JP2006322857A - Storage battery impedance measuring method and tool for storage battery impedance measurement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage battery impedance measuring method accurately measuring the impedance of a storage battery by an AC current without being affected by electromagnetic induction or an induced voltage, and to provide a tool for the measurement. <P>SOLUTION: In this method, a current application line 2 passing a measuring current for measuring the impedance of the storage battery 1, and a voltage measuring line 3 for detecting the voltage of the battery are connected to terminals of the storage battery to measure the impedance of the storage battery. Impedance is measured on the storage battery, with a plus-side measuring line and a plus-side application line connected to a plus terminal 11 of the storage battery disposed on a surface, with the terminals of the storage battery disposed thereon along different sides of the storage battery while disposing a minus-side measuring line and a minus-side application line connected to a minus terminal 12 of the storage battery on the surface of the storage battery so that they are disposed along different sides of the storage battery surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a storage battery impedance measurement method and a measurement jig thereof, and more particularly to an impedance measurement method suitable for measuring the internal resistance of a storage battery using an alternating current impedance measurement method and a measurement jig thereof.

When measuring the internal resistance of the storage battery, the coupling degree of inductive coupling is reduced by twisting the plus (+) side electric wire and the minus (−) side electric wire to obtain a shielding effect.
However, in order to connect the measuring wire to the storage battery, the + and-terminals of the storage battery are installed at positions left and right (or back and forth). (Patent Document 1).
JP 2002-117226 A

When the measurement wire is untwisted and connected to the left and right terminals, for example, as shown in FIG. 7, if the application line 2 for applying the measurement current to the storage battery 1 and the measurement line 3 for measuring the storage battery voltage intersect, The magnetic flux generated by the current may be coupled to the measurement line 3 to induce an induced voltage 90 ° out of phase with respect to the measurement current in the measurement line 3 and cause an error in the measurement result.
In the measurement, the case where the intersection of the application line 2 and the measurement line 3 affects the measurement result has been described. However, when the application line 2 and the measurement line 3 are arranged in parallel for a certain length or more as shown in FIG. In addition, the measurement results may be affected by electromagnetic induction.

  The present invention provides a storage battery impedance measurement method capable of accurately measuring the impedance of a storage battery by an alternating current without being affected by induced voltage and electromagnetic induction, and is used when measuring the impedance of the storage battery. An object of the present invention is to provide a measuring jig capable of accurately measuring impedance.

  In order to solve such problems, the storage battery impedance measurement method according to the first aspect of the present invention includes a current application line for passing a measurement current for measuring the storage battery impedance, and a voltage for detecting the battery voltage. In the method of measuring the impedance of a storage battery by connecting the measurement line to the terminal of the storage battery, the + side measurement line connected to the + terminal of the storage battery is different from the + side application line on the surface where the storage battery terminal is arranged. Arrange on the surface of the storage battery along the side, connect the -side measurement line connected to the -terminal of the storage battery and the -side applied line on the surface of the storage battery along different sides of the storage battery surface, and measure the impedance of the storage battery .

  The method for measuring impedance of a storage battery according to the second aspect of the present invention includes a + side insulation closure and a −side insulation closure on the + terminal side and the −terminal side, respectively, The positive side measurement line and the positive side application line connected to the positive terminal of the storage battery are attached to the positive side insulating closure body so that the positive side measurement line and the positive side application line are opposite to each other. This is a measurement method for measuring the impedance of the storage battery by attaching the negative side measurement line and the negative side application line to be connected in the opposite direction.

  It is preferable that the distance between the measurement line and the application line in a parallel arrangement is 1/2 or more, preferably 1/2 to 3/5 of the distance between the + terminal and the − terminal.

  A storage battery impedance measurement jig according to a third aspect of the present invention is a jig for measuring impedance by installing + −both terminals on the surface of a storage battery arranged on the left and right, and a + terminal on the surface of the storage battery. The + side insulation closure body is arranged on the side and the − terminal side, respectively. The + side insulation closure body includes a + side measurement line and a + side application line connected to the + terminal of the storage battery. Both are attached in the opposite direction, and the -side insulation closure is attached so that the -side measurement line and -side application line connected to the -terminal of the storage battery are in the opposite direction. It is a jig for measuring the impedance of a storage battery.

The impedance measuring method of the present invention can accurately measure the impedance of a storage battery by an alternating current without being affected by induced voltage and electromagnetic induction.
Moreover, the measuring jig of the present invention is used when measuring the impedance of the storage battery, and can accurately measure the impedance of the storage battery.

The present invention will be described with reference to the illustrated embodiments.
FIG. 1 shows a first embodiment of the present invention. The method for measuring the impedance of the storage battery 1 shown in FIG. 1 detects a current application line 2 for passing a measurement current for measuring the impedance of the storage battery 1 and the voltage of the battery. The present invention relates to a method of measuring the impedance of the storage battery by alternating current by connecting the voltage measuring line 3 to the terminal of the storage battery.

  In the present embodiment, the current application line 2 is an electric wire in which two strands are twisted together, and its terminal portion is untwisted longer than the distance between the distance between the + terminal 11 and the − terminal 12 of the storage battery 1 and The wires are separated, one terminal is connected to the + terminal 11 of the storage battery 1 and the other terminal is connected to the − terminal 12, and an alternating current for measuring the impedance of the storage battery is energized. As shown in FIG. 1, the untwisted two strands 21 and 22 are wired along the vertical sides 14 and 15 of the surface on which the terminals of the storage battery 1 are provided, and an insulating tape (for example, an insulating adhesive tape) 4) fixed to the surface of the storage battery 1 at 4.

The voltage measurement line 3 for impedance measurement is an electric wire in which two strands are twisted together, and the end portion of the voltage measurement line 3 is twisted by a length approximately equal to half the distance between the + terminal 11 and the − terminal 12 of the storage battery 1. It is unraveled and separated into two wires, and one terminal is connected to the + terminal 11 of the storage battery 1 and the other terminal is connected to the − terminal 12 to measure the impedance of the storage battery. As shown in FIG. 1, the two untwisted strands 31 and 32 are arranged on the left and right sides along the side 16 on the surface of the storage battery 1, and the insulating tape (for example, insulating adhesive tape) 4 is used to It is fixed. At each terminal, the strands 21 and 22 of the current application line and the strands 31 and 32 of the voltage measurement line are positioned at an angle of 90 degrees.
In addition, since the temperature of the storage battery 1 rises during the impedance measurement and the insulating tape 4 may be thermally deteriorated, it is preferable to use a heat-resistant tape.
After wiring is completed as described above, a measurement alternating current is applied to the storage battery 1 from a measurement current source (not shown), and an impedance generated by the applied current is measured with a voltmeter (not shown) connected to the measurement line 3.

  As shown in FIG. 1, in the present embodiment, there is a portion where the strand 21 of the application line 2 and the strand 31 of the measurement line 3 are arranged in parallel. If the distance between the parallel parts is too short, the influence of electromagnetic induction occurs. FIG. 4 is an example in which the strand 21 of the application line 2 is arranged away from the side of the storage battery 1 and the portion where the strand 31 of the measurement line 3 is arranged in parallel is close. In this way, if the distance between the portions where the strand 21 of the application line 2 and the strand 31 of the measurement line 3 are arranged in parallel is too close, the influence of electromagnetic induction appears and an error occurs in the impedance measurement result. In this embodiment, the distance between the measurement line and the application line arranged in parallel is ½ or more of the distance between the + terminal 11 and the − terminal 12, preferably 1/2 to 3/5. did. By setting the distance of the portion where the measurement line and the application line are arranged in parallel to be ½ or more of the distance between the + terminal 11 and the − terminal 12, the influence on the measurement value due to electromagnetic induction from the application line Therefore, accurate measurement values can be obtained.

  In the present embodiment, on the surface on which the terminal of the storage battery 1 is arranged, the strand 21 of the + side application line and the strand 31 of the + side measurement line connected to the + terminal 11 of the storage battery 1 are along different sides of the storage battery. By arranging the wire 22 of the negative side application line and the strand 32 of the negative side measurement line connected to the negative terminal 12 of the storage battery along different sides of the storage battery 1, 21 and the element wire 31 of the measurement line 3 are the distance between the + terminal and the − terminal, and the distance between the application wire element 22 and the measurement element element wire 32 does not intersect with each other and is parallel. The impedance of the storage battery is measured as 1/2 or more. For this reason, an error due to the induced voltage and the induced voltage does not occur between the measurement line 3 and the application line 2, and the impedance can be measured more accurately.

FIG. 2 shows a second embodiment of the present invention, and the same reference numerals are given to the parts common to FIG.
In the embodiment shown in FIG. 2, insulating closures 5 and 6 are provided on the surface of the storage battery 1. The insulation block 5 is wired with the + side strand 21 of the application line 2 connected to the + terminal 11 and the + side strand 31 of the measurement line 3 wound in opposite directions, and both terminals are connected to the + terminal 11. It is connected to the.
On the other hand, a negative side wire 22 of the application wire 2 connected to the negative terminal 12 and a negative side wire 32 of the measuring wire 3 are wound in the opposite direction on the insulating closing body 6 and wired. 12 is connected.

The insulation blockers 5 and 6 are installed on the surface of the storage battery 1 as shown in FIG. Since the material of the insulating plugs 5 and 6 may generate acid gas during the impedance measurement of the storage battery 1, it is preferably made of an acid resistant and heat resistant material as described above.
In order to wrap the application wire 2 around the insulation blockers 5 and 6, the twist of the terminal portion of the application wire 2 is unraveled longer than the distance between the + terminal 11 and the −terminal 12 of the storage battery and separated into two strands, One strand is wound clockwise around the insulating closure 5 and the other strand is wound around the insulation closure 6 in the counterclockwise direction.
In order to wrap the measuring wire 3 around the insulation blockers 5 and 6, the twist of the terminal portion of the measuring wire 3 is unraveled slightly longer than half of the length of the distance between the positive terminal 11 and the negative terminal 12 of the storage battery. The wires are separated, and one strand is wound around the insulating closure 5 in the counterclockwise direction, and the other strand is wound around the insulation closure 6 in the clockwise direction.

In the second embodiment, the insulation blockers 5 and 6 are circular having a large diameter such that the circumference reaches the side of the storage battery 1, and the measurement line 3 is about 1/3 to 1/4 of the circumference. Is wound with a length of about ½, and the ends of the lines are connected to the respective terminals. In addition, when winding the strands 21, 22, 31, and 32 on the insulating blockers 5 and 6, respectively, the measurement results become more accurate if they are entangled so that the left and right shapes are almost symmetrical.
In Embodiment 2, the application line 2 and the measurement line 3 are wound around the insulation blockers 5 and 6 to prevent the lines from intersecting or paralleling. There is a case. In such a case, if the distance between the two is close, electromagnetic induction due to the voltage of the applied line 2 affects the measurement line 3, so the distance between the parallel (possibly feared) portions is set to + terminal 11 and −terminal 12. It is designed to be at least 1/2 of the distance between. By designing in this way and measuring the impedance of the storage battery 1, no electromagnetic induction or induced voltage is generated between the measurement line 3 and the application line 2, and the impedance can be measured accurately.

  FIG. 3 shows a third embodiment of the present invention. The only difference from FIG. 2 is that the insulating closures 5 and 6 are large squares along the side of the storage battery 1. By making the insulation blocker square, it is only necessary to unwind the measuring wire 3 to be slightly longer than the length between the terminals, and the influence of electromagnetic induction and induced voltage is less susceptible to the embodiment shown in FIG. .

  In the third embodiment, as in the first embodiment shown in FIG. 1, there is a portion where the application line 2 and the measurement line 3 are arranged in parallel, and this distance is set between the + terminal 11 and the − terminal 12. When the distance between them is at least 1/2, preferably about 1/2 to 3/5, the influence of the induced voltage from the applied line 2 on the measurement value is eliminated, and an accurate measurement value can be obtained.

  5 and 6 show comparative examples for the second and third embodiments. In FIG. 5, the diameters of the insulating closures 5 and 6 are shorter than those of the second embodiment, and the circumference is far from the side of the storage battery 1. This is an example in which the distance of the part parallel to the measurement line 3 is ½ or less of the distance between the + terminal 11 and the − terminal 12, and FIG. 6 is smaller in the quadrangle than the third embodiment. The interval between the portions where the application line 2 and the measurement line 3 of the insulating blockers 5 and 6 are parallel is short, and the interval between the portion where the measurement line and the application line are parallel is between the + terminal 11 and the − terminal 12. In this example, the impedance measurement result includes an error.

  In the second and third embodiments, the state in which the application line 2 and the measurement line 3 are attached to the insulating plugs 5 and 6 corresponds to the embodiment of the impedance measurement jig of the present invention.

As described in detail above with reference to the embodiments of the present invention, the present invention provides a storage battery impedance measurement method capable of accurately measuring the impedance of a storage battery by an AC current without being affected by electromagnetic induction or induced voltage. Can do.
Moreover, it can be used when measuring the impedance of a storage battery, and the measuring jig which can measure the impedance of a storage battery correctly can be provided.

FIG. 1 is a front view showing a first embodiment of the present invention. FIG. 2 is a front view showing a second embodiment of the present invention. FIG. 3 is a front view showing a third embodiment of the present invention. FIG. 4 is a front view showing a comparative example with respect to the first embodiment. FIG. 5 is a front view showing a comparative example with respect to the second embodiment. FIG. 6 is a front view showing a comparative example with respect to the third embodiment. FIG. 7 is a schematic diagram for explaining a wiring situation for measuring the impedance of the storage battery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage battery 11 + terminal 12-terminal 2 Application line 21 Application line element wire 22 Application line element wire 3 Measurement line 31 Measurement line element wire 32 Measurement line element wire 4 Insulation tape 5 Insulation closure body 6 Insulation closure body

Claims (4)

  In a method of measuring the impedance of a storage battery by connecting a current application line for passing a measurement current for measuring the impedance of the storage battery and a voltage measurement line for detecting the voltage of the battery to the terminal of the storage battery, the terminal of the storage battery is arranged. On the surface, the + side measurement line and + side application line connected to the + terminal of the storage battery are arranged along different sides of the storage battery, and the − side measurement line and − side application line connected to the − terminal of the storage battery are stored in the storage battery. An impedance measurement method for a storage battery that is arranged along different sides of the surface and measures the impedance of the storage battery.   On the surface of the storage battery in which both terminals are arranged on the left and right sides, a + side insulation closure body and a − side insulation closure body are arranged on the + terminal side and the − terminal side, respectively. Install so that the + side measurement line connected to the + terminal and the + side application line are in the opposite direction, and the-side measurement line and the-side application line connected to the-terminal of the storage battery are opposite to the-side insulation block. A method for measuring the impedance of a storage battery, wherein the impedance of the storage battery is measured by being mounted around the storage battery.   The impedance measurement of the storage battery according to claim 1 or 2, wherein a distance of a portion where the measurement line and the application line are arranged in parallel is 1/2 to 3/5 of a distance between the + terminal and the-terminal. Method. + −A jig for measuring impedance by installing both terminals on the surface of a storage battery arranged on the left and right sides, and a + side insulation blocker disposed on the + terminal side and the −terminal side of the surface of the storage battery, and − The + side insulation block is attached to the + side insulation block so that the + side measurement line and the + side application line connected to the + terminal of the storage battery are in opposite directions. The storage battery impedance measuring jig for measuring the impedance of the storage battery, wherein the -side measurement line and the -side application line connected to the -terminal of the storage battery are attached in opposite directions.