KR20220132860A - 2-Channel Protection Circuit Module of Secondary Battery Tester - Google Patents

Abstract

A protection circuit module tester of a two-channel secondary battery is provided. The protection circuit module tester of a two-channel secondary battery may include: a body containing a small computer; a jig which is provided on the upper part of the body and on which two test samples are seated; a pressing member which presses the test sample seated on the jig from the top of the jig; an operation panel provided on the front of the body to perform tests on two test samples and to show the results; and a calibration board connected to a small computer built into the body through a cable to provide reference values so that calibration can be performed by the small computer.

Description

2-Channel Protection Circuit Module of Secondary Battery Tester

The present invention relates to a two-channel secondary battery protection circuit module inspector, and more specifically, a two-channel two-channel secondary battery that can quickly and stably inspect the electrical performance of two protection circuit modules to verify the secondary battery's protection circuit. It relates to a secondary battery protection circuit module tester.

In recent years, the demand for portable electronic products such as notebooks, video cameras, and portable telephones has rapidly increased, and the development of electric vehicles, energy storage batteries, robots, satellites, etc. is in full swing. Accordingly, studies related to high-performance secondary batteries capable of repeatedly charging and discharging are being actively conducted.

Currently commercialized secondary batteries include nickel-cadmium (Ni-Cd) batteries, nickel-metal hydride (Ni-MH) batteries, nickel-zinc (Ni-Zn) batteries, and lithium (Li) secondary batteries. Among them, lithium secondary batteries are in the spotlight for their advantages of being free to charge and discharge, have very low self-discharge rates, and have high energy density because they do not have a memory effect compared to nickel-based secondary batteries. have.

These lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery is an exterior material for sealingly accommodating an electrode assembly and an electrode assembly in which a positive electrode plate and a negative electrode plate to which the positive electrode active material and the negative electrode active material are respectively applied with a separator interposed therebetween, that is, a battery case. to provide

In general, the performance of the secondary battery may be degraded according to the temperature, and in particular, when the temperature is increased, there is a risk of heat generation and explosion. Moreover, since various combustible materials are embedded inside the secondary battery, heat or explosion of the secondary battery may cause ignition or explosion of other external components, which may result in damage to life and property.

In addition, when the secondary battery is overcharged or overdischarged, the performance may be deteriorated to such an extent that it is difficult to use any more.

Therefore, research to develop a protection circuit module (PCM) for protecting the secondary battery from problems caused by temperature change, overcharging, and overdischarging is being actively conducted.

However, as the performance of the protection circuit module and the circuit configuration itself are advanced along with the development of secondary battery performance, the need to verify not only the secondary battery but also the protection circuit module is emerging.

The problem to be solved by the present invention is a protection circuit of a two-channel (2-Channel: 2-Ch.) secondary battery having an automatic calibration system that can easily and quickly process a calibration (Calibration: Cal) process It is intended to provide a module checker.

Another object to be solved by the present invention is to provide a protection circuit module inspector for a two-channel secondary battery capable of quickly and stably inspecting the electrical performance of two protection circuit modules.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides a protection circuit module tester of a two-channel secondary battery. This 2-channel secondary battery protection circuit module tester includes a body containing a small computer, a jig provided on the upper part of the body to seat two test samples, a pressing member that presses the test sample seated on the jig from the top of the jig, and a body It is provided on the front side of the front panel to perform the tests on two test samples, and the operation panel for showing the results and the small computer built into the body are connected through a cable to set the reference value so that calibration can be performed by the small computer. It may include a calibration board to provide.

The jig includes a jig base coupled to the upper portion of the body, two printed circuit boards for inspection that are provided on the jig base and electrically connected to two test samples, respectively, and a jig base while providing a space in which the two test samples are seated. It may include a plurality of springs provided between the seating base and the jig base and the seating base coupled to the upper portion of the jig to lower and elevate the seating base according to the pressing and releasing of the pressing member.

The two-channel secondary battery protection circuit module tester may include two power supply modules provided on the upper portion of the body in front of the jig to supply voltage and current for individual test to the test sample.

The operation panel includes two start buttons for performing a test on the test sample, a cancel button for canceling the test, two voltmeters displaying voltage values for each of the two test samples, and a test result for the test sample It may include a display unit showing the.

The calibration board includes a channel control circuit for controlling channels connected to each of the two test samples, a reference resistance providing a reference resistance value, a reference voltage generating circuit providing a reference voltage value, and a reference current generation providing a reference current value. It may include a circuit, a monitoring circuit for monitoring the voltage and current values measured for the test sample, and a terminal unit connected to a cable for connecting to a small computer built into the body.

As described above, according to the solution to the problem of the present invention, the calibration board (BoarD) that provides a reference value so that the calibration can be performed by the small computer and connected through a cable (cable) with a small computer built into the body (BoarD) : B/D), the calibration process can be made automatically by the automatic calibration system of the small computer built into the body. Accordingly, it is possible to provide a protection circuit module checker for a two-channel secondary battery that can be quickly processed with a simple calibration process.

In addition, according to a solution to the problem of the present invention, it is provided between the seating base and the seating base coupled to the upper part of the jig base and the jig base and the seating base while providing a space in which the two test samples are seated to press the pressing member and By including a jig including a plurality of springs for lowering and elevating the seating base according to the release, the test on the test sample can be quickly and stably performed. Accordingly, a protection circuit module tester of a two-channel secondary battery capable of quickly and stably inspecting the electrical performance of the two protection circuit modules may be provided.

1 is a three-dimensional configuration diagram for explaining a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
2 is a block flow diagram illustrating a method of inspecting a test sample using a protective circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
3 is a front view for explaining a control panel (panel) as one configuration of the protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
4 is a three-dimensional configuration diagram for explaining a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
5 is a block flow diagram illustrating a calibration method of a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
6 and 7 are three-dimensional configuration diagrams for explaining a jig, which is a configuration of a protective circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
8 is a plan view for explaining a jig, which is one configuration of a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.
9 is an enlarged plan view of part A of FIG. 8 in order to explain a jig, which is a configuration of a protection circuit module tester for a two-channel secondary battery according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and a method of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein, and may be embodied in different forms. Rather, the embodiments introduced herein are provided so that this disclosure may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art, and the present invention is only defined by the scope of the claims.

Like reference numerals refer to like elements throughout the specification. Accordingly, the same or similar reference signs may be described with reference to other drawings, even if not mentioned or described in the corresponding drawings. In addition, although reference numerals are not indicated, descriptions may be made with reference to other drawings.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, 'comprises' and/or 'comprising' refers to the presence of one or more other components, steps, operations and/or devices mentioned. or addition is not excluded. In addition, since it is according to a preferred embodiment, reference signs provided in the order of description are not necessarily limited to the order.

When an element is referred to as 'connected to' or 'coupled to' with another element, it means that another element is directly connected or coupled to another element or in the middle. Includes all cases involving On the other hand, when one component is referred to as 'directly connected to' or 'directly coupled to' with another component, it indicates that other components are not interposed therebetween. 'and/or' includes each and every combination of one or more of the recited items.

Spatially relative terms 'below', 'beneath', 'lower', 'above', 'upper', etc. It can be used to easily describe a device or component's correlation with another device or component. Spatially relative terms should be understood as terms including different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device shown in the figure is turned over, a device described as 'beneath' or 'beneath' of another device may be placed 'above' of the other device. Accordingly, the exemplary term 'below' may include both the downward and upward directions. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Further, the embodiments described herein will be described with reference to cross-sectional and/or plan views, which are ideal illustrative views of the present invention. In the drawings, thicknesses of films and regions are exaggerated for effective description of technical content. Accordingly, the shape of the illustrative drawing may be modified due to manufacturing technology and/or tolerance. Accordingly, the embodiments of the present invention are not limited to the specific form shown, but also include changes in the form generated according to the manufacturing process. Accordingly, the regions illustrated in the drawings have a schematic nature, and the shapes of the illustrated regions in the drawings are intended to illustrate specific shapes of regions of the device and not to limit the scope of the invention.

1 is a three-dimensional configuration diagram for explaining a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.

Referring to FIG. 1 , the protective circuit module tester 100 of the two-channel secondary battery includes a body 110 containing a small computer, and two test samples (see 400 in FIG. 6 ) provided on the body 110 . ) on which the jig 120 is seated, the pressing member 134 that presses the test sample seated on the jig 120 from above the jig 120, is provided on the front of the body 110 to test two test samples It is connected through a cable 300 with a small computer built into the operating panel (see FIG. 3) and the body 110 for performing and providing a reference value so that calibration can be performed by the small computer. A calibration board (see 200 in FIG. 4 ) may be included.

The protective circuit module tester 100 of a two-channel secondary battery according to an embodiment of the present invention embeds a small computer capable of controlling the test work in the body 110, so that miniaturization can be realized and the convenience of the test work can provide Accordingly, the protection circuit module tester 100 of the two-channel secondary battery according to an embodiment of the present invention can implement a small size and low cost suitable for a production environment to which a surface mount technology (SMT) is applied. .

In addition, the protective circuit module tester 100 of the two-channel secondary battery according to an embodiment of the present invention is provided on the upper portion of the body 110 in front of the jig 120, the voltage and It may include two power supply modules 140-1 and 140-2 for passing a current. Accordingly, the protection circuit module tester 100 of the two-channel secondary battery according to an embodiment of the present invention may individually test the test sample with different input values for each of the two channels.

The pressing member 134 may stably press the test sample seated on the jig 120 by driving a cylinder.

2 is a block flow diagram illustrating a method of inspecting a test sample using a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.

Referring to FIG. 2 , a test sample (see FIG. 6 ) seated on a jig (see 120 in FIG. 1 ) using a protection circuit module tester (see 100 in FIG. 1 ) of a two-channel secondary battery according to an embodiment of the present invention. 400 of ), the inspection of the circuit parts (In-Circuit Test) is performed (S110), the function test is performed on the protection circuit module (S120), and whether the test sample is normal ( OK / NG) may include determining (S130).

Performing the function test on the protection circuit module (S120) is measuring the internal resistance (S122), measuring the current consumption (S124), performing the overvoltage test (S126), performing the overcurrent test (S128) ) and changing the circuit of the protection circuit module (S129).

Here, changing the circuit of the protection circuit module ( S129 ) may be performed when the protection circuit of the protection circuit module is dually configured. That is, when the protection circuit of the protection circuit module is single, the process of changing the circuit of the protection circuit module ( S129 ) may be omitted.

After inspecting the first protection circuit among the double circuits of the protection circuit module by changing the circuit of the protection circuit module (S129), performing an overvoltage test (S126) to check the second protection circuit and overcurrent inspection Performing (S128) is performed again, and when a change to the circuit of the protection circuit module is not required, it can be moved to determining whether the test sample is normal (S130).

3 is a front view for explaining an operation panel that is one configuration of a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.

Referring to FIG. 3 , the operation panel of the protection circuit module tester (see 100 in FIG. 1 ) of the two-channel secondary battery according to an embodiment of the present invention performs an inspection on a test sample (see 400 in FIG. 6 ). two start buttons 162 and 164 for, a cancel button 166 for canceling the test, and two voltmeters 170-1 and 170- for displaying voltage values for each of the two test samples. 2) and a display unit 150 that displays the test results for the test sample.

Starting the two test samples of the protective circuit module tester of the 2-channel secondary battery can be made by simultaneously pressing the first start button 162 and the second start button 164, and stopping the test in the test process This can be done by pressing the cancel button 166 .

In addition, performing a step mode test on the test sample with the protection circuit module tester of the two-channel secondary battery may be performed by simultaneously pressing the second start button 164 and the cancel button 166 . Accordingly, the protective circuit module tester of the two-channel secondary battery according to an embodiment of the present invention may automatically and manually test the test sample.

The first and second voltmeters 170 - 1 and 170 - 2 may display voltage values for the test sample seated in the channel 1 ( Ch1 ) and the channel 2 ( Ch2 ), respectively.

4 is a three-dimensional configuration diagram for explaining a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.

Referring to Figure 4, the two-channel protection circuit module checker 100 is connected to a small computer built in the body (see 110 in Fig. 1) through a cable 300, the reference value so that the calibration can be performed by the small computer. It may include a calibration board 200 to provide.

The calibration board 200 includes a channel control circuit 210 for controlling channels connected to two test samples (see 400 of FIG. 6 ), a reference resistor 220 providing a reference resistance value, and a reference voltage value. A reference voltage generating circuit 230 providing a reference current value, a reference current generating circuit 240 providing a reference current value, a monitoring circuit 250 monitoring a voltage value and a current value measured with respect to the test sample, and a built-in body It may include a terminal unit 260 connected to the cable 300 for connection with a small computer.

The protection circuit module checker 100 of the two-channel secondary battery according to an embodiment of the present invention is automatically performed by the small computer by connecting the calibration board 200 with the small computer built into the body through the cable 300. calibration can be performed.

5 is a block flow diagram illustrating a calibration method of a protection circuit module tester of a two-channel secondary battery according to an embodiment of the present invention.

Referring to FIG. 5, the calibration method of the 2-channel secondary battery's protection circuit module checker (see 100 in FIG. 4) is a miniaturization of the reference resistance value, the reference voltage value, and the reference current value from the calibration board (see 200 of FIG. 4). Reading from the computer and measuring (S210), correcting the difference between the value measured by the small computer and the reference value of the calibration board in the small computer (S220), the initial reference voltage value and the initial reference current of each inspection process in the small computer Setting the value (S230) and monitoring in the monitoring circuit (see 250 of FIG. 4) of the calibration board may include correcting the difference between the measured value and the initial reference value in a small computer (S240).

Since the calibration method of the 2-channel secondary battery protection circuit module checker according to an embodiment of the present invention is calibrated by an automatic calibration system of a small computer built into the body using a calibration board, the calibration process is simple and quick can be processed.

6 and 7 are three-dimensional configuration diagrams for explaining a jig, which is a configuration of a protective circuit module tester of a two-channel secondary battery according to an embodiment of the present invention, and FIG. 8 is a 2 It is a plan view for explaining a jig that is one configuration of the protection circuit module tester of the channel secondary battery, and FIG. 9 is a jig that is a configuration of the protective circuit module tester of the two channel secondary battery according to an embodiment of the present invention 8 is an enlarged plan view of part A of FIG.

6 to 9, the jig 120 of the protective circuit module tester (see 100 in FIG. 1) of a two-channel secondary battery according to an embodiment of the present invention is the upper part of the body (refer to 110 in FIG. 1) The jig base 122 coupled to the jig base 122 and provided on the jig base 122 and electrically connected to the two test samples 400, respectively, two test printed circuit boards 124, two test samples ( 400) is provided between the seating base 126 and the jig base 122 and the seating base 126 coupled to the upper portion of the jig base 122 while providing a seating space of the pressing member (see 134 in FIG. 1) of It may include a plurality of springs 128 for lowering and elevating the seating base 126 according to the pressing and releasing.

That is, the terminals (not shown) of the test sample 400 are seated on the seating base 126 by pressing the pressing member with probe pins (not shown) of the test printed circuit board 124 . ) and interlocked with each other to be electrically stably connected, so that the test for the test sample 400 can be stably performed. And since the terminals of the test sample 400 can be separated from the probe pins of the printed circuit board 124 by the mounting base 126 is raised by the springs 128 by the release of the pressing member, the operator The test sample 400 can be easily removed from the jig 120 .

As shown in FIG. 9 , the seating base 126 may be designed to provide a seating space so that the test sample 400 can be stably seated while the operator can easily take out the test sample 400 .

The protection circuit module checker of the two-channel secondary battery according to an embodiment of the present invention is connected through a cable with a small computer built into the body and includes a calibration board that provides a reference value so that the calibration can be performed by the small computer. , the calibration process can be made automatically by the automatic calibration system of a small computer built into the body. Accordingly, it is possible to provide a protection circuit module checker for a two-channel secondary battery that can be quickly processed with a simple calibration process.

In addition, in an embodiment of the present invention, the protective circuit module tester of the two-channel secondary battery is provided between the seating base and the jig base and the seating base coupled to the upper part of the jig base while providing a space for two test samples to be seated. By including a jig including a plurality of springs for lowering and elevating the seating base according to the pressing and releasing of the pressing member, the inspection of the test sample can be performed quickly and stably. Accordingly, a protection circuit module tester of a two-channel secondary battery capable of quickly and stably inspecting the electrical performance of the two protection circuit modules may be provided.

Above, embodiments of the present invention have been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can practice the present invention in other specific forms without changing the technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: 2-channel secondary battery protection circuit checker
110: body
120: jig
122: jig base
124: printed circuit board for inspection
126: seating base
128: spring
134: press absence
140-1, 140-2: first and second power supply modules
150: display
162, 164: first and second start buttons
166: abort button
170-1, 170-2: first and second voltmeters
200: calibration board
210: channel control circuit
220: reference resistance
230: reference voltage generating circuit
240: reference current generation circuit
250: monitoring circuit
260: terminal
300: cable
400: test sample

Claims (5)

a body housing a small computer;
a jig provided on the upper portion of the body on which two test samples are seated;
a pressing member pressing the test sample seated on the jig above the jig;
an operation panel provided on the front surface of the body to perform a test on the two test samples, and to show a result; and
A two-channel secondary battery protection circuit module tester including a calibration board connected to the small computer built into the body through a cable and providing a reference value so that the small computer can perform calibration. The method of claim 1,
The jig is:
a jig base coupled to the upper portion of the body;
two test printed circuit boards provided on the jig base and electrically connected to the two test samples, respectively;
a seating base coupled to an upper portion of the jig base while providing a space in which the two test samples are seated; and
A two-channel secondary battery protection circuit module inspector comprising a plurality of springs provided between the jig base and the seating base to lower and elevate the seating base according to the pressing and releasing of the pressing member. The method of claim 1,
A protection circuit module tester of a two-channel secondary battery provided on the upper portion of the body in front of the jig and including two power supply modules for supplying voltage and current for individual inspection to the test sample. The method of claim 1,
The operation panel includes:
two start buttons for performing a test on the test sample;
Cancel button to cancel the test;
two voltmeters for displaying voltage values for each of the two test samples; and
A protection circuit module tester for a two-channel secondary battery including a display unit for showing test results for the test sample. The method of claim 1,
The calibration board includes:
a channel control circuit for controlling channels respectively connected to the two test samples;
a reference resistor providing a reference resistance value;
a reference voltage generating circuit for providing a reference voltage value;
a reference current generating circuit for providing a reference current value;
a monitoring circuit for monitoring the voltage and current values measured for the test sample; and
A two-channel secondary battery protection circuit module tester including a terminal part connected to the cable for connection with the small computer built into the body.

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