JP2011069744A - Temperature measuring device for test of electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately measure the temperature of a battery to be tested when a test board mounting the battery to be tested is inserted in a casing to perform charge and discharge test. <P>SOLUTION: A temperature measuring device for test of an electronic component rotatably mounts a lever body 26 through a hinge 25 on the lower face of a support plate 23 in the casing so that the edge of the lever body may hang on the battery 5 on the board 1 inserted in the casing 21. The lever body 26 includes a thermocouple 29 on the edge, and contacts on the battery 5 to be tested on the board when the lever body is lowered. The temperature measuring device mounts a rotation member 31 through the hinges on both the sides of the support plate 23 respectively, assembles springs on each hinge, and bias so as to rotate the rotation member 31 upward. Therefor, the rotation member 31 pushes up the lever body 26 from downward, and the lever body holds a substantially horizontal posture. Furthermore, the lever body mounts a lever 33 on both the sides of the rotation member 31 downward. When the board 1 pushes in the casing along a rail, the edge of the board 1 contacts on the lever 33, and the edge of the board 1 is fitted to a socket 3 while the lever is pushed forward. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for measuring the temperature of a subject when performing a performance test of an electronic component such as a battery (including an electric double layer capacitor).

  Some rechargeable batteries (secondary batteries, electric double-layer capacitors, etc.) are called laminate types. These are made by thinly stacking electrode plates and separators alternately and sealing them with a laminate film. A pair of flexible electrode tabs extend outward. Although this laminate type battery is used alone, it is also used as a battery having a large capacity by bundling a plurality. In the development of such a laminated battery, a charge / discharge test is usually performed on a large number of batteries. That is, it is formed at the tip of the test board by preparing a plurality of batteries with the electrode tabs attached to the test board and inserting each test board into the housing of the test apparatus. The connecting portion is fitted into a socket incorporated in the housing, and connected to a test circuit through the socket, and a charge / discharge test is performed.

  In such a test, it is common to take a record of the temperature change of the test battery. For temperature measurement, a temperature sensor, such as a thermistor, is mounted on the board so as to be in thermal contact with the battery, and the lead wire leads to the connector on the board via a printed pattern. Can be easily measured.

  A thermistor is generally used as a temperature sensor, but a thermocouple may be used to increase measurement accuracy. However, just replacing the thermistor with a thermocouple will not work. Since a connector is interposed between the substrate on which the test battery is mounted and the temperature measuring device main body, a large measurement error occurs. In order to reduce such an error, it is necessary to use a dedicated connector made of a metal having a thermoelectromotive force characteristic substantially equal to that of a thermocouple, but such a type is expensive.

  An object of the present invention is to provide an apparatus that can accurately measure the temperature of an electronic component such as a battery attached to a test board using a thermocouple and that is inexpensive.

  A temperature measuring apparatus for testing an electronic component according to the present invention includes a substrate on which an electronic component as a subject is detachably mounted, a housing that detachably receives the substrate, and a substrate mounted on the housing. A socket into which the tip is inserted, an operation test circuit connected to a circuit on the board through the socket, a base end pivotally supported on the housing at a distance above the board, and a tip on the electronic component It consists of a descending casing, a temperature sensor provided at the tip of the casing and abutting on the electronic component, and a temperature measuring instrument connected via a lead wire extending from the temperature sensor. In this case, since the temperature sensor is provided not on the substrate but on the housing side, it is not necessary to provide the temperature sensor on each substrate, which is advantageous in terms of cost including labor for calibration.

  When inserting / removing the board into / from the housing, it would be in the way if a housing with a temperature sensor at the tip is hanging down. Therefore, when the rotating member pivotally supported by the housing, the spring provided on the rotating member to push up the housing by the rotating member, and the substrate are inserted into the housing, until then. In order to lower the casing that has been pushed up from below by the rotating member, it is possible to provide a lever that extends downward from the rotating member and is pushed by the tip of the substrate that has been pushed in. If comprised in this way, since a housing is normally pushed up from the bottom, it does not become an obstacle of the insertion / extraction of a board | substrate. And just before the board inserted into the housing fits into the socket, the tip of the board hits the lever and pushes it, the rotating member that has been flipping up the casing until then is separated from the casing, and the tip of the casing is on the board It falls on the subject and the temperature sensor comes into contact with the subject, allowing temperature measurement.

  In the invention of this application, since the temperature sensor is provided not on the substrate but on the housing side, the conducting wire extending from the temperature sensor can be directly coupled to the temperature measuring device without using a connector. Therefore, when a thermocouple is used as a temperature sensor, there is no dissimilar metal between the thermocouple and the temperature measuring instrument, so that the high accuracy peculiar to the thermocouple is not impaired and the temperature of the subject is accurately measured. There is an effect that can.

It is a perspective view of a battery test substrate. It is a front view of the electrode clamping part which holds the electrode of a test battery. It is a side view of the housing | casing in the state which inserted the board | substrate. It is a rear view of the housing | casing in the state which inserted the board | substrate.

  An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 3, the test substrate 1 can be pushed into the housing 21 along the rails 22, and the connection terminals 2 protruding to the front of the substrate are fixed to the housing. It fits into the socket 3 and is connected to the operation test circuit 24 provided in the housing 21. Reference numeral 5 denotes a laminate-type battery as a subject placed on the substrate 1, and a pair of flexible thin plate-like electrode tabs 6 extend in parallel from one end thereof. The test substrate 1 includes an electrode holding portion 7 that electrically connects the pair of electrode tabs so as to be held from above and below.

  As shown in FIGS. 2 and 3, the electrode clamping unit 7 clamps the battery electrode tab 6 between the substrate 1 and the contact terminal 10 attached to the lower surface of the upper clamping plate 9. A terminal 11 connected to the contact terminal 10 is connected to the connection terminal 2 of the substrate 1 through an electric wire 12. On the surface of the substrate 1, a pair of left and right contact terminals 13 made of metal foil are formed at positions facing the connection terminals 10, and these terminals are connected to the connection terminals 2 of the substrate 1 through a printed pattern. ing. These terminals 13 are used for measuring the voltage of the battery, and the contact terminals 10 are used as current supply terminals.

  Support columns 15 extend downward from both sides of the sandwiching plate 9, and these support columns penetrate through the substrate 1 and are fixed to an elongated base plate 16 made of plastic. On the other hand, three struts 17 extend upward from the substrate 1 through the sandwiching plate 9, and an elongated upper plate 19 is supported on the upper ends of these struts. A coil spring 20 is contracted between the upper plate 19 and the sandwiching plate 9 in a fashion along the column 17.

  In order to connect the battery to the electrode clamping unit 7, the base plate 16 is placed on a desk or the like, and the finger is pressed against the upper plate 19 as shown by the arrow in FIG. Then, as indicated by a chain line in the figure, the spring 20 contracts and the support column 17 projects below the sandwiching plate 9 to push down the substrate 1. Thus, since the space | interval of the board | substrate 1 and the clamping board 9 opens, the left and right electrode tab 6 is inserted between them. When the hand is released from the upper plate 19 in this way, the spring 20 expands, the substrate 1 is raised, and the electrode tab 6 is connected to the lower surface of the holding plate 9 and the contact terminals 10 and 13 provided on the upper surface of the substrate 1, respectively. I can get it in between.

  Next, the casing 21 will be described. As shown in FIGS. 3 and 4, a support plate 23 is provided at a position higher than the substrate 1, and the casing 26 is rotated via a hinge 25 on the lower surface and center line of the plate. The end of the housing 26 is lowered on the battery 5 on the substrate 1 inserted into the housing 21. A two-core vinyl-coated conductive wire 27 made of a different alloy is provided along the casing 26, and the tips of both the core wires are coupled to each other to form a thermocouple 29. This thermocouple contacts the test battery 5 on the substrate when the housing 26 is lowered. The conducting wire 27 is directly led to the temperature measuring device 28.

  As described above, the tip of the housing 26 hangs down due to its own weight, but it is difficult to insert the substrate 1 in such a state that it hangs down. Therefore, the casing 26 is usually flipped up so that the tip of the casing 26 hangs down immediately before the board 1 is inserted into the socket 3. For this reason, the rotating members 31 are attached to both sides of the support plate 23 via the hinges 30 and the springs 32 are incorporated in the hinges 30 to urge the rotating members 31 to rotate upward. Since the rotating member 31 is biased upward as described above, the rotating member 31 pushes up the casing 26 from below as shown by a chain line in FIG. 3, and the casing 26 maintains a substantially horizontal posture.

  Furthermore, levers 33 are attached to both sides of the rotating member 31 so as to face downward. When the board 1 is pushed into the housing along the rail 22, the tip of the board 1 comes into contact with the lever 33, and the tip of the board 1 is fitted into the socket 3 while pushing the lever forward. Thus, when the lever 33 is pushed forward, the rotating member 31 is rotated downward, the casing 26 that has been pushed up by the rotating member 31 is lowered, and the thermocouple 29 at the tip of the casing is moved to the substrate. The test battery 5 is placed on the test battery 5 and is brought into contact with the test battery 5. Thus, the battery charge / discharge test is performed, and the temperature of the battery under test is measured.

When the test is completed and the substrate 1 is pulled out backward so as to be removed from the socket 3, the lever 33 returns to the vertical position indicated by the chain line by the force of the spring 32 incorporated in the hinge 30, and the rotating member 31 is the casing. 26 is pushed up from below, and the housing becomes horizontal (FIG. 3). In this way, the substrate 1 can be pulled out from the housing 21 without being obstructed by the housing 26.

DESCRIPTION OF SYMBOLS 1 Board | substrate 3 Socket 5 Battery as an electronic component 6 Electrode tab 7 Electrode clamping part 21 Case 24 Operation test circuit 26 Housing 27 Conductor 28 Temperature measuring device 29 Thermocouple 31 Rotating member 32 Spring 33 Lever

Claims (3)

  A substrate on which an electronic component as a subject is detachably mounted, a housing that detachably receives the substrate, a socket that is attached to the housing and into which a tip of the substrate fits, and through the socket An operation test circuit connected to a circuit on the substrate; a housing whose proximal end is pivotally supported by the housing above the substrate; and a tip that hangs down on the electronic component; A temperature measuring device for testing an electronic component, comprising: a temperature sensor in contact with the electronic component; and a temperature measuring device connected via a conducting wire extending from the temperature sensor.   In addition, when the rotating member pivotally supported by the casing, the spring provided on the rotating member to push up the casing by the rotating member and the board inserted into the casing, 2. The apparatus according to claim 1, further comprising a lever that extends downward from the rotating member and is pushed by the tip of the substrate that is pushed into the housing in order to lower the casing that has been pushed up from below by the rotating member. Temperature measuring device for testing electronic parts.   The temperature measuring device for testing an electronic component according to claim 1, wherein the temperature sensor is constituted by a thermocouple.

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