AU2005100947A4 - Automatic Detection Device for Checking Accumulator Capacitance - Google Patents

Description

Our Ref: 3407inno P/00/009 Regulation 3.2

AUSTRALIA

Patents Act 1990 INNOVATION SPECIFICATION FOR AN INVENTION ENTITLED Invention title: Automatic Detection Device for Checking Accumulator Capacitance Name of Applicant: Quitewin Technology Corporation Address for Service A.P.T. Patent and Trade Mark Attorneys PO Box 222 Mitcham, S.A. 5062 The invention is described in the following statement: AUTOMATIC DETECTION DEVICE FOR CHECKING 0 ACCUMULATOR CAPACITANCE

Z

BACKGROUND OF THE INVENTION t-- Field of the Invention SThe present invention provides an automatic detection device for checking accumulator capacitance.

Description of the Prior Art In the wake of incessant changes in modern technology, and continuous renewal of power equipment, a fault often committed by people is to forget to switch off the lights of a vehicle before switching off the vehicle engine or, when the vehicle engine is turned off, play music or have a fan or overtaking lights switched on for long periods of time, thereby easily causing excessive discharge of the vehicle power supply device and accumulator, resulting in burn out and damage thereto, which further results in the accumulator being unable to operate normally. In addition, an impact or huge current from a power short circuit also easily results in serious accidents occurring including the accumulator burn out, the vehicle catching fire, and so on. However, the reason for many of these accidents occurring is because of -la- O complications caused by current power supply devices lacking 0 automatic detection and adjustment and power cut functions, resulting z in power overload and breakdown in the power supply device.

Hence, the inventor of the present invention proposes to resolve and surmount existent technical difficulties to eliminate the aforementioned V shortcomings of prior art.

SFor the purposes of this specification the word "comprising" means "including but not limited to", and the word "comprises" has a corresponding meaning. Also a reference within this specification to a document is not to be taken as an admission that the disclosure therein constitutes common general knowledge in Australia.

SUMMARY OF THE INVENTION The present invention provides an automatic detection device for checking accumulator capacitance, which uses periodic setting of an adjustable timer circuit so that when a power supply protection device detects that the power system is over discharging or there is an abnormal short circuit, the automatic detection device can automatically cut off power to an accumulator by means of a power supply protection device. Moreover, a capacitance detection circuit further functions in coordination with the automatic detection device to ensure that the state -2o of the accumulator is displayed by means of a control circuit and a 0 capacitance display circuit, thereby enabling full use of the system to be z achieved without breakdowns, while further providing an advance warning function before damage occurs.

To enable a further understanding of said objectives and the n technological methods of the invention herein, brief description of the drawings is provided below followed by detailed description of the preferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a circuit wiring diagram according to the present invention.

FIG. 2 shows a circuit block diagram according to the present invention.

FIG. 3 shows a flow chart of an embodiment according to the present invention.

FIG. 4 shows a 4051B truth table according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1, 2 and 3, the present invention provides an automatic detection device A for checking accumulator capacitance, structured to comprise a timer circuit B, a power supply protection -3- O device C, a voltage detection circuit C1, a current detection circuit C2, a 0 capacitance detection circuit D, a control circuit D1, a capacitance z display circuit D2, a malfunction display circuit D4, a load E and an accumulator F.

The present invention is characterized in that the adjustable timer V circuit B is periodically set to carry out automatic detection of the power state of the accumulator F, and detection and display of the state of the power supply enables the adjustable timer circuit B together with an electronic cut-over switch B1 to function in coordination with the capacitance display circuit D2 to switch over the state of the accumulator F. Moreover, a time counter B2 and an electronic multiplier B3 enables adjustment and capacitance checking of the accumulator F by means of the adjustable timer circuit B.

The voltage detection circuit Cl and the current detection circuit C2 of the power supply protection device C are used as level reference comparisons, and, together with detection of abnormality in voltage and current of the accumulator F, the accumulator F power supply can be shut down by means of the power supply protection device C when there is an abnormality in the power supply, thereby achieving protection of the load E. Moreover, through different system states, automatic detection of the electric quantity of the accumulator F enables 0 processing of the voltage and current power state to ensure protection z of the load E.

The control circuit D1 of the capacitance detection circuit D, together with light-emitting diodes D3 and the malfunction display circuit D4 In function in coordination for the automatic detection device A to carry out capacitance checking of the accumulator F, and further ensure separation of the accumulator F and the load E. Moreover, the capacitance display circuit D2 further functions in coordination with the adjustable timer circuit B to enable observing whether or not the accumulator F has achieved adequate power.

Referring again to FIG. 1, which shows an embodiment of the present invention, wherein the automatic detection device A uses output voltage of an operational amplifier J and a manostat circuit I to carry out analysis of capacitance and amperage. When the output voltage is lower than a protection voltage or when the current is excessive, then a signal is transmitted to a stop circuit L to execute an automatic power cut function. If everything is normal, then light signals of the lightemitting diodes D3 display capacitance and amperage of the accumulator F. The timer circuit B additionally configures the power O supply protection device C with the electronic cut-over switch B1, the 0 time counter B2 and the electronic multiplier B3.

z The adjustable timer circuit B is installed in parallel to the voltage detection circuit Cl and the current detection circuit C2, thus, when the voltage of the accumulator F is greater than a reference voltage, then V power is supplied to the circuit, and when voltage of the accumulator F Sis lower than the reference voltage and exceeds a set time, then the accumulator F power supply is cut off to the load E. Moreover, the capacitance detection circuit D is installed in parallel to the voltage detection circuit Cl and the current detection device C2, thus, when the voltage of the accumulator F is lower than the reference voltage and exceeds the set time of the timer circuit B, or when the current detection circuit C2 detects an abnormality, then the accumulator F power supply is automatically cut off to the load E, thereby achieving a protective effect. Furthermore, when the voltage and current supply are normal, then the light-emitting diodes D3 display capacitance and amperage of the accumulator F.

The voltage detection circuit C1 together with the current detection circuit C2 of the power supply protection device C check the accumulator F and transmit a current signal needed for constant current -6control, thereby enabling the automatic detection device A to acquire 0 the current signal of the accumulator F. A separating function prevents z the control circuit D1 from being subjected to interference from the power supply circuit. When rated 100 amps and the turns ratio is 1/1000, a current of 1 amp flowing through the primary loop enables the secondary loop to acquire a current of 0.001 amps. Moreover, electric resistance H of the current flowing through the secondary loop output terminal series connection generates a voltage of 0.1 volts that coordinates with amplification of the operational amplifier J.

The automatic detection device A is able to measure voltage value corresponding to amperage. Moreover, the current detection circuit C2 uses the operational amplifier J to produce an equivalent direct current value, which is then sent through an amperometry circuit for analysis.

When the current is below 10 amps, then the operational amplifier J outputs when the current is between 10 amps and 20 amps, then the operational amplifier J outputs and and when the current has reached 20 amps, then the operational amplifier J outputs Furthermore, when the current has reached a safety current set value, the operational amplifier J outputs and then cuts off the power supply to the load E.

Referring to FIGS. 3 and 4, after actuation G, it is determined whether 0 or not a power cut state G2 has occurred, and, if so, then the timer

Z

circuit B is skipped, normal discharge G3 is started and the power supply protection device C is simultaneously actuated. When the voltage is lower than the safety voltage or the current exceeds the V) safety current, then the power supply is cut off to protect the system.

After the power supply is restored, the system switches over to continue charging GI. If it is determined that there is no power cut, then the timer circuit B is actuated, and when it has achieved the original set selfdetection period, then the self-test discharge G3 is started, and the power protection circuit device C is simultaneously actuated.

When an abnormality occurs, a malfunction signal is transmitted to malfunction display circuits K, K1, which transmit malfunction sound signals through a malfunction warning circuit K2. After the system is checked for normality G4, then the system returns to the charging G1 state after a set discharge G3 period and continues to wait for the next test period.

Furthermore, the power supply protection device C is able to separate the current into no load current XO, low load current Xl, high load current X3 and excessive load current X4. When the load is different, a O different capacitance detection circuit D can be chosen in order for the 0 capacitance display circuit D2 functioning in coordination with the

Z

control circuit D1 to acquire and determine accurate capacitance. When there is an abnormality in the accumulator F capacitance, the malfunction display circuits K, K1 transmit malfunction sound signals V through the malfunction warning circuit K2. When the system is seriously damaged, then a signal is transmitted to the stop circuit L to cut off the power supply. The electronic cut-over switch B1 is installed to separate the power supply protection device C, thus, when there is an excessive load E current, the power supply protection device C is disconnected.

Furthermore, when the power supply load is in a different state, the control circuit D1 in contrast to the three current states of the no load current XO, the low load current Xl and the high load current X3 respectively has divided voltages of different impedance to correspond to output terminals of the operational amplifier J. Moreover, after dividing the voltage of the accumulator F, when the operational amplifier J is smaller than the reference voltage, a corresponding bright red lamp is used to warn that the accumulator F capacitance is inadequate. When the operational amplifier J is larger than the reference voltage, an O extinguished lamp signal indicates that the accumulator F capacitance 0 is adequate. However, the other lamp signals still need to be observed z in order to confirm whether or not the accumulator F has achieved adequate capacitance.

When the operational amplifier J is smaller than the reference V voltage, a yellow lamp lit up by a corresponding lamp signal indicates that the accumulator F needs charging. Moreover, when the operational amplifier J is greater than the reference voltage, a corresponding lamp signal lights up a green lamp. When the corresponding yellow lamp does not light up, then it indicates that the accumulator F capacitance is still at a tolerable level. Moreover, when the operational amplifier J is greater than the reference voltage, the corresponding green light lights up to indicate that the accumulator F capacitance is at an adequate level, and the more light lamps that light up the more it indicates greater capacitance of the accumulator F.

When the operational amplifier J is smaller than the reference voltage, and a corresponding lamp signal does not light up, then it indicates that the accumulator F has not reached a corresponding capacitance. Hence, it can be known whether the capacitance of the accumulator F is adequate or not by reference to the state of the lamp signals. Furthermore, the capacitance detection circuit D can be 0 manually operated to observe whether or not the accumulator F z capacitance has achieved adequate capacitance under different loads.

In order to better explicitly disclose advancement and practicability of the present invention, a comparison with conventional art is described V) hereinafter: Shortcomings of conventional art: 1. Excessive discharge of the power supply device and accumulator easily results in burn out and damage.

2. The power supply device lacks automatic detection adjustment and automatic power cut functionality.

3. Impact or huge current of a power supply short circuit easily causes accumulator burn out.

4. Excessive discharge of the power supply device easily results in the situation whereby the accumulator is unable to operate normally.

Advantages of the present invention: 1. Provided with automatic detection functionality that reduces occurrence of the accumulator burn out and damage thereto.

2. When the power supply is abnormal, the power supply protection device C provides automatic power cut-off functionality.

-11 O 3. The power supply protection device C can prevent the accumulator o F from excessive electric discharge.

z 4. The automatic detection device A is not easily affected by huge currents, and thus protects the accumulator F from burn out.

5. Provided with functionality to check whether or not the accumulator F capacitance is adequate or not.

S6. Provided with practicability and advancement.

7. Enhances commercial competitiveness.

In conclusion, the present invention in overcoming structural shortcomings of prior art has assuredly achieved effectiveness of anticipated advancement, and, moreover, is easily understood by persons unfamiliar with related art. Furthermore, contents of the present invention have not been publicly disclosed prior to this application, and practicability and advancement of the present invention clearly comply with essential elements as required for a new patent application.

Accordingly, a new patent application is proposed herein.

It is of course to be understood that the embodiments described herein are merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as -12set forth in the following claims.

0 13-

Claims (2)

1. 2. The automatic detection device for checking accumulator capacitance -14- according to claim 1, wherein the capacitance display circuit functioning in coordination with manual operation of the adjustable timer circuit enables observing accumulator capacitance, thereby determining whether or not there is adequate power supply.
2. 3. An automatic detection device for checking accumulator capacitance, n substantially as disclosed herein with reference to the accompanying drawings. Dated this 14th day of November 2005 QUITEWIN TECHNOLOGY CORPORATION By their Patent Attorneys A.P.T. Patent and Trade Mark Attorneys Paul Wyk