JPH1118305A - Charging and discharging equipment for battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To objectively and quickly judge the state of performance of a charging and discharging equipment, and effectively reduce the manhours for charging and discharging, by installing a self-judging means diagnosing performance in a charging and discharging means before charging and discharging of a battery by using the charging and discharging means. SOLUTION: Before charging and discharging of a battery by using a charging and discharging means 80, a resistor 140 and a constant current circuit 92 are connected through a first switch circuit 142, and the resistor 140 and a voltage measuring circuit 94 are connected through a second switch circuit 144. When a constant current is made to flow from a constant current circuit 86 to the resistor 140 through the first switch circuit 142, a voltage corresponding to its voltage drop appears on both ends of the resistor 140. The voltage is detected with the voltage measuring circuit 94. Whether a supplied voltage is in a specified range or not is judged in a judging means 162, and the result is sent to a control unit 164. According to the result of judgement, charging by the charging and discharging means 80 is performed or stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a charge / discharge facility for a rechargeable secondary battery such as a Ni-Cd battery or a lithium battery.

[0002]

2. Description of the Related Art For example, in a secondary battery of a cylindrical battery such as a Ni-Cd battery or a lithium battery, a positive electrode plate and a negative electrode plate provided with current collecting leads are wound around a separator. The electrode group is inserted into a cylindrical case.

[0003] In these secondary batteries, the voltage across the battery and the current flowing through the battery during charge / discharge operation of the battery, that is, charge / discharge characteristics, are important monitoring parameters. As a method of measuring the charging / discharging characteristics, for example, charging is performed for a predetermined period from the start of the measurement, a current waveform and a voltage waveform during the charging are plotted, and then, a discharging is performed, and a current waveform and a voltage waveform during the plotting are plotted. There are known ways to do this.

[0004]

When a battery is subjected to charge / discharge processing, the performance of the charge / discharge processing apparatus itself may be deteriorated due to aging or the like. this is,
It often accompanies the deterioration with time of various circuit components constituting the charge / discharge processing apparatus.

However, in actual charge / discharge processing, it is difficult to objectively and quickly determine the deterioration of the performance of the charge / discharge processing apparatus as a practical problem. In addition, the performance degradation of the charge / discharge processing apparatus is indirectly searched for based on the unexpectedness and the variation of the measurement result.

In the case of this method, after the charging / discharging process for the battery is completely completed, the measurement result is statistically obtained.
Since the performance deterioration of the charge / discharge processing device is determined, it is necessary to perform substantially useless charge / discharge processing for the performance deterioration determination, which may lead to an increase in the number of steps of the battery charge / discharge processing process. There is.

The present invention has been made in view of such problems, and objectively measures the performance state of the charge / discharge processing apparatus.
Further, it is an object of the present invention to provide a battery charge / discharge facility capable of promptly determining and efficiently reducing the number of steps of the charge / discharge process.

[0008]

According to a first aspect of the present invention, there is provided a battery charging / discharging facility having at least a constant current circuit and a voltage measuring circuit, and performing a charging / discharging process on the battery. Prior to the charging / discharging processing on the battery by the charging / discharging processing means, a self-diagnosing means for diagnosing the performance in the charging / discharging processing means is provided.

As a result, the battery is normally charged / discharged through the charge / discharge processing means. In the present invention, prior to the charge / discharge processing, the performance in the charge / discharge processing means is checked by the self-diagnosis means. Diagnosed. When the diagnosis result is a positive result, the charging / discharging process of the battery is performed by the charging / discharging processing unit. When the diagnosis result is a negative result, the charging / discharging process by the charging / discharging processing unit is stopped. You.

As described above, in the battery charging / discharging equipment according to the present invention, the performance state of the charging / discharging processing apparatus can be objectively and quickly determined through the self-diagnosis means. Can be efficiently reduced.

[0011] As the self-diagnosis means, a first resistor is provided corresponding to the battery, and one of the battery and the resistor is selectively connected to the constant current circuit.
A switching circuit for selectively connecting one of the battery and the resistor to the voltage measuring circuit; and a second switching circuit for generating a voltage at both ends of the resistor by energizing the resistor by the constant current circuit. A voltage to be detected through the voltage measurement circuit, and a determination unit that determines whether the detection level is within a predetermined range. If the determination result by the determination unit is a positive determination, the charge / discharge processing unit A control unit may be provided for causing the charging / discharging process to be performed and stopping the charging / discharging process by the charging / discharging processing unit when the determination result is a negative determination (the invention according to claim 2).

Thus, prior to the charging / discharging processing of the battery by the charging / discharging processing means, the resistor and the constant current circuit are connected by the first switching circuit, and the resistor and the voltage measurement are performed by the second switching circuit. The circuit is connected.

When a constant current flows from the constant current circuit to the resistor through the first switching circuit, a voltage corresponding to the voltage drop appears at both ends of the resistor. This voltage between both ends is detected by the voltage measurement circuit through the second switching circuit. The detected voltage is sent to the determination means. The determining means determines whether the supplied voltage is within a predetermined range. The result of this determination is sent to the control unit. The control unit, when the determination result indicates a positive result, the charging / discharging processing unit performs the charging / discharging process of the battery by the charging / discharging processing unit as not deteriorating in performance, and the determination result indicates a negative result. In this case, the charging / discharging processing means stops the charging / discharging processing of the battery by the charging / discharging processing means as having deteriorated performance.

In this case, since the self-diagnosis means for diagnosing the performance in the charge / discharge processing means can be configured with a simple configuration, the reliability of the battery charge / discharge processing can be further improved.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A battery charging / discharging facility according to the present invention will be described below as a charging / discharging facility for a cylindrical secondary battery (hereinafter simply referred to as a battery) such as a Ni-Cd battery or a lithium battery. Embodiments to which the present invention is applied (hereinafter simply referred to as charging / discharging equipment according to the embodiment) will be described with reference to FIGS. 1 to 6. The configuration of a battery to be processed and the configuration of a container capable of accommodating a plurality of the batteries will be described.

First, as shown in FIG. 1, a battery 10 includes a battery can 12 having a bottomed cylindrical shape, and an electrode plate group 16 enclosed in the battery can 12 together with a non-aqueous electrolyte 14 containing a lithium salt. And a sealing body 18.

The electrode group 16 includes a positive electrode plate 20 having a layer mainly composed of a lithium-containing metal oxide, a mixture layer mainly composed of a negative electrode material, and a metal material mainly composed of lithium superposed on the mixture layer. The formed negative electrode plate 22 is wound around a separator 24, and a positive electrode lead 26 is provided at an end of the positive electrode plate 20, and a negative electrode lead 28 is provided at an end of the negative electrode plate 22. .

The positive electrode lead 26 extends from the winding center of the electrode group 16 toward the opening 12a of the battery can 12, and
It is welded to the sealing body 18. The sealing body 18 is fixed to an end of the battery can 12 on the side of the opening 12 a via a gasket 30. The negative electrode lead 28 extends from the outer peripheral side of the electrode plate group 16 toward the inner bottom portion 12b of the battery can 12, and is welded to the inner bottom portion 12b.

An annular groove 32 is formed in the battery can 12 near the opening 12a. In the battery can 12, a lower insulating plate 34 and an upper insulating plate 36 are provided for the electrode group 16.

A plurality of the batteries 10 are arranged and accommodated in one container 40 (see FIG. 2). This container 40 has a substantially square planar shape (for example, about 560 mm on a side) and has four side walls (for example, about 1 mm in height).
00 mm) A box-shaped box body 44 having 42A to 42D.
Having. The bottom portion 46 of the box body 44 has 16
16 through holes, a total of 256 through holes 48 (FIG. 3A).
And FIG. 3B) are arranged in a matrix.

A holder 50 for holding the battery 10 is formed integrally with each of the through holes 48.

As shown in FIG. 3B, the holder 50 has a corresponding through hole 48 having a bottom opening (for example, a circular opening having a diameter of about 15 mm) and an opening at the top (for example, having a diameter of about 21 mm).
(For example, a height of about 28)
mm) 54, and the cylindrical portion 54 has
A plurality of (six in the illustrated example) rib portions 56 extending in the height direction and having a small width d (for example, about 3 mm) and projecting in the axial direction of the cylindrical portion 54 are integrally formed on the inner wall thereof. Is formed.

Each of the ribs 56 is formed at its upper end with a tapered surface 58 inclined downward in the axial direction. In addition, each rib portion 56 has a step at an arbitrary position in the height direction. For example, in the example of FIG. 3B, a position approximately 1 mm above the bottom portion 46 of the casing 44 and approximately A step (hereinafter, referred to as a lower step 60a and an upper step 60b for convenience) is formed at a position 10 mm above. The inner wall surface of the portion 54 is, for example, about 1.4 mm, and the protrusion width d2 of the protrusion (center protrusion 56b) below the upper step 60b is the cylindrical portion 5.
For example, the protrusion width d1 of the protrusion (lower protrusion 56c) below the lower step 60a is about 2.25 mm from the inner wall surface of the inner wall 4 (the protrusion width from the end face of the upper protrusion 56a). For example, about 4.5 mm from the inner wall surface (protruding width from the end face of the central protruding portion 56b is about 2.25 mm)
It has been.

Thus, a circular opening having a diameter of 12 mm is formed by connecting the respective end surfaces of the lower overhang portion 56c, and a circular opening having a diameter of 16.5 mm is formed by connecting the respective end surfaces of the central overhang portion 56b. By connecting the end faces of the upper overhang portion 56a, the diameter is 18.
A 2 mm circular opening will be formed.

Therefore, the lower step 60a has an outer diameter of 12
A cylindrical battery having a diameter greater than 16.5 mm and less than 18.2 mm can be placed on the upper step 60b.
That is, the holder 50 can hold, for example, two types of batteries 10 having different outer diameters.

On the other hand, the housing body 44 has a flange portion 62 integrally formed on the upper portion thereof. Of the corner portions C1 to C4 of the flange portion 62, three corner portions C1, C
3 and C4 are formed in a curved shape having the same curvature,
The remaining corner portion C2 is chamfered in an oblique direction, and the tapered surface 6 orthogonal to the diagonal line of the bottom portion 46 of the box body 44 is formed.
4 is formed.

The flange portion 62 has a rectangular annular step 66 formed inside thereof, and the shape defined by the step 66 is substantially the same as or slightly larger than the bottom outer shape of the housing 44. . Therefore, when placing another container 40 on one container 40, the container 40
Is inserted into the step 66 of the flange portion 62 of the container 40 located below, so that a plurality of containers 40 can be stably stacked.

Further, a plurality of openings 68 are formed in each of the side walls 42A to 42D of the box body 44. In particular, among the outer surfaces of the side walls 42C constituting the sides that are in contact with the corners C4,
A card storage unit 70 in which a data storage card (data card) DC can be detachably attached is formed in a portion close to the corner C4.

In a storage unit (IC chip or magnetic recording surface) built in the data card DC, a result of an inspection process, for example, a charge / discharge process for 250 batteries is stored in, for example, coordinate information or bit information (0/1). = GO / NG).

The container 40 is integrally formed of a self-extinguishing, self-flame-retardant material.
For example, ABS (acrylonitrile-butadiene-styrene copolymer) and PBT (polybutylene terephthalate)
And a material obtained by mixing glass fiber with a synthetic resin obtained by mixing the above-mentioned materials with the glass fiber as a molding material. As a commercially available product, for example, Novalloy-B (a trade name of Daicel Chemical Industries, Ltd., and Novalloy is a registered trademark of Daicel Chemical Industries, Ltd.) can be used.

A plurality of batteries 10 are stored in the container 40. In this case, each of the holders 50 arranged on the bottom portion 46 of the housing 44 is individually charged through the opening 52. This container 40
The transfer of the battery 10 to and from the battery is performed by an automated transport mechanism.

Next, the charge / discharge facility 80 according to the present embodiment will be described with reference to FIGS. The charging / discharging equipment 80 is a device that performs constant current charging, constant voltage charging, and constant current discharging on the battery 10, controls various circuits, and performs input and data processing of multi-channel detection and measurement data. A computer 82 in which hardware and software are incorporated so as to be able to operate, and a constant voltage circuit 84 which generates a constant voltage necessary for constant voltage charging of the power supply voltage Vc and supplies it to a subsequent circuit system under the control of the computer 82 And a constant current circuit 86 that generates a constant current necessary for constant current charging under the control of the computer 82 and supplies the constant current circuit to the subsequent circuit system; A constant current / voltage switching circuit 90 for selectively connecting one of them to a subsequent circuit system based on switching control of a computer 82; A discharge circuit 88 for keeping the current flowing from the battery constant, and a current for measuring the current flowing to the battery 10 side and the current flowing from the battery 10 and supplying the digital data (current measurement data) to the computer 82. A measuring circuit 92, a voltage measuring circuit 94 for measuring the voltage between both ends of the battery 10 and supplying the digital data (voltage measuring data) to the computer 82, and a digital data (temperature measuring data) for measuring the temperature of the battery 10 Is supplied to the computer 82.

The current measuring circuit 92 and the voltage measuring circuit 94
A / D converters 98, 100, and 102 are connected to the final stage of the temperature measurement circuit 96, respectively, and the analog measurement current waveform, the measurement voltage waveform, and the measurement temperature waveform (electric signal waveform corresponding to the temperature) are respectively digitalized. The data is converted and output as current measurement data, voltage measurement data, and temperature measurement data. Each A / D converter 98, 100
And the sampling time at 102 is, for example, 1 second or 2 seconds.
The sampling pulse Ps for each of the A / D converters 98, 100, and 102 is hard-wired so as to be supplied from the timing generator 104.

Further, the charging / discharging equipment 80 is, for example, 25
The multi-channel connection is configured such that constant current charging, constant voltage charging, and constant current discharging can be simultaneously performed on the zero batteries 10 respectively.

Specifically, first, the current measuring circuit 92, the voltage measuring circuit 94, and the temperature measuring circuit 96 are respectively connected to the battery 1
0 corresponding to the number of 0, these 250 current measuring circuit groups, 250 voltage measuring circuit groups and 25
It is derived from each of the zero temperature measurement circuit groups (250
× 3) The wires are connected to the computer 82.

A detection jig 110 shown in FIG. 5 is used in order to simultaneously measure 250 batteries 10.

The detection jig 110 includes the container 40 (see FIG. 2) capable of accommodating, for example, 250 batteries 10 arranged in a matrix, and the container 4.
0, an upper contact mounting plate 116 disposed above the container 40 and having a plurality of upper contacts 114 attached thereto corresponding to the respective batteries 10, and an upper contact mounting plate 116. An upper contact arm 118 for vertically moving the lower contact 116; a lower contact mounting plate 122 disposed below the container 40 and having a plurality of lower contacts 120 corresponding to each battery 10; Lower contact mounting plate 12
2 is configured to have a lower contact arm 124 for moving the arm 2 up and down.

The fixing base 112 is formed of a frame, and can fix the container 40 by supporting the peripheral portion of the container 40 upward. The frame opening 112a of the fixing base 112 is
Has an opening width that allows the insertion of the opening. Therefore, the lower contact mounting plate 122 is made to enter the lower side of the container 40 through the frame opening 112a of the fixing base 112 by the lower contact arm 124 so that the lower contact mounting plate 122 is attached to the lower contact mounting plate 122. Each child 120 comes into contact with, for example, the negative electrode of the corresponding battery 10.

The same is true for the upper contact mounting plate 116. The upper contact mounting plate 116 is advanced toward the upper side of the container 40 by the upper contact arm 118, whereby the upper contact mounting plate 116 is moved. Are brought into contact with, for example, the positive electrode of the corresponding battery 10, respectively.

An upper contact cable 126 is led out of each of the plurality of upper contacts 114 and connected to the corresponding current measuring circuit 92 and voltage measuring circuit 94, respectively. A lower contact cable 128 is also led out from each of the plurality of lower contacts 120, and is connected to a common negative power source -Vc or ground (potential Vss) with the corresponding voltage measuring circuit 94, respectively.

A plurality of surface contacts 130 for detecting the temperature of the battery 10 are attached to the upper contact mounting plate 116 in addition to the plurality of upper contacts 114, and the tip of each surface contact 130 is attached to the upper contact 114. Each battery is positioned so as to contact the surface of the battery 10. A surface contact cable (not shown) is led out from each of the plurality of surface contacts 130, and a corresponding temperature measurement circuit 96 is provided.
Is to be connected to. The surface contact 13
0 can be composed of, for example, a thermistor or a thermocouple.

When the charge / discharge measurement is performed on the 250 batteries 10, the 250 batteries 1 are stored in the container 40.
0, for example, with the positive electrode facing upward,
Is placed on the frame of the fixed base 112 using a transfer arm or the like. Thereafter, the upper contact mounting plate 116 is moved downward by the upper contact arm 118, and the upper contact
4 is brought into contact with the corresponding positive electrode of the battery 10, and the lower contact arm mounting plate 1
22 is moved upward to bring the plurality of lower contacts 120 into contact with the corresponding negative electrodes of the battery 10.

In this state, the computer 82 selectively controls the constant current / voltage switching circuit 90 to perform constant current charging, constant voltage charging, and constant current discharging on the 250 batteries 10. Become. The current measurement data, the voltage measurement data, and the temperature measurement data for the 250 batteries 10 are supplied to the computer 82, and under the program control of the CPU in the computer 82, the data RAM is used as a transfer buffer and a hard disk, a flexible disk (FD) is used. ), Magneto-optical disk, CD-
Data is transferred to an external storage device 132 such as R (see FIG. 4).

In the charging / discharging facility 80 according to this embodiment, as shown in FIG. 4, a standard resistor 140 is provided corresponding to the battery 10, and one of the battery 10 and the standard resistor 140 is provided. A first switching circuit 142 for selectively connecting one to the constant current circuit 86 or the current measurement circuit 92 (current measurement circuit 92 in the illustrated example);
A second switching circuit 144 for selectively connecting one of the battery 10 and the standard resistor 140 to the voltage measuring circuit 94 is provided. The standard resistor 140 is configured to have a resistance value of, for example, 5Ω using various resistance materials.

The first switching circuit 142 has two sets of switching circuits 146 and 148 interlocked with each other. One of the switching circuits 146 is connected to the upper contact 114 connected to the positive electrode of the battery 10. One fixed contact 146 a, a second fixed contact 146 b connected to one terminal of the standard resistor 140, and a first movable contact 146 c connected to the output side of the current measuring circuit 92. , The other switching circuit 148 includes a third fixed contact 148 a connected to the lower contact 120 contacting the negative electrode of the battery 10, and a fourth fixed contact 148 b connected to the other terminal of the standard resistor 140. And a second movable contact 14 connected to a negative power supply -Vc or ground (potential Vss).
8c.

The second switching circuit 144 also has two sets of switching circuits 150 and 152 interlocked with each other. One switching circuit 150 is connected to the upper contact 114 connected to the positive electrode of the battery 10. 5 fixed contact 150a, a sixth fixed contact 150b connected to one terminal of the standard resistor 140, and a third movable contact 150c connected to one input terminal of the voltage measuring circuit 94. The other switching circuit 152 includes a seventh fixed contact 152a connected to the lower contact 120 that is in contact with the negative electrode of the battery 10, and an eighth fixed contact 152 connected to the other terminal of the standard resistor 140. A contact 152b and a fourth movable contact 1 connected to the other input terminal of the voltage measuring circuit 94
52c.

The standard resistor 140 and the first and second switching circuits 142 and 144 constitute a part of self-diagnosis means for diagnosing the performance of the charging / discharging facility 80 according to the present embodiment. In addition, other components are incorporated as software (algorithm) in the computer 82.

The configuration of the self-diagnosis means will be described with reference to the functional block diagram of FIG. 6. The self-diagnosis means includes, in addition to the standard resistor 140, the first and second switching circuits 142 and 144, It has a switching control means 160, a discrimination means 162 and a processing control means 164.

The switching control means 160 outputs a first switching control signal Sw1 to each of the first and second switching circuits 142 and 144 based on the start of the charge / discharge processing, and the processing control means 164 starts processing. First and second switching circuits 1 based on a command Sa
It has a function of outputting the second switching control signal Sw2 to each of 42 and 144. When the processing control unit 164 outputs the processing stop command Sb, the first and second processing
Of the first switching control signal Sw1 to the switching circuits 142 and 144 of FIG. That is, battery 1
The processing is stopped without performing the charge / discharge processing for 0.

The determining means 162 detects that the constant current from the constant current circuit 86 passes through the current measuring circuit 92 and the standard resistor 140
Has a function of detecting, through the voltage measuring circuit 94, a voltage generated at both ends of the standard resistor 140 as a result of flowing through the standard resistor 140, and determining whether or not the detected level is within a predetermined range.

The processing control means 164 is provided with
If the determination result from Step 2 indicates a positive result (determination result indicating that the detection level is within the predetermined range), a processing start command Sa is output to the switching control means 160, and the determination means 1
When the determination result from 62 indicates a negative result (determination result that the detection level is out of the predetermined range), the switching control means 160 has a function of outputting a processing stop command Sb.

In particular, the standard resistor 140 and the first and second switching circuits 142 and 144 include the battery 1
The current measurement circuit 92 and the voltage measurement circuit 94 corresponding to each battery 10 are prepared for 250 batteries in accordance with the number of zeros.
And the battery 10 are inserted and connected. Therefore, the switching control means 160, the discrimination means 162 and the processing control means 164 are programmed so that the processing for 250 channels can be sequentially performed according to the number of the batteries 10.

The charging / discharging equipment 80 according to the present embodiment is basically configured as described above, and its operation and effect will be described next.

First, when the start of charging / discharging is instructed from the outside, the first and second switching circuits 142 and 144 are supplied to the first and second switching circuits 142 and 144 through the switching control means 160, respectively.
Is output as the switching control signal Sw1. The first switching circuit 142 moves the first movable contact 146c of the one switching circuit 146 to the second fixed contact 146b side (the standard resistor 140 side) based on the input of the first switching control signal Sw1. Switching, the second movable contact 14 in the other switching circuit 148
8c to the fourth fixed contact 148b side (standard resistor 140
Side).

The second switching circuit 144 supplies the third movable contact 1 in one of the switching circuits 150 based on the input of the first switching control signal Sw1.
50c is connected to the sixth fixed contact 150b (standard resistor 140
Side), and the fourth movable contact 152c in the other switching circuit 152 is switched to the eighth fixed contact 152b side (standard resistor 140 side).

As a result, the current measuring circuit 92 and the standard resistor 140 are connected through the first switching circuit 142, and the voltage measuring circuit 94 and the standard resistor 140 are connected through the second switching circuit 144.

Thereafter, under the control of the computer 82, a constant current is output from the constant current circuit 86, and the constant current is supplied to the current measuring circuit 92 and the first switching circuit 14.
2 to the standard resistor 140. As a result, a voltage corresponding to the voltage drop appears at both ends of the standard resistor 140. The voltage between both ends is supplied to the second switching circuit 144.
Is detected by the voltage measurement circuit 94, and the detected voltage is sent to the determination means 162 as detection data Dc.

The determination means 162 determines whether the value of the supplied detection data Dc is within a predetermined range, and the result of the determination is sent to the processing control means 164.

When the determination result indicates a positive result (the value of the detection data Dc is within a predetermined range), the processing control means 164 is connected to the charge / discharge processing system for the battery 10, that is, the battery 10. The upper contact 114, the current measuring circuit 92, the voltage measuring circuit 94, and the lower contact 120 are determined to have not deteriorated in performance.
The processing start command Sa is output to 0. The switching control means 160 receives the processing start command S from the processing control means 164.
a and the second switching circuit 1 based on the input of
The second switching control signal Sw2 is output to 42 and 144.

The first switching circuit 142 receives the second switching control signal Sw 2 and outputs the first movable contact 1 in one of the switching circuits 146.
46c is switched to the first fixed contact 146a side (battery 10 side), and the second movable contact 148c in the other switching circuit 148 is switched to the third fixed contact 148a side (battery 1 side).
0).

The second switching circuit 144 supplies the third movable contact 1 in one of the switching circuits 150 based on the input of the second switching control signal Sw2.
50c is switched to the fifth fixed contact 150a side (battery 10 side), and the fourth movable contact 152c in the other switching circuit 152 is switched to the seventh fixed contact 152a side (battery 1).
0).

Thus, the current measuring circuit 92 and the battery 1
0 is connected through a first switching circuit 142, and the voltage measurement circuit 94 and the battery 10 are connected through a second switching circuit 144.

On the other hand, if the result of the determination by the determination means 162 indicates a negative result (the value of the detection data Dc is not within the predetermined range), the processing control means 164 performs a charge / discharge processing system for the battery 10, The upper contact 114, the current measuring circuit 92, the voltage measuring circuit 94, and the lower contact 120 connected to the battery 10 output a processing stop command Sb to the switching control means 160, assuming that the performance has deteriorated. The switching control means 160 receives the first processing stop command Sb from the processing control means 164,
And the output of the first switching control signal Sw1 supplied to the second switching circuits 142 and 144 is maintained.

As a result, the current measuring circuit 92 and the standard resistor 140 are connected via the first switching circuit 142, and the voltage measuring circuit 94 and the standard resistor 140 are connected via the second switching circuit 144. State.

By performing the series of operations on the 250 batteries 10, the performance check of the charge / discharge processing system corresponding to each battery 10 is completed. When the performance check is completed, the computer 82 controls various circuits so as to perform charge / discharge processing on each of the normally connected batteries 10.

As described above, in the charging / discharging equipment 80 according to the present embodiment, the performance of the charging / discharging processing system corresponding to each battery 10 is diagnosed by the self-diagnosis unit prior to the charging / discharging processing for each battery 10. You. Then, the charging / discharging process is performed on the battery 10 whose diagnosis result is a positive result, and the charging / discharging process on the battery 10 whose diagnosis result is a negative result is stopped.

That is, the charge / discharge facility 8 according to the present embodiment
In the case of 0, the performance state of the charge / discharge facility 80 can be objectively and promptly determined through the self-diagnosis means, so that the number of steps in the charge / discharge processing step can be efficiently reduced.

In this embodiment, an example in which the present invention is applied to a cylindrical battery 10 has been described. However, the present invention can also be applied to a secondary battery of a button type, a square type or the like, or a secondary battery of various shapes.

The battery charging / discharging equipment according to the present invention is not limited to the above-described embodiment, but may have various configurations without departing from the gist of the present invention.

[0070]

As described above, according to the battery charging / discharging equipment according to the present invention, the charging / discharging process having at least the constant current circuit and the voltage measuring circuit and performing the charging / discharging process on the battery is performed. Means and self-diagnosis means for diagnosing performance in the charge / discharge processing means prior to charge / discharge processing of the plurality of batteries by the charge / discharge processing means.

Therefore, the performance state of the charge / discharge processing apparatus can be objectively and quickly determined, and the effect of efficiently reducing the number of steps in the charge / discharge processing step is achieved. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a battery that is subjected to a charge / discharge process in a charge / discharge facility according to the present embodiment.

FIG. 2 is a perspective view showing a configuration of a container capable of accommodating a plurality of batteries.

FIG. 3A is a plan view showing the configuration of a holder provided on the bottom of the container, and FIG. 3B is a longitudinal sectional view of the holder.

FIG. 4 is a block diagram showing a hardware configuration of the charge / discharge facility according to the present embodiment.

FIG. 5 is a configuration diagram of a detection jig used when performing a charge / discharge process on a battery housed in a container.

FIG. 6 is a functional block diagram showing a configuration of a self-diagnosis unit incorporated in the charge / discharge facility according to the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Battery 40 ... Container 80 ... Charge / discharge equipment 82 ... Computer 86 ... Constant current circuit 92 ... Current measurement circuit 94 ... Voltage measurement circuit 110 ... Detection jig 114 ... Upper contact 120 ... Lower contact 140 ... Standard resistor 142 first switching circuit 144 second switching circuit 160 switching control means 162 discriminating means 164 processing control means

Claims (2)

[Claims] 1. A charge / discharge processing means having at least a constant current circuit and a voltage measurement circuit, and performing charge / discharge processing on a battery; and prior to charge / discharge processing on the battery by the charge / discharge processing means, A battery charge / discharge facility comprising self-diagnosis means for diagnosing performance in the charge / discharge processing means. 2. The battery charging / discharging facility according to claim 1, wherein said self-diagnosis means has a resistor installed corresponding to said battery, and said one of said battery and said resistor is used as said constant. A first switching circuit for selectively connecting to the current circuit; a second switching circuit for selectively connecting one of the battery and the resistor to the voltage measurement circuit; and a resistor by the constant current circuit. Detecting means for detecting a voltage generated at both ends of the resistor through the voltage measuring circuit through the voltage measurement circuit, and determining whether or not the detection level is within a predetermined range; and a determination result by the determination means is a positive determination. In some cases,
A battery charging / discharging facility, comprising: a controller configured to cause the charging / discharging process to be performed by the charging / discharging process unit, and to stop the charging / discharging process by the charging / discharging process unit when the determination result is negative. .