JP5111275B2 - Monitoring device, power storage device control system using the same, and railway vehicle - Google Patents

Description

  The present invention relates to a monitoring device for monitoring a storage battery, a power storage device control system using the same, and a railway vehicle.

  A storage battery that can be repeatedly charged and discharged is easy to use as a power supply, and is widely used from the power source of a portable terminal or a notebook PC to the power source of a hybrid vehicle.

  The amount of energy that can be stored properly and the appropriate charge / discharge current are determined for the storage battery due to its chemical characteristics. Charging / discharging beyond these will change the chemical properties and degrade or break performance. Therefore, in order to make the storage battery last longer, it is necessary to appropriately adjust charging / discharging while looking at the state of the storage battery.

  For this reason, in a system using a storage battery, a monitoring device that detects the state of the storage battery voltage and the like is provided, and the state information of the detected storage battery is transmitted to the charge / discharge control unit, and charge / discharge is controlled based on this information. Is normal.

  When a storage battery is used in a system with a large output scale such as an automobile, multiple storage batteries are connected in series in order to secure a large power and a large energy capacity (Patent Document 1). At this time, it is convenient in terms of the size and wiring of the monitoring device if a monitoring device is provided for each small series arranged to some extent and the charge / discharge control unit can cooperate with each.

JP 2003-70179 A

  For use as a power source for automobiles, the entire multi-series storage battery has a high voltage of several hundred volts. Since the monitoring device is connected to the storage battery by a sensor or is in close proximity, it is necessary to provide appropriate insulation to prevent destruction due to high voltage. For this, an insulating element such as a photocoupler can be used, but the cost increases accordingly.

  According to the method of Patent Document 1, when a large number of monitoring devices (cell controllers) associated with a multi-series storage battery are connected in a row, it is not necessary to insulate them with a photocoupler. The communication path to the separately provided charge / discharge control unit (battery controller) is limited to the monitoring devices at both ends in series, and the power storage device can be configured at low cost by insulating only these two locations with a withstand voltage for multiple series storage batteries. .

  However, it is assumed that the power storage device of Patent Document 1 has a voltage of about 144 volts for an electric vehicle or a hybrid electric vehicle and can be insulated by a relatively inexpensive photocoupler. When a large number of storage batteries are connected in series up to 1500 volts corresponding to the overhead line voltage for a larger-scale system, for example, a hybrid railway vehicle, an insulating element that can withstand a high voltage of 1500 volts is required. Such a high withstand voltage element is expensive.

  An object of the present invention is to provide a monitoring device capable of extending the life of a storage battery with a simple and inexpensive configuration and a power storage device control system using the same even when a high-voltage assembled battery in which multiple storage batteries are connected in series is used. Is to provide.

In order to solve the above-mentioned problems, the present invention monitors a plurality of battery packs each composed of a plurality of storage batteries connected in series, and a plurality of monitors each connected in series. And a communication device for transmitting information from the control device to a monitoring device adjacent to the control device. Each of the plurality of monitoring devices includes a plurality of parts. A plurality of processing means for generating charge / discharge control information based on the state of the assembled battery, and a power supply means capable of receiving electric energy , supplying power when receiving a power supply command, and stopping power supply output when not receiving the power supply command A first communication means for communicating with a monitoring device arranged adjacent to the control device side or an adjacent control device, and a second for communicating with a monitoring device arranged adjacent to the other side. Communication means, processing means and first Disposed between signal means or the second communication means when includes an insulating means for insulating at a voltage above the breakdown voltage of the subset cell, a monitoring device, which is connected via a control device and another monitoring device On the basis of the power supply command linked to the power supply output of the power supply means of the monitoring device adjacent to the control device side, switching on / off of power supply of the power supply device, and when adjacent to the control device, from the adjacent control device Based on the input power supply command , the power supply means is switched on / off .

Further, in a monitoring device connected to a partial battery composed of a plurality of storage batteries, monitoring the partial battery, and connected in series with another monitoring device, one end of the plurality of monitoring devices connected in series is a partial set. Connected to a control device that controls charging / discharging of the battery, the monitoring device can receive electric energy and processing means for generating charging / discharging control information based on the state of the sub battery, and supply power when receiving a power command The power supply means for stopping the power supply output when the power supply command is not received, the first communication means for communicating with the monitoring device arranged adjacent to the control device side or the adjacent control device, and the other side A second communication unit for communicating with a monitoring device disposed adjacent to the second monitoring unit; and an insulating unit that is disposed between the processing unit and the second communication unit and insulates with a withstand voltage equal to or higher than a voltage of the partially assembled battery. and, the control device and another monitoring device When connected via, on the basis of the power instruction interlocked to the power supply output of the power supply means of the monitoring device adjacent to the control apparatus switches the power supply on / off of the power supply means, in the case adjacent to the control unit The power supply means is switched on / off based on a power supply command input from an adjacent control device.

In addition, a plurality of battery packs composed of a plurality of storage batteries are connected in series, a plurality of battery packs are monitored, a plurality of monitoring devices are connected in series, and charging / discharging of the battery pack is controlled. And one end of the plurality of monitoring devices is connected to the control device, and each of the plurality of monitoring devices generates a plurality of charge / discharge control information based on the state of the plurality of partial assembled batteries. In order to communicate with the monitoring device arranged adjacent to the control device side or the monitoring device arranged adjacent to the control device side or the adjacent control device, and to the monitoring device arranged adjacent to the other side A second communication means, a power supply means capable of receiving electric energy , supplying power when receiving a power supply command, and stopping power supply output when not receiving the power supply command , processing means, first communication means, and second Between the communication means of the The has an insulating means for insulating each of said plurality of monitoring devices, to be connected via a control device and another monitoring device, power feeding of the power supply means of the monitoring device adjacent to the control apparatus Based on the power supply command with the output as the condition, on / off of power supply of the power supply means is switched, and when adjacent to the control device , the power supply based on the power supply command with the condition as the power supply output of the power supply means of the adjacent control device The power supply of the means is switched on / off .

  Even when a high-voltage assembled battery in which multiple storage batteries are connected in series is used, it is possible to provide a monitoring device capable of extending the life of the storage battery with a simple and inexpensive configuration and a power storage device control system using the same.

  Each embodiment will be described below with reference to the drawings.

  FIG. 1 is a diagram showing an embodiment of a power storage device control system of the present invention.

  The assembled battery b is composed of a plurality of storage batteries. The load ld consumes energy of the assembled battery b or generates energy to charge the assembled battery b. The control device ctl can change the load ld to adjust the energy input / output (charge / discharge of the battery pack b) between the battery pack b and the load ld. That is, charge / discharge of the assembled battery can be controlled.

  The circuit breaker br has two states: energization is possible and energization is not possible. These states can be controlled by a command from the cutoff control device brc of the control device ctl. When the circuit breaker br cannot be energized, the assembled battery b is electrically disconnected from the load ld and cannot be charged / discharged with the load ld.

  The assembled battery b includes a plurality of battery modules b1, b2, and b3 that are partial assembled batteries connected in series. Among them, the battery module b1 is grounded to the reference potential gnd. The battery modules b1, b2, b3 are formed by connecting a plurality of chargeable / dischargeable battery cells (storage batteries) such as nickel hydride batteries and lithium ion batteries in series. In this embodiment, considering the railway application, the voltage at both ends of the battery module is about 400 volts at the maximum when charged and discharged within an appropriate range, and the voltage of the assembled battery b is about 1200 volts at the maximum.

  Note that the number of battery modules is not limited to three in this example, and the present invention can be implemented in the same manner as long as there are a plurality of battery modules. The voltage of one battery module is not limited to 400 volts, and the present invention can be applied to different voltages.

  The voltage sensors cc1, cc2, and cc3 are voltage sensors that measure and output voltage values of battery cells inside the battery module at the same potential as the battery modules b1, b2, and b3, respectively.

  The monitoring devices mo1, mo2, and mo3 monitor battery modules that are a plurality of partial assembled batteries, and each of the monitoring devices is connected in series. Specifically, the battery modules b1, b2, and b3 are attached to the battery modules, respectively, and the state of the battery module to which the battery modules b1, b2, and b3 are attached is detected. The main function is to detect an abnormality in the battery module based on whether it is a value. In this embodiment, the configuration of each monitoring device is the same. For example, the insulating means is3, the contact r3, and the communication circuit c32 on the monitoring device mo3, which will be described later, are not used in the present embodiment. This is because it is easy. Below, it demonstrates centering on the battery module b2 and the monitoring apparatus mo2.

  The power supply means p2 is a switching power supply circuit. By applying a voltage (maximum 400 volts) from the battery module b2, to the microcomputer m2, the insulating means is2, the communication circuit c21, and the monitoring device mo2, which are processing means to be described later, various items not shown Power can be received and output from the battery module b2 that monitors suitable electrical energy (eg, 3.3 volt or 5 volt power supply widely used in general devices) to power the element. The power supply means p2 uses a relatively high-efficiency and inexpensive switching power supply method, but any power supply method may be used as long as such a power supply function is provided.

  The power supply element ic2 is an element that controls the power supply means p2 that is a switching power supply circuit. It has an oscillation mechanism necessary for the switching power supply system. While the power supply element ic2 is oscillating, the power supply output of the power supply means p2 is present, and when the oscillation is stopped, the power supply output is stopped. Further, the power supply element ic2 has a remote off control terminal, and the oscillation operation and the stop can be switched according to the power supply command applied thereto. Specifically, if this terminal is in a short-circuited state (if a “short-circuit state” is applied as a power command), it can oscillate, and if it is in an open state (if an “open state” is applied as a power command), the oscillation is stopped. To do. Since such a power supply element is generally a switching power supply system, it can be obtained at low cost.

  That is, the power supply element ic2 in the power supply means p2 stops the power feeding output when there is no power command input to the power command input terminal pci2.

  Here, the power supply means p2 is a relatively high-efficiency and inexpensive switching power supply system, and the power supply element ic2 for remote-off control is arranged therein, but the power supply means p2 has the power supply function and Any power supply method may be used as long as it has a remote off control terminal that stops output in response to a power supply command applied from the outside.

  The power supply command input terminal pci2 receives a power supply command linked to the output of the power supply means p1 of the monitoring device mo1 arranged adjacent to the lower side, and applies the power supply command input terminal to the power supply element ic2 in the power supply means p2. It is. The power supply command input terminal pci1 receives a power supply command to be applied to the power supply means p1 from the adjacent control device ctl.

  The monitoring device mo2 includes a microcomputer m2 that is a processing means. The microcomputer m2 receives the voltage value from the voltage sensor cc2 via the connection, and detects the voltage of the battery module b2 that is a partially assembled battery. Any method may be used for the microcomputer m2 to receive the voltage value from the voltage sensor cc2.

  The microcomputer m2 calculates the received voltage value of the battery module b2 and detects the SOC. Further, the voltage value and the SOC are compared with a predetermined threshold value, and an abnormality of the battery module b2 is detected from the result. The information detected by the microcomputer m2 may be determined according to information required by the control device ctl, and is not limited to the voltage value or the SOC. For example, the battery module b2 may be provided with a current sensor to detect the current value. Alternatively, a temperature sensor may be provided to detect the temperature.

  That is, the microcomputer m2 that is the processing means generates charge / discharge control information such as SOC based on the state information of the battery module b2 that is a partially assembled battery.

  The communication circuit c21 which is the first communication means is a lower communication circuit for communicating with the monitoring device mo2 disposed adjacent to the monitoring device mo2 on one side close to the reference potential. The communication circuit c11 that is the first communication means is a communication circuit for communicating with the control device ctl. The microcomputer m2 can transmit / receive information to / from the microcomputer m1 via the communication circuit c21. The communication at this time may be any method. Here, simple serial communication is assumed.

  The communication circuit c22 which is the second communication means is an upper communication circuit for communicating with the monitoring device mo2 disposed adjacent to the monitoring device mo2 on the other side far from the reference potential. The communication circuit c22 as the second communication means and the microcomputer m2 as the processing means are insulated by an insulating means is2 such as a photocoupler. The microcomputer m2 can transmit / receive information to / from the microcomputer m3 of the monitoring device mo3 via the insulating means is2 and the communication circuit c22. The communication at this time may be any method. Here, simple serial communication is assumed. The second communication means is supplied with power from the power supply means p3 of the monitoring device mo3 arranged adjacent to the second communication means.

  The insulating means (photocoupler) is2 may be a product that can withstand the use for the purpose of insulation at a voltage equivalent to the battery module b2, that is, about 400 volts. That is, the insulating means is2 is characterized in that it is insulated with a breakdown voltage equal to or higher than the voltage of the battery module b2 which is a partially assembled battery.

  The power input terminal pa2 is an upper power input terminal that uses the power supply means p3 of the monitoring device mo3 as a power input. Power is supplied to the communication circuit c22 from the power input terminal pa2. The power supply circuit rc2 is a power supply circuit that removes noise on the power supply line and provides a stable power supply to the communication circuit c22.

  The contact r2 is an insulated a contact relay that has a function of short-circuiting if there is sufficient power supply and opening if not, and can be used for insulation of 400 volts equivalent to the battery module b2. The contact r2 may be anything as long as it has such a function. Here, an element is used in which the output side relay is closed only when the light emitting diode on the input side is lit. Such a product is as inexpensive as the insulating means (photocoupler) is2.

  That is, the contact r2 is a power supply path insulating means, can receive a power supply command from the power supply means p2, and is disposed between the power supply means p2 and a power supply command output terminal pco2 described later, and is a voltage of the battery module b2 that is a partially assembled battery. What is necessary is just to insulate with the above pressure | voltage resistance.

  The power supply command output terminal pco2 is a terminal that is provided on the opposite side to the power supply command input means pci2 and that outputs a power supply command to the monitoring device mo3 disposed adjacent thereto. Specifically, the power supply for outputting the state of the contact r2 which is an insulated a contact relay as a power supply command “open state” or “short circuit state” and applying it to the remote off control terminal of the power supply element ic3 of the monitoring device mo3. Command output terminal.

  The configuration of the monitoring device mo2 has been described above, but the monitoring devices mo1 and mo3 have the same configuration. In particular, the monitoring device mo1 is grounded to the reference potential through the connection between the power supply means p1 and the battery module b1.

  Next, the configuration of the control device ctl will be described. The control device ctl is grounded to the reference potential gnd. Therefore, the battery module b1 having the same potential and the first-stage monitoring device mo1 can be connected without insulation. Further, power is supplied to each element on the control device ctl from a power supply device having abundant energy other than the assembled battery b.

  The microcomputer tm mainly performs calculation processing for adjusting the charge / discharge amount of the assembled battery b.

  The communication circuit tcb is connected to the communication circuit c11 of the first-stage monitoring device mo1. The microcomputer tm can transmit and receive information to and from the microcomputer m1 via the communication circuit tcb and the communication circuit c11. The communication specification at this time may be anything, but here it is assumed to be simple serial communication. The microcomputer tm can acquire the voltage, SOC, and abnormality information of the battery modules b1, b2, and b3 detected by the monitoring devices mo1, mo2, and mo3 via the microcomputer m1. This operation will be described later.

  The microcomputer tm stops charging based on the acquired voltage and SOC of the battery modules b1, b2, b3, for example, if the SOC is higher than a predetermined threshold, and stops discharging if the SOC is too small, and preferentially charges, Such charge / discharge control information is calculated. Further, if any of the battery modules b1, b2, b3 receives information that an abnormality has occurred, a protective operation of forcibly stopping charging / discharging of the assembled battery b by operating the circuit breaker br can be performed.

  The relay tr is a relay that can be switched between short circuit and open according to a command from the microcomputer tm. The relay tr is connected to the remote off control terminal of the power supply element ic1 via the power supply command input terminal pci1 of the first-stage monitoring device mo1, and applies an open or shorted state as a power supply command. This relationship is the same as the relationship between the contact r1 and the power supply element ic2 and the relationship between the contact r2 and the power supply element ic3.

  In the configuration of the present embodiment, a state in which the control device ctl acquires state information of the battery modules b1, b2, and b3 necessary for controlling charging / discharging of the assembled battery b is shown. For convenience, a bidirectional communication path from the microcomputer tm in the control device ctl to the microcomputer m1 in the monitoring device mo1 disposed adjacently via the communication circuit tcb and the communication circuit c11 is defined as an upper communication path, and an insulating means (from the microcomputer m1). Photocoupler) A bidirectional communication path from is1, communication circuit c12, communication circuit c21 to microcomputer m2 is connected to communication path 12, microcomputer m2 through insulation means (photocoupler) is2, communication circuit c22, communication circuit c31, and microcomputer m3. The two-way communication path leading to is called a communication path 23.

  FIG. 2 is a diagram showing the flow of transmission data on the upper communication path, the communication path 12, and the communication path 23 in time series until the microcomputer tm of the control device ctl acquires the state information of the battery module b3. In order to clearly indicate the direction of transmission data in each communication path, transmission to the reference potential side is called down (down), and transmission to the opposite side is called up (up). The header hd3, control data cd3, and status information sd3 are transmission data. Mtu, m1u, m2u, m3u, m2d, m1d, and mtd indicated by circles represent microcomputer processing.

  First, in the process mtu, the microcomputer tm generates a request for sending the status information of the battery module b3 addressed to the microcomputer m3, and transmits it to the upper communication path up. The request includes a header hd3 and control data cd3. The header hd3 describes the destination of the request. The control data cd3 is control data describing the content of the request (in this case, sending the status information of the battery module b3) and the like.

  The microcomputer m1 receives this request via the upper communication path up, and checks the destination described in the header hd3 in the process m1u. Since the destination is not addressed to itself by the microcomputer m3, the received request (header hd3 and control data cd3) is transmitted to the up of the communication path 12 as it is.

  The microcomputer m2 receives this request through the up of the communication path 12, and checks the destination described in the header hd3 in the process m2u. As with the microcomputer m1, it is confirmed that it is not addressed to itself, and the request is transmitted as it is to the up of the communication path 23.

  The microcomputer m3 receives this request through the up of the communication path 23, and checks the destination described in the header hd3 in the process m3u. After confirming that this request is addressed to itself, the content of the request is read from the control data cd3. Here, a request for sending state information of the battery module b3 is described. In response to this, in order to respond to the microcomputer tm with the voltage, SOC, and abnormality information of the battery module b3 detected by itself, the state information sd3 including these is generated and transmitted to the down of the communication path 23.

  The microcomputer m2 receives the state information sd3 via the down of the communication path 23, and transmits this data as it is to the down of the communication path 12 in the process m2d. At this time, the result of comparing the SOC of the battery module b3 and the SOC of the battery module b2 by the microcomputer m2, for example, can be added to the state information sd3 and transmitted as required by the microcomputer tm.

  The microcomputer m1 receives the status data via the down of the communication path 12, and transmits this data as it is to the down of the higher-level communication path in the process m1d. This is the same as the process m2d.

  The microcomputer tm receives the state data via the down of the upper communication path and develops it in the process mtd. Thus, the microcomputer tm acquires the state information of the battery module b3 according to the request transmitted in the process mtu.

  The microcomputer tm can receive the status information of the battery module b2 from the microcomputer m2 and the status information of the battery module b1 from the microcomputer m1 in the same procedure, and the acquired status information of the battery modules b1, b2, and b3 can be received. It is possible to control charging / discharging of the assembled battery b. In addition, if the control apparatus ctl can acquire the status information of each battery module b1, b2, b3, the procedure and content of communication and a process will not be restricted to this.

  An operation when the relay tr is operated in the configuration of the present embodiment will be described.

  FIG. 3 is a diagram showing how the outputs of the power supply means p1, p2 and p3 and the state of the circuit breaker br change when the relay tr is operated.

  Initially, the relay tr is short-circuited. At this time, the power supply command (upper power supply command) applied to the remote-off control terminal of the power supply element ic1 described above is the “short circuit state”. Therefore, the power supply element ic1 can oscillate, and the power supply means p1 supplies power to various elements including the contact r1 which is an insulated a contact relay on the monitoring device mo1. In response to this, the contact r1 which is an insulated a contact relay is short-circuited, and the power supply command “short-circuit state” is applied to the remote off control terminal of the power supply element ic2. Therefore, the power supply element ic2 can oscillate, and the power supply means p2 supplies power to various elements including the contact r2 which is an insulated a contact relay on the monitoring device mo2. The same applies to the contact r2 which is an insulated a contact relay and the power supply element ic3. The power supply means p3 supplies power to various elements on the monitoring device mo3.

  At a certain time Toff, the relay tr is opened by a command from the microcomputer tm. At this time, the power supply command (upper power supply command) applied to the remote off control terminal of the power supply element ic1 is changed to the “open state”. In response to this, the power supply element ic1 stops oscillating, so that the power supply from the power supply means p1 stops. The delay df1 is a propagation time from the time Toff until the power supply output of the power supply means p1 becomes sufficiently small. The contact r1, which is an insulated a-contact relay that no longer supplies power from the power supply means p1, is opened, the power command applied to the remote off control terminal of the power supply element ic2 changes to "open state", and the power supply means p2 also outputs power supply output. Stop. The delay df2 is a propagation time from the time Toff + df1 when the power supply output of the power supply means p1 becomes sufficiently small until the power supply output of the power supply means p2 becomes sufficiently small. The contact r2, which is an insulated a-contact relay that no longer supplies power from the power supply means p2, is opened, the power supply command "open state" is applied to the remote off control terminal of the power supply element ic3, and power supply from the power supply means p3 stops. . The delay df3 is a propagation time from the time Toff + df1 when the power supply output of the power supply means p2 becomes sufficiently small until the power supply output of the power supply means p3 becomes sufficiently small.

  The relay tr is short-circuited in response to a command from the microcomputer tm at a certain time Ton from the state where all the power supply outputs of the power supply means p1, p2, and p3 are stopped in this way. At this time, the power supply command (upper power supply command) applied to the remote-off control terminal of the power supply element ic1 is changed to the “short circuit state” again, and the power supply means p1 to various elements including the insulated a contact relay on the monitoring device mo1. Power supply is resumed. The delay dn1 is the propagation time from the time Ton to the restart of power supply to the power supply means p1. Upon receiving power supply from the power supply means p1, the contact r1, which is an insulated a-contact relay, changes to a short circuit, the power supply command “open state” is applied to the remote off control terminal of the power supply element ic2, and the power supply means p2 resumes power supply. The delay dn2 is the propagation time during this period. In response to this, the power supply means p3 similarly resumes power supply after a delay dn3.

  As described above, by operating the state of the short circuit or the open state of the relay tr, the power supply of the power supply means p1, p2, and p3 can be operated or stopped in conjunction with this.

  When the microcomputer tm operates the relay tr, the microcomputer tm issues an operation command for operating the circuit breaker br to the circuit breaker control device brc. This is to prevent the battery pack b from being overcharged / discharged beyond an appropriate range in a situation where the power supply means p1, p2, p3 are stopped and the state of the battery modules b1, b2, b3 cannot be detected. . Specifically, the microcomputer tm informs the interruption control device brc in advance when the relay tr is opened, and the interruption control device brc makes the circuit breaker br not energized. Further, the microcomputer tm informs the interruption controller brc when the relay tr is short-circuited, and in response to this, the interruption controller brc has a margin until the power supply means p1, p2, and p3 resume the power supply, and then the breaker circuit breaker. Br can be energized. Therefore, as shown in FIG. 3, the circuit breaker br cannot be energized by the preceding time dfb before the relay tr is opened at the time Toff, and after the relay tr is short-circuited at the time Ton, the circuit breaker br is passed through the waiting time dnb. Energization is possible.

  The above is the operation when operating the state of the relay tr in the configuration of the present embodiment.

  In the power storage device control system of the present embodiment, the main elements on the monitoring means mo3 (the microcomputer m3, the communication circuit c31, the light emission side of the insulation means (photocoupler) is3, the power supply means p3, the light emission side of the contact r3), and the monitoring device mo2 The upper partial elements (the non-light-emitting side of the insulating means (photocoupler) is2, the non-light-emitting side of the contact r2, and the power supply circuit rc2) have the same potential as the battery module b3. Similarly, main elements on the monitoring device mo2 and some elements on the monitoring device mo1 have the same potential as the battery module b2. The main element of the monitoring device mo1 has the same potential (reference potential) as that of the battery module b1. Accordingly, the voltage applied to the insulating means (photocoupler) is2 and the insulated a-contact relay r2 is 400 volts equivalent to the battery module b2. The voltage applied to the insulation means is1 and the contact r1 which is the a contact relay is 400 volts corresponding to the voltage of the battery module b1. In this way, it is possible to use an insulating means that insulates at a withstand voltage at least equal to or higher than the voltage of the battery module that is a partially assembled battery, that is, without using a high withstand voltage element that can be used for insulation of 1200 volts equivalent to the assembled battery b. Since only an element that can be used for insulation of a module equivalent to 400 volts is used, it is possible to provide a monitoring device capable of extending the life of a storage battery with a simple and inexpensive configuration and a power storage device control system using the same.

  When the power storage device control system of this embodiment is used, when the assembled battery b is not used for a long time, the power consumption of the monitoring devices mo1, mo2, and mo3 can be stopped simply by operating the relay tr, and the assembled battery b is overdischarged. Can be prevented. Since it is not necessary to touch them directly to stop the voltage consumption of the high-voltage monitoring devices mo2 and mo3 of several hundred to thousands of volts, it is simple and safe.

  In the power storage device control system of the present embodiment, when the connection for applying the power supply command to each power supply means, such as the connection between the power supply command output terminal pco1 and the power supply command input terminal pci2, is disconnected, the power supply elements ic1, ic2 , Ic3 remote off control terminal is the same as the application of the power command “open state”, and power supply is stopped. Thereby, the operation of the monitoring device cannot be stopped due to the disconnection of the power command path, and the assembled battery b is not overdischarged, and the assembled battery b can be made to last longer.

  FIG. 4 is a diagram showing another embodiment of the power storage device control system of the present invention. A significant difference from FIG. 1 is that an insulating means is2 that insulates with a withstand voltage equal to or higher than the voltage of the battery module b2 that is a partially assembled battery is disposed between the microcomputer m2 that is the processing means and the communication circuit c21 that is the first communication means. It is that you are.

  Specifically, the monitoring device mo2 ′ is obtained by changing the following points from the monitoring device mo2 in FIG. Except for the following points, it is the same as the monitoring apparatus of FIG.

  The position of the insulating means (photocoupler) is2 was changed from between the microcomputer m2 and the communication circuit c22 to between the microcomputer m2 and the communication circuit c21. Accordingly, power is supplied to the communication circuit c22 from the power supply means p2, and power is supplied to the communication circuit c21 from the power supply means p1 of the monitoring device mo1 ′ via the power supply input terminal pi2. A power supply command is applied to the power supply element ic2 via a contact r2 on the monitoring device, and a contact r2 which is a power path insulation means is supplied from the power supply means p1 of the monitoring device mo1 'via a power supply input terminal pi2. Power was supplied. That is, a power supply command to be applied (powered) to the power supply means p2 from the monitoring device mo1 ′ disposed adjacent to the power supply input terminal pi2. The contact r2, which is a power path insulation means, is disposed between the power input terminal pi2 and the power supply means p2, and insulates with a breakdown voltage equal to or higher than the voltage of the battery module, as in the first embodiment. The power supply output of the power supply means p2 is output from the power supply output terminal po2 to the monitoring device mo3 ′.

  The monitoring devices mo1 ′ and mo3 ′ are obtained by similarly changing the monitoring devices mo1 and mo3, respectively. However, regarding the monitoring device mo1 ′, the “power supply means of the lower monitoring device” is replaced with the power supply tp of the control device ctl ′. The power supply tp can be switched between the presence and absence of a power supply output by a command from the microcomputer tm. The contact r1 is short-circuited if power is supplied from the power source tp, and is opened if not.

  The microcomputer tm can acquire the state information of the battery modules b1, b2, and b3 as shown in FIG.

  The power supply output of each power supply means p1, p2, p3 can be operated / stopped in the same manner as in FIG. 3 by switching the power supply tp on / off instead of opening / closing the relay tr in the first embodiment.

  In the power storage device control system of the present embodiment, for example, in the monitoring device mo2 ′, a remote on / off line for the power supply means p2 and a power supply line to the communication circuit c21 insulated from the power supply means p2 are connected to the power input terminal pi2. One line from In the first embodiment, these lines are separate (a power supply command input terminal pci2 for remote on / off, and a power supply input terminal pa2 for power supply to the communication circuit). Thus, the power storage device control system of the present embodiment can be configured with less wiring than the power storage device control system of the first embodiment.

  FIG. 5 shows an example of the configuration of the railway vehicle power unit according to this embodiment.

  The driving device drv transmits an operation command corresponding to the operation state to the converter ld. The converter ld controls the rotation of the motor mt connected to the wheel shaft in accordance with the operation command. Thus, the vehicle can be accelerated / decelerated by operating the driving device drv.

  The converter ld obtains electric power for operating the motor from the two power units. One is an engine generator src1. This device supplies electric power generated by driving a generator with an engine to a converter ld. The other is power storage device src2. This device supplies electric power generated by discharging the storage battery to the converter ld through the power line 2, and charges regenerative power from the motor mt to the storage battery through the power line 2.

  The converter ld determines the amount of power supplied from each of the two power units in consideration of the state of the power source in addition to the necessary power corresponding to the operation command. Between the power storage device src <b> 2, the state of the storage battery is received via the communication line 3, and the charge / discharge amount is adjusted by transmitting a charge / discharge control command.

  The voltage supplied from the engine generator src1 and the power storage device src2 to the converter ld is DC 1500V.

  1 and 4 are specific configuration examples of the power storage device src2.

  Hereinafter, another configuration example of the power storage device src2 will be described with reference to FIG.

  The basic configuration is the same as that described in FIG. 1 and FIG. 4, and monitors a plurality of partial batteries, each of which includes a plurality of storage batteries connected in series, and each of the plurality of partial batteries. Is a configuration having a plurality of monitoring devices connected in series and a control device for controlling charging / discharging of the assembled battery.

  As shown in FIG. 6, the power storage device src2 includes battery modules b1 to b3 that are partial assembled batteries in which secondary battery cells that are a plurality of storage batteries are connected in series. The rated voltage of each battery module is 500V, and an assembled battery having a rated voltage of 1500V is configured by connecting three battery modules b1 to b3 in series. Both electrode terminals of the assembled battery are connected to the power line 2 via the charge / discharge control device ctl, and are connected to the converter ld described above. The control device ctl includes a microcomputer tm having two communication channels, one of which is connected to the converter ld by the communication line 3. The negative electrode of the battery module b1 and the control device ctl are grounded to the vehicle body, and the potential is 0V.

  Monitoring devices mo1 to mo3 for detecting the voltage of the battery are attached to each of the battery modules b1 to b3 of the partially assembled battery. The monitoring device mo1 has a microcomputer m1 connected to the voltage sensor cc1 via the voltage sensor cc1 and the insulating means is14. The same applies to the monitoring devices mo2 and mo3.

  The microcomputer m1 has two communication channels, one of which is connected to a communication circuit c11 which is a communication means via an insulation means is11, and the other is connected to a communication circuit c12 which is a communication means via an insulation means is12. The microcomputer m2 has two communication channels, one of which is connected to the communication circuit c21 via the insulating means is21 and the other is connected to the communication circuit c22 via the insulating means is22. The microcomputer m3 has two communication channels, one of which is connected to the communication circuit c31 via the insulating means is31 and the other is connected to the communication circuit c32 via the insulating means is32. That is, one monitoring device has two communication means (first communication means and second communication means), between the microcomputer and the first communication means, and between the microcomputer and the second communication means, respectively. It is characterized by a structure provided with an insulating means.

  All of the insulating means is11, is12, is21, is22, is31, and is32 can insulate 500V corresponding to the voltage of the battery module and transmit signals in both directions.

  Between the monitoring device mo3 and the monitoring device mo2, the communication circuit c31 and the communication circuit c22 are connected, and the microcomputer m2 and the microcomputer m3 can communicate via the two insulating means is22 and is31. A communication circuit c21 and a communication circuit c12 are connected between the monitoring device mo2 and the monitoring device mo1, and the microcomputer m2 and the microcomputer m1 can communicate with each other via the two insulating means is12 and is21. Between the monitoring device mo1 and the control device ctl, one of the communication channels c11 and the communication channel of the microcomputer tm is connected, and the microcomputer m1 and the microcomputer tm can communicate via the insulating means is11.

  The potential reference of the communication circuit c21, the microcomputer m2, and the communication circuit c22 of the monitoring device mo2 is determined by the voltage dividing means vd2. The potential reference of the communication circuit c21 is the negative pole of the battery module b2, the potential reference of the communication circuit c22 is the positive pole of the battery module b2, and the potential reference of the microcomputer m2 is a voltage dividing point obtained by dividing the bipolar voltage of the battery module b2 into two by resistance. is there. That is, the voltage dividing means is composed of a combined resistor in which a plurality of resistors are connected in series so as to be an intermediate potential that is higher than the negative potential and lower than the positive potential by connecting to both electrodes of the battery module that is a partial assembled battery. It is assumed that the reference potential of the microcomputer as the processing means is an intermediate potential. Thus, by setting the potential reference of the microcomputer m2 to the intermediate potential of the battery module b2, the voltage applied to the insulating means is24 can be 250V, which is half the rated voltage of the battery module. The same applies to the potential reference of the monitoring device mo1 and the monitoring device mo3.

  According to the above configuration, all of the microcomputers m1 to m3 and the microcomputer tm are connected by the communication path directly or relaying other microcomputers, and the reference potentials on the communication path are distributed differently by 250 V, and the insulating means is11, is12 , Is21, is22, and is31 are each applied with 250V.

  Table 1 summarizes the circuit and microcomputer reference potentials.

  The power supply means p1 to p3 and the insulation means is13, is23, and is33 relate to the power supply of each monitoring device. The power supplies of the monitoring devices mo1 to mo3 are supplied by converting the voltages of the battery modules b1 to b3 into power supply voltages of a microcomputer or the like by the power supply means p1 to p3, respectively. Each power supply means receives a control signal from the monitoring device connected adjacent to the control device ctl side or the microcomputer of the control device via the insulating means, and turns on / off the power supply output in accordance with this signal. That is, the power supply means p1 can be controlled on / off from the control device ctl, and the power supply means p2 and p3 from the monitoring devices mo1 and mo2 via the insulation means is13 and is23, respectively.

  The power supply p0 is connected to a power supply system mounted on the vehicle separately from the battery module, and supplies power to the control device ctl.

  Details of the power supply configuration will be described with reference to FIG.

  FIG. 7 is a connection configuration of the control device ctl and the monitoring device mo1, and the monitoring device mo1 and the monitoring device mo2 according to the power supply means. The connection configuration between the monitoring device mo2 and the monitoring device mo3 is the same as the connection configuration between the monitoring device mo1 and the monitoring device mo2.

  The power supply means p1 is a switching power supply composed of a power supply element ic1 and a relay r1 connected to both poles of the battery module b1 via the insulation transformer tr1, and the power of the battery module b1 insulated by the insulation transformer tr1 is communicated with the microcomputer m1. c12. The relay r1 is a normally-off contact that intermittently supplies power from the battery module b1 to the power supply element ic1 and the insulation transformer tr1 according to a signal from the control device ctl. The contact side of the control device ctl and the relay r1 is 500 V or more. Insulated with pressure resistance.

  When the contact side of the relay r1 is open, the power supplied from the battery module b1 to the microcomputer m1 and the communication circuit c12 cannot be taken out. That is, the power supply means p1 is turned off. The light emitting side of the relay r1 is connected to the port of the microcomputer tm of the control device ctl via a transistor. When the port of the microcomputer tm is set to high, the power is supplied from the power source p0 which is also the power source of the microcomputer tm. That is, when the power supply p0 is turned on to start the microcomputer tm and then the port of the microcomputer tm is set to high, the contact side of the relay r1 is closed, and the power supply from the power supply means p1 to the communication circuit c12 and the microcomputer m1 is turned on.

  When the signal line connecting the microcomputer tm and the contact point r1 is disconnected between the control device ctl and the monitoring device mo1, the energization to the light emission side of the relay r1 is stopped, so the output of the power supply means p1 is turned off.

  Power is supplied to the communication circuit c11 from the power source p0 using a power line for energizing the light emitting side of the contact r1.

  The power supply means p2 has the same configuration as that of the power supply means p1, and supplies the power of the battery module b2 to the communication circuit c22 and the microcomputer m2. The light receiving side of the relay r2 is connected to the microcomputer m1 of the monitoring device mo1 via the insulating means is13, and is energized when the port of the microcomputer m1 is set high. In other words, the microcomputer m1 can be operated to open / close the contact r2 to switch the output on / off.

  When the signal line connecting the microcomputer m1 and the relay r2 is cut between the monitoring device mo1 and the monitoring device mo2, the energization to the light emission side of the relay r2 is stopped, so the output of the power supply means p2 is turned off.

  Power is supplied to the communication circuit c21 from the power supply means p1 using a power line for energizing the light emission side of the contact r2.

  With the above power supply configuration, the power source of the monitoring device mo1 can be turned on / off from the control device ctl, the power source of the monitoring device mo2 can be turned on / off from the monitoring device mo1, and the power source of the monitoring device mo3 can be turned on from the monitoring device mo2. It can be turned on and off. That is, the power supply state of each monitoring device can be turned on / off by the adjacent monitoring device or control device.

  A state in which the control device ctl acquires the state of each battery module under this configuration will be described with reference to FIG. 8 exemplifying the case of acquiring the state of the battery module b3.

  At time u1, the microcomputer tm starts a process mtu for generating control data cd3 for requesting status information. The destination of the control data cd3 is set to the microcomputer m3, and the microcomputer tm transmits the control data cd3 to the microcomputer m1. Receiving this, the microcomputer m1 performs a process m1u for confirming the destination, and transmits the control data cd3 to the microcomputer m2. The same processing m2u is performed in the main m2 that has received this, and the control data cd3 is transmitted to the microcomputer m3. Receiving this, the microcomputer m3 confirms that the destination is itself in the process m3u, processes the state information, generates the state information sd3, and sends the state information sd3 with the destination set to the microcomputer tm to the microcomputer m2. Send. Receiving this, the microcomputer m2 performs the process m2d for transfer and transfers it to the microcomputer m1, and the microcomputer m1 also performs the same process m1d and transfers it to the microcomputer tm. Thereby, the state information sd3 reaches the microcomputer tm.

  The microcomputer tm can collect the state information of the battery modules b1 and b2 from each of the microcomputers m1 and m2 in the same procedure.

  Next, how the control device ctl controls the start and end of the monitoring device under this configuration will be described with reference to FIG. For convenience, the initial logic of the microcomputer port is set to low.

  First, the startup procedure is shown. At time t0, the power supply p0 and the power supply means p1 to p3 are turned off. First, at time t1, the power supply p0 is turned on and the microcomputer tm is activated. Next, when the microcomputer tm sets the port to high at time t2, the power supply means p1 is turned on and the microcomputer m1 is activated. When the microcomputer m1 sets the port to high at time t3, the power supply means p2 is turned on and the microcomputer m2 is activated. When the microcomputer m2 sets the port to high at time t4, the power supply means p3 is turned on, the microcomputer m3 is activated, all the microcomputers and peripheral circuits are activated, and the above-described battery state can be detected and transmitted. .

  Next, the termination procedure is shown. When the microcomputer tm turns the port low at time t5, the power supply means p1 is first turned off. Then, the port of the microcomputer m1 is turned off, the power supply means p2 is turned off, and the power supply means p3 is further turned off in a chain. Thereafter, the power source p0 is turned off at time t6. This returns to the state at the initial time t0.

  According to the power storage device of the present embodiment described above, the monitoring device that insulates the state of the high-voltage assembled battery in which the battery modules, which are a plurality of partial assembled batteries, are connected in series, with half of the rated voltage of the battery module at each insulation location Can be detected by combining.

  Furthermore, since two monitoring devices adjacent to each other are connected via two insulating means, even if one insulating means stops functioning as an insulating means, the insulation between microcomputers is maintained by the other insulating means. It is reliable because it can prevent insulative chains.

  In addition, since the power on / off of all the monitoring devices can be controlled from the control device, the consumption of the battery module that supplies power to the monitoring device can be suppressed as much as possible when the monitoring device is not used.

  Further, since the monitoring device that cannot deliver the power control signal due to the disconnection of the harness connecting the monitoring devices is automatically turned off, it is possible to avoid overdischarge of the battery module.

  In this embodiment, the power storage device is configured by an assembled battery in which three battery modules are connected in series and three monitoring devices. However, the present invention can also be applied to the case where battery modules are further added. In this case, if the monitoring device connected to the battery module having a higher potential is connected to the insulating means is32, is33 and the communication circuit c32 of the monitoring device mo3, the relationship between the monitoring device mo1 and the monitoring device mo2 and the monitoring device mo2 and the monitoring device are monitored. It can be handled in the same manner as the relationship with the device mo3.

It is a figure which shows one Example of the electrical storage apparatus control system which concerns on this invention. It is a figure showing the mode of communication for the control apparatus of FIG. 1 to acquire the state of a battery module. It is a figure showing the state change of each power supply means and circuit breaker when the relay in the control apparatus of FIG. 1 is operated. It is a figure which shows the other Example of the electrical storage apparatus control system which concerns on this invention. It is a figure which shows one Example of the motive power apparatus of the rail vehicle using the electrical storage apparatus control system which concerns on this invention. It is a figure which shows the other Example of the electrical storage apparatus control system which concerns on this invention. It is a figure which shows one Example of the power supply means shown in FIG. It is a figure which shows the mode of the communication for the control apparatus shown in FIG. 6 to acquire the status information of a battery module. It is a figure which shows the procedure which starts and complete | finishes the monitoring apparatus shown in FIG.

Explanation of symbols

ld load ctl, ctl ′ control device b assembled battery b1, b2, b3 battery module gnd reference potential br circuit breaker cc1, cc2, cc3 voltage sensor mo1, mo2, mo3, mo1 ′, mo2 ′, mo3 ′ monitoring devices p1, p2 , P3 power supply means r1, r2, r3 contacts ic1, ic2, ic3 power supply elements m1, m2, m3, tm microcomputer rc1, rc2, rc3 power supply circuit is1, is2, is3 insulation means c11, c12, c21, c22, c31, c32 , Tcb, tci communication circuits pci1, pci2, pci3 power supply command input terminals pco1, pco2, pco3 power supply command output terminals pa1, pa2, pa3, pi1, pi2, pi3 m2d, m1d, mtd processing hd3 Header cd3 control data sd3 state information df1, df2, df3, dn1, dn2, dn3 delay dfb preceding time dnb latency po1, po2, po3 power output terminal

Claims (22)

An assembled battery in which a plurality of partial assembled batteries including a plurality of storage batteries are connected in series;
A plurality of monitoring devices each monitoring the plurality of partial batteries, each connected in series;
A control device for controlling charging and discharging of the assembled battery;
A communication path for transmitting information from the control device to a monitoring device adjacent to the control device,
Each of the plurality of monitoring devices is
A plurality of processing means for generating charge / discharge control information based on a state of the plurality of partial assembled batteries;
A power supply means that can receive electric energy, supplies power when receiving a power supply command, and stops power supply output when not receiving a power supply command ;
First communication means for communicating with a monitoring device arranged adjacent to the control device side or the adjacent control device;
A second communication means for communicating with a monitoring device arranged adjacent to the other side;
Insulating means disposed between the processing means and the second communication means, and insulating with a withstand voltage equal to or higher than the voltage of the partial assembled battery,
The monitoring device
When the control device is connected via another monitoring device, the power supply means is turned on based on the power command linked to the power supply output of the power supply means of the monitoring device adjacent to the control device side. Switch / off,
A power storage device control system characterized in that , when adjacent to the control device , the power supply means is switched on / off based on the power command input from the adjacent control device. The power storage device control system according to claim 1,
Each of the plurality of monitoring devices is
A power supply command input terminal for receiving a power supply command to be applied to the power supply means from a monitoring device arranged adjacent to the control device side or the adjacent control device;
When power is supplied from the power supply means , a power command is output to the monitoring device disposed adjacent to the other side, and when power is not supplied from the power supply means, the monitoring device is disposed adjacent to the other side. A power supply command output terminal that does not output a power supply command,
A power storage device control system comprising: a power supply path insulating means that can receive a power supply command from the power supply means and that is disposed between the power supply means and the power supply command output terminal and insulates with a withstand voltage equal to or higher than a voltage of the partially assembled battery. The power storage device control system according to claim 2,
The power storage device control system in which power is supplied to the second communication means from a power supply means of a monitoring device arranged adjacent to the other side. An assembled battery in which a plurality of partial assembled batteries including a plurality of storage batteries are connected in series;
A plurality of monitoring devices each monitoring the plurality of partial batteries, each connected in series;
A control device for controlling charging and discharging of the assembled battery;
A communication path for transmitting information from the control device to a monitoring device adjacent to the control device,
Each of the plurality of monitoring devices is
A plurality of processing means for generating charge / discharge control information based on a state of the plurality of partial assembled batteries;
A power supply means that can receive electric energy, supplies power when receiving a power supply command, and stops power supply output when not receiving a power supply command;
First communication means for communicating with a monitoring device arranged adjacent to the control device side or the adjacent control device;
A second communication means for communicating with a monitoring device arranged adjacent to the other side;
An insulating means disposed between the processing means and the first communication means, and insulating at a withstand voltage equal to or higher than a voltage of the partial assembled battery;
The monitoring device
When the control device is connected via another monitoring device, the power supply means is turned on based on the power command linked to the power supply output of the power supply means of the monitoring device adjacent to the control device side. Switch / off,
A power storage device control system characterized in that, when adjacent to the control device, the power supply means is switched on / off based on the power command input from the adjacent control device. The power storage device control system according to claim 4, wherein
Each of the plurality of monitoring devices is
From the monitoring device arranged adjacent to the control device side or the adjacent control device, the electric power is supplied.
A power input terminal for receiving a power command to be applied to the power source means;
A power command can be received from the power input means, and between the power input terminal and the power means.
A power path insulation means arranged and insulated with a withstand voltage equal to or higher than the voltage of the partial assembled battery;
When power is supplied from the power supply means, a power command is output to the monitoring device disposed adjacent to the other side, and when power is not supplied from the power supply means, the monitoring device is disposed adjacent to the other side. A power supply command output terminal that does not output a power supply command,
A power storage device control system. The power storage device control system according to claim 4, wherein
A power storage device control system in which power is supplied to the first communication unit from a monitoring device arranged adjacent to the control device side or from the adjacent control device. The power storage device control system according to claim 4, wherein
A power storage device control system in which power is supplied to the first communication unit from the power input terminal. In a monitoring device connected to a partial battery composed of a plurality of storage batteries, monitoring the partial battery, and connected in series with another monitoring device,
One end of the plurality of monitoring devices connected in series is connected to a control device that controls charging and discharging of the partial battery pack,
The monitoring device
Processing means for generating charge / discharge control information based on the state of the partial battery pack;
A power supply means that can receive electric energy, supplies power when receiving a power supply command, and stops power supply output when not receiving a power supply command;
First communication means for communicating with a monitoring device arranged adjacent to the control device side or the adjacent control device;
A second communication means for communicating with a monitoring device arranged adjacent to the other side;
Insulating means disposed between the processing means and the second communication means, and insulating with a withstand voltage equal to or higher than the voltage of the partial assembled battery,
When the control device is connected via another monitoring device, the power supply means is turned on based on the power command linked to the power supply output of the power supply means of the monitoring device adjacent to the control device side. Switch / off,
A monitoring device, wherein when adjacent to the control device, the power supply means is switched on / off based on the power command input from the adjacent control device. The monitoring device according to claim 8, wherein
A power supply command input terminal for receiving a power supply command to be applied to the power supply means from a monitoring device arranged adjacent to the control device side or the adjacent control device;
When power is supplied from the power supply means, a power command is output to the monitoring device disposed adjacent to the other side, and when power is not supplied from the power supply means, the monitoring device is disposed adjacent to the other side. A power supply command output terminal that does not output a power supply command,
A monitoring apparatus comprising: a power supply path insulating means that can receive a power supply command from the power supply means and that is disposed between the power supply means and the power supply command output terminal and insulates with a withstand voltage equal to or higher than a voltage of the partially assembled battery. The monitoring device according to claim 9, wherein
A monitoring device fed to the second communication means from a power supply means of a monitoring device arranged adjacent to the other side. In a monitoring device that is connected to a partial battery composed of a plurality of storage batteries, monitors the partial battery, and can be connected to other monitoring devices connected in series.
One end of the plurality of monitoring devices connected in series is connected to a control device that controls charging and discharging of the partial battery pack,
The monitoring device
Processing means for generating charge / discharge control information based on the state of the partial battery pack;
A power supply means that can receive electric energy, supplies power when receiving a power supply command, and stops power supply output when not receiving a power supply command;
First communication means for communicating with a monitoring device arranged adjacent to the control device side or the adjacent control device;
A second communication means for communicating with a monitoring device arranged adjacent to the other side;
An insulating means disposed between the processing means and the first communication means, and insulating at a withstand voltage equal to or higher than a voltage of the partial assembled battery;
When the control device is connected via another monitoring device, the power supply means is turned on based on the power command linked to the power supply output of the power supply means of the monitoring device adjacent to the control device side. Switch / off,
A monitoring device, wherein when adjacent to the control device, the power supply means is switched on / off based on the power command input from the adjacent control device. The monitoring device according to claim 11, wherein
A power supply input terminal for receiving a power supply command to be applied to the power supply means from a monitoring device arranged adjacent to the control device side or the adjacent control device;
A power path insulating means that can receive a power command from the power input means and is disposed between the power input terminal and the power means, and insulates with a withstand voltage equal to or higher than a voltage of the partially assembled battery;
When power is supplied from the power supply means, a power command is output to the monitoring device disposed adjacent to the other side, and when power is not supplied from the power supply means, the monitoring device is disposed adjacent to the other side. A power supply command output terminal that does not output a power supply command,
Having a monitoring device. The monitoring device according to claim 11, wherein
The first communication means is a monitoring device arranged adjacent to the control device side or a monitoring device supplied with power from the adjacent control device. The monitoring device according to claim 12, wherein
A monitoring device that supplies power to the first communication means from the power input terminal. An assembled battery in which a plurality of partial assembled batteries including a plurality of storage batteries are connected in series;
A plurality of monitoring devices each monitoring a plurality of partial batteries, each connected in series;
A control device for controlling charging and discharging of the assembled battery,
One end of the plurality of monitoring devices is connected to the control device,
Each of the plurality of monitoring devices is
A plurality of processing means for generating charge / discharge control information based on a state of the plurality of partial assembled batteries;
It communicates with a monitoring device arranged adjacent to the control device side or with the adjacent control device.
A first communication means;
A second communication means for communicating with a monitoring device arranged adjacent to the other side;
A power supply means that can receive electric energy, supplies power when receiving a power supply command, and stops power supply output when not receiving a power supply command;
The subset is disposed between the processing means and the first communication means and the second communication means.
Insulating means for insulating the voltage of the battery,
Each of the plurality of monitoring devices is
When connected to the control device via another monitoring device, based on the power supply command on the condition of the power supply output of the power supply device of the monitoring device adjacent to the control device side, Switch on / off,
Power storage device control characterized in that, when adjacent to the control device, power supply on / off of the power supply means is switched based on the power supply command on the condition that the power supply output of the power supply means of the adjacent control device is a condition system. The power storage device control system according to claim 15, wherein
The said monitoring apparatus is an electrical storage apparatus control system which has one in the said partial assembled battery. The power storage device control system according to claim 15, wherein
The power storage device control system, wherein the insulating means has a withstand voltage equal to or higher than a voltage of the partial assembled battery. The power storage device control system according to claim 15, wherein
The monitoring device
A voltage dividing means for dividing the voltage of the battery assembly;
A sensor that connects to the partial battery and detects a state of the partial battery;
Processing means connected to the sensor by an insulated signal line to receive the output of the sensor and determining a reference potential by the voltage dividing means;
A power storage device control system comprising: The power storage device control system according to claim 15, wherein
The monitoring device is a power storage device control system having power supply means for converting a voltage of the partial assembled battery into a power supply voltage. The power storage device control system according to claim 19,
The power supply unit is a power storage device control system that converts the voltage of the connected assembled battery into a power supply voltage when power is supplied from a power supply unit of another monitoring device via an insulating unit. The power storage device control system according to claim 18,
The voltage dividing means is connected to both electrodes of the partial assembled battery and is higher than the negative electrode potential and higher than the positive electrode potential.
It is composed of a set resistor in which a plurality of resistors are connected in series so as to have a low intermediate potential,
A power storage device control system in which a reference potential of the processing means is the intermediate potential. A railway vehicle comprising the power storage device control system according to any one of claims 1 to 7 or any one of claims 15 to 18.

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