JP2012062661A - Battery monitoring device for work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems that dependency on a battery is high for a work vehicle such as a shovel and a crane whose power source is the battery, it is difficult to recognize the abnormality and degradation of the battery during work, and further it is preferable to appropriately determine distinctions of the abnormality/degradation/normality of the battery and the necessity of battery exchange, etc.SOLUTION: The purpose of a battery monitoring device of this invention is to monitor the state of the battery of the work vehicle such as a shovel and a crane. The monitoring device detects a battery voltage in a detection part 8 inside a controller 100 when selection means 4 for manually switching the power source mode of OFF/ACC/ON/START is changed from OFF to ON or from ON to OFF. The detected voltage is recorded in a recording part 10 and the recording is performed at the activation and at the end. Further, a battery state is determined in processing means 200 on the basis of the detected voltage at the activation and at the end. The determined result is recorded in the recording part 10 and the determined result is reported to a user with reporting means 14 at the activation and at the end.

Description

  The present invention relates to a monitoring device that monitors a battery abnormality or the like as a control system power supply for a work vehicle such as a construction machine.

Work vehicles including construction machines such as excavators and cranes are equipped with an internal combustion engine (engine) and a battery.
Unlike ordinary passenger cars, working vehicles are severely used and used, and the battery consumption is severe. Daily monitoring of the battery is necessary.
In addition to the audio system, accessories (ACC) such as various instruments and functions of the operation system and control functions of the operation system are increased in addition to the audio system, and the necessity of monitoring the battery is high.
Examples of battery monitoring in conventional work vehicles include the following patent documents.

JP 2000-329040 A JP 2007-170050 JP Patent Publication No. 2007-170050 relates to battery monitoring in a working machine using an internal combustion engine such as a golf cart or a mower although it is not a construction machine, and while monitoring the battery voltage while maintaining the connection of the battery, When the voltage falls below the specified value, the connection is disconnected and the battery voltage is detected. Patent Document 2 relates to an electric construction machine, for example, a battery-type electric hydraulic excavator, which monitors the remaining amount of battery charge during work to improve the running cost of the battery.

In both Patent Documents 1 and 2, the battery voltage is monitored with the battery connected basically. Patent Document 2 monitors a battery during work.
It is desirable that the battery can be monitored in a connected state, but there is a voltage fluctuation depending on the load to which power is supplied, and it is difficult to accurately detect the voltage.
Further, it is preferable that the battery can be monitored on a daily basis at times other than during the work even if it is difficult during the work.
Furthermore, it is also important to convey the obtained battery monitoring results to users such as drivers and operators at a timely efficient timing.
The objective of this invention is providing the battery monitoring apparatus of the working vehicle which solves such a subject.

The present invention provides a work vehicle having a main power source, a battery, and a selection unit of OFF / ACC / ON / START as a power mode including switching between the main power source and the battery.
A detection unit that detects the battery voltage when the power mode at start-up and end is selected from OFF to ON, or from ON to OFF;
The battery voltage and battery replacement information detected by the detection unit at the time of start and end are stored in the recording unit, and whether the recorded battery voltage is abnormal at the time of start and end is based on the battery replacement information. Processing means for creating judgment result data indicating whether or not all the batteries need to be replaced and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:
Furthermore, the present invention discloses a battery monitoring apparatus for a work vehicle in which the detected battery voltage at the detection unit is a value obtained from application or passing voltage of a load such as a sensor of the work vehicle.
Furthermore, the present invention discloses a battery monitoring device for a work vehicle in which the detected battery voltage at the detection unit is an output voltage of the battery.
Furthermore, the present invention provides a work vehicle having a main power source, a battery, and a power source mode selection unit of OFF / ACC / ON / START as a power mode including switching between the main power source and the battery.
A battery voltage detector;
A processing unit for obtaining a battery state determination result indicating any one of battery abnormality / deterioration / normal / battery replacement at startup and termination;
Output means;
A recording unit that records the detected battery voltage detected by the detection unit at the time of startup and termination, the battery state determination result obtained by the processing unit at the time of startup and termination, and battery replacement information;
At the time of start-up, the processing unit obtains a battery state determination result based on the detected battery voltage detected at that time and the battery determination result at the end before start-up recorded in the recording unit. If so, the battery status determination result shall be obtained based on the detected battery voltage detected at that time recorded in the recording unit and the battery determination result at the start-up before this end,
The output means is to report the battery state determination result at the start and end time,
A work vehicle monitoring device is disclosed.

Further, the present invention provides a work vehicle having a main power source, a battery, and a selection mode of OFF / ACC / ON / START as a power mode including switching between the main power source and the battery.
A recording unit, and a detection unit that detects the output voltage _{Vb of the} battery when the main power mode is selected from OFF to ON, and when the main power mode is selected from ON to OFF by the selection unit;
The battery output voltage _Vb detected by the detection unit is stored in the recording unit, and the recorded detection battery voltage _Vb is compared with the abnormality determination threshold value _Vth3 , so that the detected battery voltage _Vb is determined to be abnormal. When the threshold value V _{th3 is} less than or equal to the determination result data indicating that the abnormality is greater than the abnormality determination threshold value V _th3 and when it is equal to or less than the deterioration determination threshold value V _th2 and when the determination result data is greater than the deterioration determination threshold value V _th2 Processing means for generating judgment result data indicating normality and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:

  In the present invention, battery conversion information is recorded in the recording unit, and the processing means reads out the battery replacement information recorded in the recording unit in addition to the creation of the determination result data, and instructs battery replacement. A battery monitoring device for a working vehicle is disclosed in which the notification data is generated and recorded in the recording unit as part of the battery replacement information, and the reporting means also notifies the battery replacement instruction data.

Furthermore, the present invention provides a work vehicle having a main power source, a battery, and a selection unit as a power mode including switching between the main power source and the battery.
Switching means for switching between the main power source and the battery according to the power mode of the selection means;
Using the output from the switching means as a power source, the actuator and sensors of the work vehicle are controlled and monitored, and a controller having a battery monitoring means,
With
The battery monitoring means includes
A detection unit that detects the battery voltage when the power mode at start-up and end is selected from OFF to ON, or from ON to OFF;
The battery voltage and battery replacement information detected by the detection unit at the time of start and end are stored in the recording unit, and whether the recorded battery voltage is abnormal at the time of start and end is based on the battery replacement information. Processing means for creating judgment result data indicating whether or not all the batteries need to be replaced and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:

  According to the present invention, an accurate battery voltage can be detected by detecting the battery voltage when the power mode by the selection means is selected from OFF to ON and from ON to OFF. Furthermore, when the battery state is selected, abnormality / deterioration / normal / battery replacement can be determined, and operation of the vehicle under battery abnormality can be eliminated.

It is an Example figure of the controller with a battery monitoring function of this invention. It is a figure which shows the example of a hydraulic shovel as a work vehicle of this invention. It is a layout example figure in the driver's cab in a hydraulic excavator. It is a figure which shows the example of a battery shovel as a working vehicle of this invention. It is a structural example figure of the upper revolving structure of a battery shovel. It is an example of the whole process flow of the battery monitoring of this invention. FIG. 7 is an example of a part of detailed processing flow in the processing flow of FIG. 6. FIG. 7 is an example of another part of the detailed processing flow of the processing flow of FIG. 6. FIG. 7 is an example of another part of the detailed processing flow of the processing flow of FIG. 6. FIG. 7 is an example of another part of the detailed processing flow of the processing flow of FIG. 6. FIG. 7 is an example of another part of the detailed processing flow of the processing flow of FIG. 6.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. A hydraulic excavator as a work vehicle according to the present invention will be described. FIG. 2 shows an overall configuration of a hydraulic excavator as an example of a construction machine. In the figure, 11 is a crawler type lower traveling body, 12 is an upper turning body, and 13 is a front working machine comprising excavation working means and the like provided on the upper turning body 12. In addition, a driver's cab (cab) 14 is installed on the upper swing body 12 so that an operator can ride and operate the machine. Operation means including an operation lever for performing operations such as operation of a boom 13a, an arm 13b, and a bucket 13c constituting the front work machine 13 for performing operations such as turning of the body 12, excavation of earth and sand, and the like is provided.

  The hydraulic excavator is driven by, for example, a hydraulic drive system in which a hydraulic pump is operated by an engine to drive a hydraulic actuator such as a hydraulic motor or a hydraulic cylinder, or an electromagnetic actuator system that is operated by electric power from a main power source.

  As shown in FIG. 3, a monitor 15 is installed in the cab 14, and various information is displayed on the monitor 15 so that an operator who operates the machine recognizes the information. Can be done. The monitor 15 should therefore be visible while the operator is operating the machine and should not interfere with the forward view as much as possible during work. For this purpose, the monitor 15 has a relatively small screen, and is disposed obliquely in front of the driver's seat 16 in the cab 14, and is attached to the pillar 17, for example.

The power system will be described.
The electric power system refers to a side that provides electric power, and plays a role of starting and operating an engine of a hydraulic excavator, operations of various electric systems, actuators, and a sensor driving source.
The power sources are a generator that is connected to the crankshaft of the engine and generates power using the power of the engine (in many cases of AC generators), and a battery. The generator is called the main power source and the battery is called the auxiliary power source.
The generator has a battery charging function and works together with the battery as a power source.
The power source is switched by a manual switch. The manual change-over switch enables switching of four power modes, OFF / ACC / ON / START.
OFF is the supply of power, ACC is the supply of power from the battery, ON is the supply of power from the main power source that is the generator, and the START by the battery is the engine start (starting motor drive). Point to.

FIG. 1 is a block diagram including a controller 100 having a work vehicle control and monitoring function and its periphery.
The above-described control by the controller 100 is control of driving various actuators of the work vehicle, and specifically includes control of an electromagnetic actuator, an electromagnetic proportional valve, and an ON / OFF valve.
The monitoring by the controller 100 is monitoring by sensors, for example, angle, oil pressure, temperature monitoring sensors. The angle includes various angle sensors associated with operations such as an arm, a boom, and a posture of the main body (pitching, rolling, turning). Furthermore, various sensors for the lever operation amount and lever operation pressure, and abnormality warning means (lamp and buzzer) are also included.
In addition to the above control and monitoring, the controller 100 has a battery 2 monitoring function as a feature of this embodiment. This will be described later.

  FIG. 1 discloses a main power source 1, a battery 2, a power source selection unit 3, a stop unit 4, a power source switching unit 5, a load 13, a report unit 14, a recording unit 15, and a setting unit 16 in addition to the controller 100.

  The main power source 1 is a generator that is connected to the crankshaft of the engine and generates power by the engine. If the generator is an AC generator (alternator), a rectifier that converts the AC output to DC is included.

The battery 2 performs driving of a starting motor for starting the engine, engine ignition control, and the like. The battery 2 is charged by the generator that is the main power source 1.
Although the main power source 1 and the battery 2 can work together to serve as a power source, the main power source 1 and the battery 2 work selectively with respect to the controller 100 depending on the power mode. In the present embodiment, the main power source 1 and the battery 2 are the power sources of the controller 100, and the voltage of the battery 2 is monitored according to the power mode selected by the power source selection unit 3.

The power supply selection means (manual changeover switch) 3 is a manual changeover switch that selects a power supply mode manually by a driver or an operator. There are OFF / ACC / ON / START power modes, and the following transitions are made manually.
At start-up OFF → ACC → ON1 → START → ON2
End (after engine start)
ON2 → ACC → OFF
End (before engine start)
ON1 → ACC → OFF
ON1 indicates an engine stop state, and ON2 indicates an engine start state. After the engine is started, when the driver or the operator releases the hand, the selected state returns from the START state to the ON state. During maintenance, the power mode may be turned off before starting the engine.
Here, OFF means power supply stop, ACC means power supply from the battery 2, ON means power supply from the main power supply 1, and START means engine start (motor drive start). START is performed by driving a starting motor by the battery 2.
The stop means 4 stops the controller 100 itself, and this stop is realized by stopping the power supply to the controller 100.

The switching means 5 switches whether the power to be supplied to the controller 100 is from the main power source 1 or from the battery 2 obtained through the stopping means. This switching is based on the power mode selected by the selection means 3.
The load 13 is a load as a control / monitoring target, and is the above-described operation driving target, various sensors, or the like.

  The reporting unit 14 is a reporting unit for reporting a battery determination result by the controller 100 to a user (driver or operator). The recording means 15 is an external recording means for the battery determination result. The setting means 16 is a setting means for reporting time of battery judgment results to the user (driver or operator).

As described above, the controller 100 monitors and controls the work vehicle, but FIG. 1 omits them and shows only the battery 2 state monitoring function.
The controller 100 includes a power switching state determination unit 7, a battery voltage detection unit 8, a recording call unit 9, a recording unit 10, a recording / report end determination unit 11, a voltage detection unit 12 after passing a load, and a processing / control unit 200. Prepare. The controller 100 is connected to a load 13 such as a sensor and an actuator, a reporting unit 14, an external recording unit 15, a setting unit 16, a switching unit 3, a stopping unit 4, and a selecting unit 5.
The controller 100 receives the power supply state A selected by the switching unit 3 and the power supply state (voltage) B selected by the stop unit 4.

  The determination unit 7 receives the output A of the switching unit 5 and determines the switching state of the power supply switching unit 5. The detection unit 8 detects the battery voltage B from the stop unit 4. The recording unit 10 performs various recordings such as detection results including the battery voltage 8, various setting contents, processing results, and determination results. The calling unit 9 reads the recorded contents from the recording unit 10. The determination unit 11 determines the end of recording / reporting. The detection unit 12 detects the voltage after passing through the load. The output unit 6 outputs a voltage to the load. A processing / control unit (which may be called a processing unit) 200 performs overall management and control, and various determination processes.

  The load 13 connected to the controller 100 corresponds to a load such as a sensor or an actuator. The controller 100 supplies a voltage to the load 13 through the output unit 6, takes in an operating voltage (for example, a sensor detection value) of the load 13 and causes the detection unit 12 to detect it. This indirectly detects the battery voltage state.

  The reporting unit 14 (output unit) connected to the controller 100 reports the determination result of the controller 100, the countermeasure command, etc. to the user through a screen, voice, or the like. The recording means 15 connected to the controller 100 receives and records the determination result of the battery state obtained by the controller 100. The setting means 16 sets a report time (including an interval) from the controller 100 to the user. This is the reporting time of the reporting means 14.

  The recording unit 10 is an internal recording unit in the controller 100, and the recording unit 15 is an external recording unit. The recording unit 10 stores various data necessary for processing in the controller 100 and processing and determination results. The recording unit 15 is used as an external recording unit for the contents of the recording unit 10.

  The recording unit 15 is a non-volatile memory unit that performs various types of recording such as recording of the battery voltage detected by the detection unit 8 and recording of the determination result (data) of the battery state. The determination result of the detected battery voltage and the battery state is stored including the time including the date and time of the detection time and the time including the date and time of the determination result. The recording means 15 also records replacement data including the battery replacement date. The recording means 15 also records battery status warning data / reported data to the user. The recording unit 15 also records initial setting values and various work / management data for determining the battery state.

The reporting means 14 is a part that reports the monitoring result of the battery state to a user such as a work vehicle operator or a driver. In some cases, the notification is performed by displaying a monitor screen and / or sound, and further by printing. The state monitoring result is any one of normal / deterioration / abnormality / battery replacement instruction (including time) as a determination result of the battery state recorded in the recording unit 8.
The processing / control unit 200 performs overall processing control and battery monitoring processing.

  Elements 7 to 13 and external elements 1 to 5 and 13 to 16 in the controller 100 of FIG. 1 perform their functions in the processing of the flowcharts in FIG.

FIG. 6 shows the overall process flow of battery status monitoring. 7 to 10 are a part of detailed processing flow of the processing flow.
Starting in FIG. 6 (such as step _{S 2} and _{S 7)} is the activation of the power mode by selecting means 3 of the power supply from OFF, Toka state (ACC Toka ON Toka START was Tsu switched to a mode other than OFF ). The end in FIG. 6 (steps S ₁₁ , S _18, etc.) refers to a state in which the power mode by the power source selection means 3 is switched from another mode (ACC, ON, START, etc.) to OFF.
Step S ₁ ... The internal state in the controller 100 is initialized. This initialization is performed when the controller 100 is started up.
The contents of initialization are as follows.
Data indicating “battery status” is set to “normal” (the status flag is set to a flag indicating normal).
Set the report time to the user at startup.
Set data indicating “Report to user at startup” to wait for execution.
Data indicating “judgment of battery status at startup” is set to wait for execution.
Data indicating "Report to user at end" is set to wait for execution.
Set the report time to the user at the end.
Data indicating "judgment of battery status at end" is set to wait for execution.
Set data indicating “record battery status at end” to wait for execution.
Here, the execution waiting data indicating is that the step S ₂ and subsequent steps awaiting execution in FIG. 6, in synonymous with the said data to the data processing manner to clear state to an initial value such as zero is there. That is, it means that the data written in brackets is obtained as a result of execution by executing the process.

Step S ₂ ... It is checked whether or not the battery state determination process at the time of startup is completed. And the determination process is to check the battery status data to, because of unconfirmed at startup time of startup, always goes to Step S ₃ when activated, it moves further to the S ₄ to S _6. Step S ₃ to S ₆ are a series of process flow for the confirmation decision battery condition, and executes the process of step S ₃ to S ₆ after proceeds to step S _3, check the battery state at the time of activation determination As a result, data indicating the battery judgment state is obtained and recorded in the recording unit 10. And, after that, not to move to step S _3, the process proceeds to always step S ₇ or later.

Step S ₃ ... A process of reading data indicating the battery state at the end time recorded in the recording unit 10 is performed. The end time refers to the end time at the end of the latest work (operation end) of the work vehicle before the current activation. The battery voltage is always detected when the power mode is OFF at the end, and the battery state is determined based on the detected voltage, and the result is recorded as data in the recording unit 10. This, that was reads a Step S _3. The data indicating the read battery state is used in FIGS. 8 and 9 to be described later. The data indicating the state of the battery includes a determination result of normal / abnormal / deterioration of the battery and battery replacement data in addition to the detected battery voltage.

Step S _4. This step S ₄ is a determination process for detecting the battery state at the time of activation, and details thereof will be described later with reference to FIG. The battery state here is a determination result for the battery that is performed at the time of startup. Although Step S ₁₂ in FIG. 6 is also a process of detecting the same battery state, differ in step S ₁₂ is processed at the end. The processing contents of FIG. 7 will be described later, but the processing results are a determination as to whether the battery state at startup is normal / deteriorated / abnormal, and an instruction to recommend battery replacement. This determination process also takes into account the determination result of the battery state at the previous end. The processing result is recorded in the recording unit 10.
Step S ₅ ... When the determination result is obtained in step S ₄ , the “start-up determination” flag is set to “1”, and the determination is completed.

Step S ₆ is a process of selecting a battery state to be reported to the user at the time of startup. The battery state at the time of startup is obtained in step S ₄ (that is, the process of FIG. 7), but the final state determination is performed in consideration of the data indicating the battery state at the end time read from the recording unit 10 in step S _3. the aimed is the step S _6. The final determined battery state (normal / deteriorated / abnormal / replacement recommended) is selected as report data. This selected battery condition data is provided to the user via the reporting means 14 in the process shown in FIG. 11, ends the process in the creation of the step S ₆ the reported data.

Steps S ₇ , S ₈ ... Steps S _{3 to} S ₆ are always performed at the time of start-up. However, after completion of this process, that is, after completion of the battery state determination process at start-up, step S Move to ₇ . In step S _7, it reports to check whether the termination due to report or step S ₇ of the battery state at the time of start-up. The first because it has not been completed, be sure, the process proceeds to step S ₈ to perform the reporting process of the battery state at the time of start-up. Then report. Or, after the report goes to step S ₉ by reported completed. The details of step S ₈ is 8, described later.

Steps S ₉ , S ₁₀ ... This step S ₉ is a process based on the premise that the report of the battery state at the time of startup to the user is completed (step S ₈ ), and checks whether the power mode is other than OFF. To do. Other than OFF indicates one of ACC / ON / START. If OFF, the process proceeds to step _{S 11.} If any one of the ACC / ON / START moves to step _{S 10,} to update the exchange information of the battery. Exchange information in step S ₁₀ is to be recorded to the recording unit 10.

Step S ₁₁ is a step that works when the power supply mode is OFF, and checks whether or not the battery state determination process at the end is completed (the processes in steps S _{12 to} S ₁₄ are completed). Always moves to step S ₁₂ at the stage where the determination processing of the battery state is not completed, the process proceeds to step S ₁₅ if completed.

Step _{S 12 ~S} 14 _... it is a process of the determination process of the battery state at the end to work always at a stage that is not yet finished, corresponds to the step of the step S ₄ ~S ₆ at the time of start-up. Step S battery condition is detected at _12, then to "complete" the "at the end of determination" data in step S _13, selects the report battery status at the end in step S ₁₄ (determination) to. Step _S details 7 of _12, details of step _{S 14} is FIG. Startup Figure 8 at step S _6, at the end of step S ₁₄ is distinguished from the FIG. Detailed operations of FIGS. 7 and 9 will be described later.

In the after processing of step _S 12 _{to S 14} has been completed in step S _{15 ...} at the end, the process proceeds to step _{S 15.} This step S ₁₅ is the state of the battery recording is checked whether or not the complete recorded in the recording unit 10. The same processing as Step S _7. If not completed, the processes of steps S ₁₆ and S ₁₇ are performed. After the completion, the recording of step S ₁₇ is completed and the process proceeds to step S ₁₈ .

Steps S ₁₆ , S ₁₇ ... The battery state at the end is recorded in the recording unit 10 in Step S ₁₆ , and the recording is completed in Step S ₁₇ .

Step S ₁₈ ... It is checked whether or not the report to the user at the end is completed. Since it has not been reported at this time, always moves to step S _19, reports via the reporting means 14 of the battery state at the end. Or, after the reported end moves to always step S ₂₀ is. Details of step _{S 19} is 11, described later.

Step S ₂₀ ... After step S ₁₉ is completed, the process always proceeds to step S ₂₀ to stop the controller 100 itself. This is achieved by shutting off the input power to the controller 100 by the stop means 4.

The operation of FIG. 7 which is the detailed processing of steps S ₄ and S ₁₂ of FIG. 6 will be described. FIG. 7 shows a battery state detection process. In this detection process, three reference threshold values V _th1 , V _th2 , and V _th3 are used.
V _th1 is a reference threshold value for determining the operating voltage of the load 13. For example, the operation voltage Va including the drive voltage of the operation lever, the detection voltage of the sensor, and the like is _a determination target. This detection is a detection unit 12 to carry out, the detected voltage V _a is compared magnitude and V _th1 be incorporated into the controller 100. V _th2 and V _th3 are for voltage determination of the battery 2, and the determination target is the battery voltage V _b detected by the detection unit 8. There is a relationship of V _th3 <V _th2 , where V _th3 is an abnormality determination threshold value and V _th2 is a deterioration determination threshold value. V _th3 is a voltage value that is a clear abnormality, and V _th2 is a voltage value that is not a clear abnormal value, but at a level at which the operation seems to be unstable.

Step S _{30 ...} This step _{S 30} is performed and the operating voltage _{V a} of the load detected by the detecting unit 12 a comparison between the first abnormality determination threshold _{V th1.} If _{V a} ≦ _{V th1} moves to step _{S 33} if _{V a>} V _th1 proceeds to step _{S 31.} Operating voltage V _a is, for example, a value of several V. The detection purpose of the detection unit 12 is to know whether the operating voltage of the load is normal. Thereby, the abnormality of the battery 2 is indirectly detected. The detection target may be either the supply voltage to the load or the voltage after passing through the load, but the detection unit 12 in FIG. 1 shows the latter example.

Steps S ₃₁ , S ₃₂ ... Step ₃₁ checks whether or not the power mode at that time is ACC under the condition of V _a <V _th1 in step S ₃₀ . ACC is a state in which there is no power supply from the main power source 1 and power is supplied from the battery 2. It is assumed to perform the battery status determination when it is ACC, if ACC proceeds to step S _32, the battery state data of the "abnormal" of Te load side viewed from. This is recorded in the recording unit 10.

Step S ₂₉ , S ₃₃ ... Step S ₃₃ is either when V _a > V _th1 in Step S ₃₀ or when it is not ACC in Step S ₃₁ , that is, when it is either OFF / ON / START. the operation of the determination of the detection voltage V _b at the detector 8 at step S ₂₉ in conditions. Detector 8 in step S _29, when the output voltage of the switching means 3 is from a battery, or the battery voltage which is the output of the stop means 4, either to detect the battery voltage V _b. In the determination, the second abnormality determination threshold value V _th3 and V _b are compared in magnitude. If V _b > V _th3 , the process _proceeds to step S ₃₄ , and if V _b ≦ V th 3, the process _proceeds to step S ₃₂ and data indicating that the battery state is “abnormal” is set. This is recorded in the recording unit 10. The battery voltage is 24 V, for example, and V _th2 and V _th3 are set empirically corresponding to this.

Steps S ₃₄ , S ₃₅ ... Step S ₃₄ compares the battery detection voltage V _b with the deterioration determination threshold value V _th2 . If V _b > V _th2 , the process _proceeds to step S ₃₆ , and if V _b ≦ V th 2, the process _proceeds to step S ₃₅ and data indicating that the battery state is “deteriorated”.

Step S ₃₆ ... Step S ₃₆ checks whether or not the battery usage period has passed the number of days recommended for replacement when V _b > V _th2 . The number of days and the period of use are recorded in the recording unit 10 and are read and checked by the calling unit 9.
This step _S36 is a just-in-time check, but it is always performed every day.

Steps S ₃₇ , S ₃₈ ... If the number of days has passed as a result of the check in Step S ₃₆ , the battery status is changed to “Recommendation Recommended” in Step S ₃₇ . If not, in step _S38 , the battery status is changed to “normal” data.

Step S ₆ in FIG. 6, the operation of FIG. 8 is a detailed process. 8, it is determined while selecting the battery state using the battery state of determination result in the current point, the determination result of the battery state at the end of read out from the recording unit 10 in step S ₃ in FIG. 6, the .

Steps S ₄₀ , S ₄₁ ... Step S ₄₀ checks whether or not the battery state detected in step S ₄ is data indicating “abnormal”. If it is data indicating “abnormal”, the process proceeds to step _S41 , and report data is generated in which the battery state to be warned is “abnormal”.

Step S ₄₂ ... Step S ₄₂ operates when the data is not “abnormal” in step S ₄₀ , and the determination result of the battery state at the end read from the recording unit 10 in step S ₃ of FIG. It is checked whether or not. If "abnormal" moves to step _{S 41,} and proceeds to "abnormal" Otherwise step _{S 43.}

Steps S ₄₃ , S ₄₄ ... Check whether or not the battery state detected in Step S ₄ is “deteriorated”. If "deterioration" moves to step S _44, making the effect of reporting data of the "deterioration".

Step S ₄₅ ... Step S ₄₅ checks whether or not the battery state detected in Step S ₄ is “deteriorated”. If "degradation" proceeds to step _{S 44,} it moves to "degrade" unless steps _{S 46.}

Steps S ₄₆ , S ₄₇ ... Check whether the battery status is “recommended conversion”. This is also processing in response to the processing result of step S ₄ (FIG. 7) in FIG. If “conversion recommended”, the process proceeds to step _S47 , and data “recommended conversion” is created as report data. "Conversion recommended" Otherwise, the read battery condition is checked whether the "conversion recommended", proceeds to step S ₄₇ if "conversion recommended". If not, the process proceeds to step _S49 , and data for making the reported battery status “normal” is created.

Step S ₁₄ in FIG. 6, the operation of FIG. 9 is a detailed process. Also in FIG. 9, utilizes similar to FIG. 8, and the detection result in step S ₄ in FIG. 6, the detection result read out in step S ₃ in FIG. 6, the.

Steps S ₅₀ , S ₅₁ ... Upon detection of the battery state in step S ₄ (FIG. 7) in FIG. 6, it is checked whether or not the data indicates “abnormal”. proceeds to step S _11, as should be reported data, create the effect of the data of "abnormal". If data indicating "abnormal" and proceeds to step _{S 52.}

Step S ₅₂ ... It is checked whether or not the read battery state detection result is data indicating “abnormal”. If the data indicates “abnormal”, the process proceeds to step S ₅₁ , otherwise, the process proceeds to step S ₅₃ . Move.

Steps S ₅₃ , S ₅₄ ... Check whether the battery state detected in step S ₄ in FIG. 6 is data indicating “deterioration”. If so, the process proceeds to step S _54, and the data to be reported is “deterioration”. Create data indicating "". Otherwise, the process proceeds to step _{S 55.}

Step S ₅₅ ... It is checked whether or not the battery state read in Step S ₃ in FIG. 6 is data indicating “deterioration”. If so, the process proceeds to Step S ₅₄ , and if not, the process proceeds to Step S ₅₅ .

Steps S ₅₆ , S ₅₇ ... Check whether or not the battery state detected in Step S ₄ in FIG. 6 is “normal” data. If so, the process proceeds to Step S ₅₇ and data indicating “normal”. Is generated as report data, otherwise, the process proceeds to step _S58 , and report data indicating "replacement is recommended" is generated.

10 and 11 will be described together. This is a detailed process of steps S ₈ and S ₁₉ in FIG.

Steps S ₆₀ , S ₇₀ ... The battery status is reported to the user via the reporting means 14 at the start and at the end. This report data is the report data created in FIGS.
How to report depends on screen, voice guidance, blinking lamp, ringing buzzer, vibration of operating device and seat.
Steps S ₆₁ , S ₇₁ ... Update the report time to the user. In addition to recording the reporting time when reporting, if the setting should be reported multiple times, the number of times is recorded. This reporting time is set by the setting means 16.

Steps S ₆₂ , S ₇₂ ... Check whether the updated time has reached a predetermined number of times (threshold).
Steps S ₆₃ , S ₇₃ ... When the predetermined number of times has been reached, the reporting state of the user is set to “completed”.

  Each processing flow described above is an example, and other processing flows are not denied. Needless to say, the controller 6 of FIG. 1 can also be realized by a computer system. Further, although it is a vehicle, it can also be applied to a stationary work machine.

Next, the battery excavator will be described.
A battery excavator is a machine that has the advantage of being free from exhaust gas and having less noise vibration, and supplies electric power from a main power source including a commercial power source and a battery to control an electric motor and drive an actuator. In an excavator using a battery as a power supply source, power from the battery is supplied to a plurality of electric motors via an inverter. The electric motor for driving the actuator is a hydraulic pump that supplies pressure oil to the shilling of each actuator that drives the link mechanism that performs excavation work etc., and the electric motor for driving that drives the upper rotating body relative to the lower traveling body The rotating mechanism that directly rotates is directly driven, and the electric motor for traveling directly drives the traveling mechanism.

  A battery-type electric hydraulic excavator will be described as an example of a work vehicle in which a link mechanism for excavation and the like is driven by a hydraulic system, and turning and traveling are moved linearly by an electric motor.

Initially, the whole structure of the electric shovel which is a work vehicle by this embodiment is demonstrated.
FIG. 3 is a side view showing the overall configuration of an electric excavator that is a work vehicle according to an embodiment of the present invention.

  The battery excavator 11A includes an upper swing body 12A, a link mechanism 13A, and a lower traveling body 14A. In this system, the link mechanism is hydraulically driven, and the turning of the upper turning body 12A and the running of the lower traveling body 14A are driven by an electric motor.

  The configuration of the link mechanism 13A includes a boom 31, an arm 32, a bucket 33, and hydraulic cylinders 34a, 34b, and 34c that apply driving force to the boom 31, the arm 32, and the bucket 33, respectively.

  The lower traveling body 14A mainly includes a track frame 41, a turning wheel bearing 42 for rotating the upper turning body, traveling mechanisms 43L and 43R, and endless track covering bands 44L and 44R.

Next, the configuration of the upper swing body 12A of the electric shovel that is the work vehicle will be described.
FIG. 5 is a top view showing the configuration of the upper swing body of the electric excavator.

  The upper swing body 12A mainly includes a slip ring 21, a conductor control panel 22, an inverter storage unit 23, a battery storage unit 24, a hydraulic oil tank 25, and a hydraulic control valve unit 26 on the main frame 20. The hydraulic pump storage unit 27, the turning mechanism 28, and the cab 29 are mounted. There are other accessories such as oil coolers, but they are omitted here.

  The slip ring 21 is a mechanism that transmits the power of the driving battery 241 to the traveling mechanism 43 without being obstructed by the rotation of the upper swing body 12A.

  The inverter storage unit 23 includes a plurality of inverters 231a,..., 231e and a cover 232 that covers the inverters 231a,. In this example, the inverter 231a is used for driving the hydraulic pump, the inverter 231b is used for turning, 231c and 231d are used for traveling, and the inverter 231e is used for driving the pilot hydraulic pump.

  The battery storage unit 24 includes a plurality of power batteries 241 at a high voltage, a plurality of control system power batteries 242 at a low voltage, and a cover 243 that covers the power battery 241 and the control power battery 242.

  Although not shown, the conductor control panel 22 includes a conductor for switching power from the power battery 241, a breaker, and a battery controller for managing the battery.

  The hydraulic control valve unit 26 includes a hydraulic control valve 261 that supplies hydraulic pressure to the link mechanism, and a pilot valve 262 that controls the hydraulic control valve 261.

  The hydraulic pump storage unit 27 includes a hydraulic pump electric motor 271, a hydraulic pump 272, a coupling 273 that connects the shafts of the electric motor 271 and the hydraulic pump 272, a pilot hydraulic pump electric motor 274, and a pilot hydraulic pump 275. And a coupling 276 for connecting the shafts of the electric motor 274 and the pilot hydraulic pump 275 and a cover for covering them. The electric motors 271 and 274 are three-phase alternating current, and an inverter is used for direct current / alternating current conversion from the battery.

Even the above-described battery excavator has a controller as a control processing means including a computer system. There is a controller battery as a dedicated power source for this controller. The controller battery is distinguished from the main power source. The controller as a control processing means controls various actuators including an operation lever, drives various sensors, and processes necessary for the control, accessory system control, monitor screen control, and various controls for this control. Process.
The controller has a monitoring function for the controller battery shown in FIG.

DESCRIPTION OF SYMBOLS 1 Main power supply 2 Battery 3 Selection means 4 Stop means 5 Switching means 8 Battery voltage detection part 10 Recording part 14 Reporting means 100 Controller

Claims (7)

In a work vehicle having a main power source, a battery, and OFF / ACC / ON / START selection means as a power mode including switching between the main power source and the battery,
A detection unit that detects the battery voltage when the power mode at start-up and end is selected from OFF to ON, or from ON to OFF;
The battery voltage and battery replacement information detected by the detection unit at the time of start and end are stored in the recording unit, and whether the recorded battery voltage is abnormal at the time of start and end is based on the battery replacement information. Processing means for creating judgment result data indicating whether or not all the batteries need to be replaced and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:   The battery monitoring device for a work vehicle according to claim 1, wherein the detected battery voltage in the detection unit is a value obtained from application or passing voltage of a load such as a sensor of the work vehicle.   The battery monitoring apparatus for a work vehicle according to claim 1, wherein the detection battery voltage in the detection unit is an output voltage of the battery. In a work vehicle having a main power source, a battery, and means for selecting each power mode of OFF / ACC / ON / START as a power mode including switching between the main power source and the battery,
A battery voltage detector;
A processing unit for obtaining a battery state determination result indicating any one of battery abnormality / deterioration / normal / battery replacement at startup and termination;
Output means;
A recording unit that records the detected battery voltage detected by the detection unit at the time of startup and termination, the battery state determination result obtained by the processing unit at the time of startup and termination, and battery replacement information;
At the time of start-up, the processing unit obtains a battery state determination result based on the detected battery voltage detected at that time and the battery determination result at the end before start-up recorded in the recording unit. If so, the battery status determination result shall be obtained based on the detected battery voltage detected at that time recorded in the recording unit and the battery determination result at the start-up before this end,
The output means is to report the battery state determination result at the start and end time,
Work vehicle monitoring device. In a work vehicle having a main power source, a battery, and OFF / ACC / ON / START selection means as a power mode including switching between the main power source and the battery,
A recording unit, and a detection unit that detects the output voltage _{Vb of the} battery when the main power mode is selected from OFF to ON, and when the main power mode is selected from ON to OFF by the selection unit;
The battery output voltage _Vb detected by the detection unit is stored in the recording unit, and the recorded detection battery voltage _Vb is compared with the abnormality determination threshold value _Vth3 , so that the detected battery voltage _Vb is determined to be abnormal. When the threshold value V _{th3 is} less than or equal to the determination result data indicating that the abnormality is greater than the abnormality determination threshold value V _th3 and when it is equal to or less than the deterioration determination threshold value V _th2 and when the determination result data is greater than the deterioration determination threshold value V _th2 Processing means for generating judgment result data indicating normality and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:   In the recording unit, battery conversion information is recorded, and in addition to the creation of the determination result data, the processing means reads out the battery replacement information recorded in the recording unit to create battery replacement instruction notification data. 2. The battery monitoring apparatus for a work vehicle according to claim 1, wherein said battery replacement information is recorded in said recording unit as a part of battery replacement information, and said reporting means also notifies the battery replacement instruction data. In a work vehicle having a main power source, a battery, and a selection means as a power mode including switching between the main power source and the battery,
Switching means for switching between the main power source and the battery according to the power mode of the selection means;
Using the output from the switching means as a power source, the actuator and sensors of the work vehicle are controlled and monitored, and a controller having a battery monitoring means,
With
The battery monitoring means includes
A detection unit that detects the battery voltage when the power mode at start-up and end is selected from OFF to ON, or from ON to OFF;
The battery voltage and battery replacement information detected by the detection unit at the time of start and end are stored in the recording unit, and whether the recorded battery voltage is abnormal at the time of start and end is based on the battery replacement information. Processing means for creating judgment result data indicating whether or not all the batteries need to be replaced and recording the data in the recording unit;
An output means for outputting the created determination result data;
A battery monitoring device for a work vehicle comprising:

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