TWI460444B - Dummy battery apparatus - Google Patents

Description

Test power supply unit

The present invention relates to a test power supply device, and more particularly to a test power supply device for providing a portable electronic device with power required during a test.

With the rapid development of the communication industry, electronic devices such as mobile phones and personal digital assistants (PDAs) are becoming more and more popular. After the assembly of the electronic devices, it is generally required to test the performance of some of the components to detect whether the electronic device meets the prescribed standards.

When testing an electronic device, it is usually necessary to maintain power to it. The conventional test method generally uses a battery equipped with an electronic device itself as a test power source. However, the battery of the electronic device itself can only provide a single supply voltage, and various test components in the electronic device often need to input a plurality of test voltages different from each other. If the electronic device has multiple components that need to input different test voltages, such as a RUIM (removable user identity module) card, a SIM (subscriber identity module) card, and other user identification cards and Car- When Kit (vehicle hands-free device) needs to be tested, it is necessary to connect the various components to different specifications of the battery to test, which obviously increases the test cost. In addition, when testing the performance of the user identification card, since the battery installation position of many types of electronic devices, such as mobile phones, often blocks the user identification card behind it, it may be necessary to remove the battery before moving the user identification card. Very no operation It is easy to damage the various components of the battery and the electronic device.

In view of the above, it is necessary to provide a test power supply device that can provide a variable test voltage.

A test power supply device for providing power for testing an electronic device to be tested, wherein the test power supply device is provided with a switching circuit, and the switching circuit includes a first output end and a second output end. a third output end, the first output end, the second output end and the third output end are respectively connected to one of the positive connector terminal, the ID connector terminal and the negative connector terminal of the electronic device to be tested. Correspondingly, the second output terminal can respectively output two different voltages under the control of the switching circuit, which are respectively used to test components of the electronic device to be tested that operate on a conventional battery provided by the conventional battery, and operate on the same A component of a special voltage that cannot be output by a conventional battery.

Compared with the prior art, the test power supply device of the present invention can be applied to test work of various components requiring different test voltages in the electronic device to be tested, thereby effectively reducing the test cost. In addition, the test power supply device does not require extra insertion and removal during the test, and the operation is very simple, and is beneficial for protecting components of the electronic device.

100‧‧‧Test power supply unit

200‧‧‧Electronic device to be tested

10‧‧‧ Pedestal

12‧‧‧ 容面

14‧‧‧ accommodating slots

15‧‧‧ interface

16‧‧‧First through hole

17‧‧‧Second through hole

18‧‧‧Connector

19‧‧‧Switching circuit

30‧‧‧Adjustment device

31‧‧‧Adjustment block

33‧‧‧ Guide column

35‧‧‧Flexible parts

37‧‧‧ screws

182‧‧‧Connecting end

184‧‧‧ID connector

186‧‧‧negative connection

191‧‧‧ first input

192‧‧‧ second input

193‧‧‧ first output

194‧‧‧second output

195‧‧‧ third output

196‧‧‧ indicator light

197‧‧‧ switch

R1‧‧‧first resistance

R2‧‧‧second resistance

R3‧‧‧ third resistor

311‧‧‧ side

312‧‧ ‧ gap

315‧‧‧through holes

317‧‧‧Connecting through holes

20‧‧‧ body

22‧‧‧ 容部

23‧‧‧ side wall

24‧‧‧ escaping

25‧‧‧Electrical connector terminals

27‧‧‧ boards

252‧‧‧Connector terminals

254‧‧‧ID connector terminal

256‧‧‧negative connector terminals

272‧‧‧Test interface

274‧‧‧Rectangular slot

1 is a perspective view of an electronic device to be tested to which a test power supply device according to a preferred embodiment of the present invention is applied.

2 is a perspective view of a power supply device for testing according to a preferred embodiment of the present invention.

3 is a perspective view of the power supply device for testing shown in FIG. 2 from another perspective.

4 is an exploded perspective view of the power supply device for testing shown in FIG. 2.

Fig. 5 is an internal circuit diagram of the power supply unit for testing shown in Fig. 2.

6 is a perspective view showing the power supply device for testing shown in FIG. 2 mounted on an electronic device to be tested.

Referring to FIG. 1 and FIG. 2, a preferred embodiment of the present invention provides a test power supply device 100 for providing power to be tested in an electronic device 200 to be tested. The test power supply device 100 has a first operating mode and a second operating mode. When the test power supply device 100 is in the first operating mode, it outputs a first voltage, such as the battery voltage of the electronic device 200 to be tested. The performance of the commonly used electronic components when testing the electronic device 200 to be tested independently, such as testing a liquid crystal display (LCD), testing whether the electronic device 200 to be tested can read the RUIM (removable user identity module, removable user) Identification module) card or SIM (subscriber identity module) card and other user identification cards. When the test power supply device 100 is in the second operation mode, it outputs a second voltage, such as a battery voltage for the vehicle, for testing the car-kit (car hands-free device) in the electronic device 200 to be tested, and the like. The component performance of the environment.

The electronic device 200 to be tested may be a conventional electronic device such as a mobile phone. Similar to most conventional electronic device structures, the electronic device 200 to be tested includes a body 20, an electrical connector terminal 25, and a circuit board 27. A receiving portion 22 is recessed on a surface of the body 20 for receiving the battery or the test power supply device 100. The accommodating portion 22 has a substantially rectangular shape and has a side wall 23. The side wall 23 defines a substantially rectangular escaping opening 24 through which the escaping opening 24 extends. The electrical connector terminal 25 is disposed on the other side wall opposite to the side wall 23. The electrical connector terminal 25 includes a positive connector terminal 252, an ID (identification or identity) connector terminal 254, and a negative Connector terminal 256. The circuit board 27 The device is electrically connected to the electrical connector terminal 25 by a connecting device such as a FPC (flexible printed circuit). The circuit board 27 is provided with a basic electronic component such as a car-kit, and a test interface 272 and a rectangular slot 274 are disposed on the circuit board 27, and the test interface 272 is electrically connected to the car-kit disposed on the circuit board 27, and the specific Located below the escaping port 24, the test interface 272 is exposed to the outside without being blocked by the test power supply unit 100. The rectangular slot 274 is recessed by the circuit board 27, and a plurality of electrical terminals are disposed therein, and the user identification card or the FPC can be electrically connected to the circuit board 27 by the electrical terminals.

Referring to FIG. 3 together, the test power supply device 100 includes a base 10 and an adjusting device 30. The base 10 is a rectangular body having a receiving surface 12. The receiving surface 12 defines a substantially rectangular receiving groove 14 . The shape of the receiving groove 14 is consistent with the shape of the rectangular groove 274 , and the receiving groove 14 is disposed opposite to the rectangular groove 274 . An interface 15 is formed on one side of the susceptor 10 adjacent to the accommodating surface 12, and the interface 15 can be connected to a DC power source (not shown) by a transmission line such as a cable to provide DC power to the test power supply device 100. . As shown in FIG. 5 , a first through hole 16 and a second through hole 17 are defined in the base 10 opposite to the interface 15 . The first through hole 16 and the second through hole 17 pass through the base 10 . An indicator light 196 and a switch 197 are respectively accommodated. A connector 18 is defined on one side of the base 10 adjacent to the interface 15 and the first through hole 16. The connector 18 can be a spring piece made of a conductive elastic material. The connector 18 includes a positive connection end 182, an ID connection end 184 and a negative connection end 186. The positive connection end 182, the ID connection end 184 and the negative connection end 186 are in one-to-one correspondence with the positive connector terminal 252, the ID connector terminal 254 and the negative connector terminal 256, respectively. When the connector 18 is electrically connected to the electrical connector terminal 25, the connector 18 is electrically connected to the circuit board 27, and the positive connection terminal 182 provides a normal operating voltage for the circuit board 27, the negative The connection end 186 is electrically connected to a ground end (not shown) of the circuit board 27, and the ID is The connection terminal 184 is a test component that is electrically connected to the circuit board 27, such as a user identification card and a Car-Kit.

The adjusting device 30 is used to adjust the length of the test power supply device 100 to make the test power supply device 100 suitable for the electronic device 200 to be tested of different sizes. Referring to FIG. 4 together, the adjusting device 30 includes an adjusting block 31, two guiding columns 33 and an elastic member 35. The adjusting block 31 has a rectangular shape and has a side 311. The side 311 defines a notch 312. The notch 312 penetrates the upper and lower surfaces of the adjusting block 31 and corresponds to the avoiding opening 24. The other side opposite to the side 311 is provided with two through holes 315 and a connecting through hole 317 , and the connecting through holes 317 are disposed between the two through holes 315 . One ends of the two guiding columns 33 are respectively fixed to the base 10, and the other ends are respectively passed through the two through holes 315. The elastic member 35 is a columnar coil spring that is sleeved on a screw 37 that passes through the connecting through hole 317 and is fixed to the base 10. When the screw 37 is rotated, the elastic member 35 is deformed, so that the adjusting block 31 is slid to a predetermined position by the mutual engagement of the two through holes 315 and the guide post 33. This makes it possible to adjust the length of the test power supply unit 100 so that the test power supply unit 100 can be applied to a plurality of electronic devices of different sizes.

A switching circuit 19 is also disposed in the susceptor 10 for providing two different test voltages for the circuit board 27. Referring to FIG. 5, the switching circuit 19 includes a first input terminal 191, a second input terminal 192, a first output terminal 193, a second output terminal 194, a third output terminal 195, and the indicator light. 196. The switch 197, a first resistor R1, a second resistor R2, and a third resistor R3. The indicator light 196 is a light emitting diode for displaying the power supply state of the external DC power source. The indicator light 196 passes through the first through hole 16 and is exposed from the surface of the base 10 . The switch 197 is a single pole double throw switch for selecting a test power supply. Set 100 different test modes. The switch 197 passes through the second through hole 17 and is exposed from the surface where the indicator light 196 is located. In the switching circuit 19 , the first input end 191 is electrically connected to the first output end 193 . The second input 192 is connected to the moving contact of the switch 197 and is simultaneously grounded. The two static contacts of the switch 197 are respectively connected to one end of the first resistor R1 and one end of the second resistor R2. The other ends of the first resistor R1 and the second resistor R2 are both connected to the second output terminal 194. Thus, switch 197 can be used to select first resistor R1 or second resistor R2 to establish an electrical connection between second input terminal 192 and second output terminal 194. The third resistor R3 is connected at one end to the first input end 191 and the first output end 193, and the other end is connected to the anode of the indicator light 196. The cathode of the indicator light 196 is connected between the movable contact of the switch 197 and the second input terminal 192, and the third output terminal 195 is grounded. In addition, the first input end 191 is electrically connected to the interface 15 , the first output end 193 is electrically connected to the positive connection end 182 , and the second output end 194 is electrically connected to the ID connection end 186 . The third output end 195 is electrically connected to the negative connection end 184. In the preferred embodiment of the present invention, when the second output terminal 194 is connected to the second input terminal 192 by the first resistor R1 and the switch 197, the test power supply device 100 is in the first working mode; When the two output terminals 194 are connected to the second input terminal 192 by the second resistor R2 and the switch 197, the test power supply device 100 is in the second operation mode. The first resistor R1 and the second resistor R2 have different resistance values, so that the two modes can respectively output different voltages from the second output terminal 194 to respectively apply to tests of different types of components requiring different test voltages.

When the test power supply device 100 is used to test whether the electronic device 200 to be tested can read the user identification card, an FPC (not shown) is first provided, and one end of the FPC is placed in the rectangular slot 274, by using The electrical terminal is electrically connected to the circuit board 27; then the connecting end 18 is respectively aligned with the corresponding connector terminal 25 to electrically connect the connecting end 18 with the circuit board 27 and provide the required power supply. Voltage or test voltage Rotating the screw 37 to adjust the length of the test power supply device 100 so as to be accommodated in the accommodating portion 22, and the test power supply device 100 is pressed against one end of the FPC, and the other end of the FPC is exposed Fixing the user identification card in the FPC and exposing it to the outer end to electrically connect the user identification card to the circuit board 27 by using the FPC; electrically connecting the interface 15 with a conventional external DC power source to start The second output terminal 194 is electrically connected to the switch 197 by the first resistor R1, that is, the first working mode of the test power supply device 100 is selected, so that the second output terminal 194 and the ID are connected. The terminal 184 outputs the first voltage; and observes whether the conventional display screen of the electronic device 200 to be tested has read the user identification card.

When the test power supply device 100 is used to test the performance of the car-kit, the user identification card is first removed, and a car-kit connector (not shown) is placed in the accommodating cavity formed by the escaping port 24 and the notch 312. The test interface 272 is electrically connected to the test interface 272 and electrically connected to the car-kit disposed on the circuit board 27 by the test interface 272; then the second output terminal 194 is electrically connected by the second resistor R2. Connected to the switch 197, that is, select the second mode of operation of the test power supply device 100, so that the second output terminal 194 and the ID connection terminal 184 output the second voltage; finally, the parameter of the car-kit is transmitted by using a transmission line. Test the performance of the car-kit on a test instrument.

Obviously, the test power supply device 100 of the present invention has multiple working modes, and can be applied to a plurality of different test modes of the electronic device 200 to be tested, thereby effectively reducing the test cost. Moreover, the electronic device 200 to be tested can conveniently select various test modes, and the operation is very simple.

Various modifications, additions and substitutions in other forms and details may be made by those skilled in the art in the scope and spirit of the invention. Of course, various modifications, additions and substitutions made in accordance with the spirit of the present invention are intended to be included in the present invention. Seek protection within the scope.

100‧‧‧Test power supply unit

10‧‧‧ Pedestal

12‧‧‧ 容面

14‧‧‧ accommodating slots

15‧‧‧ interface

18‧‧‧Connector

30‧‧‧Adjustment device

33‧‧‧ Guide column

182‧‧‧Connecting end

184‧‧‧ID connector

186‧‧‧negative connection

312‧‧ ‧ gap

Claims (9)

A test power supply device for providing power for testing an electronic device to be tested, wherein the test power supply device is provided with a switching circuit, and the switching circuit includes a first output end and a a second output end, a third output end, a first resistor, a second resistor, and a switch, wherein the first output end, the second output end, and the third output end are respectively associated with one of the electronic devices to be tested a positive connector terminal, an ID connector terminal and a negative connector terminal are in one-to-one correspondence, the movable contact of the switch is grounded; two static contacts of the switch are respectively connected to the first resistor and the second resistor One end, the other end of the first resistor and the second resistor are both connected to the second output end, and the second output end respectively outputs two different voltages by switching the switches, which are respectively used for testing the The component of the electronic device to be tested that operates on the conventional voltage provided by the conventional battery and the component that operates on a special voltage that the conventional battery cannot output. The test power supply device of claim 1, wherein the test power supply device comprises a base, the base includes a receiving surface, and the receiving surface is provided with a receiving groove. The test power supply device of claim 2, wherein an interface is formed on one side of the pedestal adjacent to the accommodating slot, and the interface is electrically connected to an external DC power supply. The power supply device for testing according to the third aspect of the invention, wherein the test power supply device has a connector on a side adjacent to the interface, the connector including a positive connection end and a negative connection End and an ID connection. The test power supply device of claim 4, wherein the switching circuit further includes a first input end and a second input end, wherein the first input end is electrically connected to the interface, The second input end is grounded, the first output end is electrically connected to the positive connection end, the second output end is electrically connected to the ID connection end, and the third output end is electrically connected to the negative connection end connection. The test power supply device of claim 5, wherein the switching circuit further includes a third resistor and a diode, and the third resistor is connected to the first input end and the first output end. The other end is connected to the anode of the diode, and the cathode of the diode and the third output are both connected to the movable contact of the switch. The test power supply device of claim 5, wherein the second output terminal is connected to the second input terminal by the first resistor and the switch A resistor and the second input form a circuit for causing the second output to output the conventional voltage. The test power supply device of claim 5, wherein the second output terminal and the second resistor are connected to the second input terminal by the second resistor and the switch And forming a circuit with the second input terminal to cause the second output terminal to output the special voltage. The test power supply device of claim 1, wherein the test power supply device further comprises an adjustment device that adjusts an overall length of the test power supply device.