CN209821784U - Electronic device with overcurrent protection - Google Patents
Electronic device with overcurrent protection Download PDFInfo
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- CN209821784U CN209821784U CN201920493749.2U CN201920493749U CN209821784U CN 209821784 U CN209821784 U CN 209821784U CN 201920493749 U CN201920493749 U CN 201920493749U CN 209821784 U CN209821784 U CN 209821784U
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Abstract
The utility model provides an electron device with overcurrent protection. The electronic device comprises an electronic module, a power supply module and a protection module, wherein the electronic module comprises a plurality of electronic components, each electronic component has a maximum rated current value, the protection module comprises a plurality of overcurrent protection components, and each overcurrent protection component has a preset current value. When any overcurrent protection component receives a current value larger than a preset current value, the overcurrent protection component is switched to an open circuit state, so that the condition that a flat cable of the electronic device is burnt due to overlarge fault current is avoided.
Description
Technical Field
The present invention relates to an electronic device, and more particularly to an electronic device with overcurrent protection, which can prevent a flat cable of the electronic device from being burned due to an excessive fault current.
Background
Before the development of all design specifications of the main board, how many flat cables need to be designed for support are planned. Since the flat cables are built in the machine and must be assembled, it is impossible for users to disassemble or replace the flat cables, such as the lcd, the flat cable of the camera, the flat cable of the microphone, the flat cable of the touch screen, etc.
Most of the current video-related flat cable designs are disposed around the periphery of the lcd. Furthermore, these flat cables are completed after the assembly process, and cannot be completed completely in an automated manner. However, during the assembling process, the result of poor assembling may be caused by human carelessness or improper operation. For example, when the flat cable is assembled poorly, the current flowing in the flat cable may be too high and the temperature may be too high, which may cause burning. Therefore, how to provide a protection function in real time when the current is abnormally excessive is a key point for the problem and solution of the present application.
SUMMERY OF THE UTILITY MODEL
In view of this, an embodiment of the present invention provides an electronic device with overcurrent protection, including: electronic module, power module and protection module. The electronic module includes a plurality of electronic components, each having a maximum current rating. The power module provides power to the electronic component. The protection module is electrically connected to the power module, and includes a plurality of overcurrent protection components respectively electrically connected to the electronic components, wherein each overcurrent protection component has a preset current value, the preset current value of the overcurrent protection component is respectively greater than the maximum rated current value of the corresponding electronic component, and any one of the overcurrent protection components is switched to an open circuit state when the received current value is greater than the preset current value.
In an embodiment of the present invention, the electronic device with over-current protection further includes: a connector and a plurality of connecting wires. The connector is electrically connected to the protection module. The plurality of connecting wires respectively correspond to the electronic assemblies, wherein one end of each connecting wire is electrically connected to the connector, and the other end of each connecting wire is electrically connected to the corresponding electronic assembly.
In an embodiment of the present invention, one end of each connecting line has a front end connector, and the other end of each connecting line has a rear end connector.
In an embodiment of the present invention, the electronic device with over-current protection further includes: the device comprises a detection module, a control module and a warning module. The detection module comprises a plurality of open circuit detection components which are respectively and electrically connected with the over-current protection components and respectively provide a detection signal. The control module is electrically connected to the detection module. The control module judges whether the over-current protection component is in an open circuit state according to the detection signal provided by the open circuit detection component, and when one of the over-current protection components is in the open circuit state, the control module generates a corresponding warning signal to the warning module to enable the warning module to actuate.
In an embodiment of the present invention, the electronic device with over-current protection further includes: a first body and a second body. The second body is provided with a main board and is pivoted with the first body, wherein the electronic module is arranged in the first body, and the power module, the protection module and the connector are arranged on the main board.
The embodiment of the utility model provides an electronic device with overcurrent protection through dispose a protection module that has a plurality of overcurrent protection subassemblies between supply end and power receiving end to through setting for one for each overcurrent protection subassembly and predetermine the current value, this is predetermine the maximum rated current value that the current value is greater than the electronic component of power receiving end. When the current of the electronic device is abnormal, the current flowing through the electronic component of the power receiving end exceeds the preset current value of the overcurrent protection component, and the overcurrent protection component is triggered to be started to be switched into the open circuit state so as to stop supplying power to the power receiving end, so that the damage to the electronic device caused by overlarge fault current is effectively prevented, and the protection effect is played in real time.
The details of other functions and embodiments of the present invention are described below with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block diagram of an electronic device with over-current protection according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal block of the electronic device with over-current protection according to the embodiment of the present invention shown in fig. 1;
fig. 3 is a conceptual diagram of current setting according to an embodiment of the present invention;
fig. 4 is a schematic application diagram of an electronic device with over-current protection according to an embodiment of the present invention.
Description of the symbols
1: electronic device with overcurrent protection 10: electronic module
10-1 to 10-N: the electronic component 11: power supply module
12: protection modules 12-1 to 12-N: overcurrent protection assembly
13: the connector 14: connecting wire
14-1 to 14-N: connecting wire 15: detecting module
15-1 to 15-N: the disconnection detecting element 16: control module
17: the warning module 18: first body
19: the second body 191: main board
Detailed Description
The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings.
The embodiment of the utility model provides an electronic device with overcurrent protection, it can be applied to such as desktop computer, notebook computer, panel computer, display or other inside electronic product that uses the wire rod. The embodiment of the utility model provides a dispose a protection module who has the overcurrent protection subassembly between feeder ear and power receiving end to for overcurrent protection subassembly sets for one and predetermines the current value, just predetermine the maximum rated current value that the current value is greater than the electronic component of power receiving end. When the current flowing through the electronic assembly at the power receiving end exceeds the preset current value of the overcurrent protection assembly, the protection module is switched to the open circuit state to stop supplying power to the power receiving end, so that the condition that a flat cable of the electronic device is burnt due to overlarge current is avoided, or other assemblies and mechanism shells of the electronic device are prevented from being damaged or deformed due to continuous heating.
Referring to fig. 1 to fig. 3, fig. 1 is a block diagram illustrating an electronic device with over-current protection according to an embodiment of the present invention. Fig. 2 is a schematic diagram of an internal block diagram of the electronic device with overcurrent protection according to the embodiment of the invention shown in fig. 1. Fig. 3 is a conceptual diagram of current setting according to an embodiment of the present invention. As shown in fig. 1, an electronic device 1 with overcurrent protection includes: electronic module 10, power module 11, protection module 12. Generally, the power module 11 mainly serves as a power supply terminal to supply power to the electronic module 10 serving as a power receiving terminal (or a load terminal). The protection module 12 serves as a protection terminal between the power supply terminal and the power receiving terminal to protect the components related to the power receiving terminal or the outer frame of the electronic device 1. For example, when a short-circuit fault occurs in the circuit, or an abnormal load increases, or the insulation level decreases (e.g., a flat cable is damaged), the current suddenly increases, and the voltage suddenly decreases. The protection module 12 is to cut off the faulty line when the fault current (i.e. short circuit current) in the line reaches the action value of the current protection component.
As shown in FIG. 2, the electronic module 10 includes a plurality of electronic components 10-1 through 10-N, each of the electronic components 10-1 through 10-N having a maximum rated current value. The plurality of electronic components 10-1 to 10-N include a camera, a microphone, a display screen, and a backlight module. For example, the electronic component 10-1 may be a camera, the maximum rated current thereof is 1A, the electronic component 10-2 may be a microphone, the maximum rated current thereof is 100mA, the electronic component 10-3 (not shown) may be a display screen, the maximum rated current thereof is 5.6A, the electronic component 10-4 (not shown) may be a backlight module of a display, the maximum rated current thereof is 2A, the electronic component 10-5 (not shown) may be a speaker, and the maximum rated current thereof is 100 mA. Generally, for an electronic device to which a rated voltage/rated current is input from a power supply, a system should be operated in an optimal state in principle. Therefore, when the power input is below the maximum rated current, it is ensured that the system should operate in a normal operation region. Conversely, when the power input exceeds the maximum rated current, the system will operate in an abnormal operating region, which, if severe, may cause the system to crash. However, in practice, the system will still function properly if the maximum rated current is only exceeded. As shown in FIG. 3, the maximum rated current is the maximum current input that can be accepted by the electronic components 10-1 to 10-N to ensure that the system is operating in the normal operating region.
The power module 11 supplies power to the plurality of electronic components 10-1 to 10-N. Generally, the power module 11 refers to a circuit capable of providing multiple sets of dc power, for example, 19.5V is a rated voltage required for providing the backlight module, 5V is a rated voltage required for providing the touch screen, and 3.3V is a rated voltage required for providing the camera.
The protection module 12 is electrically connected to the power module 11, and the protection module 12 includes a plurality of over-current protection components 12-1 to 12-N electrically connected to the plurality of electronic components 10-1 to 10-N, respectively. Generally, the overcurrent protection devices 12-1 to 12-N are various types, such as Fuse (Fuse), Power Switch (eFuse/Power Switch), and Positive Temperature Coefficient (PTC) Thermistor (Thermistor), which can be used as the overcurrent protection device. It should be noted that the overcurrent protection components 12-1 to 12-N may all be of the same type, such as fuses. Or two different kinds are used, for example, part of the fuse is used, and the rest part of the fuse is used with the power protection switch. Or three different types are used, for example, part of the fuse is used, part of the positive temperature coefficient thermistor is used, and the rest part of the power protection switch is used.
More specifically, each of the over-current protection devices 12-1 to 12-N has a predetermined current value. As described above, the overcurrent protection components 12-1 to 12-N are mainly used to prevent the flat cable of the electronic device 1 from being burned out when the fault current (i.e. short-circuit current) in the line is too large, or prevent other components and mechanism housings of the electronic device 1 from being damaged or deformed due to continuous heating. In the present embodiment, as shown in fig. 3, the predetermined current value of each of the overcurrent protection components 12-1 to 12-N is slightly larger than the maximum rated current value of each of the corresponding electronic components 10-1 to 10-N, for example, larger than 10%. For example, assuming that the maximum rated current value is 1A, the preset current value may be set to 1.1A. By analogy, the preset current values of the overcurrent protection components 12-1 to 12-N are respectively greater than the maximum rated current values of the corresponding electronic components 10-1 to 10-N, and any one of the overcurrent protection components 12-1 to 12-N is switched to an open-circuit state when the received current value is greater than the preset current value. In other words, when the current flowing through any one of the electronic components 10-1 to 10-N at the power receiving end exceeds the preset current value of the corresponding overcurrent protection component 12-1 to 12-N, the corresponding overcurrent protection component 12-1 to 12-N is switched to the open circuit state to stop supplying power to the corresponding electronic component 10-1 to 10-N at the power receiving end.
In addition, the electronic device 1 with overcurrent protection of the embodiment may further include a connector 13 and a plurality of connecting wires 14. The connector 13 is electrically connected to the protection module 12. The plurality of connection lines 14-1 to 14-N respectively correspond to the plurality of electronic components 10-1 to 10-N, wherein one end of each of the connection lines 14-1 to 14-N is electrically connected to the connector 13, and the other ends of the plurality of connection lines 14-1 to 14-N are respectively electrically connected to the corresponding plurality of electronic components 10-1 to 10-N. Incidentally, one end of each of the connecting lines 14-1 to 14-N has a front end connector, and the other end of each of the connecting lines 14-1 to 14-N has a rear end connector. Generally, the connecting wires 14-1 to 14-N are of various types, such as twisted wires, power wires, flat cables, etc., and mainly transmit the multiple sets of dc power provided by the power module 11 to the operating power required by the electronic components 10-1 to 10-N. For example, when one or more of the connecting wires 14-1 to 14-N are assembled improperly, the wires are damaged, such as the insulation sheath covering the outer layer of the wires is broken, and two wires with different polarities in the wires are contacted with each other or the positive-polarity wire is contacted with a grounding point or a grounding surface of a circuit board, thereby causing a short circuit. At this time, the short-circuit current of the wire is very high, so that the temperature generated by the wire itself is higher and higher, and the wire is burnt. If serious, the outer frame (or housing) of the electronic device 1 directly contacting the wire may be deformed by the continuous heating.
Note that the short-circuit current of the wire is positively correlated with the temperature of the wire. In other words, the higher the short-circuit current of the wire, the higher the temperature of the wire body. As shown in fig. 3, the preset current value is slightly larger than the maximum rated current value, and when the preset current value flows through the wire, the temperature generated by the wire body is far less than the highest temperature that can be borne by the outer frame of the electronic device 1. For example, if the maximum tolerable temperature of the outer frame of the electronic device 1 is 160 ℃, the heat resistance level of the wire is 155 ℃, and the maximum rated current value of the camera (the electronic component 10-1) is 1A, if the current flowing into the wire (the connecting wire 14-1) is 0.59A, the temperature generated by the wire (the connecting wire 14-1) is about 83 ℃. When a short circuit occurs, the current flowing into the wire (the connecting wire 14-1) is increased to 1.1A all the way, i.e. the predetermined current value (e.g. 10% of the maximum rated current value) of the overcurrent protection component 12-1 is reached, at this time, the overcurrent protection component 12-1 is switched to the open circuit state, and at the same time, the temperature generated by the wire (the connecting wire 14-1) is increased to 142 ℃, but still within the range of the highest temperature that the wire and the outer frame can bear. Therefore, the situation that the wires of the electronic device 1 are burnt due to overlarge short-circuit current in the circuit is avoided, and meanwhile, the outer frame of the electronic device 1 is prevented from being damaged or deformed due to continuous heating.
As shown in fig. 1, the electronic device 1 with overcurrent protection may further include: a detection module 15, a control module 16 and an alarm module 17. As shown in fig. 2, the detecting module 15 includes a plurality of open circuit detecting elements 15-1 to 15-N, which are electrically connected to the other ends (i.e. the ends close to the connector 13) of the overcurrent protection elements 12-1 to 12-N, respectively, and provide a detecting signal. The disconnection detecting elements 15-1 to 15-N may be modular elements such as ICs, or may be circuits formed by electronic components such as resistors, capacitors, inductors, transistors, etc. Mainly used to measure the voltage level or current level of the node.
The control module 16 is electrically connected to the detection module 15, and the alarm module 17 is electrically connected to the control module 16. The control module 16 determines whether the plurality of overcurrent protection components 12-1 to 12-N are in an open circuit state according to the plurality of detection signals, such as voltage levels or current levels, provided by the plurality of open circuit detection components 15-1 to 15-N. For example, if one of the overcurrent protection devices is in an open state, the voltage level and the current level of the node representing the overcurrent protection device are both zero. Therefore, by reading the voltage level or the current level of the node of each over-current protection device, it is known whether the node or the circuit is faulty. In addition, when one of the overcurrent protection components 12-1 to 12-N is in an open circuit state, the control module 16 generates a corresponding warning signal to the warning module 17, so that the warning module 17 is activated. The warning module 17 may be an electronic component having a display or warning function, such as a text display, a digital display, or a warning light, and is presented in the form of text, number, or light signal. Whereby the maintenance personnel can be made aware of which circuit is malfunctioning or which connection line 14-1 to 14-N is poorly assembled.
Referring to fig. 4, fig. 4 is a schematic application diagram of an electronic device with over-current protection according to an embodiment of the present invention. The electronic device 1 with overcurrent protection according to the embodiment can be applied to a notebook computer. For example, the electronic device 1 further includes: a first body 18 and a second body 19. Generally, the first body 18 includes a display mainly as a display screen, and therefore the electronic module 10 is mainly disposed in the first body 18. The second body 19 is mainly used as a host system, and includes a main board 191, a keyboard input module (not shown) and a touch input module (not shown), so that the power module 11, the protection module 12 and the connector 13 are disposed on the main board 191. In addition, the second body 19 is pivotally connected to the first body 18 through a pivot structure, so that the first body 18 and the second body 19 can be opened at various angles.
To sum up, the embodiment of the utility model provides an electronic device with overcurrent protection through dispose a protection module that has a plurality of overcurrent protection subassemblies between supply end and power receiving end to through predetermineeing the current value for each overcurrent protection subassembly setting one, this is predetermine the maximum rated current value that the current value is greater than the electronic component of power receiving end. When the current of the electronic device is abnormal, the current flowing through the electronic component of the power receiving end exceeds the preset current value of the overcurrent protection component, and the overcurrent protection component is triggered to be started to be switched into the open circuit state so as to stop supplying power to the power receiving end, so that the condition that a flat cable of the electronic device is burnt due to overlarge fault current is avoided, or other components, mechanism shells and the like of the electronic device are damaged or deformed due to continuous heating is avoided.
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the technology of the present invention, and are not intended to limit the implementations of the technology of the present invention in any way, and those skilled in the art can make modifications or changes to other equivalent embodiments without departing from the scope of the technology disclosed in the present invention, but should be regarded as the technology or implementations substantially the same as the present invention.
Claims (8)
1. An electronic device with overcurrent protection, comprising:
an electronic module comprising a plurality of electronic components, each of the electronic components having a maximum rated current value;
the power module provides power for the electronic components; and
the protection module is electrically connected with the power supply module and comprises a plurality of overcurrent protection components which are respectively and electrically connected with the electronic components, wherein each overcurrent protection component has a preset current value, the preset current values of the overcurrent protection components are respectively larger than the maximum rated current values of the corresponding electronic components, and any one of the overcurrent protection components is switched into a broken circuit state when the received current value is larger than the preset current value.
2. The electronic device of claim 1, further comprising:
a connector electrically connected to the protection module; and
and the connecting wires respectively correspond to the electronic assemblies, wherein one end of each connecting wire is electrically connected to the connector, and the other end of each connecting wire is electrically connected to the corresponding electronic assembly.
3. The electronic device as claimed in claim 2, wherein one end of each of the connecting wires has a front connector, and the other end of each of the connecting wires has a rear connector.
4. The electronic device of claim 1, wherein the over-current protection components are fuses, power protection switches, positive temperature coefficient thermistors, or a combination thereof.
5. The electronic device of claim 1, wherein the electronic components comprise a camera, a microphone, a display screen, and a backlight module.
6. The electronic device of claim 1, further comprising:
the detection module comprises a plurality of open circuit detection components which are respectively and electrically connected with the overcurrent protection components and respectively provide a detection signal;
a control module electrically connected to the detection module; and
a warning module electrically connected to the control module,
the control module judges whether the overcurrent protection assemblies are in an open circuit state or not according to the detection signals provided by the open circuit detection assemblies, and when one of the overcurrent protection assemblies is in the open circuit state, the control module generates a corresponding warning signal to the warning module to enable the warning module to actuate.
7. The electronic device of claim 1, further comprising:
a first body; and
a second body having a main board, the second body pivotally connected to the first body,
the electronic module is arranged in the first machine body, and the power module, the protection module and the connector are arranged on the mainboard.
8. The electronic device of claim 7, wherein the second body further comprises at least one of a keyboard input module or a touch input module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108203226U TWM584914U (en) | 2019-03-18 | 2019-03-18 | Electronic device with overcurrent protection |
| TW108203226 | 2019-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821784U true CN209821784U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920493749.2U Active CN209821784U (en) | 2019-03-18 | 2019-04-12 | Electronic device with overcurrent protection |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209821784U (en) |
| TW (1) | TWM584914U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI815379B (en) * | 2022-03-29 | 2023-09-11 | 和碩聯合科技股份有限公司 | Electronic device |
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2019
- 2019-03-18 TW TW108203226U patent/TWM584914U/en unknown
- 2019-04-12 CN CN201920493749.2U patent/CN209821784U/en active Active
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| Publication number | Publication date |
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| TWM584914U (en) | 2019-10-11 |
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