JP2005146939A - Engine startability predicting device and starting secondary battery with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine startability predicting device capable of predicting startability of an engine according to a peripheral temparture after change even when rapid change of the peripheral temperature of a secondary battery for a vehicle is predicted, and a starting secondary battery integrated with the device. <P>SOLUTION: This engine startability predicting device predicting startability of an engine started by a secondary battery comprises temperature measuring means measuring a secondary battery temperature (T), and a voltage measuring means measuring a secondary battery voltage (V<SB>S</SB>) at the time of starting the engine. When a temperature of the secondary battery at an arbitrary time of starting the engine is designated as a first temperature (T<SB>1</SB>) and a secondary battery voltage (V) is designated as a secondary battery voltage (V<SB>S1</SB>), the secondary battery voltage (V<SB>S</SB>) at the time of starting the engine at a temperature T2 virtually set low based on T<SB>1</SB>and V<SB>S1</SB>is predicted as a secondary battery voltage (V<SB>S2</SB>), so as to predict startability of the engine at the temperature T<SB>2</SB>. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a device for predicting whether or not an engine of a starting storage battery can be started, and a starting storage battery including this device.

  Storage batteries are used in various applications such as power sources for starting engines in vehicles and backup power sources. And in order to avoid the malfunction of the apparatus using storage batteries, such as a vehicle, the method of estimating the deterioration degree of a storage battery, a remaining capacity, or a remaining life has been examined. As a method of knowing the state of such a storage battery, the level of the electrolyte of the storage battery and the sulfuric acid concentration are measured, the terminal voltage and the internal resistance of the storage battery are measured, and the storage battery is based on the measured information. Various methods for determining the degree of deterioration, remaining capacity or remaining life have been proposed.

For example, Patent Document 1 discloses that the internal impedance of a storage battery is measured and the deterioration state of the storage battery is monitored from the degree of increase in internal impedance. In particular, regarding an engine starting storage battery used in a vehicle, Patent Document 2 discloses a device that measures the terminal voltage of the storage battery and displays the state of the storage battery according to the measured value, and a configuration in which this device is provided integrally with the storage battery. It is shown.
JP-A-9-134742 JP 59-94381 A

  However, none of the above-described Patent Document 1 and Patent Document 2 takes special consideration with respect to changes in the ambient temperature of the storage battery. In particular, in a storage battery for a vehicle, the ambient temperature of the storage battery changes rapidly as the vehicle moves. For example, the ambient temperature of the storage battery may suddenly decrease due to movement from a relatively warm region to a cold region. Such a rapid temperature change greatly affects the state detection accuracy of the storage battery.

  For example, if a vehicle equipped with a storage battery with an integrated state detection device departs from a relatively warm area and moves to a cold place where the temperature is lower than the departure place, the state detection device at the departure place Although it was determined to be good, the ambient temperature of the storage battery suddenly decreased at the arrival place, and the output of the storage battery decreased, and the engine could not be started.

  The present invention is an engine startability predicting apparatus capable of predicting engine startability according to the changed ambient temperature even when it is assumed that the ambient temperature of the vehicular storage battery changes rapidly. The present invention also provides a starting storage battery that is integrally provided with this device.

In order to solve the above-described problem, the invention according to claim 1 of the present invention is an engine startability predicting apparatus for predicting startability of an engine started by a storage battery, and is a temperature at which the storage battery temperature (T) is measured. Voltage measuring means for measuring the storage battery voltage (V _S ) when the engine is started at the storage battery temperature (T),
The storage battery temperature (T) at the time of any engine start is set as the first temperature (T ₁ ),
When the storage battery voltage (V) measured at the time of starting the engine at the first temperature (T ₁ ) is defined as the storage battery voltage (V _S1 ), the first temperature (T ₁ ) and the storage battery voltage (V _S1 ) Based on this, the storage battery voltage (V _S ) at the time of engine start at the _second temperature (T ₂ ) set virtually lower than the first temperature (T ₁ ) is predicted as the storage battery voltage (V _S2 ). Engine startability prediction comprising prediction means for predicting engine startability at the second temperature (T ₂ ) based on the storage battery voltage (V _S2 ) and notification means for notifying the prediction result of the prediction means The apparatus is shown.

The invention according to claim 2 of the present invention is the engine startability predicting apparatus according to claim 1, wherein the predicting means is an arbitrary one based on the first temperature (T ₁ ) and the storage battery voltage (V _S1 ). A first function (V _S = f (T)) indicating a relationship between the storage battery temperature (T) and the storage battery voltage (V _S ) at the time of starting the engine is generated, and the second temperature ( T storage battery voltage at the start of the engine performed in ₂₎ (V _S2) (wherein, V _S2 = f (T ₂₎ acquires the), the engine start by the value of the second battery voltage (V _S2) It is characterized by predicting sex.

The invention according to claim 3 of the present invention is the engine startability predicting apparatus according to claim 2, wherein the first function (V _S = f (T)) is an n-order function represented by equation (1). It is characterized by that.

The invention according to claim 4 of the present invention is the engine startability predicting apparatus according to claim 2, wherein the second function indicates a relationship between the internal resistance (R) of the storage battery and the storage battery temperature (T). (R = g (T)) is stored, and the engine storage current (I) value is stored in the data storage means, and the first function (V _S = f (T)) is expressed by the equation The function is as shown in (2).

Further, the invention according to claim 5 of the present invention is the engine startability predicting device according to claim 4, wherein the first storage battery voltage (measured at the time of engine start performed at the _first temperature (T ₁ )) ( The engine starting current (I) value is obtained based on V _S1 ).

According to a sixth aspect of the present invention, in the engine startability predicting apparatus of the first aspect, a standard temperature set in advance from a storage battery voltage (V _S1 ) at the time of engine start at the _first temperature (T ₁ ). The battery voltage (V _SR ) at the time of engine start at (T _R ) is obtained by the first temperature correction, and the engine start voltage (V _S2 ) at the second temperature (T ₂ ) is obtained from the V _SR at the second temperature. It is obtained by correction.

Furthermore, the invention according to claim 7 of the present invention is the engine startability predicting device according to any one of claims 1 to 6, wherein a plurality of the second temperatures (T ₂ ) are set, and each T ₂ The engine startability prediction result is notified by the notification means.

The invention according to claim 8 of the present invention, the engine startability prediction apparatus according to claim 1, wherein the second temperature (T ₂₎ sets a plurality of, in each of T ₂ The engine startability prediction is performed, and the minimum value of the _second temperature (T ₂ ) at which engine start is predicted to be possible is notified by the notification means.

Furthermore the invention according to claim 9 of the present invention, the engine startability prediction apparatus according to claim 1, wherein the second temperature (T ₂₎ sets a plurality of engine in each of the T ₂ The startability prediction is performed, and the maximum value of the _second temperature (T ₂ ) at which the engine start is predicted to be impossible is notified by the notification means.

  And the invention which concerns on Claim 10 of this invention shows the storage battery for starting which was integrally equipped with the engine startability prediction apparatus in any one of Claims 1-9.

  By using the engine startability predicting device of the present invention or the starter storage battery equipped with the same, when the storage battery temperature is expected to decrease due to vehicle operation to a cold region, etc., the engine start prediction taking into account the decrease in the storage battery temperature It can be performed. Based on this prediction, the user can perform appropriate maintenance such as replacing the storage battery or performing supplementary charging. Therefore, it solves the problem that the engine cannot be started when moving to the destination (cold region) even though the engine can be started at the departure point (warm region), which has occurred in the past. It is extremely useful industrially because it has a remarkable effect that is not found in the past.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an engine startability predicting apparatus 1 according to an embodiment of the present invention. The engine startability predicting apparatus 1 of the present invention has a voltage measuring means 3 for measuring a storage battery voltage (V _S ) at the time of engine start of a storage battery 2 mounted / mounted on a vehicle (not shown). When starting the engine, a starting current flows from the storage battery 2 to the engine starter, so the storage battery voltage (V) decreases as shown in FIG. 2, and when the engine start is completed, the storage battery is charged by the regulator, and the storage battery voltage (V) Will rise.

Here, the storage battery voltage (V _S ) is intended to measure the minimum voltage at the start of the engine, but actually, the storage battery voltage (V) is measured continuously at a time interval of several milliseconds, and the measurement data May be treated as the storage battery voltage (V _S ) at the time of starting the engine. In addition, the engine startability predicting apparatus 1 includes a temperature measuring means 4 using a temperature sensor such as a thermistor.
Then, while measuring the battery temperature (T) at any engine start as the first temperature (T _1), measuring the battery voltage when the (V _S) as battery voltage (V _S1). The storage battery voltage (V _S1 ) and first temperature (T ₁ ) data are sent to the prediction means 5.

Then, the prediction means 5 uses the data of the storage battery voltage (V _S1 ) and the first temperature (T ₁ ), at the second temperature (T ₂ ) that is set virtually lower than the first temperature (T ₁ ). Predict the battery voltage (V _S2 ) at engine start. Here, the second temperature (T ₂ ) is set in advance to an outside air temperature assuming that the destination of the vehicle is a cold district. For example, a value such as 0 ° C. or −15 ° C. is set.

The predicting means 5 further determines whether the engine can be started when the storage battery temperature (T) is the second temperature (T ₂ ) based on the predicted storage battery voltage (V _S2 ) data. Make a prediction. This prediction can be made by comparing the storage battery voltage (V _S2 ) with a certain determination voltage (V _R ). For example, it may be determined that the engine can be started when V _S2 ≧ V _R , and the engine cannot be started when V _S2 <V _R. Note that when the storage battery 2 is 12V system lead-acid battery, it is possible to use the value of 6.0V~7.0V as the determination voltage (V _R).

  Then, the prediction result in the prediction means 5 is notified to the user by the notification means 6. This notification can be performed by, for example, a display means such as a light emitting diode or a liquid crystal panel, a buzzer, or the like.

According to such an engine startability predicting apparatus of the present invention, the temperature at the time of starting the engine (first temperature (T ₁ )) and the storage battery voltage (V _S1 ) at the time of departure of the vehicle are measured, and based on these values. Thus, by predicting the storage battery voltage (V _S2 ) at the temperature of the arrival place (second temperature (T ₂ )), the engine startability when the engine is restarted at the arrival place can be predicted. That is, since the arrival place is a cold place, it can be predicted that the engine can be started at the departure place but the engine cannot be started at the arrival place. Based on the engine start prediction result, the vehicle user can perform appropriate maintenance such as replacement of the storage battery, supplementary charging, etc., and as a result, it is possible to prevent the engine from being disabled.

Here, a preferable example of the step of predicting the storage battery voltage (V _S2 ) at the time of engine start at the _second temperature (T ₂ ) by the predicting means 5 will be shown below.

1) First Prediction Step for Storage Battery Voltage (V _S2 ) In the first prediction step, the first temperature (T ₁ ) when the storage battery voltage at the time of engine start at an arbitrary storage battery temperature (T) is V _S. And a function indicating the relationship between the storage battery temperature (T) and the storage battery voltage (V _S ) based on the storage battery voltage (V _S1 ) at the time of starting the engine (V _S = f (T), hereinafter referred to as the first The battery voltage (V _S2 ) is obtained by substituting T ₂ for the variable T of the first function.

  As a method for obtaining the first function, the following step A can be used.

That is, the storage battery voltage (V _S ) at the time of starting the engine is measured in advance by varying the engine starting current (I) and the storage battery temperature (T) for the storage battery 2. Based on this measurement result, a function indicating the relationship between the storage battery temperature (T) and the storage battery voltage (V _S ) at the time of engine start is set for each engine start current (I). As an example, it is possible to use an n-order function of T shown in Expression (1) in which V _S is obtained from the correlation between T and V _S by the least square method or the like.

  Expression (1) is obtained in advance by experiment for each engine starting current (I) and stored in a storage means 7 such as a memory provided in the engine startability predicting apparatus 1.

Data of the storage battery voltage (V _S1 ) at the time of engine start performed at an arbitrary first temperature (T ₁ ) is acquired by the voltage measuring means 3. Then, by substituting the temperature T ₁ measured by the temperature measuring means 4 into the relational expression between V _S1 and T ₁ set for each engine starting current (I), the storage battery voltage (V _S1 ′) for each engine starting current (I) is substituted. ) The 'absolute value from the V _S1 Metropolitan determined by actual measurement of both difference _{| ΔV S1 | (= | V} S1 -V S1' | relationship by the determined V _S1) obtained. Engine starting current (I) Toko of | [Delta] V _S1 | in relation to | [Delta] V _S1 | is the minimum engine starting current (I ₀₎ battery temperature corresponding to the (T) and battery voltage at the start of the engine (V _S) And the first function (V _S = f (T)) may be obtained by referring to the relational expression from the storage means. Then, by substituting the preset second temperature (T ₂ ) into the first function, the storage battery voltage (V _S2 ) at the time of starting the engine at the _second temperature (T ₂ ) can be obtained.

  Further, in place of the above-described step A, the first function can be set by the following step B.

In step B, an approximate function R = g (T) (second function) obtained from the data of the internal resistance value (R) according to the storage battery temperature (T) of the storage battery 2 in the storage means 7 by the least square method or the like. ) Is stored. The second function (R = g (T)) and any battery voltage when starting the engine from the battery voltage at the time of engine starting (V _S1) of the storage battery temperature T at the battery temperature (T ₁₎ (V _S) of formula It is indicated by (3).

Here, {g (T) −g (T ₁ )} is an increase in the internal resistance of the storage battery when the storage battery temperature decreases from T ₁ to T, and this is multiplied by the engine starting current (I). A drop in storage battery voltage due to temperature change is calculated. The engine start voltage V _S at the storage battery temperature (T) can be calculated by subtracting this drop from V _S1 . That is, the first function (V _S = f (T)) can be set as shown in Expression (2) by using Expression (3).

  In step B, the value can be stored in advance in the storage means 7 as the engine starting current (I), and the value can be referred to when necessary. In this case, the I value is set to a single value, but since it varies depending on the vehicle, it is more preferable to set it for each vehicle. The following method can be used as a method for setting the engine starting current (I).

That is, the storage battery voltage (V _S1 ) at the time of engine start performed at an arbitrary first temperature (T ₁ ) is acquired by the voltage measuring means 3. Then, by substituting the temperature T ₁ measured by the temperature measuring means 4 into the relational expression between V _S1 and T ₁ set for each engine starting current (I), the storage battery voltage V ( _S1 ′ for each engine starting current (I) is substituted. ) This relationship 'absolute value of the difference between them from V _S1 Metropolitan determined by measurement and _{| ΔV S1 | (= | V} S1 -V S1' | V S1 obtained by equation) is obtained, engine starting current (I) and = | [Delta] V _S1 | in relation to | [Delta] V _S1 | Find the smallest engine starting current (I _0). Then, the engine starting current value (I) = I ₀ may be substituted into equation (2). Then, by substituting the preset second temperature (T ₂ ) into the first function, the storage battery voltage (V _S2 ) at the time of starting the engine at the _second temperature (T ₂ ) can be obtained.

2) Second Prediction Step of Storage Battery Voltage V _S2 The second prediction step described below can be used instead of the first prediction step of the storage battery voltage (V _S2 ).

In this second prediction step, the storage battery voltage (V _SR ) at the engine start at the standard temperature (T _R ) is corrected from the storage battery voltage (V _S1 ) at the engine start at an arbitrary first temperature (T ₁ ). Ask. Thereafter, the storage battery voltage (V _S2 ) at the time of starting the engine at the _second temperature (T ₂ ) set lower than the arbitrary first temperature (T ₁ ) is obtained by correcting the temperature from the storage battery voltage (V _SR ). Is.

In such a second prediction step, V _S1 and the second temperature (T ₂ ) are simply calculated based on the temperature gradient of the storage battery voltage from the temperature difference ΔT between the first temperature (T ₁ ) and the second temperature (T ₂ ). Unlike the method of obtaining V _S2 from ₂ ), it is possible to predict V _S2 with higher accuracy. In such a method of simply obtaining V _S2 from the temperature difference ΔT and the temperature gradient, the temperature gradient must be set constant over the entire temperature range. In practice, an appropriate temperature gradient is obtained depending on whether the temperature range of the second temperature (T ₂ ) -first temperature (T ₁ ) is -15 ° C to 15 ° C or -10 ° C to 40 ° C. Must be set. In a preferred example of the present invention, the first correction coefficient α is independent between the first temperature (T ₁ ) and the standard temperature (T _R ) and between the standard temperature (T _R ) and the second temperature (T ₂ ). Further, by setting the second correction coefficient β, it is possible to predict V _S2 with higher accuracy.

An example of this second prediction step is described below. Using the first correction factor α, the storage battery voltage (V _SR ) at the standard temperature (T _R ) from the storage battery voltage (V _S1 ) at the time of starting the engine at an arbitrary first temperature T ₁ (4) Calculated by Table 1 shows an example when the first correction coefficient α is set to T _R = 25 ° C.

The storage battery voltage (V _SR ) at the time of engine start at the standard temperature (T _R ) is predicted by the first correction coefficient α shown in Table 1. Formula (4) can be used as an example of this prediction formula.

Then, the storage battery voltage (V _S2 ) at the time of starting the engine at the _second temperature (T ₂ ) set virtually lower than the first temperature (T ₁ ) using the second correction coefficient β from the V _SR value. Ask for. Table 2 shows an example of the second correction coefficient β when T _R = 25 ° C.

Using formula (5) as an example of a calculation formula for _obtaining V _S2 from the storage battery voltage (V _SR ) at the time of engine start at the standard temperature (T _R ) by using the second correction coefficient β shown in Table 2. it can. Here, as an example, when the second temperature (T ₂ ) is −10 ° C., β = 1.35.

The first correction coefficient α and the second correction coefficient β shown in Table 1 and Table 2 are values set according to the storage battery 2, respectively, and are limited to the values shown in Table 1 and Table 2. It is not a thing. Moreover, Formula (4) and Formula (5) are examples, and according to the characteristic of a storage battery, the approximate expression which shows the relationship between V _S1 -V _SR from the measured value, and the approximation which shows the relationship between V _SR -V _S2 The equation may be set by the least square method or the like.

The storage battery voltage at the time of starting the engine measured by the voltage measuring means 3 by starting the engine under the temperature condition of the _first temperature (T ₁ ) by the first prediction step or the second prediction step described above. It predicts the battery voltage when starting the engine (V _S2) in a second temperature which is virtually set lower than the first temperature from _{(V S1) (T 1)} (T 2), and the V _SR value The engine startability is predicted by comparing the determination voltage (V _R ) for predicting the engine startability.

Furthermore, a plurality of second temperatures (T ₂ ) can be set in the configuration of the present invention described above. For example, the second temperature (T ₂ ) is set to 0 ° C., −5 ° C., −10 ° C., and −15 ° C., and the engine startability prediction result at each T ₂ is notified by the notification means 6. For example, an LED is provided according to each T ₂ , the LED corresponding to the second temperature (T ₂ ) predicted to be able to start the engine is green, and the second that is predicted to be impossible to start the engine By turning on the LED corresponding to the temperature (T ₂ ) in red, the user can intuitively understand the notification content.

Further, the same manner as described above second temperature (T ₂₎ a plurality of settings, after performing engine start prediction in each of T _2, a second temperature which is expected to allow engine starting (T ₂₎ It is also preferable to notify the minimum value of the value by the notification means. For example, when the prediction results at 0 ° C. and −5 ° C. can start the engine, and the prediction results at −10 ° C. and −15 ° C. cannot start the engine, the notification means 6 sets the minimum temperature at which the engine can be started as “ “−5 ° C.” can be displayed by a segment LED or a liquid crystal panel. The user can perform appropriate maintenance such as replacement and supplementary charging for the storage battery 2 by comparing the display temperature with the predicted temperature of the arrival place.

  Further, instead of displaying the minimum temperature at which the engine can be started as described above, it is also possible to display the maximum temperature at which the engine cannot be started. When the prediction results at −10 ° C. and −15 ° C. indicate that the engine cannot be started, “−10 ° C.” can be displayed on the notification means 6 as the maximum temperature at which the engine cannot be started by the segment LED or the liquid crystal panel.

Needless to say, if the second temperature (T ₂ ) at this time is set at a relatively narrow temperature interval, for example, at 0.5 ° C. intervals, a finer temperature display is possible.

  In addition, the engine startability prediction device 1 of the present invention described above can be provided integrally with the storage battery 2. In this case, if a storage part (not shown) for storing the engine startability predicting device 1 is provided on the lid (not shown) of the storage battery 2 and an electrical connection is made between the engine startability predicting device 1 and the storage battery terminal. good.

The configuration of the present invention described so far, the storage battery temperature first temperature (T ₁₎ conditions lower than the first temperature (T _1), when reduced to second temperature (T ₂₎ The engine startability can be predicted. Alternatively, it is possible to predict the temperature at which the engine can be started. Furthermore, it is necessary to set parameters according to the characteristics of the storage battery 2 in both the first prediction step and the second prediction step. Therefore, the engine startability predicting device of the present invention is more preferably provided integrally with the storage battery.

  By knowing in advance whether or not the engine can be started when the temperature drops suddenly, such as when moving to a cold region, or in winter, the vehicle user can take appropriate measures before the engine cannot be started due to a temperature drop. It is useful because it provides a prediction method and a prediction device for low temperature engine startability.

The figure which shows the engine startability prediction apparatus of the storage battery for start-up of this invention The figure which shows the time change of the storage battery voltage (V) at the time of engine starting

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine startability prediction apparatus 2 Storage battery 3 Voltage measurement means 4 Temperature measurement means 5 Prediction means 6 Notification means 7 Storage means

Claims (10)

An engine startability predicting device for predicting startability of an engine started by a storage battery,
A temperature measuring means for measuring the storage battery temperature (T),
Voltage measuring means for measuring a storage battery voltage (V _S ) when the engine is started at the storage battery voltage (T);
The storage battery temperature (T) at the time of any engine start is set as the first temperature (T ₁ ),
When the storage battery voltage measured at the time of starting the engine at the first temperature (T ₁ ) is V _S1 , the first temperature (T ₁ ) and the _first storage battery voltage (V _S1 ) The storage battery voltage at the time of engine start at the _second temperature (T ₂ ) set virtually lower than the temperature T ₁ of the engine is estimated as V _S2 ,
And a prediction means for predicting engine startability at the second temperature (T ₂ ) based on the storage battery voltage (V _S2 ), and a notification means for notifying a prediction result in the prediction means. An engine startability prediction device. The prediction means, first shows the relationship between the first temperature (T ₁₎ and the battery voltage (V _S1) to the basis with battery voltage during engine start at any of the battery temperature (T) (V _S) A function (V _S = f (T)) of 1 is generated, and the storage battery voltage (V _S2 where V _S2, where V 1 is the engine temperature when the engine is started at the second temperature (T ₂ ) from the first function. _2. The engine startability predicting apparatus according to claim 1, wherein _S2 = f (T ₂ )) is acquired and engine startability is predicted based on a value of the storage battery voltage (V _S2 ). 3. The engine startability predicting apparatus according to claim 2, wherein the first function (V _S = f (T)) is an n-th order function shown in Expression (1).

Data storage means storing a second function (R = g (T)) indicating a relationship between the internal resistance (R) of the storage battery and the storage battery temperature (T) is provided, and the data storage means includes an engine starting current. The engine startability predicting apparatus according to claim 2, wherein (I) a value is stored, and the first function (V _S = f (T)) is a function represented by the formula (2).

5. The engine starting current (I) value is obtained based on a _first storage battery voltage (V ₁ ) measured at the time of engine starting performed at the _first temperature (T ₁ ). Engine startability prediction device. A storage battery voltage (V _SR ) at the time of starting the engine at a preset standard temperature (T _R ) is obtained by a first temperature correction from a storage battery voltage (V _S1 ) at the time of starting the engine at the _first temperature (T ₁ ). _2. The engine startability predicting apparatus according to claim 1, wherein an engine start voltage (V _S2 ) at the second temperature (T ₂ ) is obtained from the V _SR by a second temperature correction. Said second temperature (T ₂₎ sets a plurality of engine startability according to engine startability prediction result in each of T ₂ to claim 1, wherein when a notice by the notification means Prediction device. By said second temperature (T ₂₎ set multiple performs engine start prediction in each of T _2, second temperature (T ₂₎ the notifying means the minimum value of which is expected to enable engine start The engine startability predicting device according to any one of claims 1 to 7, wherein notification is made. A plurality of the second temperatures (T ₂ ) are set, the engine startability is predicted at each T ₂ , and the second temperature (T ₂ ) maximum value at which the engine start is predicted to be impossible is determined by the notification means. The engine startability predicting device according to any one of claims 1 to 8, wherein notification is made. A starting storage battery comprising the engine startability predicting device according to any one of claims 1 to 9 integrally.

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