KR20130093020A - Charge discharge testing apparatus and method for manufacturing the same - Google Patents

Abstract

PURPOSE: A charge/discharge testing device and a manufacturing method thereof are provided to connect a tested object and a charge/discharge power source without a cable, thereby performing the charge/discharge test of the tested objects having different shapes, sizes, and capacities. CONSTITUTION: A charge/discharge testing device (2) includes a test suite for receiving a tested object, a charge/discharge power source (8) prepared in the outside of the test suite, and a connection tool for electrically connecting the tested object received in the test suit to the charge/discharge power source prepared in the outside of the test suite. The test suit is partitioned by insulating walls. In the part of the insulating wall, an opening is formed. The opening is closed by internal/external wall plates, facing each other, from the thickness direction both sides of the insulating wall. Insulating material is interposed between the internal and external wall plates. Mounting holes are respectively formed in the internal/external wall plates. The connection tool is mounted in the mounting hole so as to pass through the internal/external wall plates.

Description

Charging and discharging test apparatus and its manufacturing method {CHARGE DISCHARGE TESTING APPARATUS AND METHOD FOR MANUFACTURING THE SAME}

TECHNICAL FIELD The present invention relates to a charge / discharge test apparatus and a method of manufacturing the same for performing charge / discharge tests on secondary batteries, electric double layer capacitors, and the like.

In recent years, with the advance of electronic technology, the demand of the secondary battery used for the various high performance, miniaturization, and portable electronic devices, an electric vehicle as an environmentally-friendly product, etc. increases. Accordingly, in order to secure the research and development of the secondary battery and the reliability of the product, an apparatus for performing the charge and discharge test of the secondary battery has been proposed (see Patent Document 1, for example).

Conventionally, when performing the charge / discharge test of a secondary battery in a desired temperature environment, the existing constant temperature tester is used. It is a figure which shows schematic structure of the system for performing charge / discharge test of a secondary battery using a constant temperature tester.

This system includes a constant temperature tester 36 having a thermostatic chamber in which a plurality of battery trays 35 on which a test battery (not shown) as a test object is mounted is stored, and a plurality of charge / discharge corresponding to each battery tray 35. The charging / discharging power supply rack 38 which accommodated the power supply 37, and the control apparatus 39 which consists of computers, which control these, and perform a charging / discharging test are provided.

The plurality of battery trays 35 and the plurality of charge / discharge power supplies 37 of the charge / discharge power supply rack 38 that are housed in the thermostat of the constant temperature tester 36 pass through the cable holes 40 formed to penetrate the heat insulating material of the thermostat. It is connected by the some power supply connection cable 41 carried out airtightly. Thereby, the test battery which is the secondary battery attached to the battery tray 35, and the charge / discharge power supply 37 are electrically connected. In addition, the control apparatus 39 is individually connected to the constant temperature tester 36 and the charge / discharge power supply rack 38 via each communication cable 42 and 43.

Patent Document 1: Japanese Patent Laid-Open No. 2003-282150

In such a conventional system, the constant temperature tester 36 and the charge / discharge power supply rack 38 are provided separately, and the charge of the battery tray 35 and the charge / discharge power supply rack 38 accommodated in the thermostat of the constant temperature tester 36 is provided. Since the discharge power supply 37 is connected with the power supply connection cable 41, space efficiency is bad and there exists a subject that the connection work of the power supply connection cable 41 takes time. In addition, when the power supply connection cable 41 is long, the resistance or inductance of the wiring increases, so that it is difficult to improve the accuracy of the electrical characteristic measurement (measurement of voltage, current, frequency, impedance, etc.), or Joule heat generation by the resistance There is a problem that the power loss increases.

In addition, when performing the charge / discharge test of secondary batteries having different capacities, sizes, and shapes, which differ in size and shape, and the like, the battery is replaced with a battery tray corresponding to the secondary battery. Another problem is that the battery tray and the charge / discharge power supply must be connected again with a power connection cable.

The present invention has been made in view of the above-mentioned points, and solves the above problems by not requiring a cable for connection between the test object and the charging / discharging power source, and corresponds to a test object having a different capacity, size, shape, or the like. It is a main object to make it easy to manufacture the charge / discharge test apparatus of one specification.

In order to achieve the above object, the present invention is configured as follows.

(1) The charging / discharging test apparatus of the present invention includes a test chamber in which a test object is accommodated, a charge / discharge power supply provided outside the test tank, the test object accommodated in the test tank, and the charge / discharge power supply outside the test tank. An opening formed in a part of the heat insulating wall that partitions the test tank, the opening being formed to be electrically connected, and closed from both sides in the thickness direction of the heat insulating wall by opposing inner and outer wall plates. The connection port is attached to each mounting hole formed in each of the inner and outer wall plates so as to penetrate both the inner and outer wall plates through a heat insulating material between the wall plates.

It is preferable that the said opening is formed in the heat insulation wall of the inside of a test tank which opposes the entrance / exit which lets a test object pass in and out of a test tank. This opening electrically connects the charge-discharge power supply outside the test tank and the test object in the test tank by a connection port provided to penetrate both inner and outer wall plates blocking the opening. Therefore, the size of the opening is preferably such that the charge / discharge power source provided outside the test tank is large enough to face the test tank.

According to the charging / discharging test apparatus of the present invention, an opening formed in a part of the heat insulating wall partitioning the test tank is accommodated in the test tank by a connection port provided so as to penetrate both wall plates by sandwiching a heat insulating material between inner and outer wall plates. Electrically connect the specimen under test and the charge / discharge power source outside the test chamber. Therefore, a power supply connection cable for connecting the test object and the charge / discharge power supply is unnecessary, space efficiency is improved, and it is not necessary to perform troublesome connection work of the power supply connection cable.

In addition, each of the inner and outer wall plates is provided with mounting holes corresponding to the connection ports at required positions, and the inner and outer wall plates are opposed to each other with an opening formed in a part of the heat insulating wall interposed therebetween, The opening is closed by attaching a connector and interposing a heat insulating material between the two wall plates. Thereby, the heat insulation wall which penetrated the required connection port in the required position can be easily obtained.

Therefore, in the case of manufacturing a charge / discharge test apparatus having a specification corresponding to a test object having a large difference in capacity, size, shape, or the like, for example, a charge / discharge test apparatus having different connections or installation positions thereof, an opening formed in a part of the heat insulation wall. It is possible to prevent the charge and discharge test apparatus having specifications according to the capacity, size and shape of the specimen to be easily and inexpensively manufactured by using a wall plate and a heat insulating material inside and outside where the connector of the specification corresponding to the specimen is mounted. Can be.

(2) In a preferred embodiment of the present invention, a sample tray in which a test object is placed is accommodated in the test tank, and the sample tray has a connection portion for electrically connecting the test object to be arranged and the connection port. The connection port electrically connects the test object placed in the sample tray and the charge / discharge power supply via the sample tray.

According to this embodiment, since the connection portion of the sample tray is connected to the connection port, the charge and discharge test can be conducted by electrically connecting the test object and the charge / discharge power supply of the sample tray. It is not necessary to connect the discharge power supply with a power connection cable.

(3) In still another embodiment of the present invention, the charging / discharging power supply and the connecting port are provided in multiple stages in the vertical direction, respectively, and the plurality of mounting holes in which the connecting ports are attached to the respective inner and outer wall plates are provided in the vertical direction. It is formed in each direction, and the heat insulating material interposed between the said inner and outer wall boards is laminated | stacked in multiple steps in an up-down direction.

According to this embodiment, when manufacturing the charging / discharging test apparatus of the specification corresponding to the test object with a different capacity, size, etc., the inside and outside wall boards, a heat insulating material, and a connection which block the opening formed in a heat insulation wall are based on a specification. The charging / discharging power supply may be made according to the specification, and the charging / discharging test apparatus having the specification corresponding to the test object having a different capacity, size, or the like can be easily manufactured.

(4) In another embodiment of the present invention, the connector is hermetically mounted to the mounting hole via a sealing material.

According to this embodiment, it is possible to prevent the air whose temperature or humidity is adjusted from flowing out of the test tank from the connection port mounting portion in the heat insulating wall, to increase the heat insulating performance of the test tank and maintain a stable environment.

(5) The manufacturing method of the charge / discharge test apparatus of the present invention includes a test tank in which a test object is accommodated, a charge / discharge power supply provided outside the test tank, the test object accommodated in the test tank and the charge outside the test tank. A method for manufacturing a charge / discharge test apparatus having a connector for electrically connecting a discharge power source, the method comprising: openings formed in a part of a heat insulating wall that partitions the test tank, and inner and outer wall plates each having a mounting hole to which the connector is mounted. Thus, the connecting port is mounted in the mounting hole so as to be prevented from both sides in the thickness direction of the heat insulating wall, and interposed between the inner and outer wall plates so as to pass through the inner and outer wall plates.

According to the manufacturing method of the charge / discharge test apparatus of this invention, when manufacturing the charge / discharge test apparatus of the specification corresponding to the test object with a big difference in capacity | capacitance, size, shape, etc., it is formed in the heat insulation wall which partitions a test tank. What is necessary is just to block an opening using the inside and outside wall boards and a heat insulating material in which the connection opening according to a specification is mounted, and the charge / discharge test apparatus of the specification according to the capacity | capacitance, size, shape, etc. of an object to be tested can be manufactured easily and at low cost.

As mentioned above, according to this invention, the test object accommodated in a test tank by the connection hole which penetrates the opening formed in the heat insulation wall which partitions a test tank between the inside and outside wall boards, and penetrates both wall boards. The charge and discharge test can be conducted by electrically connecting the charge and discharge power supply outside the test tank. This eliminates the need for a power connection cable for connecting the test object and the charge / discharge power supply, improves the space efficiency, and eliminates the need for cumbersome connection of the power supply connection cable.

Moreover, the improvement of the precision of electrical characteristic measurement (voltage, current, or impedance measurement at higher frequencies, etc.) enables evaluation of the battery characteristic in the area which was not possible conventionally. In addition, the effect that the quality of the applied waveform applied to the sample is improved to increase the rise time and the effect of reducing the power loss due to the wiring resistance can be expected.

In addition, when manufacturing the charge / discharge test apparatus of the specification corresponding to the test object with a different capacity | capacitance, size, etc., the inside and outside wall boards, a heat insulating material, and a connection which block the opening formed in a heat insulation wall shall be based on a specification, What is necessary is just to follow a power supply according to a specification, and the charge / discharge test apparatus of the specification corresponding to the test object with a different capacity, size, etc. can be manufactured easily and at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the system provided with the charging / discharging test apparatus which concerns on one Embodiment of this invention.
FIG. 2 is a perspective view showing a schematic configuration by cutting the inside of the charge / discharge test apparatus of FIG. 1. FIG.
3 is a perspective view showing a connection configuration of a connector of a sample tray and a charge / discharge power supply.
4 is a longitudinal side view of the test chamber.
5 is a longitudinal side view showing an opening formed in the heat insulation wall of the test tank.
6 is an exploded perspective view of the inner and outer wall plates and the heat insulating material which close the opening formed in the heat insulating wall of the test tank.
7 is a longitudinal side view of a test bath having heat insulating walls of different specifications.
It is a longitudinal side view of the test tank of another embodiment in which a connector attachment site differs.
9 is a schematic configuration diagram of a system of a conventional example.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1: is a figure which shows schematic structure of the charge / discharge evaluation system 1 which evaluates the charge / discharge characteristic of test objects, such as a secondary battery.

In this charge / discharge evaluation system 1, charge / discharge tests of test objects such as various secondary batteries such as nickel-cadmium batteries, lithium ion batteries, nickel-hydrogen batteries, and electric double layer capacitors can be performed.

The charging / discharging evaluation system 1 controls the charging / discharging test apparatus 2 and the charging / discharging test apparatus 2 according to one embodiment of the present invention to perform charge / discharge tests of the test object, for example, by a computer. The control device 3 is provided.

The charge / discharge test apparatus 2 of this embodiment is provided with the single case 4. The case 4 is roughly the front part as the test part 6 provided with the constant temperature test tank in which the some sample tray 5 with which the to-be-tested object (not shown) was mounted is provided, In addition, a plurality of charge / discharge power supplies 8 corresponding to the respective sample trays 5 are provided as the power supply unit 9. The test part 6 on the front side and the power supply part 9 on the back side are partitioned back and forth by the partition wall 7 of a heat insulation structure, as shown typically with a virtual line. The test section 6 and the power supply section 9 are basically provided with functions as a constant temperature tester and a charge / discharge power supply rack of the conventional example of FIG. 9.

The control apparatus 3 is connected to the charge / discharge test apparatus 2 via the test cable 10 and the communication cable 11 for charge / discharge power supply. The control apparatus 3 controls the charging / discharging test apparatus 2, and performs the charging / discharging test of the test object w.

FIG. 2: is a perspective view which cuts the inside of the charge / discharge test apparatus 2 in FIG. 1, and shows schematic structure.

In the charge / discharge test apparatus 2 of this embodiment, the door 12 of a heat insulation structure is affixed on the front surface of the case 4. The inside of the charge / discharge test apparatus 2 is provided with the test tank 13 which is a constant temperature tank which can accommodate the some sample tray 5 in which the to-be-tested object w is arrange | positioned. In the test tank 13, the sample tray 5 can be accommodated in multiple stages in the up-down direction.

In the right part of the front door 12 in the case 4, the display part 14 which displays temperature data etc. and the operation part 15 operated for setting of temperature etc. are provided.

As for the test tank 13, the circumferential wall except the entrance of the front surface opened and closed by the door 12 is comprised by the heat insulation wall. The test tank 13 is partitioned from the power storage space in which the charge / discharge power source 8 was stored by the inner partition 7 which constitutes a part of the heat insulation wall. And the charging / discharging power supply 8 is arrange | positioned in the multiple direction in the up-down direction in the power supply storage space outside the test tank 13.

The right side of the test tank 13 is partitioned from the air conditioning space by the partition plate 18 which has a ventilation hole. By driving the plurality of blowers 19, the temperature controlled air is circulated between the test chamber 13 and the air conditioning space.

In the test tank 13, when each sample tray 5 in which the test object w is mounted is inserted into the tank or taken out from the test tank 13, as indicated by arrow A, each sample tray ( A pair of left and right guide rails (not shown) for guiding and supporting 5) along the horizontal direction are provided.

A connector 26 serving as a connection port of each of the plurality of charging / discharging power sources 8 that is stored up and down in the power storage space is penetrated and supported by the partition 7 inside the test tank 13. It protrudes. In this embodiment, the connector 26 is used as an edge connector.

Each test piece w is arrange | positioned at the sample tray 5, and is attached to each some socket (not shown) equipped with the said sample tray 5. As shown in FIG. As shown in FIG. 3, the tip 27 of the sample tray 5 in the insertion direction into the test chamber 13 is provided with an edge 27 as a sample side connection part corresponding to the connector 26 of the charge / discharge power supply 8. It is.

As shown in FIG. 4, the sample tray 5 slides in the horizontal direction along the guide rail in the test tank 13, and inserts the edge 27 provided in the front-end | tip part through the partition 7 By inserting into the connector 26, the test object w can be electrically connected to the charge / discharge power supply 8 via the wiring of the socket and the sample tray 5. In addition, the sample tray 5 is pulled out from the test tank 13 along the guide rails and drawn out, and the edge 27 is pulled out from the connector 26, whereby the test object w and the charge / discharge power source 8 ) Can be electrically disconnected.

In this way, the sample tray 5 on which the test object w is mounted is inserted into the test tank 13 by sliding in the horizontal direction along the guide rail or by sliding out of the test tank 13 to take out the sample tray 5. Electrical connection and non-connection of the test object w on (5) and the charging / discharging power supply 8 can be performed simply.

Temperature control in a charge / discharge test changes with the test made into the objective. For example, the sample tray 5 on which the test object w is mounted is set in the test tank 13, and the test tank 13 is set at a set temperature such as 80 ° C., 25 ° C., minus 10 ° C., or the like. It controls and performs charging / discharging test at each temperature, respectively. In this charge / discharge test, for example, at least one of charging and discharging the test object w is performed to acquire characteristic data such as charging characteristics, discharging characteristics, and repeating characteristics of charging and discharging. Based on the acquired characteristic data, the charge / discharge characteristic of the test object w can be evaluated.

In the charge / discharge test apparatus 2 of this embodiment, the charge / discharge power supply 8 is accommodated in the single case 4, and the plurality of sample trays 5 on which the test object w is mounted are tested. The test object w and the charge / discharge power supply 8 are electrically connected by sliding in the tank 13 and inserting the edge 27 of the front end part into the connector 26 of the charge / discharge power supply 8. Therefore, as in the conventional example, it is not necessary to connect the sample tray of the constant temperature tester which consists of individual cases, and the charge / discharge power supply of the charge / discharge power supply rack with a power supply connection cable, space efficiency improves, and laborious connection of a power supply connection cable is performed. There is no need to do it.

Moreover, since the charge / discharge power supply 8 is arrange | positioned in multiple stages along the up-down direction of the case 4, space efficiency is good.

As mentioned above, the capacity | capacitance, size, and shape of the test object w, such as a secondary battery, vary. Therefore, in order to perform charge / discharge tests of the test object w having different capacities, sizes, and the like, for example, the number of charge / discharge power supplies 8 and the connectors 26, the types of the connectors 26, and the connectors 26 are used. The upper and lower installation intervals, etc. shall be in accordance with the test object (w).

Thus, in this embodiment, in order to manufacture the charge / discharge test apparatus of the specification corresponding to the test object w from which a capacity | capacitance, size, etc. differs easily and at low cost, it comprises as follows.

That is, in the manufacturing method of the charge / discharge test apparatus 2 of this embodiment, as shown in FIG. 5, the rectangular large opening 33 is formed in the heat insulation wall 34 inside the test tank 13. As shown in FIG. . Insulating material 33 such as urethane foam or glass wool is formed between both wall plates 29a and 29b by the inner and outer wall plates 29a and 29b shown in FIG. 6 from both sides in the thickness direction of the heat insulation wall 34. It is prevented through 30 and the partition 7 of a heat insulation structure is comprised as shown in FIG.

As shown in FIG. 6, the mounting hole 28 which penetrates and supports the connector 26 is previously formed in the inner and outer wall boards 29a and 29b which comprise the partition 7. The heat insulating material 30 is divided up and down at the connector through part and laminated | stacked, and the connector 26 is penetrated through the through-hole 31 formed in the divided surface. The inner and outer wall plates 29a and 29b are interposed between the heat insulators 30, and the connectors 26 are mounted so as to pass through the wall plates 29a and 29b, respectively, and screwed to the peripheral portions of the openings 33, respectively.

According to such a structure, when manufacturing the charging / discharging test apparatus of the specification corresponding to the test object w with a big difference in capacity | capacitance, size, shape, etc., the connector 26 according to the specification, and the inside and outside wall plates 29a, What is necessary is just to block the opening 33 formed in the heat insulation wall 34 using 29b) and the heat insulating material 30. FIG. Since it is not necessary to manufacture the whole test tank 13 again according to a specification, a manufacturing process is simplified and cost can be reduced.

For example, when the charge / discharge test of the test object w having a size larger than that of the test object w of FIG. 4 is performed, as shown in FIG. 7, the inner and outer spaces of the connector 26 are widened. The opening 33 may be closed using the wall plates 29a and 29b, and a corresponding charging / discharging power source 8 may be provided.

In addition, in the case where the test tank 13 is used as the humidity chamber, as shown in FIG. 8, the seal member 32 is applied to the periphery of the connector 26 or by being fitted to the outside. It is desirable to improve the airtightness of the.

In addition, when the internal and external wall plates 29a and 29b, the heat insulating material 30 and the connector 26 are replaced in accordance with the required specifications, the guide rails provided on the left and right inner surfaces of the test chamber 13 also include the connector 26. By changing the height according to the position of the or by adjusting the height of the rail, even if the sample tray (5) containing a large test object (w) mounted to be easily inserted into the test tank (13).

In addition, the connector 26, the plurality of types of inner and outer wall plates 29a and 29b and the heat insulating material 30 having different positions of the upper and lower intervals and the height positions thereof are provided so as to correspond to the edges 27 of the sample tray 5 to be inserted. It prepares in advance, and selects and attaches these to the opening 33 formed in the heat insulation wall 34 inside the test tank 13, and to the sample tray 5 comprised according to the size, shape, etc. of the to-be-tested object w, etc. Adapted test baths 13 can be manufactured or modified.

(Other Embodiments)

This invention can also be implemented with the following forms.

(1) Even if the heat insulating material 30 provided between the inside and outside wall boards 29a and 29b is a resin material injected and foamed between the inside and outside wall boards 29a and 29b which assembled the connector (connection port) 26, good.

(2) The connector 26 for electrically connecting the sample tray 5 and the charge / discharge power supply 8 is not limited to the edge connector. For example, by using a connector such as another connector that can be fitted or detached as the sample tray 5 is inserted into or removed from the test chamber 13, or a contact method such as a pogo pin (spring probe) having a spring action. Also good.

(3) In the above-mentioned embodiment, although the charging / discharging test apparatus 2 is equipped with the single test tank 13 which is long up and down, it is equipped with several test tanks up and down, and each test tank has a test tray in multiple stages. It may be to house the.

(4) The test tank 13 for storing the test object w is not limited to a thermostatic chamber, but may be one of a specification that brings about an environment required for the test in addition to a constant temperature / humidity chamber and a pressure vessel.

2: charge / discharge test device
3: Control device
4: Case
5: sample tray
7: bulkhead
8: charge / discharge power supply
13: test tank
26: connector (connector)
28: mounting hole
29a, 29b: wallboard
30: heat insulation
32: seal
w: EUT

Claims (5)

A test chamber for receiving a test object, a charge / discharge power source provided outside the test tank, and a connection port for electrically connecting the test object accommodated in the test tank and the charge / discharge power source outside the test tank,
The opening formed in a part of the heat insulating wall partitioning the test tank is blocked by opposite inner and outer wall plates from both sides in the thickness direction of the heat insulating wall, and the heat insulating material is interposed between the inner and outer wall plates. A charge-discharge test apparatus, wherein the connection port is attached to each of the mounting holes formed in each of the wall plates so as to penetrate both the inner and outer wall plates. The test tray according to claim 1, wherein a sample tray in which a test object is placed is accommodated in the test tank.
The sample tray has a connecting portion for electrically connecting the test object to be arranged and the connection port,
The said connection port is a charge / discharge test apparatus which electrically connects the test object arrange | positioned at the said sample tray and the said charge / discharge power supply via the said sample tray. The said charging / discharging power supply and said connection port are provided in multiple stages, respectively, in the up-down direction,
In each of the inner and outer wall plates, a plurality of mounting holes to which the connection ports are mounted are formed in the vertical direction, respectively.
A charge-discharge test apparatus, wherein the heat insulating material interposed between the inner and outer wall plates is laminated in multiple stages in the vertical direction. The charging / discharging test apparatus according to claim 1 or 2, wherein the connector is hermetically mounted to the mounting hole via a sealing material. A charge / discharge test having a test tank accommodating a test object, a charge / discharge power source provided outside the test tank, and a connection port for electrically connecting the test object accommodated in the test tank and the charge / discharge power supply outside the test tank. As a manufacturing method of the device,
An opening formed in a part of the heat insulating wall partitioning the test tank is blocked from both sides in the thickness direction of the heat insulating wall by inner and outer wall plates each having a mounting hole to which the connector is mounted, and between the inner and outer wall plates. And mounting the connector to the mounting hole so as to penetrate both the inner and outer wall plates with a heat insulating material interposed therebetween.

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