CN211427303U - PCB protection system and server system - Google Patents
PCB protection system and server system Download PDFInfo
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- CN211427303U CN211427303U CN201921914850.7U CN201921914850U CN211427303U CN 211427303 U CN211427303 U CN 211427303U CN 201921914850 U CN201921914850 U CN 201921914850U CN 211427303 U CN211427303 U CN 211427303U
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- 238000000034 method Methods 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The application discloses protection system of PCB includes: the temperature acquisition module is arranged on the surface layer of the PCB and used for acquiring the temperature of the PCB; the control module is connected with the temperature acquisition module and used for generating a control signal when the temperature of the PCB is greater than a preset temperature value; and the external power supply module is connected with the control module and used for stopping supplying power to the PCB when receiving the control signal. This application passes through temperature acquisition module control PCB temperature, and when the PCB high temperature, generate control signal control outside power module through control module and stop for the PCB power supply, the passageway that the heavy current of disconnection passed through PCB to avoided continuously being in the ignition point that the short circuit state of generating heat brought and continuously existing and accompanying the problem of the phenomenon of catching fire, improved PCB's security. The application also discloses a server system, which has the beneficial effects.
Description
Technical Field
The present application relates to the field of servers, and in particular, to a PCB protection system and a server system.
Background
With the drastic increase of the internet data volume, the calculation amount and the calculation frequency are increased, the functional requirements of products are more and more, the Board card design inside the server is more and more complex, and the layer number of the PCB (Printed Circuit Board) is also increasing. If the copper sheet is not firmly adhered in the manufacturing process of the PCB, short circuit or capacitance effect is easy to generate. If the PCB is drilled not exactly in the middle but is deviated to one side, it will be unevenly matched or will easily contact the middle power plane or bottom plane, thereby causing potential short circuit or poor grounding. Although the PCB is made of flame retardant material, such as UL-94 grade, HB grade, etc., if the reason for the combustion of the PCB is the short circuit reason or the material, the PCB is continuously in a short circuit heating state due to the continuous current provided by the system power supply, and the ignition point is continuously present and accompanied by the ignition phenomenon, so the safety is low.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The purpose of the application is to provide a protection system of a PCB, when the temperature of the PCB is too high, an external power supply module is controlled to stop supplying power to the PCB, and a large current is cut off from a channel of the PCB, so that the problems that ignition points continuously exist and ignition phenomena are accompanied due to the fact that the PCB is continuously in a short circuit heating state are avoided, and the safety of the PCB is improved; it is another object of the present application to provide a server system including the protection system of the PCB described above.
In order to solve the above technical problem, the present application provides a protection system for a PCB, including:
the temperature acquisition module is arranged on the surface layer of the PCB and used for acquiring the temperature of the PCB;
the control module is connected with the temperature acquisition module and used for generating a control signal when the temperature of the PCB is greater than a preset temperature value;
and the external power supply module is connected with the control module and used for stopping supplying power to the PCB after receiving the control signal.
Preferably, the protection system further comprises:
and the switch module is connected with the control module and used for cutting off the power supply of the power supply module on the PCB after receiving the control signal.
Preferably, the switch module comprises a MOS transistor.
Preferably, the control module is a CPLD.
Preferably, the control module and the external power supply module are connected by an I2C bus.
Preferably, the control module and the power module are connected through a GPIO.
Preferably, the temperature acquisition module is a temperature monitoring chip attached to the surface layer of the PCB.
Preferably, the temperature acquisition module is a film-covered thermocouple temperature sensor embedded in the surface layer of the PCB.
Preferably, the temperature monitoring chip is a PX8746 chip.
In order to solve the above technical problem, the present application further provides a server system including the protection system for a PCB according to any one of the above.
The application provides a PCB's protection system, through temperature acquisition module control PCB temperature, when the PCB high temperature, generate control signal control outside power module through control module and stop for the PCB power supply, break off the passageway that the heavy current passes through PCB to avoided continuously being in the ignition point that the short circuit state of generating heat brought and continuously existing and accompanying the problem of the phenomenon of catching fire, improved PCB's security. The application also provides a server system which has the same beneficial effect as the PCB protection system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a protection system for a PCB provided in the present application;
fig. 2 is a schematic structural diagram of another protection system for a PCB provided in the present application.
Detailed Description
The core of the application is to provide a protection system of the PCB, when the temperature of the PCB is too high, the external power supply module is controlled to stop supplying power to the PCB, and a large current is cut off from a channel of the PCB, so that the problems that ignition points continuously exist and ignition phenomena are accompanied due to the fact that the PCB is continuously in a short circuit heating state are avoided, and the safety of the PCB is improved; at the heart of the present application is also a server system comprising the protection system of the above PCB.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
With the fierce increase of the data volume of the internet, the calculation amount and the calculation frequency are increased, the functional requirements of products are more and more, the board card design inside the server is more and more complex, and the number of layers of the PCB is also continuously increased. If the copper sheet is not firmly adhered in the manufacturing process of the PCB, short circuit or capacitance effect is easy to generate. If the PCB is drilled not exactly in the middle but is deviated to one side, it will be unevenly matched or will easily contact the middle power plane or bottom plane, thereby causing potential short circuit or poor grounding. If the reason that the PCB generates combustion is the short circuit reason or the material reason, the system power supply can still continuously provide current, the PCB can be continuously in a short circuit heating state, the ignition point continuously exists and is accompanied with the ignition phenomenon, and the safety is low. Based on various problems of the related art, the protection system of the PCB provided by the following embodiments of the present application can achieve the purpose of controlling the external power supply module to stop supplying power to the PCB and cutting off the passage of a large current through the PCB when the temperature of the PCB is too high, thereby improving the safety of the PCB.
The protection system for the PCB provided in the present application is described in detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a PCB protection system provided in the present application, the PCB protection system including:
the temperature acquisition module 1 is arranged on the surface layer of the PCB and used for acquiring the temperature of the PCB;
the control module 2 is connected with the temperature acquisition module 1 and used for generating a control signal when the temperature of the PCB is greater than a preset temperature value;
and the external power supply module 3 is connected with the control module 2 and used for stopping supplying power to the PCB when receiving the control signal.
Specifically, in the embodiment, the temperature acquisition module 1 is arranged on the surface layer of the PCB, so that the temperature acquisition module 1 acquires the temperature of the PCB and sends the temperature of the PCB to the control module 2 connected with the temperature acquisition module; the control module 2 is preset with a preset temperature value, the preset temperature value corresponds to the ignition point and is specifically smaller than the temperature value corresponding to the ignition point, the control module 2 compares the PCB temperature with the preset temperature value, and when the PCB temperature is larger than the preset temperature value, a control signal is generated; the external power supply module 3 is connected with the control module 2 so as to receive the control signal output by the control module 2, and the external power supply module 3 does not supply power for the PCB after receiving the control signal, so that the aim of disconnecting a channel of a large current through the PCB is achieved, the problem that an ignition point continuously exists and is accompanied with an ignition phenomenon because the PCB is continuously in a short circuit heating state is avoided, and the safety of the PCB is improved. The external power supply module 3 is a power supply module in the server system, is not a power supply module on the PCB, and normally supplies power to the PCB when it does not receive the control signal. As a preferred embodiment, the control module 2 is a CPLD (Complex Programmable logic device).
Specifically, as a preferred embodiment, the temperature acquisition module 1 may specifically be a temperature monitoring chip attached to a surface layer of the PCB, the temperature monitoring chip may be a PX8746 chip, and the chip supports a monitoring function of the Temp sequence, and in this embodiment, the temperature monitoring function of the PX8746 chip is used to acquire the temperature of the PCB. As another preferred embodiment, the temperature acquisition module 1 may be a film-covered thermocouple temperature sensor embedded in the surface layer of the PCB.
The application provides a PCB's protection system, through temperature acquisition module control PCB temperature, when the PCB high temperature, generate control signal control outside power module through control module and stop for the PCB power supply, break off the passageway that the heavy current passes through PCB to avoided continuously being in the ignition point that the short circuit state of generating heat brought and continuously existing and accompanying the problem of the phenomenon of catching fire, improved PCB's security.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another PCB protection system provided in the present application, the PCB protection system is based on the above embodiments:
as a preferred embodiment, the protection system further comprises:
and the switch module 4 is connected with the control module 2 and used for cutting off the power supply of the power supply module on the PCB after receiving the control signal.
Specifically, in this embodiment, a switch module 4 controlled by temperature change is further disposed in the power module inside the PCB, the switch module 4 is connected to the control module 2 through a General-purpose input/output (GPIO) so as to receive the control signal output by the control module 2, and after receiving the control signal, the switch module 4 is disconnected to cut off the power supply path inside the PCB. It can be understood that the power module herein may refer to a voltage conversion module such as a DC-DC conversion module, an AC-DC conversion module, etc. inside the PCB, and the power module is turned off by controlling the switch module 4, so as to cut off the power supplied to the load of the PCB, thereby further improving the safety of the PCB. As a preferred embodiment, the switch module 4 includes a MOS transistor, which can identify the high temperature hidden trouble of the PCB earlier, and is easier to be used in products than the conventional Fuse design.
It will be appreciated that a plurality of power modules may be included within a single PCB and therefore a corresponding number of switch modules should be provided.
As a preferred embodiment, the control module 2 and the external power supply module 3 are connected by an I2C bus.
Specifically, a register corresponding to the PCB temperature is preset in the external power supply module 3, and the control module 2 modifies the value of the register through the I2C bus, for example, when the PCB temperature is normal, the value of the register is 0, when the PCB temperature is too high, the control module 2 modifies the value of the register to 1, and when the controller detects that the value of the register is 1, the external power supply module 3 stops supplying power to the PCB.
To sum up, this application utilizes the temperature monitoring function of PX8746 chip to and the MOS circuit that increases, carry out the operation of initiative cutting off external power supply and the power supply of initiative cutting off MOS circuit according to the PCB temperature, break off the passageway that the heavy current passes through PCB, effectively realized the product fire prevention and fire prevention, guarantee that the machine does not have major incident and takes place.
In another aspect, the present application further provides a server system including the protection system of the PCB according to any of the above embodiments.
The server system provided by the application has the same beneficial effects as the PCB protection system.
For introducing a server system provided in the present application, please refer to the above embodiments, which are not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A protection system of a PCB, comprising:
the temperature acquisition module is arranged on the surface layer of the PCB and used for acquiring the temperature of the PCB;
the control module is connected with the temperature acquisition module, arranged on the PCB and used for generating a control signal when the temperature of the PCB is greater than a preset temperature value;
the external power supply module is connected with the control module and used for stopping supplying power to the PCB when receiving the control signal;
the protection system further comprises:
and the switch module is connected with the control module and used for cutting off the power supply of the power supply module on the PCB after receiving the control signal.
2. The protection system of the PCB of claim 1, wherein the switch module comprises a MOS transistor.
3. The PCB protection system of claim 1, wherein the control module is a CPLD.
4. The protection system of the PCB of claim 1, wherein the control module and the external power module are connected through an I2C bus.
5. The protection system of the PCB of claim 1, wherein the control module and the power module are connected through GPIO.
6. The PCB protection system of any one of claims 1-5, wherein the temperature acquisition module is a temperature monitoring chip attached to the surface layer of the PCB.
7. The PCB protection system of any one of claims 1-5, wherein the temperature acquisition module is a film-covered thermocouple temperature sensor embedded in the surface layer of the PCB.
8. The PCB protection system of claim 6, wherein the temperature monitoring chip is a PX8746 chip.
9. A server system, characterized in that it comprises a protection system of a PCB according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921914850.7U CN211427303U (en) | 2019-11-07 | 2019-11-07 | PCB protection system and server system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921914850.7U CN211427303U (en) | 2019-11-07 | 2019-11-07 | PCB protection system and server system |
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| Publication Number | Publication Date |
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| CN211427303U true CN211427303U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921914850.7U Active CN211427303U (en) | 2019-11-07 | 2019-11-07 | PCB protection system and server system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099612A (en) * | 2020-09-18 | 2020-12-18 | 联想(北京)有限公司 | Server mainboard, server and power supply control method |
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2019
- 2019-11-07 CN CN201921914850.7U patent/CN211427303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099612A (en) * | 2020-09-18 | 2020-12-18 | 联想(北京)有限公司 | Server mainboard, server and power supply control method |
| US12101885B2 (en) | 2020-09-18 | 2024-09-24 | Lenovo (Beijing) Limited | Server motherboard, server, and power supply control method |
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