JP2005160132A - Device for determining abnormality of cooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine the abnormality of a cooler for the battery or the capacitor of a vehicle. <P>SOLUTION: A hybrid ECU executes a program which contains a step (S100) of detecting the variation ΔT(A) of the temperature of the first battery block, the variation ΔT(B) of the temperature of the second battery block, and the variation ΔT(C) of the temperature of the third battery block, a step (S200) of comparing the variation of the temperature of each battery block with the next, a step (S300) of determining whether or not the variation of the temperature of at least any one battery block out of a plurality of battery blocks is deviated from the variation of the temperature of other battery blocks, and a step (S400) of determining that the cooler is abnormal in case that the variation of the temperature of at least any one battery block is deviated from the variation of the temperature of other battery blocks (YES in S300). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an abnormality determination device for a cooling device, and more particularly to an abnormality determination device for a cooling device that cools a power storage mechanism that is divided and mounted.

  In recent years, attention has been focused on hybrid vehicles, fuel cell vehicles, electric vehicles, and the like that travel with driving force from a motor as one of countermeasures for environmental problems. Such a vehicle is equipped with a battery, a capacitor, and the like that store electric power supplied to the motor. Batteries and capacitors generate heat when charging and discharging power. The battery or capacitor that has generated heat is cooled by the cooling air blown by the cooling fan.

  Japanese Patent Laying-Open No. 2001-86601 (Patent Document 1) discloses a cooling fan failure detection device for a hybrid vehicle that detects failure of a cooling fan that cools a battery. The cooling fan failure detection device described in Patent Document 1 requires an engine that outputs a driving force of a vehicle, a motor that generates an auxiliary driving force that assists the output of the engine, an electric power supplied to the motor, and an auxiliary driving force. Failure of a cooling fan of a hybrid vehicle including a battery that charges electric energy obtained by operating the motor as a generator when there is not, and a cooling fan that cools the battery is detected. This cooling fan failure detection device calculates the estimated temperature change of the battery from the temperature difference calculation unit that calculates the cooling capacity of the cooling fan, the input / output power calculation unit that calculates the heat generation amount of the battery, and the heat generation amount and cooling capacity. Calculated in the assumed temperature change calculation unit, the actual temperature change calculation unit that calculates the actual battery temperature change, and the assumed temperature change and actual temperature change calculation unit calculated in the assumed temperature change calculation unit A failure determination unit that detects a failure of the cooling fan based on a result of comparison with the actual temperature change amount.

According to the cooling fan failure detection device described in this publication, based on the result of comparing the assumed temperature change amount calculated by the assumed temperature change amount calculation unit and the actual temperature change amount calculated by the actual temperature change amount calculation unit. A failure of the cooling fan can be detected. Further, since the failure is determined based on the change amount of the battery temperature, it is possible to detect that the cooling capacity is lowered due to the intake port or the exhaust port being blocked.
JP 2001-86601 A

  However, in the invention described in Patent Document 1, an abnormality is determined by comparing the assumed temperature change amount with the actual temperature change amount. For this reason, for example, even if there is no abnormality in the cooling device, but the outside air temperature is high and the temperature of the battery or the like is difficult to decrease, and the actual temperature change amount does not match the assumed temperature change amount, it is determined that the cooling device is abnormal. End up. As a result, when an unexpected external factor acts on the battery, there is a possibility that an abnormality of the cooling device may be erroneously determined.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cooling device abnormality determination device capable of accurately determining a cooling device abnormality.

  A cooling device abnormality determination device according to a first aspect of the present invention determines an abnormality of a cooling device that cools a power storage mechanism mounted on a vehicle. A plurality of power storage mechanisms are divided and mounted on the vehicle. The abnormality determination device is based on the result of comparing the acquisition unit for acquiring information on cooling of each power storage mechanism, the comparison unit for comparing information on cooling of each power storage mechanism, and the information on cooling of each power storage mechanism. Determining means for determining abnormality of the cooling device.

  According to the first invention, the acquisition unit acquires information regarding cooling of each power storage mechanism, and the comparison unit compares the acquired information. The determination unit determines abnormality of the cooling device based on a result of comparing information regarding cooling of each power storage mechanism. Thereby, since the information regarding the cooling of each power storage mechanism is relatively compared to determine the abnormality of the cooling device, the abnormality of the cooling device is determined without using the assumed value or the estimated value regarding the state of the power storage mechanism. Can do. As a result, it is possible to provide an abnormality determination device for a cooling device that can suppress the influence of external factors on the abnormality determination result and can accurately determine the abnormality of the cooling device.

  In the abnormality determination device for the cooling device according to the second invention, in addition to the configuration of the first invention, the comparison means determines whether the information related to cooling of the power storage mechanism is different from the information related to cooling of the other power storage mechanisms. Means for comparing. The determination unit determines that the cooling device is abnormal when information regarding cooling of at least one power storage mechanism is different from information regarding cooling of another power storage mechanism among information regarding cooling of each power storage mechanism. Including means.

  According to the second invention, the comparison unit compares whether the information related to cooling of the power storage mechanism is different from the information related to cooling of the other power storage mechanism, and at least one of the information related to cooling of each power storage mechanism. When the information regarding the cooling of one power storage mechanism is different from the information regarding the cooling of the other power storage mechanisms, the determination unit determines that the cooling device is abnormal. Thereby, when the information regarding cooling of the power storage mechanism is different, it is determined that the cooling device is abnormal. For example, the cooling device is normal, but the outside air temperature is high and the temperature change amount (decrease amount) of the power storage mechanism If the power storage mechanisms are similarly cooled, for example, when the battery is small, it is not determined that the cooling device is abnormal. On the other hand, if there is an abnormality in the cooling device and each power storage mechanism is not similarly cooled, it is determined that the cooling device is abnormal regardless of the state of the power storage mechanism. As a result, the abnormality of the cooling device can be accurately determined.

  In the cooling apparatus abnormality determination device according to the third aspect of the invention, in addition to the configuration of the second aspect of the invention, the acquisition means includes a cooling effect acquisition means for acquiring information related to the cooling effect of each power storage mechanism. The comparison means includes cooling effect comparison means for comparing whether or not the information regarding the cooling effect of the power storage mechanism is different from the information regarding the cooling effect of the other power storage mechanism. The determination unit determines that the cooling device is abnormal when the information regarding the cooling effect of at least one power storage mechanism among the information regarding the cooling effect of each power storage mechanism is different from the information regarding the cooling effect of another power storage mechanism. Cooling effect determination means for determining is included.

  According to the third invention, the information regarding the cooling effect of each power storage mechanism is acquired by the cooling effect acquisition means, the information regarding the cooling effect of the power storage mechanism is acquired by the cooling effect comparison means, and the information regarding the cooling effect of other power storage mechanisms Whether they are different is compared. When the information regarding the cooling effect of at least one power storage mechanism among the information regarding the cooling effect of each power storage mechanism is different from the information regarding the cooling effect of the other power storage mechanism, the cooling device is abnormal by the determination unit. It is determined. As a result, the abnormality is determined based on the cooling effect of the power storage mechanism, and therefore, when the abnormality of the cooling device actually occurs, such as when the cooling capacity of the cooling device has changed, it is determined that the cooling device is abnormal. can do. As a result, the abnormality of the cooling device can be accurately determined.

  In the cooling device abnormality determination device according to the fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the cooling effect acquisition means includes means for acquiring the amount of change in temperature of each power storage mechanism. The cooling effect comparison means includes means for comparing whether or not the amount of change in temperature of the power storage mechanism is different from the amount of change in temperature of other power storage mechanisms. The cooling effect determination means determines that the cooling device is abnormal when the amount of change in temperature of at least one of the power storage mechanisms is different from the amount of change in temperature of the other power storage mechanisms. Means for determining that there is.

  According to the fourth invention, the amount of change in temperature of each power storage mechanism is acquired by the cooling effect acquisition means, and whether or not the amount of change in temperature of the power storage mechanism is different from the amount of change in temperature of the other power storage mechanisms, Comparison is made by the cooling effect comparison means. When the amount of change in temperature of at least one power storage mechanism is different from the amount of change in temperature of other power storage mechanisms among the amount of change in temperature of each power storage mechanism, the cooling device is abnormal due to the cooling effect determination means. It is determined. Thereby, since abnormality is determined based on the amount of temperature changes of the power storage mechanism, abnormality can be determined based on the actual state of the power storage mechanism. As a result, the abnormality of the cooling device can be accurately determined.

  In the abnormality determination device for a cooling device according to the fifth invention, in addition to the configuration of the second invention, the cooling device includes a plurality of cooling fans driven by electric power so as to blow cooling air to each power storage mechanism Is provided so as to correspond to each of the power storage mechanisms. The acquisition means includes operation information acquisition means for acquiring information related to the operation of each cooling fan. The comparison means includes operation information comparison means for comparing whether or not the information regarding the operation of the cooling fan is different from the information regarding the operation of the other cooling fans. The determination means determines that the cooling device is abnormal when the information regarding the operation of at least one of the cooling fans is different from the information regarding the operation of the other cooling fans. Operating information determining means.

  According to the fifth invention, the operation information acquisition means acquires information related to the operation of each cooling fan, and whether or not the information related to the operation of the cooling fan differs from the information related to the operation of other cooling fans. Are compared. When the information regarding the operation of at least one of the cooling fans among the information regarding the operation of each cooling fan is different from the information regarding the operation of the other cooling fans, the operation information determination unit determines that the cooling device is abnormal. The Thereby, since abnormality of a cooling device is determined based on the result of having compared information about operation of a cooling fan which is a part of a cooling device, abnormality of a cooling device can be determined based on information on the cooling device itself. . As a result, the abnormality of the cooling device can be accurately determined.

  In the cooling device abnormality determination device according to the sixth aspect of the invention, in addition to the configuration of the fifth aspect of the invention, the operation information acquisition means includes means for acquiring the drive voltage of each cooling fan. The operation information comparing means includes means for comparing whether or not the driving voltage of the cooling fan is different from the driving voltage of the other cooling fans. The operation information determination means is for determining that the cooling device is abnormal when the drive voltage of at least one of the cooling fans is different from the drive voltages of the other cooling fans. Including means.

  According to the sixth invention, the operation information acquisition means acquires the drive voltage of each cooling fan, and the operation information comparison means compares whether the drive voltage of the cooling fan is different from the drive voltages of other cooling fans. Is done. When the driving voltage of at least one of the cooling fans is different from the driving voltages of the other cooling fans, the operation information determination unit determines that the cooling device is abnormal. Thereby, since abnormality is determined based on the drive voltage of a cooling fan, abnormality of a cooling device can be determined based on the actual state of a cooling fan. As a result, the abnormality of the cooling device can be accurately determined.

  The abnormality determination device for a cooling device according to a seventh aspect of the invention is to notify the driver of an abnormality when the determination means determines an abnormality of the cooling device in addition to the configuration of any one of the first to sixth inventions. These means are further included.

  According to the seventh aspect of the invention, when it is determined that the cooling device is abnormal, the driver is notified, so that the driver can run the vehicle in response to the abnormality of the cooling device or repair the cooling device. Yes.

  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.

<First Embodiment>
With reference to FIG. 1, a hybrid vehicle equipped with a cooling device abnormality determination device according to a first embodiment of the present invention will be described. This hybrid vehicle includes an engine 100, a generator 200, a power control unit 300, a battery 400, a motor 500, a hybrid ECU (Electronic Control Unit) 600, and a caution lamp 1000. This abnormality determination of the cooling device is realized by a program executed by the hybrid ECU 600. In the present embodiment, a hybrid vehicle equipped with engine 100 will be described. However, the present invention is not limited to a hybrid vehicle, but is applied to an electric vehicle not equipped with an engine or a fuel cell vehicle equipped with a fuel cell. You may apply.

  The power generated by the engine 100 is divided into two paths by the power distribution mechanism 700. One is a path for driving the wheel 900 via the speed reducer 800. The other is a path for generating power by driving the generator 200.

  The power generator 200 generates power using the power of the engine 100 distributed by the power distribution mechanism 700. The power generated by the power generator 200 is in a vehicle operating state or a state of charge (SOC) state of the battery 400. It is used properly according to the usage. For example, during normal running or sudden acceleration, the electric power generated by the generator 200 becomes the electric power that drives the motor 500 as it is. On the other hand, when the SOC of battery 400 is lower than a predetermined value, the power generated by generator 200 is converted from AC power to DC power by inverter 302 of PCU 300, and the voltage is adjusted by converter 304. Stored in battery 400. A capacitor (capacitor) may be used instead of the battery 400.

  Motor 500 is a three-phase AC motor, and is driven by at least one of the electric power stored in battery 400 and the electric power generated by generator 200. The driving force of the motor 500 is transmitted to the wheels 900 via the speed reducer 800. Thus, the motor 500 assists the engine 100 to cause the vehicle to travel, or causes the vehicle to travel only by the driving force from the motor 500.

  On the other hand, at the time of regenerative braking of the hybrid vehicle, the motor 500 is driven by the wheel 900 via the speed reducer 800, and the motor 500 is operated as a generator. As a result, the motor 500 acts as a regenerative brake that converts braking energy into electric power. The electric power generated by the motor 500 is stored in the battery 400 via the inverter 302.

  Hybrid ECU 600 includes a CPU (Central Processing Unit) 602 and a memory 604. The CPU 602 displays the driving state of the vehicle, the accelerator opening detected by an accelerator opening sensor (not shown), the change rate of the accelerator opening, the shift position, the SOC of the battery 400, a map and a program stored in the memory 604. The arithmetic processing is performed based on the above. Thereby, hybrid ECU 600 controls the devices mounted on the vehicle so that the vehicle is in a desired driving state.

  The caution lamp 1000 is provided, for example, in a combination meter (not shown) in front of the driver's seat. The caution lamp 1000 is lit when it is determined that there is an abnormality in the cooling device that cools the battery 400, and notifies the driver and the passenger of the abnormality. The abnormality determination of the cooling device that cools the battery 400 will be described in detail later. Further, instead of turning on the caution lamp 1000, the abnormality of the cooling device may be notified by sound using a buzzer or the like, or the abnormality of the cooling device may be displayed on a display mounted on the hybrid vehicle.

  With reference to FIG. 2 (A) and (B), the battery 400 and the cooling device which cools the battery 400 are further demonstrated. As shown in FIG. 2A, the battery 400 is divided into three parts, a first battery block 410, a second battery block 420, and a third battery block 430, and is mounted on the hybrid vehicle. Each battery block is housed in a first battery housing case 412, a second battery housing case 422, and a third battery housing case 432, respectively. Each battery block is an assembled battery configured by arranging a plurality of battery cells 414, battery cells 424, and battery cells 434 connected in series. There is a space between adjacent rows, and this space becomes a cooling passage 415, a cooling passage 425, and a cooling passage 435 through which cooling air for cooling the battery 400 flows. A first cooling fan 416, a second cooling fan 426, and a third cooling fan 436 are attached to each battery housing case, respectively. These cooling fans are driven by power supplied from an auxiliary battery (not shown).

  The cooling device includes a housing case, a cooling passage, and a cooling fan. The first cooling fan 416, the second cooling fan 426, and the third cooling fan 436 are controlled by the hybrid ECU 600 so as to have the same driving condition, that is, to drive at the same voltage and the same rotation speed. When each cooling fan is driven, cooling air flows into each battery housing case from a cooling air inlet 417, a cooling air inlet 427, and a cooling air inlet 437 provided in each battery housing case. As shown in FIG. 2B, the cooling air flows from the upper part of each battery housing case, passes through each cooling passage, passes through the lower part of each battery housing case, and flows out of each battery housing case. Thereby, each battery block is cooled. At this time, in order to acquire the amount of change (decrease amount) in the temperature of each battery block during a predetermined time after the cooling fan is driven, the temperature of each battery block is detected in each battery block. A temperature sensor 418, a temperature sensor 428, and a temperature sensor 438 are attached. The temperature detected by each temperature sensor is transmitted to hybrid ECU 600. Based on the transmitted temperature of each battery block, hybrid ECU 600 calculates the amount of change in temperature of each battery block during a predetermined time after each cooling fan is driven.

  In FIG. 2, the battery cells are mounted in four columns, but the present invention is not limited to this, and the number of battery cells and the number of columns in which the battery cells are arranged can be set as appropriate. Further, the number of battery blocks is not limited to three, and any number of battery blocks may be used. Furthermore, in this embodiment, the battery 400 is cooled by the cooling fan, but the battery 400 may be cooled by circulating cooling water or the like using a water pump or the like instead of the cooling fan.

  With reference to FIG. 3, the control structure of the program executed by hybrid ECU 600 in the abnormality determination device for the cooling device according to the present embodiment will be described.

  In step (hereinafter, step is abbreviated as S) 100, hybrid ECU 600 determines the amount of change ΔT (A) in temperature of first battery block 410, the amount of change ΔT (B) in temperature of second battery block 420, and the third amount. The amount of change ΔT (C) in the temperature of the battery book 430 is detected.

  In S200, hybrid ECU 600 causes temperature change amount ΔT (A) of first battery block 410, temperature change amount ΔT (B) of second battery block 420, and temperature change amount ΔT (third battery book 430). C) is compared. In S300, hybrid ECU 600 determines whether or not the amount of change in temperature of at least one of the battery blocks is different from (different from) the other battery blocks. When the amount of change in temperature of at least one of the battery blocks is different from the amount of change in temperature of other battery blocks (YES in S300), the process proceeds to S400. If not (NO in S300), this process ends. In the present embodiment, the amount of change in the temperature of the battery block deviates means that the amount of change in the temperature of the battery block deviates beyond a predetermined range. That is, if the amount of change in the temperature of each battery block is within a predetermined range, the amount of change in the temperature of the battery block may be the same.

  In S400, hybrid ECU 600 determines that there is an abnormality in the cooling device. The abnormality of the cooling device may be a failure of a cooling fan, a cooling air intake or a cooling passage being blocked by dust (for example, a plastic bag), or the like. Further, when determining an abnormality of the cooling fan, it may be determined that the cooling fan provided corresponding to the battery block having the deviation in the temperature change amount is abnormal, and the abnormal cooling fan may be specified. . In S500, hybrid ECU 600 turns on caution lamp 1000.

  The operation of hybrid ECU 600 based on the above-described structure and flowchart will be described.

  When each cooling fan is driven while the vehicle is running, cooling air flows into each battery housing case to cool each battery block. In order to obtain information on the cooling effect of each battery block, the amount of change ΔT (A) in the temperature of the first battery block 410, the amount of change ΔT (B) in the temperature of the second battery block 420, and the temperature of the third battery book 430 Change amount ΔT (C) is detected (S100) and compared (S200).

  For example, it is assumed that the cooling air intake port 417 is blocked by some cause (for example, a plastic bag) and the cooling air does not flow into the first battery housing case 412. In this case, since the first battery block 410 is not cooled, the amount of change in the temperature of the first battery block 410 is smaller than that of the other battery blocks and deviates (YES in S300). (S400), the caution lamp 1000 is turned on.

  As described above, in the abnormality determination device for a cooling device according to the present embodiment, the hybrid ECU determines that the amount of change in the temperature of at least one of the battery blocks is the temperature of the other battery block. If there is a deviation from the amount of change, it is determined that there is an abnormality in the cooling device. As a result, the amount of change in the temperature of each battery block is relatively compared to determine whether the cooling device is abnormal. Therefore, the abnormality of the cooling device is determined without using the assumed value or the estimated value regarding the state of the battery block be able to. As a result, the influence of external factors on the result of abnormality determination is suppressed, and abnormality of the cooling device can be accurately determined.

<Second Embodiment>
With reference to FIG. 4, a hybrid vehicle equipped with an abnormality determination device for a cooling device according to a second embodiment of the present invention will be described. In the first embodiment described above, the hybrid vehicle is mounted with three cooling fans corresponding to each battery block. However, in this embodiment, a single vehicle common to each battery block is used. A cooling fan 440 is mounted. Other hardware configurations and processing flows are the same as those in the first embodiment. The function about them is the same. Therefore, detailed description thereof will not be repeated here.

  As shown in FIG. 4, a cooling fan 440 is attached to the opposite side of the cooling air intake of each battery housing block. The cooling fan 440 is driven by power supplied from an auxiliary battery (not shown). Cooling fan 440 is controlled by hybrid ECU 600. When the cooling fan 440 is driven, cooling air flows into each battery housing case from a cooling air inlet 417, a cooling air inlet 427, and a cooling air inlet 437 provided in each battery housing case. Thereby, the battery 400 is cooled.

  Even if comprised in this way, the effect similar to the above-mentioned 1st Embodiment can be acquired.

<Third Embodiment>
With reference to FIG. 5 and FIG. 6, a hybrid vehicle equipped with a cooling device abnormality determination device according to a third embodiment of the present invention will be described. In the first embodiment described above, the hybrid vehicle is provided with a temperature sensor that detects the temperature of each battery block. However, in this embodiment, each cooling fan is provided in addition to the temperature sensor. A voltage sensor for detecting a driving voltage of the motor that drives the motor (hereinafter referred to as a cooling fan driving voltage) is attached to each cooling fan. Further, in the first embodiment described above, when the amount of change in temperature of at least one of the battery blocks is different from the amount of change in temperature of other battery blocks, the hybrid Although the ECU has determined that there is an abnormality in the cooling device, in the present embodiment, the driving voltage of at least one of the cooling fans is different from the driving voltage of the other cooling fans. If so, the hybrid ECU determines that the cooling device is abnormal. Other hardware configurations and processing flows are the same as those in the first embodiment. The function about them is the same. Therefore, detailed description thereof will not be repeated here. The deviation of the driving voltage of the cooling fan means that the driving voltage of the cooling fan has deviated beyond a predetermined range. That is, as long as the driving voltage of each cooling fan is within a predetermined range, the driving voltage of the cooling fan may be the same.

  As shown in FIG. 5, a voltage sensor 419, a voltage sensor 429, and a voltage sensor 439 for detecting the driving voltage of each cooling fan are attached to each cooling fan. The drive voltage detected by each voltage sensor is transmitted to hybrid ECU 600. Hybrid ECU 600 drives each cooling fan so that the temperature of each battery block becomes a predetermined temperature. Therefore, for example, as the temperature of the battery block increases, the driving voltage of the cooling fan is increased, and the flow rate of the cooling air flowing into the battery housing case is increased. When there is no abnormality in the cooling device and the temperature of each battery block is the same, each cooling fan is driven with the same voltage.

  With reference to FIG. 6, the control structure of the program executed by hybrid ECU 600 in the abnormality determination device for the cooling device according to the present embodiment will be described. In the present embodiment, hybrid ECU 600 executes S102, S202, and S302 instead of S100, S200, and S300 in the first embodiment described above. S400 and S500 are common. Therefore, detailed description of the common parts will not be repeated here.

  In S102, hybrid ECU 600 detects drive voltage V (A) of cooling fan 416, drive voltage V (B) of cooling fan 426, and drive voltage V (C) of cooling fan 436.

  In S202, hybrid ECU 600 compares drive voltage V (A) of cooling fan 416, drive voltage V (B) of cooling fan 426, and drive voltage V (C) of cooling fan 436. In S302, hybrid ECU 600 determines whether or not the drive voltage of at least one of the cooling fans is different from (or different from) the drive voltage of the other cooling fans. If the drive voltage of at least one of the cooling fans is different from the drive voltage of the other cooling fans (YES in S302), the process proceeds to S400. If not (NO in S302), this process ends.

  The operation of hybrid ECU 600 based on the above-described structure and flowchart will be described.

  When each cooling fan is driven, cooling air flows into each battery housing case and cools each battery block. Here, the driving voltage V (A) of the cooling fan 416, the driving voltage V (B) of the cooling fan 426, and the driving voltage V (C) of the cooling fan 436 are detected (S302) and compared (S202).

  At this time, it is assumed that the cooling air inlet 417 is closed from a plastic bag, for example. In this case, since the cooling air does not flow into the battery housing case 412, the cooling effect on the battery block 410 is reduced, and the temperature of the battery block 410 is increased. When the temperature of the battery block 410 increases, the driving voltage of the cooling fan 416 is increased. Thereby, the drive voltage of cooling fan 416 deviates from the drive voltages of cooling fan 426 and cooling fan 436 (YES in S302), it is determined that the cooling device is abnormal (S400), and caution lamp 1000 is turned on. It is done.

  As described above, in the present embodiment, when the drive voltage of any one of the plurality of cooling fans deviates from the drive voltage of other cooling fans, an abnormality of the cooling device is determined. The Thereby, since the abnormality of a cooling device can be determined using the drive voltage of the cooling fan which is a part of cooling device, the determination precision can be improved.

  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 block diagram which shows the hybrid vehicle carrying the abnormality determination apparatus of the cooling device which concerns on 1st Embodiment. 1 is a diagram showing a battery and a battery cooling device that are divided and mounted on a hybrid vehicle in the first embodiment. FIG. It is a flowchart which shows the control structure of the program which hybrid ECU performs in the abnormality determination apparatus of the cooling device which concerns on 1st Embodiment. In 2nd Embodiment, it is a figure which shows the battery and battery cooling device which were divided and mounted in the hybrid vehicle. In 3rd Embodiment, it is a figure which shows the battery and battery cooling device which were divided | segmented and mounted in the hybrid vehicle. It is a flowchart which shows the control structure of the program which hybrid ECU performs in the abnormality determination apparatus of the cooling device which concerns on 3rd Embodiment.

Explanation of symbols

  400 battery, 410 first battery block, 412 first battery housing case, 416 first cooling fan, 414 battery cell, 415 cooling passage, 417 cooling air inlet, 418 temperature sensor, 419 voltage sensor, 420 second battery block, 422 Second battery housing case, 426 Second cooling fan, 424 Battery cell, 425 Cooling passage, 427 Cooling air inlet, 428 Temperature sensor, 429 Voltage sensor, 430 Third battery block, 432 Third battery housing case, 436 First 3 cooling fan, 434 battery cell, 435 cooling passage, 437 cooling air intake port, 438 temperature sensor, 439 voltage sensor, 440 cooling fan, 600 hybrid ECU, 1000 caution lamp.

Claims (7)

An abnormality determination device of a cooling device that determines an abnormality of a cooling device that cools a power storage mechanism mounted on a vehicle, wherein a plurality of power storage mechanisms are divided and mounted on the vehicle,
Acquisition means for acquiring information on cooling of each of the power storage mechanisms;
Comparison means for comparing information on cooling of each of the power storage mechanisms;
An abnormality determination device for a cooling device, comprising: determination means for determining an abnormality of the cooling device based on a result of comparison of information relating to cooling of each power storage mechanism. The comparison means includes means for comparing whether or not the information regarding cooling of the power storage mechanism is different from information regarding cooling of the other power storage mechanism,
The determination unit determines that the cooling device is abnormal when information regarding cooling of at least one power storage mechanism among information regarding cooling of each power storage mechanism is different from information regarding cooling of another power storage mechanism. The cooling apparatus abnormality determination device according to claim 1, comprising means for determining. The acquisition means includes a cooling effect acquisition means for acquiring information on the cooling effect of each power storage mechanism,
The comparison means includes cooling effect comparison means for comparing whether or not the information regarding the cooling effect of the power storage mechanism is different from the information regarding the cooling effect of the other power storage mechanism,
The determination unit determines that the cooling device is abnormal when the information regarding the cooling effect of at least one power storage mechanism among the information regarding the cooling effect of each power storage mechanism is different from the information regarding the cooling effect of another power storage mechanism. The cooling apparatus abnormality determination device according to claim 2, further comprising a cooling effect determination means for determining that The cooling effect acquisition means includes means for acquiring a change in temperature of each power storage mechanism,
The cooling effect comparison means includes means for comparing whether the amount of change in temperature of the power storage mechanism is different from the amount of change in temperature of other power storage mechanisms,
The cooling effect determination unit is configured to change the cooling device when a temperature change amount of at least one power storage mechanism is different from a temperature change amount of another power storage mechanism among the temperature change amounts of the power storage mechanisms. The cooling apparatus abnormality determination device according to claim 3, further comprising means for determining that is abnormal. The cooling device is provided with a plurality of cooling fans driven by electric power so as to blow cooling air to the power storage mechanisms so as to correspond to the power storage mechanisms.
The acquisition means includes an operation information acquisition means for acquiring information related to the operation of each cooling fan,
The comparison means includes operation information comparison means for comparing whether or not the information about the operation of the cooling fan is different from the information about the operation of the other cooling fans,
When the information regarding the operation of at least one cooling fan among the information regarding the operation of each cooling fan is different from the information regarding the operation of the other cooling fans, the determination unit determines that the cooling device is abnormal. The abnormality determination device for a cooling device according to claim 2, further comprising operation information determination means for determining. The operation information acquisition means includes means for acquiring a driving voltage of each cooling fan,
The operation information comparison means includes means for comparing whether the driving voltage of the cooling fan is different from the driving voltage of other cooling fans,
The operation information determination means determines that the cooling device is abnormal when the drive voltage of at least one of the cooling fans is different from the drive voltage of the other cooling fans. The abnormality determination device for a cooling device according to claim 5, comprising means for:   The abnormality determination device for the cooling device further includes means for notifying a driver of an abnormality when the determination means determines an abnormality of the cooling device. Cooling device abnormality determination device.

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