JP5270314B2 - System control unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device of a system for responding promptly to the demand of a driver. <P>SOLUTION: When a driver operates to switch on an ignition switch, the electric system is controlled so as to operate unless a battery monitor unit is in the process of determining existence of an abnormality. The battery monitor unit, when the driver operates to switch on the ignition switch (YES in S232), carries out a program including a step (S250) to interrupt the determination of existence of the abnormality. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a system control device, and more particularly, to a technique for interrupting an abnormality determination process being executed and controlling the system to operate when an operator's operation is performed on the system.

  Conventionally, computers capable of executing various programs are known. In such a computer, for example, when there is an interrupt request of another program during execution of a certain program, it is possible to interrupt the program being executed and execute another program.

  Japanese Patent Laid-Open No. 2008-90390 (Patent Document 1) has a plurality of debug modes. In one debug mode, the process does not shift to interrupt program processing during debugging, and in another debug mode, the interrupt program is not debugged. Disclosed is a microcomputer debugging system that shifts to processing.

According to the microcomputer debugging system described in this publication, for example, when a back system is applied to a DC motor control system using a microcomputer, the debugging is not interrupted by one debug mode when the DC motor is not connected. It is possible to debug a DC motor control program with a high degree of urgency. With the DC motor connected, debugging can be interrupted and a DC motor control program with a high degree of urgency can be executed.
JP 2008-90390 A

  However, in the microcomputer debugging system described in Japanese Patent Application Laid-Open No. 2008-90390, whether or not to shift to interrupt program processing is determined according to the debug mode. Even if there is a program interrupt request, the interrupt program is not processed. Therefore, for example, even if the execution of the program is requested by the judgment of personnel, the program may not be executed. For this reason, processing for a request from the operator may be delayed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a system control apparatus that can quickly respond to an operator's request.

  The control device of the system according to the first aspect of the present invention is not in the process of determining whether there is an abnormality when a determination means for determining whether there is an abnormality in the system and when the operator performs an operation on the system. In some cases, there are provided means for controlling the system to operate, and means for interrupting the determination of the presence or absence of an abnormality when an operation is performed by the operator before the determination of the presence or absence of the abnormality is completed.

  According to this configuration, when an operation on the system is performed by the operator, the system is controlled to operate when it is not in the middle of determining whether there is an abnormality. Therefore, if the presence or absence of abnormality is being determined, even if the operator performs any operation (for example, an operation for requesting activation) on the system, the system is not activated. Therefore, if the operator performs an operation before the determination of the presence / absence of abnormality is completed, the determination of the presence / absence of abnormality is interrupted. As a result, when the operator performs an operation on the system, the system can be controlled to operate. Therefore, it is possible to provide a control device for a system that can quickly respond to an operator's request.

  In the control device of the system according to the second invention, in addition to the configuration of the first invention, the determination means determines whether or not a predetermined condition is satisfied a plurality of times, and is determined to satisfy the condition. Means are included for determining that there is no abnormality when the number of times is determined, and for determining that there is an abnormality when the number of times determined in advance is not satisfied. The interruption means includes means for interrupting the determination of the presence or absence of an abnormality when an operation is performed by the operator before the initial determination of whether or not the condition is satisfied.

  According to this configuration, in order to determine whether or not the system is abnormal, it is determined a plurality of times whether or not a predetermined condition is satisfied. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation before the initial determination of whether or not the condition is satisfied, the determination of whether or not there is an abnormality is interrupted. Thereby, when the process required to determine whether or not the system is abnormal has not been completed, the determination of the presence or absence of abnormality can be interrupted promptly. Therefore, it is possible to quickly respond to the operator's request.

  In the control device of the system according to the third invention, in addition to the configuration of the first invention, the determination means determines whether or not a predetermined condition is satisfied a plurality of times, and is predetermined if the condition is satisfied Means are included for determining that there is no abnormality when the number of times is determined, and for determining that there is an abnormality when the number of times determined in advance is not satisfied. If the operator performs an operation before the second or later determination of whether or not the condition is satisfied, the interruption means is determined to satisfy the condition in the previous determination of whether or not the condition is satisfied. Means for interrupting the determination of the presence or absence of abnormality are included.

  According to this configuration, in order to determine whether or not the system is abnormal, it is determined a plurality of times whether or not a predetermined condition is satisfied. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation before the second or later determination of whether or not the condition is satisfied, whether or not there is an abnormality when it is determined that the condition is satisfied in the previous determination of whether or not the condition is satisfied Judgment is interrupted. As a result, when a part of the requirements to be satisfied in order to determine that the system is not abnormal is satisfied, the determination of the presence or absence of abnormality can be quickly interrupted. Therefore, it is possible to quickly respond to the operator's request after tentatively confirming that there is no abnormality.

  In the control device of the system according to the fourth invention, in addition to the configuration of the first invention, the determination means determines whether or not a predetermined condition is satisfied a plurality of times, and is predetermined if the condition is satisfied Means are included for determining that there is no abnormality when the number of times is determined, and for determining that there is an abnormality when the number of times determined in advance is not satisfied. If it is determined that the interruption means does not satisfy the condition in the previous determination whether or not the condition is satisfied if the operation is performed by the operator before the second or later determination of whether or not the condition is satisfied In addition, there are included means for continuing the determination of whether or not there is an abnormality, and means for interrupting the determination of whether or not there is an abnormality when it is determined that the condition is satisfied in the current determination of whether or not the condition is satisfied.

  According to this configuration, in order to determine whether or not the system is abnormal, it is determined a plurality of times whether or not a predetermined condition is satisfied. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation before the second or later determination of whether or not the condition is satisfied, whether or not there is an abnormality if it is determined that the condition is not satisfied in the previous determination of whether or not the condition is satisfied This determination is continued. When it is determined that the condition is satisfied in the second and subsequent determinations as to whether or not the condition is satisfied, the determination of whether there is an abnormality is interrupted. As a result, when a part of the requirements to be satisfied in order to determine that the system is not abnormal is satisfied, the determination of the presence or absence of abnormality can be quickly interrupted. Therefore, it is possible to quickly respond to the operator's request after tentatively confirming that there is no abnormality.

  In the control device of the system according to the fifth invention, in addition to the configurations of the second to fourth inventions, the system is provided with an assembled battery composed of a plurality of cells, and a circuit for detecting the voltage of each cell. A plurality of electrical systems are provided for each cell. The determination means includes means for executing the detection of the voltage of each cell in order by a plurality of circuits a plurality of times. The condition is that all the cells have the same voltage detected by a plurality of circuits.

  According to this configuration, an assembled battery including a plurality of cells is provided, and a plurality of circuits for detecting the voltage of each cell are provided for each cell, and the voltage of each cell detected by the plurality of circuits is provided. It is possible to control the electrical system in which the presence or absence of abnormality is determined by determining whether or not the same condition is satisfied a plurality of times so as to quickly respond to the operator's request.

  A system control apparatus according to a sixth aspect of the invention is a system control apparatus provided with an assembled battery composed of a plurality of cells and a plurality of circuits for detecting the voltage of each cell provided for each cell. . This control device executes the detection of the voltage of each cell in order by a plurality of circuits a plurality of times, and satisfies the condition that the voltage of each cell detected by the plurality of circuits is the same in all cells. If it is determined multiple times, if it is determined a predetermined number of times if the condition is satisfied, it is determined that there is no abnormality in the system, and if it is determined only a predetermined number of times if the condition is not satisfied, the system When a determination means for determining that there is an abnormality in the system and an operation on the system by the operator is performed, control is performed so that the system is activated when it is not in the process of determining whether there is an abnormality in the system. Control means, and interruption means for interrupting the determination of the presence / absence of an abnormality when an operation is performed by the operator before the first determination of whether or not the condition is satisfied is completed.

  According to this configuration, the voltage of each cell is sequentially detected by the plurality of circuits provided for each of the plurality of cells constituting the assembled battery. By determining whether or not the condition that the voltages of the respective cells detected by the plurality of circuits are the same is satisfied a plurality of times, it is determined whether or not the system is abnormal. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation on the system before the first determination of whether or not the condition is satisfied, the determination of whether there is an abnormality is interrupted. Thereby, when the process required to determine whether or not the system is abnormal has not been completed, the determination of the presence or absence of abnormality can be interrupted promptly. Therefore, it is possible to provide a control device for a system that can quickly respond to an operator's request.

  A control apparatus for a system according to a seventh aspect is a control apparatus for a system in which an assembled battery composed of a plurality of cells is provided, and a plurality of circuits for detecting the voltage of each cell are provided for each cell. . This control device executes the detection of the voltage of each cell in order by a plurality of circuits a plurality of times, and satisfies the condition that the voltage of each cell detected by the plurality of circuits is the same in all cells. If it is determined multiple times, if it is determined a predetermined number of times if the condition is satisfied, it is determined that there is no abnormality in the system, and if it is determined only a predetermined number of times if the condition is not satisfied, the system When a determination means for determining that there is an abnormality in the system and an operation on the system by the operator is performed, control is performed so that the system is activated when it is not in the process of determining whether there is an abnormality in the system. If the operation by the operator is completed before the second and subsequent determinations as to whether or not the condition is satisfied, the condition is determined in the previous determination as to whether or not the condition is satisfied. And a interruption means for interrupting the determination of the presence or absence of abnormality when it is determined that plus.

  According to this configuration, the voltage of each cell is sequentially detected by the plurality of circuits provided for each of the plurality of cells constituting the assembled battery. By determining whether or not the condition that the voltages of the respective cells detected by the plurality of circuits are the same is satisfied a plurality of times, it is determined whether or not the system is abnormal. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation before the second or later determination of whether or not the condition is satisfied, whether or not there is an abnormality when it is determined that the condition is satisfied in the previous determination of whether or not the condition is satisfied Judgment is interrupted. As a result, when a part of the requirements to be satisfied in order to determine that the system is not abnormal is satisfied, the determination of the presence or absence of abnormality can be quickly interrupted. Therefore, after tentatively confirming that there is no abnormality, it is possible to quickly interrupt the determination of whether there is an abnormality. As a result, it is possible to provide a control device for a system that can quickly respond to an operator's request.

  A system control apparatus according to an eighth aspect of the invention is a system control apparatus in which an assembled battery including a plurality of cells is provided, and a plurality of circuits for detecting the voltage of each cell are provided for each cell. . This control device executes the detection of the voltage of each cell in order by a plurality of circuits a plurality of times, and satisfies the condition that the voltage of each cell detected by the plurality of circuits is the same in all cells. If it is determined multiple times, if it is determined a predetermined number of times if the condition is satisfied, it is determined that there is no abnormality in the system, and if it is determined only a predetermined number of times if the condition is not satisfied, the system When a determination means for determining that there is an abnormality in the system and an operation on the system by the operator is performed, control is performed so that the system is activated when it is not in the process of determining whether there is an abnormality in the system. If the operation by the operator is completed before the second and subsequent determinations as to whether or not the condition is satisfied, the condition is determined in the previous determination as to whether or not the condition is satisfied. If it is determined that the condition is not satisfied, the determination of the presence / absence of abnormality is continued, and the determination of the presence / absence of abnormality is interrupted when it is determined that the condition is satisfied in the second and subsequent determinations as to whether the condition is satisfied. Interruption means.

  According to this configuration, the voltage of each cell is sequentially detected by the plurality of circuits provided for each of the plurality of cells constituting the assembled battery. By determining whether or not the condition that the voltages of the cells detected by a plurality of circuits are the same is satisfied a plurality of times, it is determined whether or not there is an abnormality in the system. If the condition is satisfied, it is determined that there is no abnormality when it is determined a predetermined number of times. If it is determined that the condition is not satisfied a predetermined number of times, it is determined that there is an abnormality. If the operator performs an operation before the second or later determination of whether or not the condition is satisfied, whether or not there is an abnormality if it is determined that the condition is not satisfied in the previous determination of whether or not the condition is satisfied This determination is continued. Thereafter, when it is determined that the condition is satisfied in the second and subsequent determinations as to whether or not the condition is satisfied, the determination of whether there is an abnormality is interrupted. As a result, when a part of the requirements to be satisfied in order to determine that the system is not abnormal is satisfied, the determination of the presence or absence of abnormality can be quickly interrupted. Therefore, after tentatively confirming that there is no abnormality, it is possible to quickly interrupt the determination of whether there is an abnormality. As a result, it is possible to provide a control device for a system that can quickly respond to an operator's request.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  With reference to FIG. 1, a hybrid vehicle equipped with an electric system according to an embodiment of the present invention will be described. The hybrid vehicle includes an engine 100, a first MG (Motor Generator) 110, a second MG 120, a power split mechanism 130, a speed reducer 140, and a battery 150.

  The hybrid vehicle travels with driving force from at least one of engine 100 and second MG 120. Instead of the hybrid vehicle, an electric vehicle or a fuel cell vehicle that travels only by the driving force from the motor may be used.

  Engine 100, first MG 110, and second MG 120 are connected via power split mechanism 130. The power generated by the engine 100 is divided into two paths by the power split mechanism 130. One is a path for driving the front wheels 160 via the speed reducer 140. The other is a path for driving the first MG 110 to generate power.

  First MG 110 is a three-phase AC rotating electric machine including a U-phase coil, a V-phase coil, and a W-phase coil. First MG 110 generates power using the power of engine 100 divided by power split mechanism 130. The electric power generated by first MG 110 is selectively used according to the running state of the vehicle and the state of charge (SOC) of battery 150. For example, during normal traveling, the electric power generated by first MG 110 becomes electric power for driving second MG 120 as it is. On the other hand, when the SOC of battery 150 is lower than a predetermined value, the power generated by first MG 110 is converted from AC to DC by an inverter described later. Thereafter, the voltage is adjusted by a converter described later and stored in the battery 150.

When first MG 110 acts as a generator, first MG 110 generates a negative torque. Here, the negative torque means a torque that becomes a load on engine 100. When first MG 110 is supplied with electric power and acts as a motor, first MG 110 generates a positive torque. Here, the positive torque means a torque that does not become a load on the engine 100, that is, a torque that assists the rotation of the engine 100. The same applies to the second MG 120.

  Second MG 120 is a three-phase AC rotating electric machine including a U-phase coil, a V-phase coil, and a W-phase coil. Second MG 120 is driven by at least one of the electric power stored in battery 150 and the electric power generated by first MG 110.

  The driving force of second MG 120 is transmitted to front wheel 160 via reduction gear 140. Thereby, second MG 120 assists engine 100 or causes the vehicle to travel by the driving force from second MG 120. The rear wheels may be driven instead of or in addition to the front wheels 160.

  During regenerative braking of the hybrid vehicle, the second MG 120 is driven by the front wheels 160 via the speed reducer 140, and the second MG 120 operates as a generator. Thus, second MG 120 operates as a regenerative brake that converts braking energy into electric power. The electric power generated by second MG 120 is stored in battery 150.

  Power split device 130 includes a planetary gear including a sun gear, a pinion gear, a carrier, and a ring gear. The pinion gear engages with the sun gear and the ring gear. The carrier supports the pinion gear so that it can rotate. The sun gear is connected to the rotation shaft of first MG 110. The carrier is connected to the crankshaft of engine 100. The ring gear is connected to the rotation shaft of second MG 120 and speed reducer 140.

  Engine 100, first MG 110 and second MG 120 are connected via power split mechanism 130 formed of a planetary gear, so that the rotational speeds of engine 100, first MG 110 and second MG 120 are collinear as shown in FIG. The relationship is connected by a straight line.

  Returning to FIG. 1, the battery 150 is an assembled battery including a plurality of cells. The battery 150 is configured, for example, by further connecting a plurality of battery modules in which a plurality of cells are integrated in series. Battery 150 is, for example, a lithium ion battery. The voltage of the battery 150 at the time of full charge is, for example, about 200V.

  In the present embodiment, engine 100 is controlled by EFI (Electronic Fuel Injection) -ECU (Electronic Control Unit) 170. First MG 110 and second MG 120 are controlled by MG-ECU 172. The EFI-ECU 170 and the MG-ECU 172 are connected to a PM (Power Train Manager) -ECU 174 so as to be capable of bidirectional communication.

  PM-ECU 174 has a function of managing EFI-ECU 170 and MG-ECU 172. For example, activation (power on) and stop (power off) of EFI-ECU 170 and MG-ECU 172 are controlled by a command signal from PM-ECU 174.

  PM-ECU 174 commands EFI-ECU 170 for the target output and target torque of engine 100, and commands MG-ECU 172 for the generated power of first MG 110 and the driving power of second MG 120, for example.

  PM-ECU 174 can be stopped by a command from PM-ECU 174 itself. The activation of PM-ECU 174 is managed by power supply ECU 176. For example, when ignition switch 178 is turned on by a driver's operation, a start command is output from power supply ECU 176 to PM-ECU 174. PM-ECU 174 is activated in response to the activation command. When the PM-ECU 174 is activated, the PM-ECU 174 controls the electric system to operate. That is, PM-ECU 174 controls the electric system to operate when an operation by the driver is performed. The power supply ECU 176 is always activated as long as power is continuously supplied from an auxiliary battery (not shown).

  With reference to FIG. 3, the electric system of the hybrid vehicle will be further described. In the electric system of the hybrid vehicle, in addition to first MG 110, second MG 120 and battery 150, converter 200, first inverter 210, second inverter 220 and SMR (System Main Relay) 230 are provided.

  Converter 200 includes a reactor, two npn transistors, and two diodes. Reactor has one end connected to the positive electrode side of battery 150 and the other end connected to a connection point of two npn transistors.

  Two npn-type transistors are connected in series. The npn type transistor is controlled by the MG-ECU 172. A diode is connected between the collector and emitter of each npn transistor so that a current flows from the emitter side to the collector side.

For example, an IGBT (Insulated Gate Bipolar Transistor) can be used as the npn transistor. Power MOSFE instead of npn transistor
A power switching element such as T (Metal Oxide Semiconductor Field-Effect Transistor) can be used.

  When the electric power discharged from the battery 150 is supplied to the first MG 110 or the second MG 120, the voltage is boosted by the converter 200. Conversely, when charging the battery 150 with the power generated by the first MG 110 or the second MG 120, the voltage is stepped down by the converter 200.

  First inverter 210 includes a U-phase arm, a V-phase arm, and a W-phase arm. The U-phase arm, V-phase arm and W-phase arm are connected in parallel. Each of the U-phase arm, the V-phase arm, and the W-phase arm has two npn transistors connected in series. Between the collector and emitter of each npn-type transistor, a diode for passing a current from the emitter side to the collector side is connected. A connection point of each npn transistor in each arm is connected to an end portion different from the neutral point 112 of each coil of the first MG 110.

  First inverter 210 converts a direct current supplied from battery 150 into an alternating current, and supplies the alternating current to first MG 110. In addition, first inverter 210 converts the alternating current generated by first MG 110 into a direct current.

  Second inverter 220 includes a U-phase arm, a V-phase arm, and a W-phase arm. The U-phase arm, V-phase arm and W-phase arm are connected in parallel. Each of the U-phase arm, the V-phase arm, and the W-phase arm has two npn transistors connected in series. Between the collector and emitter of each npn-type transistor, a diode for passing a current from the emitter side to the collector side is connected. A connection point of each npn transistor in each arm is connected to an end portion different from the neutral point 122 of each coil of the second MG 120.

Second inverter 220 converts the direct current supplied from battery 150 into an alternating current, and supplies the alternating current to second MG 120. Second inverter 220 converts the alternating current generated by second MG 120 into a direct current.

  Converter 200, first inverter 210 and second inverter 220 are controlled by MG-ECU 172.

  SMR 230 is provided between battery 150 and converter 200. The SMR 230 is a relay that switches between a connected state and a disconnected state of the battery 150 and the electrical system. When SMR 230 is open, battery 150 is disconnected from the electrical system. When SMR 230 is closed, battery 150 is connected to the electrical system.

  That is, when SMR 230 is in an open state, battery 150 is electrically disconnected from converter 200 and the like. When SMR 230 is closed, battery 150 is electrically connected to converter 200 and the like.

  The state of SMR 230 is controlled by PM-ECU 174. For example, when PM-ECU 174 is activated, SMR 230 is closed. When PM-ECU 174 stops, SMR 230 is opened.

  Referring to FIG. 4, the electric system is further provided with a battery monitoring unit 240 for monitoring the voltage of battery 150 in addition to EFI-ECU 170, MG-ECU 172, PM-ECU 174 and power supply ECU 176. The battery monitoring unit 240 detects the voltage of each cell of the battery 150 and monitors the charge state of each cell.

  The battery monitoring unit 240 includes two systems of voltage detection circuits 251 and 252 provided for each cell so as to detect the voltage of each cell. That is, two voltage detection circuits 251 and 252 are provided for each cell. In FIG. 4, two voltage detection circuits 251 and 252 provided for one cell among a plurality of cells are shown as a representative example. Three or more voltage detection circuits may be provided for each cell.

  The battery monitoring unit 240 detects the voltage of each cell of the battery 150 and, in addition to the function of monitoring the charging state of each cell, whether or not there is an abnormality in the electronic system, more specifically, the battery monitoring unit 240 itself. It has a self-diagnosis function to determine whether or not.

  The battery monitoring unit 240 sequentially determines whether or not the voltages detected by the two voltage detection circuits are the same for each of the plurality of cells, and the voltages detected by the two voltage detection circuits are the same. Whether or not the battery monitoring unit 240 itself has an abnormality is determined based on the result of executing the determination for each of the plurality of cells in order several times.

  That is, in all the cells, it is determined a plurality of times whether or not the condition that the voltages of the cells detected by the two voltage detection circuits are the same is satisfied.

  For example, as shown in FIG. 5, if it is determined three times that the condition that the voltages of the respective cells detected by the two voltage detection circuits in all the cells are the same is satisfied, the battery monitoring unit 240 is not abnormal ( Normal).

  Conversely, as shown in FIG. 6, if it is determined three times that the condition that the voltages of the cells detected by the two voltage detection circuits are the same in all the cells is not satisfied, the battery monitoring unit 240 is abnormal. It is determined that That is, if it is determined three times that the voltages detected by the two voltage detection circuits are different in at least one of the plurality of cells, the battery monitoring unit 240 is determined to be abnormal.

  In addition, it is determined that the voltage of each cell detected by the two voltage detection circuits in all the cells is equal to or less than the predetermined number of times less than 3 times or more than 3 times. In this case, it may be determined that the battery monitoring unit 240 is normal or abnormal. In addition, the method for determining whether or not the battery monitoring unit 240 is abnormal is not limited thereto.

  The functions of PM-ECU 174 and battery monitoring unit 240 will be described with reference to FIG. Note that the functions described below may be realized by software or hardware.

  PM-ECU 174 includes a control unit 180. When the operation is performed so that the ignition switch 178 is turned on by the driver, the control unit 180 causes the electric system to operate when the battery monitoring unit 240 is not in the middle of determining whether there is an abnormality. Control. That is, the electrical system is activated.

  Battery monitoring unit 240 includes a determination unit 182 and an interruption unit 184. The determination unit 182 determines whether there is an abnormality in the electronic system, more specifically, the voltage detection circuit of the battery monitoring unit 240.

  The determination unit 182 sequentially determines whether or not the voltages detected by the two voltage detection circuits of the battery monitoring unit 240 are the same for each of the plurality of cells. Further, the determination unit 182 determines whether or not a condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied a plurality of times, and determines that the condition is satisfied three times. It is determined that the unit 240 is not abnormal (normal). Conversely, if it is determined three times that the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is not satisfied, it is determined that the battery monitoring unit 240 is abnormal.

  If the driver performs an operation so that the ignition switch 178 is turned on before the determination of whether there is an abnormality is completed, the interruption unit 184 interrupts the determination of whether there is an abnormality.

  More specifically, as shown in FIG. 8, the ignition is performed by the driver before the first determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied. When the operation is performed so that the switch 178 is turned on, the determination of whether there is an abnormality is immediately interrupted.

  As a result, when any operation required to determine whether or not the electrical system is abnormal when an operation on the electrical system is performed by the driver, the determination of the presence or absence of the abnormality is promptly interrupted. be able to. Therefore, it is possible to quickly control the electric system to operate. As a result, it is possible to quickly respond to the driver's request.

  As shown in FIG. 9, the ignition switch 178 is turned on by the driver before the second determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied. When this operation is performed, if this condition is satisfied in the first determination (first determination) whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. When the determination is made, the determination of whether there is an abnormality is immediately interrupted.

  On the other hand, if it is determined that this condition is not satisfied in the initial determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, the determination of whether there is an abnormality continues. Is done. After that, if it is determined that this condition is satisfied in the second and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is determined, whether or not there is an abnormality is determined. Interrupted.

  As shown in FIG. 10, the ignition switch 178 is turned on by the driver before the third determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied. When it is determined that this condition is satisfied in the second determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. The determination of the presence or absence of abnormality is immediately interrupted.

  On the other hand, if it is determined that this condition is not satisfied in the second determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, whether or not there is an abnormality is determined. Will continue. Thereafter, if it is determined that this condition is satisfied in the third and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, the determination of whether or not there is an abnormality is made. Interrupted.

  As shown in FIG. 11, the ignition switch 178 is turned on by the driver before the fourth determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. If it is determined that this condition is satisfied in the third determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. The determination of the presence or absence of abnormality is immediately interrupted.

  On the other hand, if it is determined that this condition is not satisfied in the third determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, the determination as to whether there is an abnormality is made. Will continue. Thereafter, when it is determined that this condition is satisfied in the fourth determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied, the determination of whether or not there is an abnormality is made. Interrupted.

  As shown in FIG. 12, the ignition switch 178 is turned on by the driver before completing the fifth determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. If it is determined that this condition is satisfied in the fourth determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied. The determination of the presence or absence of abnormality is immediately interrupted.

  That is, an operation is performed so that the ignition switch 178 is turned on by the driver before the second and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells are satisfied. When it is determined that this condition is satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, Judgment is interrupted immediately.

  Further, the driver operates the ignition switch 178 to be turned on before the second and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells are satisfied. When it is determined that this condition is not satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, Judgment continues. Thereafter, if this condition is satisfied in the second and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied, more specifically, in the second to fourth determinations. When the determination is made, the determination of whether or not there is an abnormality is interrupted.

  Thereby, when a part of requirements to be satisfied in order to determine that the electrical system is not abnormal is satisfied, the determination of the presence or absence of abnormality can be interrupted quickly. Therefore, after tentatively confirming that there is no abnormality, it is possible to quickly control the electric system to operate. As a result, it is possible to quickly respond to the driver's request.

  It should be noted that a determination result (for example, a counter) obtained before interrupting the determination of the presence / absence of abnormality may be stored and carried over when the determination of the presence / absence of abnormality is resumed later.

  A control structure of a program executed by PM-ECU 174 will be described with reference to FIG. The program described below is executed, for example, when PM-ECU 174 receives an activation command from power supply ECU 176, that is, when the driver performs an operation to turn on ignition switch 178.

  In S100, PM-ECU 174 determines whether battery monitoring unit 240 is currently determining whether there is an abnormality. If battery monitoring unit 240 is determining whether there is an abnormality (YES in S100), this process ends. If battery monitoring unit 240 is not currently determining whether there is an abnormality (NO in S100), the process proceeds to S102.

In S102, PM-ECU 174 controls the electric system to operate.
With reference to FIG. 14, a control structure (part 1) of a program executed by battery monitoring unit 240 will be described.

  In S200, battery monitoring unit 240 determines whether or not the driver has performed an operation so that ignition switch 178 is turned off. If the driver operates to turn off ignition switch 178 (YES in S200), the process proceeds to S202. If not (NO in S200), the process proceeds to S200.

  In S202, battery monitoring unit 240 detects the voltage of each cell of battery 150 in turn using two voltage detection circuits provided for each cell.

  In S204, battery monitoring unit 240 determines whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells of battery 150 is satisfied. If the condition that the respective voltages detected by the two voltage detection circuits are the same in all the cells of battery 150 is satisfied (YES in S204), the process proceeds to S210. If not (NO in S204), the process proceeds to S220.

  In S210, battery monitoring unit 240 determines whether or not the determination is made three times when the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. If it is determined three times that the condition that the voltages detected by the two voltage detection circuits are the same in all the cells is satisfied (YES in S210), the process proceeds to S212. If not (NO in S210), the process returns to S202.

  In S212, battery monitoring unit 240 determines that battery monitoring unit 240 is not abnormal (normal). Thereafter, this process ends.

  In S220, battery monitoring unit 240 determines whether or not it is determined three times that the condition that the voltages detected by the two voltage detection circuits are the same in all cells is not satisfied. That is, it is determined whether or not at least one of the plurality of cells has been determined three times when the voltages detected by the two voltage detection circuits are different.

  If it is determined three times that the condition that the voltages detected by the two voltage detection circuits are the same in all cells is not satisfied (YES in S220), the process proceeds to S222. If not (NO in S220), the process returns to S202.

  In S222, battery monitoring unit 240 determines that battery monitoring unit 240 is abnormal. Thereafter, this process ends.

  With reference to FIG. 15, the control structure (part 2) of the program executed by battery monitoring unit 240 will be described.

  In S230, battery monitoring unit 240 determines whether battery monitoring unit 240 is in the process of determining whether there is an abnormality. That is, it is determined whether or not it is before the determination of the presence or absence of abnormality is completed. If it is in the middle of determining whether battery monitoring unit 240 is abnormal (YES in S230), the process proceeds to S232. Otherwise (NO at S230), this process ends.

  In S232, battery monitoring unit 240 determines whether or not an operation has been performed by driver so that ignition switch 178 is turned on. If the driver operates to turn on ignition switch 178 (YES in S232), the process proceeds to S240. If not (NO in S232), the process returns to S230.

  In S240, the battery monitoring unit 240 determines that the ignition switch 178 is turned on by the driver before the first determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. It is determined whether or not an operation has been performed to turn it on.

  When an operation is performed so that the ignition switch 178 is turned on by the driver before the initial determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied is completed. (YES in S240), the process proceeds to S250. If not (NO in S240), the process proceeds to S242.

  In S242, whether or not battery monitoring unit 240 has determined that this condition is satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits in all cells are the same is satisfied. Determine.

  If it is determined that this condition is satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied (YES in S242), the process proceeds to S250. Moved. If not (NO in S242), the process proceeds to S244.

  In S244, battery monitoring unit 240 continues to determine whether there is an abnormality. In S246, battery monitoring unit 240 satisfies this condition in the second to fourth determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. It is determined whether it has been determined.

  When it is determined that this condition is satisfied in the second to fourth determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied (YES in S244). The process proceeds to S250. If not (NO in S244), the process returns to S230.

In S250, battery monitoring unit 240 interrupts the determination of whether there is an abnormality.
The operation of PM-ECU 174 and battery monitoring unit 240 in the present embodiment based on the above-described structure and flowchart will be described.

  For example, when the driver moves using a hybrid vehicle and then gets off the vehicle, when the driver operates to turn off ignition switch 178 (YES in S200), battery monitoring for monitoring the charging state of battery 150 is performed. By the self-diagnosis function of the unit 240, the voltage of each cell of the battery 150 is sequentially detected using two voltage detection circuits provided for each cell (S202).

  When the condition that the respective voltages detected by the two voltage detection circuits are the same in all the cells of battery 150 is satisfied (YES in S204), the detection is performed by the two voltage detection circuits in all the cells. If the condition that the voltages are the same is satisfied, it is determined whether or not three determinations have been made (S210).

  If the condition that the voltages detected by the two voltage detection circuits in all the cells are the same is determined three times (YES in S210), it is determined that battery monitoring unit 240 is not abnormal (normal). (S212). That is, it is determined that the battery monitoring unit 240 is normal.

  Conversely, if it is determined three times that the condition that the voltages detected by the two voltage detection circuits are the same in all cells is not satisfied (YES in S220), it is determined that battery monitoring unit 240 is abnormal. (S222). That is, it is determined that the battery monitoring unit 240 is abnormal.

  Thereby, the presence or absence of abnormality of the battery monitoring unit 240 can be determined every time the ignition switch 178 is turned off.

  On the other hand, when an operation is performed so that ignition switch 178 is turned on by the driver, if the presence or absence of abnormality is not being determined by battery monitoring unit 240 (NO in S100), the electric system is activated. Control is performed (S102). That is, the electrical system is activated.

  Therefore, for example, when the operation is performed so that the ignition switch 178 is once turned off and then immediately turned on, the battery monitoring unit 240 is determining whether or not there is an abnormality. Some can delay the startup of the electrical system.

  Therefore, while the battery monitoring unit 240 is determining whether or not there is an abnormality (YES in S230), if the driver performs an operation to turn on the ignition switch 178 (YES in S232), a predetermined When the condition is satisfied, the determination of whether there is an abnormality is interrupted (S250).

  In other words, the driver performs an operation so that the ignition switch 178 is turned on before the initial determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. Then (YES in S240), determination of presence / absence of abnormality by battery monitoring unit 240 is interrupted (S250).

  The driver performs an operation so that the ignition switch 178 is turned on before completing the second and subsequent determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied. Then (NO in S240), when it is determined that this condition is satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied (S242). At YES), the battery monitoring unit 240 determines whether there is an abnormality (S250).

  On the other hand, if it is determined that this condition is not satisfied in the previous determination as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied (NO in S242), an abnormality occurs. The determination of the presence or absence of is continued (S244).

  Thereafter, when it is determined that this condition is satisfied in the second to fourth determinations as to whether or not the condition that the voltages detected by the two voltage detection circuits are the same in all cells is satisfied (in S246). YES), determination of the presence or absence of abnormality by the battery monitoring unit 240 is interrupted (S250).

  Thereby, when operation by the driver with respect to an electric system is made, it can control to operate an electric system. Therefore, it is possible to quickly respond to the operator's request.

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

It is a schematic block diagram which shows a hybrid vehicle. It is a figure which shows the alignment chart of a power split device. It is a figure (the 1) which shows the electric system of a hybrid vehicle. FIG. 2 is a second diagram illustrating an electrical system of a hybrid vehicle. It is a figure which shows the combination of the determination result in case a battery monitoring unit is normal. It is a figure which shows the combination of the determination result in case a battery monitoring unit is abnormal. It is a functional block diagram of PM-ECU and a battery monitoring unit. It is FIG. (1) which shows the combination of the determination result by a battery monitoring unit. It is a figure (the 2) which shows the combination of the determination result by a battery monitoring unit. It is FIG. (3) which shows the combination of the determination result by a battery monitoring unit. It is FIG. (The 4) which shows the combination of the determination result by a battery monitoring unit. It is FIG. (5) which shows the combination of the determination result by a battery monitoring unit. It is a flowchart which shows the control structure of the program which PM-ECU performs. It is a flowchart (the 1) which shows the control structure of the program which a battery monitoring unit performs. It is a flowchart (the 2) which shows the control structure of the program which a battery monitoring unit performs.

Explanation of symbols

  100 Engine, 110 1st MG, 120 2nd MG, 130 Power split mechanism, 140 Reducer, 150 Battery, 160 Front wheel, 170 EFI-ECU, 172 MG-ECU, 174 PM-ECU, 176 Power supply ECU, 178 Ignition switch, 180 Control unit, 182 determination unit, 184 interruption unit, 200 converter, 210 first inverter, 220 second inverter, 230 SMR, 240 battery monitoring unit, 251, 252 voltage detection circuit.

Claims (3)

A determination means for determining whether or not the system is abnormal;
Means for controlling the system to operate when it is not in the process of determining whether there is an abnormality when the operator performs an operation on the system;
Means for interrupting the determination of the presence or absence of an abnormality when an operation by the operator is made before the determination of the presence or absence of an abnormality is completed,
The determination means determines whether or not a predetermined condition is satisfied a plurality of times, and determines that there is no abnormality when the predetermined condition is determined a predetermined number of times and the condition is not satisfied. Means for determining that there is an abnormality when determined a predetermined number of times;
The interruption means is
If it is determined that the condition is not satisfied in the previous determination as to whether or not the condition is satisfied, if an operation by the operator is performed before the second or subsequent determination as to whether or not the condition is satisfied. Means for continuing to determine whether there is an abnormality,
And means for interrupting the determination of the presence or absence of abnormality when it is determined that the condition is satisfied in the determination of the second and subsequent whether the condition is satisfied, the control device of the system. The system is an electrical system in which an assembled battery including a plurality of cells is provided, and a plurality of circuits for detecting the voltage of each of the cells are provided for each of the cells,
The determination means includes means for executing a plurality of times that the voltages of the cells are sequentially detected by the plurality of circuits,
2. The system control device according to claim 1 , wherein the condition is a condition that a voltage of each of the cells detected by the plurality of circuits is the same in all cells. A control apparatus for a system in which a battery pack including a plurality of cells is provided, and a plurality of circuits for detecting the voltage of each of the cells is provided for each of the cells,
Whether the voltage of each of the cells is sequentially detected by the plurality of circuits a plurality of times and whether the voltage of each of the cells detected by the plurality of circuits is the same in all cells It is determined whether or not a plurality of times, and it is determined that there is no abnormality in the system when it is determined a predetermined number of times when the condition is satisfied, and the predetermined number of times is determined when the condition is not satisfied. A determination means for determining that there is an abnormality in the system,
Control means for controlling the system to operate when it is not in the process of determining whether there is an abnormality in the system when an operation is performed on the system by the operator;
If it is determined that the condition is not satisfied in the previous determination as to whether or not the condition is satisfied, if an operation by the operator is performed before the second or subsequent determination as to whether or not the condition is satisfied. Continuation of the determination of the presence or absence of abnormality, provided with interruption means for interrupting the determination of the presence or absence of abnormality when it is determined that the condition is satisfied in the second or subsequent determination of whether or not the condition is satisfied, System control unit.

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