JP2004071571A - Booster cable device for vehicle battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a booster cable device for a vehicle battery capable of automatically detecting polarity relations of two batteries of an interconnection type and appropriately switching connections between the two batteries according to the detected polarities of each fastener. <P>SOLUTION: A booster cable device (1) is connected to two pairs of fasteners 100, 200. The two pairs of fasteners 100, 200 are attached respectively to the two batteries (A, B) so as to transfer electric power from one battery to another. The booster cable device (1) includes a polarity detecting device (10) and a switching device (40) connected to each fastener, and a current detecting device (50) arranged between the two pairs of fasteners 100, 200. After detecting the polarities of each fastener by the detecting device (10), the switching device (40) provides correct connections between the two batteries (A, B). Accordingly, positive and negative terminals of the two batteries (A, B) are connected correctly according to the detected result of the detecting device (10). <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a booster cable arrangement for a vehicle battery, and in particular, to detect the polarity of two interconnected batteries to ensure that the batteries are safe when the battery is jumped (connected to another power source). In addition, the present invention relates to a booster cable device that can automatically switch a connection relationship between the two batteries.

Generally, a battery can supply operating voltage to all electrical devices attached to the vehicle to start the engine of the vehicle, such as an automobile. Most vehicles are already equipped with an indicator that indicates the state of charge of the battery, but the driver may inadvertently discharge all of the charge.

The main reason for the battery to be fully discharged, or for the battery to run down, is that the driver forgets to turn off the vehicle lights after turning off the engine. If the light is energized for a long time without operating the engine, the power of the battery is continuously consumed by the light. Another reason for a dead or dead battery is that the battery reaches its end of its useful or useful life. Batteries gradually age with use and eventually no longer retain charge. Regardless of the reason for the dead battery, dead battery represents a serious problem in that the dead battery does not start the car engine. A temporary solution to this problem is to have the vehicle's engine "jump start" with another fully charged battery. In this method, two batteries are often electrically connected by a booster cable.

ブ ー ス Conventionally, booster cables including paired cables have been used. Each cable has two ends, and each end is fitted with a clip-like clip. A fastener at each end of the paired cable is adapted to be connected to two poles of the battery, respectively. Generally, the fasteners at one end of a paired cable are colored differently, and the fasteners at the end of the same cable are colored the same, such as red and black, for polarity recognition. When the booster cable is connected to two batteries, the positive poles are connected to each other and the negative poles are connected. Mistaking the correct polarity and connecting the color-coded fastener to the wrong pole is clearly possible and causes catastrophic damage, such as an explosion.

克服 In order to overcome the above-mentioned drawback, an object of the present invention is to provide a booster cable device for a vehicle battery that can prevent or reduce the drawback.

That is, an object of the present invention is to automatically detect the polarity relationship between two interconnected batteries and to appropriately switch the connection between the two batteries based on the detected polarity of each fastener. An object of the present invention is to provide a booster cable device for a vehicle battery.

A booster cable device according to the present invention is a booster cable device (1) for connecting first and second batteries having a positive electrode and a negative electrode,
A first pair of fasteners (a, b) connected to the positive and negative electrodes of the first battery such that each fastener has a different polarity. )When,
A second pair of fasteners (c, d) connected to the positive and negative electrodes of the second battery such that each fastener has a different polarity. )When,
A polarity detector (10) connected to each fastener to detect the polarity of each fastener (a, b, c, d);
A switching device (40) for connecting the first pair of fasteners and the second pair of fasteners,
A current sensing device (50) provided between the first pair of fasteners and the second pair of fasteners to sense a fastener removed from the battery, wherein the polarity detection A current detection device for providing a circuit continuity signal to the device;
The switching device is further connected to the polarity detection device via a driving device, and the first pair of fasteners and the second pair of fasteners are connected based on the polarity detected by the polarity detection device. Produce the correct connection between

Preferably, the booster cable device is further a power supply device (60) for supplying an operating voltage to the polarity detection device (10), wherein the first bridge rectifier (61) and the second bridge rectifier (62). And a power supply (60) comprising a Zener diode (63), wherein the first and second bridge rectifiers comprise the first pair of fasteners (a, b) and the second pair of fasteners. (C, d), wherein the Zener diode has a negative terminal, and may be connected to output terminals of the first and second bridge rectifiers.

The polarity detecting device (10) is a micro-processing device (10 ') having an input terminal connected to each of the fasteners (a, b, c, d) via a buffer device (20). Controlling the switching device (40) to cause the correct connection by the computer program of
The current detection device (50) is a blocking oscillator, the oscillation of the blocking oscillator being responsive to a current between the first and second batteries;
The blocking oscillator,
An oscillating transformer (51) having a primary winding and a secondary winding, wherein said primary winding comprises said first pair of fasteners (a, b) and said second pair of fasteners (c). , D), said secondary winding having a center tap connected to the emitter of a first transistor (Q1), the base of said first transistor being connected to said power supply (60). An oscillating transformer (51) connected;
A voltage driving circuit having three resistors (R1, R2, R3) connected in series between the power supply device and a ground, wherein a voltage driving circuit is provided between the first and second resistors (R1, R2). A voltage driving circuit having a first node (F) connected to the first transistor;
A second transistor (Q2) having a base connected to a second node (G) between the second and third resistors of the voltage driver circuit, wherein the collector of the second transistor is the second transistor (Q2); A second transistor (Q2) connected to the power supply device and the polarity detection device may be included.

The switching device (40) is a relay, and the relay includes:
A first switching terminal (C1) and a second switching terminal (C2) connected to the first pair of fasteners (a, b), respectively;
A first pair of output terminals (A1, B1) having a first main output terminal (A1) and a first sub output terminal (B1) selectively connected to the first switching terminal (C1); ,
A second pair of output terminals (A2, B2) having a second main output terminal (A2) and a second auxiliary output terminal (B2) selectively connected to the second switching terminal (C2); ,
A first coil (41) and a second coil (42) that are selectively excited by the driving device that controls the first switching terminal and the second switching terminal, respectively.
The first main output terminal and the second main output terminal are respectively connected to the second pair of fasteners (c, d), and the first sub output terminal is further connected to the second pair of fasteners. , The second main output terminal is connected to the second main output terminal, and the second sub output terminal is further connected to the first main output terminal,
The driving device may include a first switching transistor (31) and a second switching transistor (32) for respectively determining whether the first coil and the second coil are excited. .

Other features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings.

、 Referring to FIGS. 1 and 2, the adaptive booster cable type booster cable device 1 is connected between a first battery A and a second battery B. Each of the batteries A and B has a negative electrode and a positive electrode. The booster cable device 1 includes two pairs of fasteners 100 and 200 for clipping, such as clips, four cables (not numbered), a polarity detection device 10, a buffer device 20, and a drive device (numbered). (Not shown), a switching device 40, a current detection device 50, and a power supply device 60.

The first pair of fasteners 100 includes two fasteners a and b connected to the opposite poles of the first battery A, respectively. The second pair of fasteners 200 includes two fasteners c and d respectively connected to the opposite poles of the second battery B. Each cable has one end and the other end. The fasteners a, b, c, d are respectively connected to one end of the cable.

The polarity detection device 10 has four input terminals respectively connected to four fasteners a, b, c, and d via a buffer device 20 connected to the other ends of the four cables. The drive device includes a first switching transistor 31 and a second switching transistor 32, which are connected to two output terminals of the polarity detection device 10, respectively.

で は In the illustrated example, the switching device 40 is executed by a relay. The relay has two coils 41, 42 respectively connected to the two switching transistors. The first switching terminal C1 is mounted between a first pair of output terminals A1, B1 of the relay. Similarly, a second switching terminal C2 is mounted between a second pair of output terminals A2, B2 of the relay. Each coil 41, 42 controls the two switching terminals C1, C2 of the relay so as to simultaneously change the connection of the switching terminals between the two pairs of output terminals A1, B1, A2, B2. One terminal of each pair is a main output terminal A1, A2, and the other terminal of each pair is a sub-output terminal B1, B2. The two switching terminals C1 and C2 are connected to the two fasteners a and b of the first pair of fasteners 100, respectively. The main output terminals A1 and A2 are connected to two fasteners c and d of the second pair of fasteners 200, respectively. The sub-output terminals B1 and B2 are connected so as to intersect the main output terminals A2 and A1, respectively, which are pairs of output terminals, that is, in a cross-connect state.

To determine which of the fasteners a, b, c, d have been removed from any of the first and second batteries A, B, the current detection device 50 may be connected to the first pair of batteries via the switching device 40. A fastener 100 is coupled between the fastener 100 and a second pair of fasteners 200. The current detector 50 further outputs a circuit continuity signal to the polarity detector 10 based on the sensed current gaze.

The power supply device 60 is connected to the two pairs of fasteners 100 and 200, the polarity detection device 10, and the two coils 41 and 42. After the first pair of fasteners 100 or the second pair of fasteners 200 are attached to the corresponding batteries A, B, the power supply 60 immediately supplies the operating voltage to operate the polarity detection device 10. I do. At the same time, the current from the power supply device 60 flows through one of the two coils 41, 42 based on the on / off state of the two switching transistors 31, 32.

に Referring to Table 1 below, it can be seen that the on / off state of the two switching transistors 31, 32 is determined by the polarity of each attached fastener a, b, c, d. In Table 1, the case where the fastener is connected to the positive electrode of the battery is indicated by +, and the case where the fastener is connected to the negative electrode is indicated by-.

First, one of the two pairs of fasteners 100, 200, for example, the fasteners a, b of the first pair of fasteners 100, corresponds to the corresponding battery A, B (in the illustrated example, the first battery A). When mounted on the two poles, the power supply 60 immediately outputs an operating voltage to activate the polarity detection device 10. The two switching transistors 31 and 32 are still off. Therefore, the two switching terminals C1 and C2 of the relay remain at the intermediate position, and do not contact any of the main output terminals A1 and A2 and the sub output terminals B1 and B2.

When the fasteners c, d of the second pair of fasteners 200 are attached to the two poles of the second battery B, the polarity detection device 10 detects the polarity of each fastener a, b, c. And outputs a control signal to operate one of the switching transistors 31 and 32 based on the relationship shown in Table 1.

関係 The relationship between the switching transistors 31 and 32 and the polarities of the fasteners a, b, c and d shown in Table 1 can be divided into one type of type I and type II.

In the case of Type 1, the fasteners a and b of the first pair of fasteners 100 have the same polarity as the fasteners c and d of the third pair of fasteners 200, respectively.

に Referring to FIG. 3 and Table 1, when the polarity detection device 10 detects that the type I condition exists, only the first switching transistor 31 is activated. Therefore, current i from power supply device 60 flows through first coil 41. When the first coil 41 is excited by a current and generates a magnetic induction force, the two switching terminals C1 and C2 are simultaneously switched so as to contact the main output terminals A1 and A2. Thereby, the fasteners a and b of the first pair of fasteners 100 are connected to the fasteners c and c of the second pair of fasteners 200 so as to continue the transmission force between the batteries A and B, for example, the boosting process. d is connected correctly.

In the case of Type II, the polarity of the fasteners a and b of the first pair of fasteners 100 is the same as the polarity of the fasteners c and d of the second pair of fasteners 200, respectively.

Referring to FIG. 4 and Table 1, when the polarity detection device 10 detects that the polarity of the fastener a is not the same as the polarity of the fastener c (columns 4 and 5 in Table 1), the second switching transistor Only 32 operates. Therefore, the current from the power supply device 60 flows through the second coil 42. Similarly, when the second coil 42 is excited by a current and generates a magnetic inductive force, the two switching terminals C1 and C2 are simultaneously switched so as to contact the sub-output terminals B1 and B2. However, since the sub output terminals B1, B2 are connected so as to cross the main output terminals A2, A1, the fasteners a, b of the first pair of fasteners 100 are still connected to the second pair of fasteners. It is correctly connected to the fasteners d and c of the tool 200, respectively.

During power transfer in either Type I or Type II configurations, the current sensing device 50 monitors the power transfer circuit to determine which fasteners a, b, c, d have been removed from the battery. Regardless of which fastener is removed from the battery, the battery charging path between the two batteries is immediately interrupted. Therefore, the current detection device 50 outputs a continuity signal of the circuit to the polarity detection device 10 to deactivate the switching transistors 31 and 32. Since the two switching transistors 31, 32 are not conducting, no current flows through the first coil 41 or the second coil 42 so that the two switching terminals C1, C2 are switched back to the intermediate position.

極性 Referring to FIG. 5, the polarity detection device 10 is executed by a micro processing device 10 ′. The relationships shown in Table 1 are performed by a computer program stored in the microprocessor 10 '. When the microprocessor 10 'detects the polarity of each fastener, the microprocessor 10' determines which of the switching transistors 31, 32 is activated based on a computer program. Further, the buffer device 20 includes four transistors 21, 22, 23 and 24.

The power supply device 60 includes two bridge rectifiers 61 and 62 and a Zener diode 63. The bridge rectifiers 61 and 62 are respectively coupled to the first and second batteries A and B, and the zener diode 63 includes two bridge rectifiers 61 used as constant voltage sources, in the illustrated example, 5 V constant voltage sources. It has a negative terminal connected to 62 output terminals. A constant voltage of 5 volts is supplied to the microprocessor 10 'as an operating voltage.

The current detection device 50 includes a blocking oscillator in the illustrated example. The blocking oscillator includes an oscillating transformer 51 having a primary winding and a secondary winding, resistors R1, R2, R3, R4, R5, and transistors Q1, Q2 having an emitter, a collector, and a base. The primary winding is connected between the second fastener b of the first pair of fasteners 100 and the switching terminal C2. The central electrical tap (hereinafter referred to as “center tap”) of the secondary winding is connected to the emitter of the transistor Q1. The base of the transistor Q1 is connected to a Zener diode 63 via a resistor R4.

(3) The three resistors R1, R2, and R3 connected in series form a voltage driving circuit between the negative terminal of the Zener diode 63 and the ground. The node "F" between the first two resistors R1 and R2 is further connected to the collector of transistor Q1.

ベ ー ス The base of the transistor Q1 is connected to the node “G” between the second two resistors R2 and R3. The collector of the transistor Q2 is connected via a resistor R5 to the microprocessor 10 'and to the negative terminal of the Zener diode 63.

When there is no power transmission between the two batteries A and B, no current flows through the primary winding of the oscillating transformer 51 (for example, i = 0). The blocking oscillator is kept oscillating, and transistor Q1 is turned on. The current from Zener diode 63 flows to ground via resistor R1 and transistor Q1, the voltage level at node "F" is low, and transistor Q2 is inactive. Microprocessor 10 'receives the high voltage level signal from the collector because transistor Q2 is not operating and the collector is connected to microprocessor 10' and zener diode 63.

On the other hand, when power is transmitted between the two batteries A and B and the current flows through the primary winding, the core of the oscillating transformer saturates and oscillation stops. When oscillation stops, the voltage level at node "F" rises to a high level and transistor Q2 is turned on. As transistor Q2 is activated, microprocessor 10 'receives a constant voltage level signal from the collector. Thus, based on the voltage level from the collector of transistor Q2, microprocessor 10 'can determine whether the power transfer path between the two batteries A, B has been interrupted.

The booster cable device according to the present invention can automatically detect the polarities of two interconnected batteries and generate a correct circuit path between the batteries. Thus, one does not need to determine the polarity of the two batteries before the batteries are boosted. Furthermore, because the two batteries are automatically and correctly interconnected, any possible disturbance to the user caused by the incorrect polarity connection is avoided and prevented.

Simple modifications and alterations of the present invention can be easily implemented by those having ordinary skill in the art, and all such modifications and alterations are included in the scope of the present invention.

1 is a perspective view of a booster cable device according to the present invention. FIG. 2 is a functional circuit block diagram of the booster cable device according to the present invention. FIG. 2 is a first operable functional circuit block diagram of the booster cable device shown in FIG. 1 when the polarity of the fastener a and the polarity of the fastener c are the same (when the type is I). FIG. 2 is a block diagram of a second operable functional circuit of the booster cable device shown in FIG. 1 when the polarity of the fastener a and the polarity of the fastener d are the same (when type II). The detailed circuit block diagram of the booster cable apparatus shown in FIG.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Booster cable device 10 Polarity detection device 10 'Microprocessing device 20 Buffer device 21, 22, 23, 24, Q1, Q2 Transistor 31, 32 Switching transistor 40 Switching device 41, 42 Coil 50 Current detection device 51 Oscillation transformer 60 Power supply Device 61, 62 Bridge rectifier 63 Zener diode 100, 200 Pair of fasteners A, B Battery A1, A2, B1, B2 Output terminal C1, C2 Switching terminal R1, R2, R3, R4, R5 Resistors a, b, c , D fastener

Claims (4)

A booster cable device (1) for connecting first and second batteries having a positive electrode and a negative electrode,
A first pair of fasteners (a, b) connected to the positive and negative electrodes of the first battery such that each fastener has a different polarity. )When,
A second pair of fasteners (c, d) connected to the positive and negative electrodes of the second battery such that each fastener has a different polarity. )When,
A polarity detector (10) connected to each fastener to detect the polarity of each fastener (a, b, c, d);
A switching device (40) for connecting the first pair of fasteners and the second pair of fasteners,
A current sensing device (50) provided between the first pair of fasteners and the second pair of fasteners to sense a fastener removed from the battery, wherein the polarity detection A current detection device for providing a circuit continuity signal to the device;
The switching device is further connected to the polarity detection device via a driving device, and the first pair of fasteners and the second pair of fasteners are connected based on the polarity detected by the polarity detection device. A booster cable device that produces the correct connection between. Furthermore, a power supply device (60) for supplying an operating voltage to the polarity detection device (10), comprising a first bridge rectifier (61), a second bridge rectifier (62), a zener diode (63), Wherein the first and second bridge rectifiers are respectively connected to the first pair of fasteners (a, b) and the second pair of fasteners (c, d). The booster cable device according to claim 1, wherein the Zener diode has a negative terminal and is connected to output terminals of the first and second bridge rectifiers. The polarity detecting device (10) is a micro-processing device (10 ') having an input terminal connected to each of the fasteners (a, b, c, d) via a buffer device (20). Controlling the switching device (40) to cause the correct connection by the computer program of
The current detection device (50) is a blocking oscillator, the oscillation of the blocking oscillator being responsive to a current between the first and second batteries;
The blocking oscillator,
An oscillating transformer (51) having a primary winding and a secondary winding, wherein said primary winding comprises said first pair of fasteners (a, b) and said second pair of fasteners (c). , D), said secondary winding having a center tap connected to the emitter of a first transistor (Q1), the base of said first transistor being connected to said power supply (60). An oscillating transformer (51) connected;
A voltage driving circuit having three resistors (R1, R2, R3) connected in series between the power supply device and a ground, wherein a voltage driving circuit is provided between the first and second resistors (R1, R2). A voltage driving circuit having a first node (F) connected to the first transistor;
A second transistor (Q2) having a base connected to a second node (G) between the second and third resistors of the voltage driver circuit, wherein the collector of the second transistor is the second transistor (Q2); The booster cable device according to claim 1, further comprising a second transistor (Q2) connected to a power supply and the polarity detector. The switching device (40) is a relay, and the relay includes:
A first switching terminal (C1) and a second switching terminal (C2) connected to the first pair of fasteners (a, b), respectively;
A first pair of output terminals (A1, B1) having a first main output terminal (A1) and a first sub output terminal (B1) selectively connected to the first switching terminal (C1); ,
A second pair of output terminals (A2, B2) having a second main output terminal (A2) and a second auxiliary output terminal (B2) selectively connected to the second switching terminal (C2); ,
A first coil (41) and a second coil (42) that are selectively excited by the driving device that controls the first switching terminal and the second switching terminal, respectively.
The first main output terminal and the second main output terminal are respectively connected to the second pair of fasteners (c, d), and the first sub output terminal is further connected to the second pair of fasteners (c, d). , The second main output terminal is connected to the second main output terminal, and the second sub output terminal is further connected to the first main output terminal,
The drive device includes a first switching transistor (31) and a second switching transistor (32) for respectively determining whether the first coil and the second coil are energized. 2. The booster cable device according to 1.

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