signal to the series circuit, and a communication line in which the control units of the plurality of control devices are communicably connected. with bets, each of the control device to exchange information with each other via the communication line, each of the control device is located on the series circuit and the detection results own control device of the control power signal A detection unit that outputs to the control unit, and a storage unit that stores correspondence information that associates the magnitude of the control power signal detected by the detection unit and the address of the control device, the control unit, Be those the size of the serial correspondence information and the is detected by the detection unit control power signal by causing the corresponding set an address to each control device, each of the detecting portion of the plurality of control devices, the series circuit And a control switch for switching the connection between the control power signal supply unit and the control power signal supply unit, and the control units of the plurality of control devices each manage the opening / closing of the control device switch, The change-over switch is for switching the connection to the ground terminal of the series circuit, the magnitude of the control power signal is the magnitude of the current of the control power signal, The control device located on the most upstream side of the series circuit includes a control power supply detection unit that detects a control power signal from the control power signal supply unit and transmits a detection result to its own control unit. The plurality of control devices set themselves as main control devices when the control unit detects the control power signal by the control power signal supply unit in a state in which each changeover switch is closed. The control device other than the main control device detects its own switch.
A signal indicating that the magnitude of the control power signal is not substantially zero when the control power signal is detected by the unit to the main control device via the communication line, the main control device Responding to reception of a signal indicating that the magnitude of the control power signal detected by the detection unit is not substantially zero from one control device of the plurality of control devices via the communication line. The address of the control device is set, the correspondence information is transmitted to the control device, the corresponding address is set to the control device, and the changeover switch managed by the control unit of the control device is opened. The gist is to repeat this until no signal indicating that the magnitude of the control power signal detected by the detection unit is substantially zero is received from any control unit .

  According to such a configuration, the address of the control device in the series circuit is set based on the magnitude of the control power signal detected by the detection unit, for example, the magnitude of the current or voltage. Thereby, it becomes possible to theoretically specify the address of each control device constituting the power supply device.

  In addition, since the control devices of a plurality of battery packs often form a series circuit by an interlock mechanism (HVIL circuit), addresses are set using such a series circuit such as an HVIL circuit, and individually. Can be identified. That is, an increase in circuits for setting addresses can be suppressed.

Further, according to such a configuration, the setting of the main control unit is preferably performed, and the main control unit can determine the addresses of other control devices. This increases the degree of freedom in setting the address of each control device and address setting processing.

  In addition, since the address of the control device is set based on the open / close state of the changeover switch and whether or not the magnitude of the detected control power signal is substantially zero, the detected control Compared with the case based on the magnitude of the power signal, the stability related to the address setting can be improved.

Further, according to such a configuration, it is possible to specify one control unit whose control power signal is not substantially zero by closing all the changeover switches. In addition, by opening the selector switch in order from the specified control unit, in the series circuit, it is possible to sequentially set the address to the control unit connected next to the control unit to which the address is set. Become. This makes it possible to more reliably set the address of the control device in the series circuit.

  A power supply device that solves the above-described problem is a power supply device that includes a plurality of battery packs, wherein each of the plurality of battery packs includes a control device that has a control unit that controls the battery pack, Are connected in series, a control power signal supply unit for supplying a control power signal to the series circuit, and a communication line in which the control units of the plurality of control devices are communicably connected. Each of the control devices via the communication line.
Each of the control devices is detected by the detection unit and the detection unit that outputs the detection result of the control power signal to the control unit of its own control device. A storage unit that stores correspondence information that associates the magnitude of the control power signal with the address of the control device, and the control unit includes the correspondence information and the magnitude of the control power signal detected by the detection unit. The address is set to each control device by making the control correspond to each other, and the detection units of the plurality of control devices each switch to open / close the connection between the series circuit and the control power signal supply unit Connected to a switch, each control unit of the plurality of control devices manages the opening / closing of the changeover switch of its own control device, and the changeover switch opens and closes the connection with the downstream of the series circuit. The magnitude of the control power signal is the magnitude of the voltage of the control power signal, and one control device of the plurality of control devices has the control power signal opened with all changeover switches open. Is detected as a main control device, the control device other than the main control device is a signal indicating that the magnitude of the control power signal detected by the detection unit is not substantially zero. Is transmitted to the main control device via the communication line, and the main control device transmits a signal indicating that the magnitude of the control power signal is not substantially zero to control one of the plurality of control devices. In response to receiving from the control unit of the apparatus via the communication line, the address of the control apparatus is set, the correspondence information is transmitted to the control apparatus to set the address corresponding to the control apparatus, and Control equipment The control switch of the control unit is closed so that the control switch is closed until no signal indicating that the magnitude of the control power signal is not substantially zero is received from any control device. To do.

  According to such a configuration, it is possible to specify one control unit in which the magnitude of the control power signal is not substantially zero by opening all the changeover switches. In addition, by closing the selector switch in order from the specified control unit, in the series circuit, it is possible to sequentially set the address to the control unit connected next to the control unit to which the address is set. Become. This makes it possible to more reliably set the address of the control device in the series circuit.

  A power supply device that solves the above-described problem is a power supply device that includes a plurality of battery packs, wherein each of the plurality of battery packs includes a control device that has a control unit that controls the battery pack, Are electrically connected in series, and a control power signal supply unit that supplies a control power signal to the series circuit, each of the control devices being on the series circuit and for the control A detection unit that outputs the detection result of the power signal to the control unit of its own control device, and a storage unit that stores correspondence information that correlates the magnitude of the control power signal detected by the detection unit and the address of the control device And an outflow circuit that causes a predetermined amount of current to flow out of the series circuit downstream of the detection unit, and the control device uses the predetermined amount from the current supplied from upstream on the series circuit. The outflowed current is output downstream on the series circuit, and the detection unit detects the magnitude of the control power signal input from the series circuit as the magnitude of the control power signal, and The gist is that the control unit sets an address in each control device by associating the correspondence information with the magnitude of the control power signal detected by the detection unit.

  According to such a configuration, each time the control power signal flowing through the series circuit passes through the detection unit, the current value sequentially decreases through the outflow circuit, so the detection unit of each battery pack detects a different current value. It becomes like this. As a result, the address of the control device can be set based on the detected current.

  A power supply device that solves the above-described problem is a power supply device that includes a plurality of battery packs, wherein each of the plurality of battery packs includes a control device that has a control unit that controls the battery pack, Are electrically connected in series, and a control power signal supply unit that supplies a control power signal to the series circuit, each of the control devices being on the series circuit and for the control A detection unit that outputs a detection result of the power signal to a control unit of its own control device; a magnitude of the control power signal detected by the detection unit;
A storage unit that stores correspondence information that correlates the memory, and a resistor circuit that is connected downstream of the detection unit on the series circuit and drops a voltage, and each of the detection units is provided on the series circuit with the resistance circuit. Are connected in series, and the control device outputs a voltage dropped in the resistance circuit from a voltage supplied from the upstream on the series circuit to the downstream on the series circuit, and each of the detection units is , Detecting the magnitude of the voltage of the control power signal applied from the series circuit as the magnitude of the control power signal, and the control unit detects the correspondence information and the control power signal detected by the detection unit The gist is to set an address to each control device by corresponding to the size of.

  According to such a configuration, the voltage of the control power signal flowing through the series circuit is stepped down sequentially through the resistance circuit of each detection unit, so that the detection unit of each battery pack detects a different voltage. As a result, the address of the control device can be set based on the detected voltage.

As a preferred configuration, the series circuit is connected in series with a safety switch that closes the circuit based on the fact that power can be supplied from the power supply device.
Usually, such a power supply device is provided with a series circuit that connects a safety circuit of each battery pack and a detection unit that detects the state of the circuit in series via all battery packs. According to such a configuration, such a series circuit can be shared for setting the address of the control device. This makes it possible to set the address of the battery pack control device even in the conventional power supply device.

  According to this power supply apparatus, an address can be set by a new address setting configuration that can use an existing circuit.

The block diagram which shows the schematic structure about 1st Embodiment which actualized the power supply device. The circuit diagram which shows the structure of the series circuit formed by ECU of each battery pack in the embodiment. The graph which shows typically the value (size) of the electric current detected by the detection part of each battery pack in the embodiment. The circuit diagram which shows the structure of the series circuit formed by ECU of each battery pack about 2nd Embodiment which actualized the power supply device. The graph which shows typically the value (size) of the voltage detected by the detection part of each battery pack in the embodiment. The circuit diagram which shows the structure of the serial circuit formed by ECU of each battery pack about 3rd Embodiment which actualized the power supply device. The flowchart which shows the outline of the process which sets an address to ECU in the battery pack in the embodiment. The flowchart which shows the process which sets an address to ECU in each battery pack of the embodiment. The circuit diagram which shows the structure of the serial circuit formed by ECU of each battery pack about 4th Embodiment which actualized the power supply device. The flowchart which shows the process which sets an address to ECU in each battery pack of the embodiment.

(First embodiment)
Hereinafter, a first embodiment in which the power supply device is embodied will be described. In the present embodiment, the power supply device will be described as being mounted on a vehicle such as a hybrid vehicle or an electric vehicle.

  As shown in FIG. 1, the power supply device includes first to fourth battery packs 11 a to 11 d. The first to fourth battery packs 11a to 11d include first to fourth battery stacks 12a to 12d, respectively.

  Among the first to fourth battery packs 11a to 11d, the first battery stack 12a and the fourth battery stack 12d are connected in series via the power wiring 14a, and the second battery stack 12b and the third battery stack are connected. 12c is connected in series via the power wiring 14b. Further, the first battery stack 12a and the fourth battery stack 12d, and the second battery stack 12b and the third battery stack 12c have a positive electrode connected to the power wiring 13a and a negative electrode connected to the power wiring 13b. Are connected in parallel. The positive power wiring 13a and the negative power wiring 13b are connected to the vehicle, and are connected to a high voltage device including an inverter (not shown) or a high voltage device including a DC / DC converter via a switch (not shown). Connected.

  The first to fourth battery stacks 12a to 12d have the same configuration, and are configured by connecting a plurality of battery modules to which a single battery or a plurality of single batteries made of a nickel hydride storage battery or the like are connected. Hereinafter, when the first to fourth battery stacks 12a to 12d are described without being distinguished from each other, the battery stack 12 is simply described.

  The first to fourth battery packs 11a to 11d include first to fourth ECUs 15a to 15d as control devices. Each of the first to fourth ECUs 15a to 15d is configured mainly with a microcomputer having a calculation unit, a storage unit, and the like. Each of the ECUs 15a to 15d performs various information processing based on various data and programs stored in the storage unit or the like, thereby determining whether charging / discharging is permitted or not, for example. In the present embodiment, the storage unit stores (holds) a program for setting the address of each ECU and various types of information. In each ECU 15a to 15d, along with a determination as to whether charging / discharging is permitted or not, Processing for setting an address in each ECU is performed. In addition, by holding the set address in a non-volatile storage unit, etc., it is possible to omit the process of setting the address thereafter, or to compare and verify the processing result by the process of setting the address to be performed as appropriate. Yes.

  1st-4th ECU15a-15d performs abnormality determination, such as charging / discharging of 1st-4th battery stack 12a-12d, management of a battery state, a short circuit, etc., for charge / discharge, management of a battery state Illustration and description of the circuit and the like are omitted. Hereinafter, when the first to fourth ECUs 15a to 15d are described without being distinguished from each other, they are simply described as the ECU 15.

  The first to fourth ECUs 15 a to 15 d constitute the series circuit 17 by being connected by control wirings 31 to 34 therebetween. The series circuit 17 is interlocked with the attachment and removal of the cover of the battery pack, the service plug, and the cover on the high-voltage device side in the middle of the control wiring 31 that connects the first ECU 15a and the second ECU 15b. Is provided with a safety switch 16 as a safety switch. Such a safety switch may be two or more instead of one. The safety switch 16 is, for example, a switch that opens when the cover of the second battery pack 11b is removed. When the cover is removed, the series circuit 17 connecting the first to fourth ECUs 15a to 15d is shut off. On the contrary, if it is normal (when the cover is normally attached, etc.), the safety switch 16 is closed and the series circuit 17 is connected. In the present embodiment, the first to fourth ECUs 15a to 15d have the same configuration from the viewpoint of ease of manufacture. However, it has a configuration in which some of its own circuits do not function by changing the connection state for each ECU 15.

  By including the safety switch 16 in the circuit, the series circuit 17 can be used as an interlock mechanism (HVIL circuit) required for the power supply device. Further, by using the series circuit 17 for the address setting process and the interlock mechanism, the complexity of the circuit and the cost increase can be suppressed.

  The first ECU 15a includes a control power signal supply unit 30a that supplies a control power signal, a control power supply detection unit 21a, a first detection unit 26a, and a control unit 23a. The control power signal supply unit 30a is a power source that outputs a control power signal, and is connected to the second ECU 15b via the control power source detection unit 21a. Each of the control power detection unit 21a and the first detection unit 26a includes a current detector (for example, a current detector 22a) that detects the current of the control power signal. The control unit 23a determines the open / close state of the safety switch 16, sets the address of the first ECU 15a, and the like based on the current detection results by the control power supply detection unit 21a and the first detection unit 26a. The control power signal supply unit 30 a, the control power supply detection unit 21 a, and the first detection unit 26 a constitute a part of the series circuit 17.

  The first detection unit 26a is connected to the ground terminal 35a via a constant current source 25a (see FIG. 2) whose current amount is set to a limit current value “I2a” (see FIG. 2). . The first detection unit 26a can flow the current of the limited current value “I2a” from the constant current source 25a connected downstream of the current detector 22a to the ground terminal 35a. In other words, the constant current source 25a as an outflow circuit that causes the limited current value “I2a” to flow out from the series circuit 17 as a predetermined amount of current is connected downstream of the first detection unit 26a.

  The second ECU 15b includes a control power signal supply unit 30b, a control power supply detection unit 21b, a second detection unit 26b, and a control unit 23b. The control power signal supply unit 30b is configured not to function by being connected to the control power supply detection unit 21b whose output end is open. Each of the control power detection unit 21b and the second detection unit 26b includes a current detector (for example, a current detector 22b) that detects the current of the control power signal, and the control unit 23b includes the control power detection unit 21b. And based on the detection result by the 2nd detection part 26b, determination of the opening / closing state of the safety switch 16, the setting of the address of 2nd ECU15b, etc. are performed. The second detection unit 26 b constitutes a part of the series circuit 17.

  The second detection unit 26b is connected to the ground terminal 35b via a constant current source 25b (see FIG. 2) in which the current amount is set to a limit current value “I2b” (see FIG. 2). . The second detector 26b is configured to allow the current of the limited current value “I2b” to flow out to the ground terminal 35b from the constant current source 25b connected downstream of the current detector 22b. In other words, the constant current source 25b as an outflow circuit that allows the limited current value “I2b” to flow out from the series circuit 17 as a predetermined amount of current is connected downstream of the second detection unit 26b.

  The third ECU 15c includes a control power signal supply unit 30c, a control power supply detection unit 21c, a third detection unit 26c, and a control unit 23c. The control power signal supply unit 30c is configured not to function by being connected to the control power supply detection unit 21c whose output end is open. Each of the control power detection unit 21c and the third detection unit 26c includes a current detector (for example, a current detector 22c) that detects the current of the control power signal, and the control unit 23c includes the control power detection unit 21c. And based on the detection result by the 3rd detection part 26c, determination of the opening / closing state of the safety switch 16, the setting of the address of 3rd ECU15c, etc. are performed. The third detection unit 26 c constitutes a part of the series circuit 17.

  The third detection unit 26c is connected to the ground terminal 35c via a constant current source 25c (see FIG. 2) whose current amount is set to a limit current value “I2c” (see FIG. 2). . The third detection unit 26c can flow the current of the limited current value “I2c” from the constant current source 25c connected downstream of the current detector 22c to the ground terminal 35c. In other words, the constant current source 25c as an outflow circuit for flowing the limited current value “I2c” as a predetermined amount of current from the series circuit 17 is connected downstream of the third detection unit 26c.

  The fourth ECU 15d includes a control power signal supply unit 30d, a control power supply detection unit 21d, a fourth detection unit 26d, and a control unit 23d. The control power signal supply unit 30d is configured not to function by being connected to the control power detection unit 21d whose output end is open. Each of the control power detection unit 21d and the fourth detection unit 26d includes a current detector (for example, a current detector 22d) that detects the current of the control power signal, and the control unit 23d includes the control power detection unit 21d. And based on the detection result by the 4th detection part 26d, determination of the opening / closing state of the safety switch 16, the setting of the address of 4th ECU15d, etc. are performed. The fourth detection unit 26 d constitutes a part of the series circuit 17.

  The fourth detection unit 26d is connected to the ground terminal 35d via a constant current source 25d (see FIG. 2) whose current amount is set to a limit current value “I2d” (see FIG. 2). . The fourth detector 26d is configured to allow a current having a limited current value “I2d” to flow out to the ground terminal 35d from a constant current source 25d connected downstream of the current detector 22d. In other words, the constant current source 25d as an outflow circuit for flowing out the limited current value “I2d” as a predetermined amount of current from the series circuit 17 is connected downstream of the fourth detection unit 26d.

  That is, the control power signal supply unit 30a of the first ECU 15a, the control power supply detection unit 21a of the first ECU 15a, the second detection unit 26b of the second ECU 15b, and the third detection unit 26c of the third ECU 15c. The series circuit 17 is configured by connecting the fourth detection unit 26d of the fourth ECU 15d and the first detection unit 26a of the first ECU 15a in series. In this embodiment, in the series circuit 17, the control power signal supply unit 30a side is referred to as upstream, and the opposite side is referred to as downstream.

  The control units 23 a to 23 d of the first to fourth ECUs 15 a to 15 d are connected to each other via a communication line 18, and can transmit and receive various types of information to each other via the communication line 18. The communication line 18 provides a communication line that can be used for, for example, serial communication or CAN communication. The communication method may be a multi-master method or a master-slave method. In the present embodiment, among these, the first ECU 15a serves as a main ECU (main control device) in the network and manages the power supply device in an integrated manner. For example, communication between the power supply device and the vehicle is performed via the first ECU 15a. In addition, when it demonstrates without distinguishing the control parts 23a-23d of 1st-4th ECU15a-15d, it demonstrates as the control part 23 only.

Next, the configuration of the series circuit 17 will be described in detail.
As shown in FIG. 2, in the first ECU 15a, the series circuit 17 is configured by a series connection of a control power signal supply unit 30a, a constant current source 24 for preventing overcurrent, and a control power supply detection unit 21a. Yes. The constant current source 24 prevents the overcurrent from flowing through the series circuit 17 by setting the current value “I1” of the passing current to be equal to or less than the set limit current value. The control power supply detection unit 21a is a well-known circuit that detects a current, and outputs a signal indicating the detected current value “Iα1” to the control unit 23a. That is, the control power signal output from the control power signal supply unit 30a passes through the constant current source 24 and is output from the control power supply detection unit 21a. The output of the control power supply detection unit 21a is connected to the second ECU 15b via the control wiring 31 including the safety switch 16.

  In the present embodiment, the current flowing through the series circuit 17 is any one of the limit current value of the constant current source 24 and the total value (= I2a + I2b + I2c + I2d) of the limit current values “I2a” to “I2d” of the constant current sources 25a to 25d. It is configured to be a small value. In addition, since the limiting current value of the constant current source 24 is not less than the total value of the limiting current values “I2a” to “I2d” that the constant current sources 25a to 25d can flow, The value of the current value “I1” is “I2a + I2b + I2c + I2d”.

Since the safety switch 16 is normally closed, the following description will be made assuming that the safety switch 16 is closed.
In the second ECU 15b, the series circuit 17 has a second detection unit 26b connected in series. A control wiring 31 from the first ECU 15a and a control wiring 32 to the third ECU 15c are connected to the second detection unit 26b. The second detection unit 26b is a well-known circuit that detects current, and outputs a signal indicating the current value “Iβ2” detected by the current detector 22b in the circuit to the control unit 23b. For example, when the current of the current value “I1” is supplied from the first ECU 15a, the second detection unit 26b detects the current value “Iβ2” corresponding to the current value “I1”. In the second detection unit 26b, the constant current source 25b connected to the ground terminal 35b and the control wiring 32 to the third ECU 15c are connected in parallel to the output of the circuit for detecting current. Here, since the current value “I1” of the current supplied to the second ECU 15b is larger than the limit current value “I2b”, the current of the limit current value “I2b” passes through the constant current source 25b, and the series circuit The current of the control power signal flowing through 17 is reduced by the limit current value “I2b”. Specifically, when the current of the current value “I1” is supplied to the second ECU 15b, the current value of the current output from the second ECU 15b is “I1-I2b”.

  In the third ECU 15c, the series circuit 17 has a third detection unit 26c connected in series. A control wiring 32 from the second ECU 15b and a control wiring 33 to the fourth ECU 15d are connected to the third detection unit 26c. The third detection unit 26c is a known circuit that detects current, and outputs a signal indicating the current value “Iβ3” detected by the current detector 22c in the circuit to the control unit 23c. For example, when the current of the current value “I1-I2b” is supplied from the second ECU 15b, the third detection unit 26c detects the current value “Iβ3” corresponding to the current value “I1-I2b”. In the third detection unit 26c, a constant current source 25c connected to the ground terminal 35c and a control wiring 33 to the fourth ECU 15d are connected in parallel to an output of a circuit for detecting a current. Here, since the current value “I1−I2b” of the current supplied to the third ECU 15c is larger than the limit current value “I2c”, the current of the limit current value “I2c” passes through the constant current source 25c. The current of the control power signal flowing through the series circuit 17 is decreased by the limit current value “I2c”. Specifically, when the current of the current value “I1-I2b” is supplied to the third ECU 15c, the current value of the current output from the third ECU 15c is “I1-I2b-I2c”.

  In the fourth ECU 15d, the series circuit 17 has a fourth detection unit 26d connected in series. A control wiring 33 from the third ECU 15c and a control wiring 34 to the first ECU 15a are connected to the fourth detection unit 26d. The fourth detection unit 26d is a well-known circuit that detects current, and outputs a signal indicating the current value “Iβ4” detected by the current detector 22d in the circuit to the control unit 23d. For example, when the current of the current value “I1-I2b-I2c” is supplied from the third ECU 15c, the fourth detection unit 26d uses the current value “Iβ4” corresponding to the current value “I1-I2b-I2c”. Is detected. In the fourth detection unit 26d, the constant current source 25d connected to the ground terminal 35d and the control wiring 34 to the first ECU 15a are connected in parallel to the output of the circuit for detecting the current. Here, since the current value “I1-I2b-I2c” of the current supplied to the fourth ECU 15d is larger than the limit current value “I2d”, a current of the limit current value “I2d” passes through the constant current source 25d. Then, the current of the control power signal flowing through the series circuit 17 is decreased by the limit current value “I2d”. Specifically, when the current value “I1-I2b-I2c” is supplied to the fourth ECU 15d, the current value of the current output from the fourth ECU 15d is “I1-I2b-I2c-I2d”. Become.

  In the first ECU 15a, the series circuit 17 includes the first detection unit 26a connected in series. A control wiring 34 from the fourth ECU 15d is connected to the first detection unit 26a. The first detection unit 26a is a known circuit that detects current, and outputs a signal indicating the current value “Iβ1” detected by the current detector 22a in the circuit to the control unit 23a. For example, when the current of the current value “I1-I2b-I2c-I2d” is supplied from the fourth ECU 15d, the first detection unit 26a uses the current corresponding to the current value “I1-I2b-I2c-I2d”. The value “Iβ1” is detected. In the first detection unit 26a, a constant current source 25a connected to the ground terminal 35a is connected to an output of a circuit that detects current. Here, since the current value “I1-I2b-I2c-I2d” of the current supplied to the first ECU 15a is the same as the limit current value “I2a”, the constant current source 25a has the limit current value “I2a”. And the current of the control power signal flowing through the series circuit 17 is set to the limit current value “I2a”. Specifically, when the current of the current value “I1-I2b-I2c-I2d” is supplied to the first ECU 15a, the current value of the current output to the ground terminal 35a of the first ECU 15a is “I2a”. is there. That is, the current value “I2a” and the current value “I1−I2b−I2c−I2d” are equal to each other.

  That is, in this embodiment, the current value “I1” of the current that flows from the control power signal supply unit 30a to the series circuit 17 is the sum of the current values of the currents that the four constant current sources 25a to 25d flow, that is, “I2b + I2c + I2d + I2a”. Is.

  As shown in FIG. 3, the current value “Iβ2” detected by the second detection unit 26b is the same as the current value “Iα1” detected by the control power supply detection unit 21a, and is “I2b + I2c + I2d + I2a” (= I1). It becomes. The current value “Iβ3” detected by the third detection unit 26c is “I1−I2b”, that is, “I2c + I2d + I2a”. The current value “Iβ4” detected by the fourth detection unit 26d is “I1−I2b−I2c”, that is, “I2d + I2a”. The current value “Iβ1” detected by the first detection unit 26a is “I1-I2b-I2c-I2d”, that is, “I2a”.

  In addition, in the storage units of the first to fourth ECUs 15a to 15d, in addition to the information on the connection modes of the battery packs 11a to 11d and the ECUs 15a to 15d in the power supply device, the magnitude of the detected control power signal and each ECU 15a Correspondence information for associating addresses of ˜15d is stored. In this embodiment, the magnitude of the control power signal is the magnitude of the current of the control power signal. Therefore, specifically, in the correspondence information, when the detected current value is “I2b + I2c + I2d + I2a”, an address indicating the second ECU 15b is associated, and when the detected current value is “I2c + I2d + I2a” The address indicating the ECU 15c is set to correspond. Further, in the correspondence information, when the detected current value is “I2d + I2a”, the address indicating the fourth ECU 15d is associated, and when the detected current value is “I2a”, the address indicating the first ECU 15a. Is set to be supported.

  And in each ECU15a-15d, each control part 23 reads the said correspondence information from the memory | storage part of the ECU15, and collates the electric current value read by detection part 26a-26d, and correspondence information, and its own ECU15. Set the address to.

Thereby, the power supply device of this embodiment can set logically the address of several ECU.
As described above, according to the power supply device of the present embodiment, the effects listed below can be obtained.

  (1) The addresses of the ECUs 15a to 15d are set based on the magnitude of the control power signal detected by the detectors 26a to 26d, that is, the magnitude of the current. Thereby, it becomes possible to theoretically set the addresses of the ECUs 15a to 15d constituting the power supply apparatus.

  Moreover, since the control parts 23a-23d comprise the series circuit 17 by the interlock mechanism (HVIL circuit), the some battery packs 11a-11d can set an address using the series circuit by this HVIL circuit. It becomes like this. That is, the power supply apparatus can identify each ECU individually if there is a series circuit such as an HVIL circuit that connects the ECUs 15 in series. In addition, an increase in the number of circuits for such identification (address setting) can be suppressed.

  (2) Each time the control power signal flowing through the series circuit 17 passes through the detection units 26a to 26d, the current value sequentially decreases through the constant current sources 25a to 25d as the outflow circuits, so that the battery packs 11a to 11d The detection units 26a to 26d detect different current values. Thereby, the address of each ECU15a-15d can be set based on the detected electric current value.

  (3) Each of the control units 23 can acquire information from the other battery packs 11a to 11d through the communication line 18, and charge / discharge in the battery packs 11a to 11d is performed based on the information thus acquired. It can manage suitably.

  (4) When the safety switch 16 is provided in the middle of the series circuit 17, the current cannot be detected by each of the detection units 26a to 26d that the series circuit 17 is cut off because the safety switch 16 is opened. All battery packs can be detected based on the fact that Thereby, the safety | security of a power supply device comes to be maintained.

(Second Embodiment)
A second embodiment in which the power supply device is embodied will be described.
Although the present embodiment is configured to set the address of each ECU using the magnitude of the voltage as the magnitude of the control power signal, it differs from the configuration of setting the address of each ECU in the first embodiment. The other configurations are the same. Therefore, in the following, the configuration that is different from the first embodiment will be mainly described. The same reference numerals are used for the same configurations as those in the first embodiment, and the detailed description thereof will be given for convenience of description. Omit.

  As shown in FIG. 4, the power supply device of the present embodiment includes first to fourth ECUs 46 a to 46 d in the first to fourth battery packs 11 a to 11 d. The first to fourth ECUs 46 a to 46 d include first to fourth detection units 40 a to 40 d that detect control power signals supplied from the control power signal supply unit 431. The 1st-4th detection parts 40a-40d comprise the series circuit 47 because they are connected in series by control wiring 43a-43d. The series circuit 47 includes the safety switch 16 in the middle of the control wiring 43a that connects the first ECU 46a and the second ECU 46b. In the present embodiment, when the series circuit 47 is shared with the interlock mechanism, the position of the safety switch 16 is limited to the above-described position. Moreover, the voltage Vα2 to Vα4 detected by the control power signal supply units 432 to 434, the control power supply detection units 41b to 41d, and the control power supply detection units 41b to 41d of the second to fourth ECUs 46b to 46d are used. Not. Further, description of the ground terminals 45b to 45d of the second to fourth ECUs 46b to 46d is omitted.

  In the first ECU 46a, the series circuit 47 includes a series connection of a control power signal supply unit 431 and a control power supply detection unit 41a. The control power supply detection unit 41a outputs a signal indicating the voltage value “Vα1” of the voltage applied as the magnitude of the control power signal output from the control power signal supply unit 431 to the control unit. The control power signal output from the control power signal supply unit 431 is output from the control power supply detection unit 41a to the second ECU 46b via the control wiring 43a including the safety switch 16.

  In the second ECU 46b, the series circuit 47 is connected to the second detection unit 40b in series. A control wiring 43a from the first ECU 46a and a control wiring 43b to the third ECU 46c are connected to the second detection unit 40b. The second detection unit 40b outputs a signal indicating the voltage value “Vβ2” of the voltage applied as the magnitude of the input control power signal to the control unit. For example, when the voltage of the voltage value “Vα1” is supplied from the first ECU 46a, the voltage value “Vβ2” of the second detection unit 40b is the same value as the voltage value “Vα1”. In the second detection unit 40b, a resistor rb is connected in series between the output of the circuit where the voltage is detected and the control wiring 43b to the third ECU 46c. The voltage of the control power signal output from the second ECU 46b in the series circuit 47 is reduced by the voltage drop due to the resistor rb. That is, the resistor rb as a resistor circuit for dropping the voltage is connected in series downstream of the second detector 40b on the series circuit 47.

  In the third ECU 46c, the third detection unit 40c is connected in series to the series circuit 47. A control wiring 43b from the second ECU 46b and a control wiring 43c to the fourth ECU 46d are connected to the third detection unit 40c. The third detection unit 40c causes the control unit to output a signal indicating the voltage value “Vβ3” of the voltage applied as the magnitude of the input control power signal. For example, the voltage value “Vβ3” of the third detection unit 40c is a value obtained by dropping the voltage by the resistor rb from the voltage value “Vβ2” detected by the second ECU 46b. In the third detection unit 40c, a resistor rb is connected in series between the output of the circuit where the voltage is detected and the control wiring 43c to the fourth ECU 46d. In the series circuit 47, the voltage of the control power signal output from the third ECU 46c further decreases by the voltage drop due to the resistor rb. That is, a resistor rb as a resistance circuit that drops the voltage downstream of the third detection unit 40c on the series circuit 47 is connected in series.

  In the fourth ECU 46d, the series circuit 47 is connected to the fourth detection unit 40d in series. A control wiring 43c from the third ECU 46c and a control wiring 43d to the first ECU 46a are connected to the fourth detection unit 40d. The fourth detection unit 40d causes the control unit to output a signal indicating the voltage value “Vβ4” of the voltage applied as the magnitude of the input control power signal. For example, the voltage value “Vβ4” of the fourth detection unit 40d is a value obtained by dropping the voltage by the resistor rb from the voltage value “Vβ3” detected by the third ECU 46c. In the fourth detection unit 40d, a resistor rb is connected in series between the output of the circuit where the voltage is detected and the control wiring 43d to the first ECU 46a. The voltage of the control power signal output from the fourth ECU 46d in the series circuit 47 further decreases by the amount of voltage drop due to the resistor rb. That is, a resistor rb as a resistance circuit that drops the voltage downstream of the fourth detection unit 40d on the series circuit 47 is connected in series.

  In the first ECU 46a, the first detection unit 40a is connected in series to the series circuit 47. A control wiring 43d from the fourth ECU 46d and a ground terminal 45a are connected to the first detection unit 40a. The first detection unit 40a causes the control unit to output a signal indicating the voltage value “Vβ1” of the voltage applied as the magnitude of the input control power signal. For example, the voltage value “Vβ1” of the first detection unit 40a is a value obtained by dropping the voltage by the resistor rb from the voltage value “Vβ4” detected by the fourth ECU 46d. That is, a resistor rb as a resistor circuit that drops the voltage downstream of the first detection unit 40a on the series circuit 47 is connected in series.

  That is, the series circuit 47 includes four resistors rb between the control power signal supply unit 431 of the first ECU 46a and the ground terminal 45a of the first ECU 46a. In the present embodiment, the resistance values of the four resistors rb are the same. Therefore, the voltage value “Vα1” of the voltage of the control power signal output from the control power signal supply unit 431 is divided into four by each resistor rb.

  As shown in FIG. 5, the voltage value “Vβ2” of the second detection unit 40b is “Vα1 × (4/4)”, and the voltage value “Vβ3” of the third detection unit 40c is “Vα1 × (3 / 4) ”, the voltage value“ Vβ4 ”of the fourth detection unit 40d is“ Vα1 × (2/4) ”, and the voltage value“ Vβ1 ”of the first detection unit 40a is“ Vα1 × (1/4) ”. "

  The first to fourth ECUs 46a to 46d each have a storage unit (not shown), and the storage unit detects the magnitude of the detected control power signal (the voltage value “Vβ1” which is the detection result in the present embodiment). To “Vβ4”) and correspondence information that correlates the addresses of the ECUs. In the present embodiment, the magnitude of the control power signal is the magnitude of the voltage of the control power signal. Specifically, in the correspondence information, when the detected voltage value is “Vα1 × (4/4)”, the address indicating the second ECU 46b is associated, and the detected voltage value is “Vα1 × (( 3/4) ”, it is set that the address indicating the third ECU 46c is associated. In the correspondence information, when the detected voltage value is “Vα1 × (2/4)”, an address indicating the fourth ECU 46d is associated, and the detected voltage value is “Vα1 × (1/4”. ) ", It is set that the address indicating the first ECU 46a is associated.

  And in each ECU46a-46d, each control part 23 reads the said correspondence information from the memory | storage part of the ECU, and collates the voltage value read by the detection parts 40a-40d with correspondence information, and own ECU. Set the address to.

As described above, according to the power supply device of the present embodiment, in addition to the effect (3) described in the first embodiment, the effects listed below can be obtained.
(5) The addresses of the ECUs 46a to 46d can be set based on the magnitude of the control power signal detected by the detectors 40a to 40d, that is, the voltage.

  In addition, since the control units of the plurality of battery packs 11a to 11d constitute the series circuit 47 by the interlock mechanism (HVIL circuit), the addresses can be set using the series circuit 47 by such an HVIL circuit. Become. In other words, the power supply apparatus can identify each ECU individually if there is a series circuit such as an HVIL circuit that connects the ECUs 46a to 46d in series. In addition, an increase in the number of circuits for such identification (address setting) can be suppressed.

  (6) Since the voltage of the control power signal flowing through the series circuit 47 is stepped down sequentially through the resistor rb as the resistance circuit of each of the detection units 40a to 40d, the detection units 40a to 40d of the battery packs 11a to 11d are respectively Different voltage will be detected. As a result, the addresses of the ECUs 46a to 46d can be set based on the detected voltage value.

  (7) Since the safety switch 16 is provided in the middle of the control wiring 43a, the fact that the series circuit 47 is shut off because the safety switch 16 is opened can be detected in a state where the voltage cannot be detected through the detection units 40a to 40d. All battery packs can be detected based on a certain thing. Thereby, the safety | security of a power supply device comes to be maintained.

(Third embodiment)
A third embodiment in which the power supply device is embodied will be described.
The present embodiment is configured to set the address of each ECU based on whether or not the current of the control power signal is substantially zero. The configuration to set the address of each ECU in the first embodiment However, the other configurations are the same. Therefore, in the following, the configuration that is different from the first embodiment will be mainly described. The same reference numerals are used for the same configurations as those in the first embodiment, and the detailed description thereof will be given for convenience of description. Omit.

  As shown in FIG. 6, the power supply device of the present embodiment includes first to fourth ECUs 56 a to 56 d as control devices in the first to fourth battery packs 11 a to 11 d. The first to fourth ECUs 56 a to 56 d include first to fourth detection units 50 a to 50 d that detect the control power signal supplied from the control power signal supply unit 531. The first to fourth detection units 50a to 50d include known current detectors 52a to 52d, and output current values “Iβ21” to “Iβ24” detected from the current to the control units of the corresponding ECUs 56a to 56d. . The 1st-4th detection parts 50a-50d are connected in series by control wiring 53a-53d, and comprise the series circuit 57. FIG. The series circuit 57 includes the safety switch 16 in the middle of the control wiring 53a that connects the first ECU 56a and the second ECU 56b. In the present embodiment, the first to fourth ECUs 56a to 56d determine whether or not the detected current values “Iβ21” to “Iβ24” as the magnitude of the control power signal are substantially zero. A threshold value is set. This threshold is a value that defines a range in which the current value can be regarded as “0”, and can be determined theoretically, experimentally, or by experience, and a value that is less likely to be misidentified due to noise or the like can be selected. The current values “Iα2” detected by the control power signal supply units 532 to 534, the control power supply detection units 51b to 51d, and the control power supply detection units 51b to 51d of the second to fourth ECUs 56b to 56d “Iα4” is not used.

  In the first ECU 56a (ECU located at the most upstream) as the main control device, the series circuit 57 is configured by a series connection of a control power signal supply unit 531, a constant current source 58, and a control power source detection unit 51a. . The control power signal supply unit 531, the constant current source 58, and the control power supply detection unit 51a are the same as the control power signal supply unit 30a, the constant current source 24, and the control power supply detection unit 21a of the first embodiment, respectively. It has a configuration. The control power supply detection unit 51a outputs a signal indicating the detected current value “Iα11” to the control unit. The control power signal output from the control power signal supply unit 531 passes through the constant current source 58, and is output from the control power supply detection unit 51a to the second ECU 56b via the control wiring 53a including the safety switch 16. The

  In the second ECU 56b, the series circuit 57 has a second detection unit 50b connected in series. A control wiring 53a from the first ECU 56a and a control wiring 53b to the third ECU 56c are connected to the second detection unit 50b. The second detection unit 50b outputs a signal indicating the detected current value “Iβ22” to the control unit. Thus, the control unit can determine whether or not the input current value “Iβ22” is substantially zero. The second detection unit 50b has a ground terminal 55b connected to the output of the circuit for detecting the current via a changeover switch 54b for switching between opening and closing of the circuit so as to be parallel to the control wiring 53b to the third ECU 56c. Yes. Opening and closing of the changeover switch 54b is controlled by the control unit. When the changeover switch 54b is opened, a control power signal is output to the control wiring 53b from the second detection unit 50b to the third ECU 56c. On the other hand, when the changeover switch 54b is closed, the second detection unit 50b is connected to the ground terminal 55b and flows out the current of the current value “Iβ22”, and the control wiring 53b to the third ECU 56c has a control line 53b. The power signal is not output. The second detection unit 50b receives a control power signal from the first ECU 56a on the condition that any one of the first to fourth detection units 50a to 50d is connected to the ground terminals 55a to 55d. Is supplied, the current value “Iβ22” is detected.

  In the third ECU 56c, the third detection unit 50c is connected in series to the series circuit 57. A control wiring 53b from the second ECU 56b and a control wiring 53c to the fourth ECU 56d are connected to the third detection unit 50c. The third detection unit 50c outputs a signal indicating the detected current value “Iβ23” to the control unit. Thus, the control unit can determine whether or not the input current value “Iβ23” is substantially zero. The third detection unit 50c has a ground terminal 55c connected to the output of the circuit for detecting the current via a changeover switch 54c for switching between opening and closing of the circuit so as to be parallel to the control wiring 53c to the fourth ECU 56d. Yes. Opening and closing of the changeover switch 54c is controlled by the control unit. When the changeover switch 54c is opened, a control power signal is output to the control wiring 53c from the third detection unit 50c to the fourth ECU 56d. On the other hand, when the changeover switch 54c is closed, the third detection unit 50c is connected to the ground terminal 55c and flows out the current of the current value “Iβ23”, and the control wiring 53c to the fourth ECU 56d is connected to the control wiring 53c. The power signal is not output. That is, in the third detection unit 50c, the change-over switch 54b of the second ECU 56b is opened, and any one of the first, third, and fourth detection units 50a, 50c, and 50d is connected to the ground terminals 55a and 55c. , 55d, the current value “Iβ23” is detected. If the changeover switch 54b of the second ECU 56b is closed, the current value “Iβ23” is not detected.

  In the fourth ECU 56d, the fourth detection unit 50d is connected in series to the series circuit 57. A control wiring 53c from the third ECU 56c and a control wiring 53d to the first ECU 56a are connected to the fourth detection unit 50d. The fourth detection unit 50d outputs a signal indicating the detected current value “Iβ24” to the control unit. Thus, the control unit can determine whether or not the input current value “Iβ24” is substantially zero. In the fourth detection unit 50d, a ground terminal 55d is connected to an output of a circuit for detecting a current via a changeover switch 54d that switches between opening and closing of the circuit so as to be parallel to the control wiring 53d to the first ECU 56a. Yes. Opening and closing of the changeover switch 54d is controlled by the control unit. When the changeover switch 54d is opened, a control power signal is output from the fourth detection unit 50d to the control wiring 53d to the first ECU 56a. On the other hand, when the changeover switch 54d is closed, the fourth detection unit 50d is connected to the ground terminal 55d and flows out the current of the current value “Iβ24”, and the control wiring 53d to the first ECU 56a is connected to the control wiring 53d. The power signal is not output. That is, in the fourth detection unit 50d, the change-over switches 54c and 54d of the second and third ECUs 56b and 56c are open, and any one of the first and fourth detection units 50a and 50d is grounded. The current value “Iβ24” is detected on the condition that the terminals 55a and 55d are connected. On the other hand, the fourth detection unit 50d does not detect the current value “Iβ24” if the changeover switch 54b of the second ECU 56b or the changeover switch 54c of the third ECU 56c is closed.

  In the first ECU 56a, the first detection unit 50a is connected in series to the series circuit 57. A control wiring 53d from the fourth ECU 56d is connected to the first detection unit 50a. The first detection unit 50a outputs a signal indicating the detected current Iβ21 to the control unit. Thus, the control unit can determine whether or not the input current value “Iβ21” is substantially zero. In the first detection unit 50a, a ground terminal 55a is connected to an output of a circuit that detects current through a changeover switch 54a that switches between opening and closing of the circuit. Opening and closing of the changeover switch 54a is controlled by the control unit. And when the changeover switch 54a is opened, the output of the 1st detection part 50a is open | released. On the other hand, when the changeover switch 54a is closed, the first detection unit 50a is connected to the ground terminal 55a, and a control power signal as a current of the current value “Iβ21” flows out. That is, the first detection unit 50a is provided on condition that the changeover switches 54b to 54d of the second to fourth ECUs 56b to 56d are open and the changeover switch 54a of the first ECU 56a is closed. The current value “Iβ21” is detected. On the other hand, the first detection unit 50a does not detect the current value “Iβ21” if any one of the changeover switches 54b to 54d of the second to fourth ECUs 56b to 56d is closed.

  Next, processing for setting the address of each ECU in the present embodiment will be described. The setting of the address of each ECU is started on the condition that the address is not set or the ignition is turned on. Note that when any one ECU starts the process of setting an address, the process of setting the address by all the ECUs is started via communication or the like.

  As shown in FIG. 7, when the process of setting the address of each ECU is started, each control unit of the first to fourth ECUs 56a to 56d closes (turns on) the changeover switches 54a to 54d (see FIG. 7). 7 step S10). And each control part of 1st-4th ECU56a-56d performs the specific process of main ECU, respectively (step S11 of FIG. 7). Accordingly, one of the first to fourth ECUs 56a to 56d is specified as the main ECU, and at the same time, an address corresponding to the main ECU is set. When the address of the main ECU is set, a process of setting the address is performed in an ECU other than the main ECU in cooperation with the main ECU (step S12 in FIG. 7). And an address will be set in all the 1st-4th ECU56a-56d.

  With reference to FIG. 8, the process of setting the addresses of the ECUs 56a to 56d will be described in detail. In the following, for convenience of explanation, the case where the magnitude of the current value is not substantially zero is referred to as “detecting the current” or the like, and the case where the magnitude of the current value is substantially zero. This is described as “not detecting current”.

  In this embodiment, the address of the first ECU 56a (main ECU) is “1”, the address of the second ECU 56b is “2”, the address of the third ECU 56c is “3”, the fourth ECU It is stored that the address of the ECU 56d is “4”.

  Each control unit of the first to fourth ECUs 56a to 56d closes (turns on) the changeover switches 54a to 54d (step S20 in FIG. 8), and whether or not its own control power source detection unit has detected a current. That is, it is determined whether or not the current is substantially zero (step S21 in FIG. 8). When the changeover switches 54a to 54d are closed, only one of the control power detection units of the first to fourth ECUs 56a to 56d detects the current. In this embodiment, since the control power signal is supplied from the control power signal supply unit 531 of the first ECU 56a to the series circuit 57, the control power supply detection unit 51a of the first ECU 56a detects the current. On the other hand, the control power detection units 51b to 51d of the second to fourth ECUs 56b to 56d do not detect current. That is, the first ECU 56a determines that a current has been detected (YES in step S21 of FIG. 8), and the first ECU 56a determines that it is the main ECU and sets the address “1” (FIG. 8 step S22). Subsequently, the first ECU 56a performs a process of setting addresses of the second to fourth ECUs 56b to 56d. That is, the value for the next address is set to a number “1” larger than the issued address, here “2” (step S23 in FIG. 8), and waits for an address application signal to be received (FIG. 8). Step S24 and NO in Step S24). If it is determined that the address application signal has been received (YES in step S24 in FIG. 8), the first ECU 56a sends the address application signal to the ECU that has transmitted the address application signal, which is the first in this embodiment, the second ECU 56b. The address value “2” is returned (step S25 in FIG. 8). Then, it is determined whether the address value “2” is the number n (n = 4) of ECUs connected to the power supply device (step S26 in FIG. 8). It is determined that the address value “2” is not the number of ECUs “4” (NO in step S26 in FIG. 8), and the first ECU 56a returns to the process of step S23, and is a number that is one greater than the issued address. Then, “3” is set (step S23 in FIG. 8), and the subsequent processing is repeated in the order of the third and fourth ECUs 56c and 56d. When the address value “4” is set in the fourth ECU 56d, it is determined that the number is the same as the number of battery packs “4” (YES in step S26 in FIG. 8), and the first ECU 56a The process of setting the addresses of the ECUs 56a to 56d is terminated.

  On the other hand, in the second to fourth ECUs 56b to 56d, it is determined that no current is detected from the control power source detection units 51b to 51d (NO in step S21 of FIG. 8), and the second to fourth ECUs 56b to 56d are respectively It is determined that it is not the main ECU. And the process which sets an address by cooperation with 1st ECU56a is continued. That is, the second to fourth ECUs 56b to 56d wait for the detection units 50b to 50d to detect the current (NO in step S30 and step S30 in FIG. 8).

First, in a state where all the changeover switches 54a to 54d are closed, the current is detected only by the detection unit 50b of the second ECU 56b.
That is, the second ECU 56b determines that a current has been detected (YES in step S30 in FIG. 8), and the second ECU 56b transmits an address application signal to the first ECU 56a (step S31 in FIG. 8). Wait until the address information from the first ECU 56a is received (step S32 in FIG. 8 and NO in step S32). Since the transmitted address application signal may not be received by the first ECU 56a, the second ECU 56b repeatedly transmits the address application signal after a predetermined time interval. If it is determined that the address information has been received (YES in step S32 in FIG. 8), the second ECU 56b sets the received address information, for example, “2” as its own address and switches the address information. The switch 54b is opened (step S34 in FIG. 8), and the processing for setting the address ends.

  When the changeover switch 54b is opened, the current is detected by the detection unit 50c of the third ECU 56c. If it is determined that the current is detected by third ECU 56c (YES in step S30 in FIG. 8), third ECU 56c transmits an address application signal to first ECU 56a and receives address information corresponding thereto. (Steps S31 and S32 in FIG. 8). Then, the third ECU 56c sets the received address information, for example, “3” as its own address, and opens the changeover switch 54c (step S34 in FIG. 8), and ends the address setting process.

  Even when the changeover switch 54b is opened, the detection unit 50b of the second ECU 56b detects the current, but when the changeover switch 54b is opened, the second ECU 56b finishes the process of setting an address. .

  When the changeover switch 54c is opened, the current is detected by the detection unit 50d of the fourth ECU 56d. If it is determined that the current is detected by the fourth ECU 56d (YES in step S30 in FIG. 8), the fourth ECU 56d transmits an address application signal to the first ECU 56a and receives the corresponding address information. (Steps S31 and S32 in FIG. 8). Then, the fourth ECU 56d sets the received address information, for example, “4” as its own address, opens the changeover switch 54d (step S34 in FIG. 8), and ends the address setting process.

  Even when the changeover switch 54c is opened, the detection unit 50b of the second ECU 56b and the detection unit 50c of the third ECU 56c detect current, but the second and third points are detected when the changeover switch 54c is opened. The ECUs 56b and 56c have finished the process of setting an address.

Further, as described above, the processing for setting the address of the first ECU 56a is also terminated at this time.
Thereby, the process which sets the address in all the 1st-4th ECU56a-56d in a power supply device is complete | finished.

  According to the present embodiment, since the process of setting an address is performed based on whether or not current is detected by the detection units 50a to 50d, that is, whether or not the current is substantially zero, the process of setting an address In this case, the influence of noise or the like can be reduced.

  As described above, according to the power supply device of this embodiment, in addition to the effects (1), (3), and (4) described in the first embodiment, the effects listed below are listed. Can be obtained.

  (8) The main control device is preferably set in the first ECU 56a, and the main control device can determine the addresses of other ECUs. This increases the degree of freedom in setting the address of each ECU and address setting processing.

  Further, based on whether the changeover switches 54a to 54d are open / closed and whether or not the current values “Iβ21” to “Iβ24” as the magnitudes of the detected control power signals are substantially zero. Since the address of the ECU is set, it is possible to improve the stability related to the setting of the address as compared with the case where it is based on the detected magnitude of the control power signal.

  (9) By closing all the changeover switches 54a to 54d, it becomes possible to specify one control unit in which the magnitude of the control power signal is not substantially zero. Further, by opening the changeover switches 54a to 54d in order from the specified control unit, the series circuit 57 can set the address to the control unit connected next to the control unit to which the address is set. You can do it sequentially. This makes it possible to set the ECU address in the series circuit more reliably.

(Fourth embodiment)
A fourth embodiment in which the power supply device is embodied will be described.
The present embodiment is configured to set the address of each ECU based on whether or not the voltage of the control power signal is substantially zero. The configuration to set the address of each ECU in the first embodiment However, the other configurations are the same. Therefore, in the following, the configuration that is different from the first embodiment will be mainly described. The same reference numerals are used for the same configurations as those in the first embodiment, and the detailed description thereof will be given for convenience of description. Omit.

  As shown in FIG. 9, the power supply device of the present embodiment includes first to fourth ECUs 66 a to 66 d as control devices in the first to fourth battery packs 11 a to 11 d. The first to fourth ECUs 66 a to 66 d include first to fourth detection units 60 a to 60 d that detect the control power signal supplied from the control power signal supply unit 634. The first to fourth detection units 60a to 60d output the voltage values “Vβ11” to “Vβ14” to the corresponding control units of the ECUs 66a to 66d. The 1st-4th detection parts 60a-60d are connected in series by the control wiring 63a-63d, and comprise the series circuit 67. FIG. The series circuit 67 includes the safety switch 16 in the middle of the control wiring 63d that connects the fourth ECU 66d and the first ECU 66a. In the present embodiment, the first to fourth ECUs 66a to 66d determine whether or not the detected voltage values “Vβ11” to “Vβ14” as the magnitude of the control power signal are substantially zero. A threshold value is set. This threshold is a value that defines a range in which the voltage value can be regarded as “0”, and can be determined theoretically, experimentally, or by experience, and a value that is less likely to be misidentified due to noise or the like can be selected. When the series circuit 67 is shared with the interlock mechanism, the position of the safety switch 16 is limited to the above-described position. Further, the control power signal supply units 631 to 633 are not used.

  In the fourth ECU 66 d, the series circuit 67 includes a control power signal supply unit 634. The fourth ECU 66 d transmits a control power signal having a voltage value “Vα14” applied as the magnitude of the control power signal output from the control power signal supply unit 634 to the control wiring 63 d including the safety switch 16. To the first ECU 66a.

  In the first ECU 66a, the series circuit 67 has a first detector 60a connected in series. A control wiring 63d from the fourth ECU 66d and a control wiring 63a to the second ECU 66b are connected to the first detection unit 60a. The first detection unit 60a outputs a signal indicating the voltage value “Vβ11” of the voltage applied as the magnitude of the input control power signal to the control unit. For example, when the voltage of the voltage value “Vα14” is supplied from the fourth ECU 66d, the voltage value “Vβ11” of the first detection unit 60a is the same value as the voltage value “Vα14”. That is, the control unit can determine whether or not the input voltage value “Vβ11” is substantially zero. The first detection unit 60a is connected in series with a changeover switch 64a that switches between opening and closing of the circuit between the output of the circuit where the voltage is detected and the control wiring 63a to the second ECU 66b. Opening and closing of the changeover switch 64a is controlled by the control unit. Therefore, when the changeover switch 64a is opened, the control power signal is not output to the control wiring 63a from the first detection unit 60a to the second ECU 66b. On the other hand, when the changeover switch 64a is closed, a control power signal is output to the control wiring 63a to the second ECU 66b. The first detection unit 60a detects the voltage value “Vβ11” if the control power signal is supplied from the fourth ECU 66d.

  In the second ECU 66b, the series circuit 67 has a second detection unit 60b connected in series. A control wiring 63a from the first ECU 66a and a control wiring 63b to the third ECU 66c are connected to the second detection unit 60b. The second detection unit 60b outputs a signal indicating the voltage value “Vβ12” of the voltage applied as the magnitude of the input control power signal to the control unit. For example, when the voltage of the voltage value “Vβ11” is supplied from the first ECU 66a, the voltage value “Vβ12” of the second detection unit 60b is the same value as the voltage value “Vβ11”. That is, the control unit can determine whether or not the input current value “Vβ12” is substantially zero. The second detection unit 60b is connected in series with a changeover switch 64b that switches between opening and closing of the circuit between the output of the circuit where the voltage is detected and the control wiring 63b to the third ECU 66c. Opening and closing of the changeover switch 64b is controlled by the control unit. Therefore, when the changeover switch 64b is opened, the control power signal is not output to the control wiring 63b from the second detection unit 60b to the third ECU 66c. On the other hand, when the changeover switch 64b is closed, a control power signal is output to the control wiring 63b to the third ECU 66c. The second detection unit 60b detects the voltage value “Vβ12” if the control power signal is supplied from the first ECU 66a.

  In the third ECU 66c, the series circuit 67 has a third detection unit 60c connected in series. A control wiring 63b from the second ECU 66b and a control wiring 63c to the fourth ECU 66d are connected to the third detection unit 60c. The third detection unit 60c outputs a signal indicating the voltage value “Vβ13” of the voltage applied as the magnitude of the input control power signal to the control unit. For example, when the voltage of the voltage value “Vβ12” is supplied from the second ECU 66b, the voltage value “Vβ13” of the third detection unit 60c is the same value as the voltage value “Vβ12”. That is, the control unit can determine whether or not the input current value “Vβ13” is substantially zero. The third detector 60c is connected in series with a changeover switch 64c that switches between opening and closing of the circuit between the output of the circuit where the voltage is detected and the control wiring 63c to the fourth ECU 66d. Opening and closing of the changeover switch 64c is controlled by the control unit. Therefore, when the changeover switch 64c is opened, the control power signal is not output to the control wiring 63c from the third detection unit 60c to the fourth ECU 66d. On the other hand, when the changeover switch 64c is closed, a control power signal is output to the control wiring 63c to the fourth ECU 66d. The third detector 60c detects the voltage value “Vβ13” if the control power signal is supplied from the second ECU 66b.

  In the fourth ECU 66d, the series circuit 67 has a fourth detection unit 60d connected in series. A control wiring 63c from the third ECU 66c is connected to the fourth detection unit 60d. The fourth detection unit 60d outputs a signal indicating the voltage value “Vβ14” of the voltage applied as the magnitude of the input control power signal to the control unit. For example, when the voltage of the voltage value “Vβ13” is supplied from the third ECU 66c, the voltage value “Vβ14” of the fourth detection unit 60d is the same value as the voltage value “Vβ13”. That is, the control unit can determine whether or not the input current value “Vβ14” is substantially zero. The fourth detection unit 60d is connected in series with a changeover switch 64d that switches between opening and closing of the circuit to the output of the circuit whose voltage is detected. The opening / closing of the changeover switch 64c is controlled by the control unit, but the tip of the changeover switch 64c is opened so that no special function is exhibited. The fourth detection unit 60d detects the voltage value “Vβ14” if the control power signal is supplied from the third ECU 66c.

  Next, processing for setting the address of each ECU in the present embodiment will be described. The setting of the address of each ECU is started on the condition that the address is not set or the ignition is turned on. When any one ECU starts the process of specifying an address, the process of setting the address in all the ECUs is started via communication or the like.

  With reference to FIG. 10, the process of setting the address of each ECU will be described. In the following, for convenience of explanation, the case where the magnitude of the voltage value is not substantially zero is referred to as “detecting the voltage” or the like, and the case where the magnitude of the voltage value is substantially zero. This is described as “no voltage detected”.

  In this embodiment, the address of the first ECU 66a (main ECU) is “1”, the address of the second ECU 66b is “2”, the address of the third ECU 66c is “3”, and the fourth ECU It is stored that the address of the ECU 66d is “4”.

  When the process of setting the address of each ECU is started, each control unit of the first to fourth ECUs 66a to 66d opens (turns OFF) the changeover switches 64a to 64d (step S40 in FIG. 10). Then, the first to fourth ECUs 66a to 66d determine whether or not their detection units 60a to 60d detect the voltage, that is, whether or not the voltage is substantially zero (step of FIG. 10). S41). As the changeover switches 64a to 64d are opened, only one of the first to fourth ECUs 66a to 66d detects the voltage. In the present embodiment, since the control power signal is supplied from the control power signal supply unit 634 of the fourth ECU 66d to the series circuit 67, first, the detection unit 60a of the first ECU 66a adjacent to the downstream is first detected. While the voltage is detected, the detection units 60a to 60d of the second to fourth ECUs 66b to 66d do not detect the voltage. If the first ECU 66a determines that a voltage has been detected (YES in step S41 in FIG. 10), the first ECU 66a transmits an address application signal, and address information that is a response signal to the address application signal is received. Waiting for reception (step S42 in FIG. 10). The address information is transmitted from the ECU set as the main ECU. However, since there is no ECU set as the main ECU yet, the first ECU 66a cannot receive the address information. . The first ECU 66a determines whether address information has been received after a predetermined time has elapsed (step S43 in FIG. 10). If the first ECU 66a determines that the address information has not been received (NO in step S43 in FIG. 10), the first ECU 66a determines itself as the main ECU and sets the address “1”. (Step S44 in FIG. 10). Thereby, the first ECU 66a completes the process of setting its own address.

  Subsequently, the first ECU 66a performs processing for setting addresses of the second to fourth ECUs 66b to 66d. That is, the first ECU 66a closes the changeover switch 64a (step S45 in FIG. 10). As a result, a control power signal is supplied from the first ECU 66a to the second ECU 66b. Then, the value for the next address is set to a number “1” larger than the issued address, in this case “2” (step S46 in FIG. 10), and the reception of the address application signal is awaited (FIG. 10). Step S47 and NO in Step S47). When it is determined that the address application signal has been received (YES in step S47 in FIG. 10), the control unit of the first ECU 66a sends the address application signal to the ECU, which is the second ECU 66b in the present embodiment. Address value “2” is returned (step S48 in FIG. 10). Then, it is determined whether the address value “2” is the number n (n = 4) of battery packs connected to the power supply device (step S49 in FIG. 10). When it is determined that the address value “2” is not the number of battery packs “4” (NO in step S49 in FIG. 10), the first ECU 66a returns to the process in step S46 and sets the value for the next address. The number is set to 1 greater than the issued address, here “3” (step S46 in FIG. 10), and the subsequent processing is repeated in the order of the third and fourth ECUs 66c and 66d. When the address value “4” is set in the fourth ECU 66d, the number becomes the same as the number of battery packs “4” (YES in step S49 in FIG. 10). Therefore, the first ECU 66a has the first to fourth ECUs 66a. The process of setting the addresses of -66d is terminated.

On the other hand, the second to fourth ECUs 66b to 66d wait for the detection units 60b to 60d to detect the voltage (NO in step S41 and step S41 in FIG. 10).
First, in a state where all the changeover switches 64a to 64d are opened, the voltage is detected only by the detection unit 60a of the first ECU 66a. However, when the first ECU 66a closes the changeover switch 64a, The voltage is also detected by the detection unit 60b of the second ECU 66b.

  When it is determined that the voltage is detected in the second ECU 66b (YES in step S41 in FIG. 10), the second ECU 66b transmits an address application signal to the first ECU 66a and from the first ECU 66a. Is received (step S42 in FIG. 10). Note that the second ECU 66b may repeatedly transmit the address application signal after a predetermined time interval. When the address information is received (YES in step S43 in FIG. 10), the second ECU 66b sets the received address information, for example, “2” as its own address (step S50 in FIG. 10). Then, the changeover switch 64b is closed (step S51 in FIG. 10), and the processing for setting the address ends.

  When the changeover switch 64b is closed, the voltage is also detected by the detection unit 60c of the third ECU 66c. When it is determined that the voltage is detected by the third ECU 66c (YES in step S41 in FIG. 10), the third ECU 66c transmits an address application signal to the first ECU 66a and receives address information corresponding thereto. (Steps S42 and S43 in FIG. 10). The third ECU 66c sets the received address information, for example, “3” as its own address (step S50 in FIG. 10) and closes the changeover switch 64c (step S51 in FIG. 10) to set the address. To finish the processing.

  In the state where the changeover switch 64b is opened, the detection units 60a and 60b of the first and second ECUs 66a and 66b also detect the voltage, but when the changeover switch 64b is opened, the first and second ECUs 66a. , 66b finishes the processing for setting the address.

  By closing the changeover switch 64c, the voltage is also detected by the detection unit 60d of the fourth ECU 66d. It is determined that the voltage is detected by the fourth ECU 66d (YES in step S41 of FIG. 10), and the fourth ECU 66d transmits an address application signal to the first ECU 66a and receives address information corresponding thereto ( Steps S42 and S43 in FIG. Then, the fourth ECU 66d sets the received address information, for example, “4” as its own address (step S50 in FIG. 10) and opens the changeover switch 64d (step S51 in FIG. 10) to set the address. To finish the processing.

  In the state where the changeover switch 64c is opened, the detection units 60a to 60c of the first to third ECUs 66a to 66c also detect the voltage, but when the changeover switch 64c is opened, the first to third ECUs 66a. Processes for setting addresses are finished for .about.66c.

As described above, at this time, the processing for setting the address of the first ECU 66a is also terminated.
Thereby, the process which sets the address of all the 1st-4th ECU66a-66d in a power supply device is complete | finished.

  According to the present embodiment, since the process of setting an address is performed based on whether or not a voltage is detected by the detection units 60a to 60d, that is, whether or not the voltage is substantially zero, the process of setting an address In this case, the influence of noise or the like can be reduced.

  As described above, according to the power supply device of this embodiment, in addition to the effects (3) and (5) described in the first or second embodiment, the following effects are listed. It will be obtained.

  (10) The main control device is preferably set in the first ECU 66a, and the main control device can determine the addresses of other ECUs. This increases the degree of freedom in setting the address of each ECU and address setting processing.

  Further, the ECU address is set based on the open / close state of the changeover switches 64a to 64d and whether or not the voltage value as the magnitude of the detected control power signal is substantially zero. Therefore, it is possible to improve the stability related to the address setting as compared with the case based on the magnitude of the detected control power signal.

  (11) By opening all the change-over switches 64a to 64d, it becomes possible to specify one control unit in which the magnitude of the voltage of the control power signal is not substantially zero. In addition, by closing the selector switch in order from the specified control unit, the series circuit 67 can sequentially set the address to the control unit connected next to the control unit to which the address is set. become. Thereby, the setting of the address of the ECU in the series circuit 67 can be performed more reliably.

  (12) Since the safety switch 16 is provided in the middle of the control wiring 63d, it is in a state where the voltage cannot be detected through the detection units 60a to 60d that the series circuit 67 is shut off because the safety switch 16 is opened. Based on this, all the ECUs 66a to 66d can detect. Thereby, the safety | security of a power supply device comes to be maintained.

(Other embodiments)
In addition, each said embodiment can also be implemented with the following aspects.
In each of the above embodiments, the case where the set address is held in a nonvolatile storage unit or the like has been illustrated. However, the present invention is not limited to this, and processing for setting an address may be performed whenever necessary. As a result, the design flexibility of the power supply device can be improved.

  In the second embodiment, the case where the resistance values of the four resistors rb are the same is illustrated. However, the present invention is not limited to this, and the resistance values of the resistors may be different. Even if there is a difference, the address of each ECU can be determined according to the magnitude of the detected voltage. As a result, the design flexibility of the power supply device can be improved.

  In each of the above embodiments, the first to fourth ECUs 15a to 15d are illustrated as having the same configuration. However, the present invention is not limited to this, and as long as the process of setting the address of each ECU can be performed, each ECU may have a different configuration. For example, some or all of the configurations of the ECUs that are not connected to the series circuit may be omitted. For example, ECUs having different configurations may be mixed. As a result, the degree of freedom in design as a power supply device and the possibility of adoption can be improved.

  In each of the above embodiments, the case where the control power signal supply units 30a to 30d, 431 to 434, 531 to 534, and 631 to 634 are provided in each ECU is illustrated. However, the present invention is not limited to this, and as long as the control power signal can be supplied to the series circuit, each ECU may be omitted if the power supply device has at least one control power signal supply unit. As a result, the design flexibility of the power supply device can be improved.

  In the first and third embodiments, safety is provided between the control power signal supply units 30a and 531 in the series circuits 17 and 57 and the second detection units 26b and 50b to which the control power signal is first supplied. The case where the switch 16 is connected in series is illustrated. However, the present invention is not limited to this, and the safety switch may be connected in series to any position in the series circuit as long as each battery pack can detect the operation of the safety switch. As a result, the design flexibility of the power supply device can be improved.

  In the first and second embodiments, the case where the communication line 18 is provided in the power supply device is illustrated. However, the present invention is not limited to this, and there may be no communication line. If information indicating the relationship between the detected current or voltage magnitude and the address is set in advance in each ECU, the address of each ECU can be set without transferring information between the ECUs. . Thereby, the freedom degree of a structure of a power supply device comes to be raised.

  In the third and fourth embodiments, the address information is exemplified as “1” to “4”, but the present invention is not limited to this, and what are the numbers and symbols constituting the address information? May be. As a result, the design flexibility of the power supply device can be improved.

  In each of the above embodiments, the storage unit of each ECU holds information that can set the ECU address corresponding to the detected magnitude of the current of the control power signal and the magnitude of the voltage. Exemplified the case. However, the present invention is not limited to this, and if the magnitude of the current and voltage of the control power signal detected by another ECU can be acquired, the control power signal detected by the other ECU and its own ECU can be obtained. The ECU address may be set based on the relative relationship between the magnitude of the current and the magnitude of the voltage. For example, if information that can set the address of the ECU based on the order of the magnitude of the current and the voltage is set in the ECU, the ECU corresponding to the magnitude of the current and the voltage of the control power signal The ECU address can be set even if the information that can set the address is not held.

  That is, since the address can be set based on the detection result of the detection unit of the other ECU and the detection result of the detection unit of its own ECU, the control power signal supplied from the control power signal supply unit It is possible to reduce the influence of the variation in size. Further, if the address is set based on the relative relationship between the detection results, it is possible to save the trouble of setting the specifications of the control power signal in advance in the control unit of the ECU. As a result, the design flexibility of the power supply device can be improved.

  In each of the above embodiments, the case where four battery packs are provided in the power supply device is illustrated. However, the present invention is not limited to this, and the number of battery packs provided in the power supply device may be less than four, such as three, or five, as long as the power supply capacity required as the power supply device can be secured. There may be more than four. As a result, the degree of freedom in design as a power supply device and the possibility of adoption can be improved.

  In each of the above embodiments, two battery stacks 12 are connected in series, and the two battery stacks 12 connected in series are connected in parallel. However, the present invention is not limited to this, and the number of battery stacks connected in series and the number of battery stacks connected in series are not limited as long as the power supply capacity required for the power supply device can be secured. As a result, the degree of freedom in design as a power supply device and the possibility of adoption can be improved.

  -In each said embodiment, although illustrated about the case where a single battery is a nickel hydride storage battery, a secondary battery (storage battery), such as a nickel cadmium battery and a lithium ion battery, may be sufficient as a single battery. It may be. In other words, the ECU address can be set even for a power supply device including these batteries.

  In each of the above embodiments, the case where the power supply device is used in an automobile is illustrated. However, the present invention is not limited to this, and the power supply device may be used as a movable body other than an automobile or a power supply fixedly installed as long as it is required as a power supply. Thereby, the application range of a power supply device can be expanded.

  11a to 11d ... 1st to 4th battery pack, 12 ... battery stack, 12a to 12d ... 1st to 4th battery stack, 13a, 13b, 14a, 14b ... power wiring, 15 ... ECU, 15a-15d ... 1st-4th ECU, 16 ... safety switch, 17 ... series circuit, 18 ... communication line, 21a-21d ... power supply detection part for control, 22a-22d ... current detector, 23 ... control part, 23a-23d ... 1st-4th control part, 24, 25a-25d ... constant current source, 26a-26d ... 1st-4th detection part, 30a-30d ... power signal supply part for control, 31-34 ... control wiring, 35a to 35d ... ground terminal, 40a to 40d ... first to fourth detection units, 41a to 41d ... control power supply detection unit, 431 to 434 ... control power signal supply unit, 43a to 43d ... control wiring, 45a to 45a 45d ... Grounding end 46a-46d ... 1st-4th ECU, 47 ... Series circuit, 50a-50d ... 1st-4th detection part, 51a-51d ... Power supply detection part for control, 52a-52d ... Current detector, 531 534 ... Control power signal supply unit, 53a to 53d ... Control wiring, 54a to 54d ... Changeover switch, 55a to 55d ... Ground terminal, 56a to 56d ... First to fourth ECUs, 57 ... Series circuit, 58 ... Constant current source, 60a-60d ... 1st-4th detection part, 631-634 ... Power signal supply part for control, 63a-63d ... Control wiring, 64a-64d ... Changeover switch, 66a-66d ... 1st-1st 4 ECU, 67... Series circuit, rb.

Claims (5)

In a power supply device comprising a plurality of battery packs,
Each of the plurality of battery packs includes a control device having a control unit that controls the battery pack,
The power supply device includes a series circuit in which the control devices are electrically connected in series, a control power signal supply unit that supplies a control power signal to the series circuit, and a control of each of the plurality of control devices. With a communication line that is communicably connected ,
Each of the control devices exchange information with each other via the communication line,
Each of the control devices is on the series circuit and outputs a detection result of the control power signal to the control unit of its own control device, and the magnitude of the control power signal detected by the detection unit And a storage unit for storing correspondence information corresponding to the address of the control device,
The control unit sets an address to each control device by associating the correspondence information with the magnitude of the control power signal detected by the detection unit ,
Each of the detection units of the plurality of control devices is connected to a changeover switch that switches between opening and closing the connection between the series circuit and the control power signal supply unit, and each of the control units of the plurality of control devices has its own Manage the opening / closing of the selector switch of the control device,
The changeover switch is for switching the connection to the ground terminal of the series circuit,
The magnitude of the control power signal is the magnitude of the current of the control power signal,
Of the plurality of control devices, the control device located on the most upstream side in the series circuit detects the control power signal from the control power signal supply unit and transmits the detection result to its own control unit. It has a power supply detection unit for control,
When the control unit detects a control power signal from the control power signal supply unit in a state where the control unit closes each changeover switch, the plurality of control devices set itself as a main control unit and Open the changeover switch of
When the control device other than the main control device detects the control power signal by its detection unit, the control device sends a signal indicating that the magnitude of the control power signal is not substantially zero via the communication line. To send to the control device,
The main control device receives a signal indicating that the magnitude of the control power signal detected by the detection unit is not substantially zero from one control device of the plurality of control devices via the communication line. To set the address of the control device and send the correspondence information to the control device.
The corresponding address is set in the control device, and the changeover switch managed by the control unit of the control device is opened.
A power supply apparatus that repeats this process until a signal indicating that the magnitude of the control power signal detected by the detection unit is not substantially zero is not received from any of the control units. In a power supply device comprising a plurality of battery packs,
Each of the plurality of battery packs includes a control device having a control unit that controls the battery pack,
The power supply device includes a series circuit in which the control devices are electrically connected in series, a control power signal supply unit that supplies a control power signal to the series circuit, and a control of each of the plurality of control devices. With a communication line that is communicably connected ,
Each of the control devices exchange information with each other via the communication line,
Each of the control devices is on the series circuit and outputs a detection result of the control power signal to the control unit of its own control device, and the magnitude of the control power signal detected by the detection unit And a storage unit for storing correspondence information corresponding to the address of the control device,
The control unit sets an address to each control device by associating the correspondence information with the magnitude of the control power signal detected by the detection unit ,
Each of the detection units of the plurality of control devices is connected to a changeover switch that switches between opening and closing the connection between the series circuit and the control power signal supply unit, and each of the control units of the plurality of control devices has its own Manage the opening / closing of the selector switch of the control device,
The changeover switch opens and closes the connection with the downstream of the series circuit,
The magnitude of the control power signal is the magnitude of the voltage of the control power signal,
One control device among the plurality of control devices is to set itself as a main control device when a control power signal is detected in a state where all changeover switches are opened,
A control device other than the main control device transmits a signal indicating that the magnitude of the control power signal detected by the detection unit is not substantially zero to the main control device via the communication line,
The main control device receives a signal to the effect that the magnitude of the control power signal is not substantially zero from the control unit of one of the plurality of control devices via the communication line. Accordingly, the address of the control device is set, the correspondence information is transmitted to the control device to set the corresponding address for the control device, and the changeover switch managed by the control unit of the control device is closed. Do
A power supply device that repeats this process until a signal indicating that the magnitude of the control power signal is not substantially zero is not received from any of the control devices. In a power supply device comprising a plurality of battery packs,
Each of the plurality of battery packs includes a control device having a control unit that controls the battery pack,
The power supply device includes a series circuit in which the control devices are electrically connected in series, and a control power signal supply unit that supplies a control power signal to the series circuit,
Each of the control devices is on the series circuit and outputs a detection result of the control power signal to the control unit of its own control device, and the magnitude of the control power signal detected by the detection unit And a storage unit that stores correspondence information corresponding to the address of the control device, and an outflow circuit that flows a predetermined amount of current from the series circuit downstream of the detection unit ,
The control device outputs a current obtained by flowing out the predetermined amount from a current supplied from upstream on the series circuit, downstream on the series circuit,
The detection unit detects the magnitude of the current of the control power signal input from the series circuit as the magnitude of the control power signal;
The said control part sets an address to each control apparatus by making the said correspondence information correspond with the magnitude | size of the power signal for control detected by the said detection part. The power supply device characterized by the above-mentioned. In a power supply device comprising a plurality of battery packs,
Each of the plurality of battery packs includes a control device having a control unit that controls the battery pack,
The power supply device includes a series circuit in which the control devices are electrically connected in series, and a control power signal supply unit that supplies a control power signal to the series circuit,
Each of the control devices is on the series circuit and outputs a detection result of the control power signal to the control unit of its own control device, and the magnitude of the control power signal detected by the detection unit And a storage unit that stores correspondence information that associates the address of the control device, and a resistance circuit that is connected downstream of the detection unit on the series circuit and drops the voltage ,
Each of the detectors has the resistor circuit connected in series on the series circuit,
The control device outputs a voltage dropped by the resistor circuit from a voltage supplied from upstream on the series circuit to the downstream on the series circuit,
Each of the detection units detects the magnitude of the voltage of the control power signal applied from the series circuit as the magnitude of the control power signal,
The said control part sets an address to each control apparatus by making the said correspondence information correspond with the magnitude | size of the power signal for control detected by the said detection part. The power supply device characterized by the above-mentioned. The power supply device according to any one of claims 1 to 4, wherein a safety switch that closes the circuit based on the fact that power can be supplied from the power supply device is connected in series to the series circuit. .

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