JPH07274405A - Water-refilling and charging device for battery - Google Patents

Abstract

PURPOSE:To provide a water-refilling and charging device for batteries capable of performing charging operation after securing a necessary amount of battery solution, and of evading the breakage of batteries and the shortening of the life. CONSTITUTION:The title water-refilling and charging device for batter has a water refilling actuator 13 for supplying a battery solution to batteries, a water refilling controller 1 for controlling the water supplementing actuator so that the surfaces of the battery solution may be at a specified level, a charger for charging the batteries, and a charging controller 5 for controlling the charge operation by the charger. On this occasion, the water refilling device 1 has an interlocking means which blocks charge operation when the battery solution surfaces are lower than the specified level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water replenishing / charging device for supplying a battery liquid to a battery of an electric vehicle such as an electric vehicle or a forklift and for charging the battery.

[0002]

2. Description of the Related Art Conventionally, for example, in an electric vehicle, water replenishment work is performed manually based on the display of a warning light for battery liquid attached to an instrument panel or the like, and following this work or when necessary. It is common to perform charging work.

[0003]

However, in the above-mentioned conventional method, the replenishment work and the recharging work of the battery liquid are carried out independently and manually, so that the required battery liquid amount is not replenished. There is a case where the charging work is performed in a state that is not enough. If charging continues in such a state of insufficient battery fluid, problems such as shortening of battery life and, in extreme cases, damage to the battery occur.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to carry out the charging operation after securing the liquid amount of the battery, thereby avoiding damage to the battery and shortening of the life of the battery. The purpose is to provide a water replenishing / charging device.

[0005]

According to a first aspect of the present invention, there is provided a water replenishment / charging device for a battery for replenishing and charging the battery of an electric vehicle, and a replenishment actuator for supplying a battery liquid to the battery, and a battery level. When the liquid level of the battery is equal to or lower than the predetermined level, a rehydration controller that controls the rehydration actuator so that the battery level is below a predetermined level, a charging device that charges the battery, a charging controller that controls a charging operation by the charging device, And an interlock means for preventing charging by the charging device.

[0006]

According to the battery water replenishment / charging device of the present invention, the water replenishment controller controls the water replenishment actuator so that the battery fluid level becomes the predetermined level, and the charge controller controls the charging operation by the battery charger. In this case, when the liquid level is below a predetermined level, the interlock means prevents charging by the charging device. Therefore, it is possible to avoid charging work in a state where the required battery fluid amount is not secured, and thus to avoid damage to the battery and shortening of the service life.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 8 are diagrams for explaining a battery water replenishing / charging device according to an embodiment of the present invention, FIG. 1 is a block diagram showing the configuration of the device of the present embodiment, and FIG. 2 is a diagram of the device of the present embodiment. Waveform diagram for explaining the error code, Figure 3
Is a chart diagram for explaining the operation of the apparatus of the present embodiment, and FIGS. 4 to 8 are flow charts for explaining the operation of the apparatus of the present embodiment.

In these figures, 1 is an actuator (water replenishment actuator) based on a signal from the sensor 2.
3 and the display device 4, which is a water replenishment controller. The water replenishment controller 1 is connected to a charge controller 5 that controls a battery charging device (not shown). Power is supplied from the charging connector 6 and the sub-battery 7 to the water replenishment controller 1, and a forced charge start switch 9 that starts charging regardless of the signal from the sensor 2 is provided. It is connected.

Although not shown, the water replenishment controller 1 is provided with an error code display LED inside the case so that it can be confirmed from the outside. The method of displaying the error code by the LED is, for example, as shown in FIG. 2, by displaying the error code "2" by turning on the LED twice at 0.5 second intervals, and then stopping for 2 seconds. Is repeated.

The sensor 2 includes a battery liquid level sensor (A) 10 for detecting that the liquid level of the battery is at a high level or higher, and a battery liquid level for detecting that the liquid level is at a low level or lower. A sensor (B) 11 and a tank liquid level sensor 12 for detecting that the liquid level of the refill water tank is below a predetermined level are provided. The actuator 3 includes a replenishing water pump 13 that replenishes the battery with battery fluid, and an air blow pump 14 that removes H ₂ gas and the like generated in the liquid tank of the battery. Further, the display device 4 includes a warning lamp 15 and a warning buzzer 16 which warn that the liquid level of the battery liquid is below a low level, and an incomplete charging lamp which indicates that the state of charge of the battery is insufficient. 17 and 17. The warning buzzer 16 also has a function of warning that the liquid level of the replenishing water tank is below a predetermined level, and gives a different tone color when the battery liquid is warned.

Next, the operation of the battery water replenishing / charging device thus constructed will be described with reference to the chart of FIG. When power is supplied to the water replenishment controller 1 from the connector 6, the system is activated, and the water replenishment pump 13 is driven and stopped in accordance with the battery liquid level. The charging operation is prohibited while the replenishment signal (ABT1) is being output.

When a charging device (not shown) is controlled by the charging controller 5 and charging is started, the supplementary water permission signal (ABTO) output from the charging controller 5 is not input to the supplementary water controller 1 and the supplementary water is prohibited. The water replenishment pump 13 does not operate. When charging is completed, a charge completion signal (AUXOUTI) is input from the charge controller 5 to the water replenishment controller 1 and the water replenishment pump becomes operable. The air blow pump 14 is operated at intervals of a predetermined period during charging and traveling.

Next, based on FIG. 4 to FIG.
The charging operation will be described. The system is started,
If the ignition switch is on, after displaying the error code by the above method (steps S1 to S3),
Return to step S2. If the ignition switch is off, the water replenishment signal is output to start water replenishment (step S4). The step S4 is executed within 1 second after the system is started, when the ignition switch is turned off and the charging connector 6 is connected.

When the water replenishment signal is output (step S
4) If the water temperature of the replenishment water tank is not higher than the standard, an error code "1" is output as a water temperature abnormality, the warning tone of tone color A is output from the tank replenishment water warning buzzer 16, and the replenishment water incomplete lamp 17 It is blinked (steps S5 to S7). The tank water refilling warning buzzer 16 is stopped after the designated time has elapsed.

Then, the work waiting timer (1) is started, and the process proceeds to the step S2 until the timer (1) expires, and the water temperature of the replenishing water tank is judged when the ignition switch is off (step S5). ) Is repeated, and when the timer (1) times out, the process proceeds to step S20 shown in FIG. 6 (step S8).

Judgment of water temperature of the refill water tank (step S
In 5), if the water temperature is equal to or higher than the reference, the error code is cleared (step S9), and as shown in FIG. 5, after the warning buzzer 16 and the refill water incomplete lamp 17 are turned off, the liquid level of the battery is judged. Is performed (step S10).
S11). If the battery liquid level is above the low level, the process proceeds to step S34 shown in FIG. 8, and if it is below the low level, the liquid level of the replenishment tank is determined (step S12).

When the liquid level of the replenishing water tank does not meet the standard, an error code "2" is output as an abnormality in the liquid level of the tank (step S13), and the tank replenishing water warning buzzer 16 outputs a warning sound of tone color B. Is output, and the tank replenishment water warning lamp 15 and the replenishment water incomplete lamp 17 blink (step S14). In addition, the lamp 15,
17 and buzzer 15 are stopped after the designated time has elapsed.
Then, the work waiting timer (2) is started, and the process proceeds to step S2 until the timer (2) times out, and when the timer (2) times out, the process proceeds to step S20 shown in FIG. 6 (step S15).

Liquid level determination of the refill water tank (step S1
In 2), if the liquid surface is above the reference, the error code is cleared (step S16), and as shown in FIG.
The warning lamp 15 and the warning buzzer 16 are stopped, the replenishment pump 13 is operated, and the replenishment timer is started (step S17).

After the operation of the replenishment water pump 13, the liquid level of the replenishment water tank is determined. If the liquid level is below the low level, an error code "4" is given as a tank liquid leakage abnormality.
Is output and the water replenishment pump 13 is stopped (steps S18 to S20). If the battery liquid level at this time is less than the low level (step S21),
As shown in FIG. 7, the interlock means of the water replenishment controller 1 outputs a water replenishment signal and blinks the water replenishment incomplete lamp 17 (step S22), and then checks the charging connector 6 and the ignition switch. .

If the charging connector 6 is connected, the process proceeds to step S20 (step S23). When the charging connector 6 is not connected and the ignition switch is turned on, the incomplete water supply lamp 17 is turned off. The error code display mode is set (steps S24 to S).
26).

When the ignition switch is off in step S24 and the charging connector 6 is connected, the process proceeds to step S2, and when the connector 6 is not connected, the process proceeds to step S24 (step S27). ).

Liquid level determination of the battery (step S2
If the battery level in 1) is above the low level,
The replenishment water incomplete lamp 17 is turned off together with the replenishment water signal (step S28), and the process proceeds to step S34 shown in FIG.

Liquid level determination of the refill water tank (step S1
In 8), if the liquid level in the refill water tank is at a low level or higher, the error code is cleared (step S2).
9), as shown in FIG. 8, the liquid level of the battery is determined (step S30). When the liquid level of the battery is below the high level, the process proceeds to step S17 if the replenishment timer has not yet timed out. If the replenishment timer has expired, an error code "3" is output as a replenishment pump error and the process goes to step S20. Transition (steps S31 to S
32).

Liquid level determination of the battery (step S3
In 0), if the liquid level of the battery is higher than or equal to the high level, after a delay of 15 seconds by the timer, the rehydration pump 13 and the rehydration signal are stopped (steps S33 to S34).

When the water replenishment permission signal is turned off, the charge controller 5 starts charging, and the charge completion signal is output, the air blow pump 14 is started and the air blow timer is started (steps S35 to S3).
7) When the air blow timer times out, the air blow pump 14 is stopped, the refilling and charging work is completed, and the sleep mode is entered (steps S38 to S40). Incidentally, the above steps S36, S3
If the condition is not satisfied in step 7, step S34
Move to.

Here, the forced charging start switch 9
When is turned on, an interrupt process is performed from the process D shown in FIG. The error codes are stored in the memory of the water replenishment controller 1.

As described above, in the present embodiment, by the processing in steps S30 and S21 as the interlocking means of the water replenishment controller 1, when the battery level is lower than the low level, the charging by the charging device is blocked and the water replenishment work is performed. Since the charging operation is performed after the completion of the charging operation, the charging operation can be performed after the liquid amount of the battery is reliably ensured, and thus the shortening of the battery life and the damage of the battery can be prevented.

[0028]

As described above, in the battery water replenishment / charging device according to the present invention, the water replenishment controller for controlling the water replenishment actuator, the charging controller for controlling the charging device, and the charging controller for charging the charging controller according to the liquid level of the battery. Since the interlock means for preventing the work is provided, there is an effect that it is possible to avoid charging in a state where the battery liquid is insufficient, and thus it is possible to avoid damage to the battery and shortening of the life.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a battery water replenishing / charging device according to an embodiment of the present invention.

FIG. 2 is a waveform diagram for explaining an error code of the apparatus of the above embodiment.

FIG. 3 is a chart diagram for explaining the operation of the apparatus of the above embodiment.

FIG. 4 is a flowchart for explaining the operation of the apparatus of the above embodiment.

FIG. 5 is a flowchart for explaining the operation of the apparatus of the above embodiment.

FIG. 6 is a flow chart for explaining the operation of the apparatus of the above embodiment.

FIG. 7 is a flowchart for explaining the operation of the apparatus of the above embodiment.

FIG. 8 is a flowchart for explaining the operation of the apparatus of the above embodiment.

[Explanation of symbols]

 1 Replenishment controller (interlock means) 3 Replenishment actuator 5 Charge controller 13 Replenishment pump (replenishment actuator)

Front page continuation (72) Inventor Fumio Nishikawa 2-1-1 Taoyuan Taoyuan, Ikeda City, Osaka Daihatsu Industry Co., Ltd.

Claims (1)

[Claims] 1. A water replenishment / charging device for replenishing water and charging a battery of an electric vehicle, comprising: a water replenishment actuator for supplying a battery liquid to the battery; and a water replenishment actuator for causing the battery liquid surface to reach a predetermined level. A water replenishment controller for controlling, a charging device for charging the battery, a charging controller for controlling a charging operation by the charging device, and an interlock means for preventing charging by the charging device when the liquid level of the battery is below the predetermined level. A water replenishing / charging device for a battery, characterized by comprising: