Embedded automatic sub-control multi-stage multi-channel power supply heat dissipation system

Abstract

The invention, which relates to the technical field of the 2U high-power multi-output power supply, discloses an embedded automatic sub-control multi-stage multi-channel power supply heat dissipation system comprising a case power supply body and a power conversion module arranged in the case power supply body. A multi-channel detection temperature control module composed of a plurality of single heat dissipation channels and single channel temperature protection units matched with the single heat dissipation channels is arranged in the case power supply body, and the case power supply body is further provided with an air inlet module and an output heat conduction module. And the air inlet module and the output heat conduction module are respectively communicated with the single heat dissipation channel. Constant-temperature regulation and control are carried out on the single heat dissipation channel with the working temperature not meeting the constant-temperature threshold value, precise single heat dissipation channel temperature control is achieved, the output precision is higher, fluctuation is smaller, and the service life of a power supply body is remarkably prolonged; and meanwhile, the energy-saving effect is good, the power consumption of the whole case power supply body can be reduced to the maximum extent, and energy conservation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of 2U high-power multi-output power supply, and in particular to an embedded automatic sub-control multi-level multi-channel power supply heat dissipation system. Background Art

[0002] 2U high-power multi-output power supply belongs to the standard chassis power supply and belongs to the category of modular power supply. It is often installed on the rack, such as vehicle-mounted system and ground system. Most systems also contain other functional modules. Such as communication system, control system, distribution system, and acquisition system. These systems will be installed together in a stacked manner through standard cabinets and connected to each other through aviation plug cables.

[0003] In the design of 2U high-power multi-output power supply, the chassis size is fixed, and an air plug is installed at the back of the chassis. The bending degree of the air plug connection line also needs to occupy the depth space. Further compress the design space. The chassis panel is installed on the rack through the side ear to install the anti-slip screws, and the power module is fixed on the bracket to adapt to the actual use environment requirements such as vibration and bumps. Due to size limitations, high power requirements, and installation on the rack, there are devices above and below, and the heat dissipation is greatly limited. As a result, the power cannot be expanded. The most important thing is that the heat cannot be dissipated in time, the heat dissipation environment is poor, and other devices also dissipate heat, which greatly increases the power dissipation requirements. In addition, due to the influence of efficiency, the power supply itself has a large output power requirement and will generate a lot of heat. Seriously affect the service life and reliability of the power supply. At the same time, after the 2U chassis power supply is installed, the actual application environment is usually harsh, either in a complex computer room or in a vehicle control room. If it is on a vehicle, there will be a working environment under the sun. The working environment temperature in summer will be higher, which is different from the room temperature environment. The power supply heat dissipation requirements will be higher, and higher requirements are put forward for the overall heat dissipation design of the power supply. Better heat dissipation design and higher power density design are always the goals to be pursued.

[0004] At present, 2U chassis power supplies all use a simple general technology of external fan heat dissipation in the chassis shell, which has poor heat dissipation efficiency, low power supply reliability, and uneven internal system heat. That is, a single heat dissipation form of the outer shell is used, which cannot guarantee the temperature consistency of the internal power devices. As a result, some power modules have reached the maximum temperature, while some modules may be very low, causing the entire product to have inconsistent internal working conditions, affecting the life and reliability of the entire machine. At the same time, there is no detection and temperature control technology, and the actual heat dissipation requirements of the internal power supply cannot be guaranteed, which easily causes local heat accumulation, resulting in partial or overall failure of the power supply and different lifespans of internal devices.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0006] In view of the problems in the related art, the present invention proposes an embedded automatic sub-control multi-level multi-channel power supply heat dissipation system to overcome the above technical problems existing in the existing related art.

[0007] The technical solution of the present invention is achieved in this way:

[0008] An embedded automatic sub-control multi-level multi-channel power supply heat dissipation system, comprising: a chassis power supply body and a power conversion module arranged in the chassis power supply body, the chassis power supply body is provided with a multi-channel detection and temperature control module composed of a plurality of single heat dissipation channels and a single-channel temperature protection unit adapted to the single heat dissipation channel, and the chassis power supply body is also provided with an air intake module and an output heat conduction module, the air intake module and the output heat conduction module are respectively connected to the single heat dissipation channel, wherein;

[0009] The air intake module is used to input external cold air into the chassis power supply body and transport it to the single heat dissipation channel;

[0010] The single-channel temperature protection unit includes: a radiator for exporting heat generated by the power conversion module to the current single heat dissipation channel, a temperature control module for detecting and adjusting the temperature of the current single heat dissipation channel, and a heat dissipation fan for obtaining instructions from the temperature control module and dissipating the heat of the current single heat dissipation channel to the output heat conduction module;

[0011] The output heat conduction module is used to output the heat in the single heat dissipation channel to the outside of the chassis power supply body;

[0012] The multi-channel detection and temperature control module is used to obtain the working temperatures of all the single heat dissipation channels within a preset load cycle, compare the working temperatures of all the single heat dissipation channels with a preset constant temperature threshold, and perform constant temperature control on the single heat dissipation channels whose working temperatures do not meet the constant temperature threshold until the working temperatures of all the single heat dissipation channels within the preset cycle meet the constant temperature threshold.

[0013] Furthermore, the air intake module includes a side air intake and a bottom air intake arranged on the chassis power supply body.

[0014] Furthermore, the temperature control module comprises: a temperature detection unit, a temperature decision unit and an execution unit, wherein;

[0015] The temperature detection unit includes: a temperature sensor and a resistor R3 for voltage division, and a resistor R1 and a resistor R2 for voltage division to form two voltage points VI and Vs.

[0016] Furthermore, the temperature control module performs temperature detection and temperature adjustment on the current single heat dissipation channel, including the following steps:

[0017] When the temperature detection unit obtains that the current operating temperature of the single heat dissipation channel is greater than the preset high temperature threshold, and the temperature decision unit input voltage Vs is higher than the preset input voltage VI, the temperature decision unit outputs a high level to the execution unit, and the execution unit controls the heat dissipation fan to dissipate the current single heat dissipation channel and outputs the heat to the output heat conduction module;

[0018] When the temperature detection unit obtains that the current operating temperature of the single heat dissipation channel is less than the preset low temperature threshold and the temperature decision unit input voltage VI is lower than the preset input voltage Vs, the temperature decision unit outputs a low level to the execution unit, and the execution unit controls the cooling fan to turn off and stop cooling the current single heat dissipation channel.

[0019] Furthermore, the multi-channel detection and temperature control module performs constant temperature control on the single heat dissipation channel whose operating temperature does not meet the constant temperature threshold, including the following steps:

[0020] Detect whether the current chassis power supply body is in a load state;

[0021] If the current chassis power supply body is in a load state, the current operating temperature of a single heat dissipation channel is obtained through a single-channel temperature protection unit;

[0022] The operating temperatures of all the single heat dissipation channels are compared with a preset constant temperature threshold, and the single heat dissipation channels whose operating temperatures do not meet the constant temperature threshold are subjected to constant temperature control, which includes the following steps:

[0023] If the operating temperature of the single heat dissipation channel of the current path is lower than the preset constant temperature threshold, continue to detect the operating temperature of the current single heat dissipation channel;

[0024] If the operating temperature of the current single heat dissipation channel is higher than the preset constant temperature threshold, an execution command is sent to the execution unit to control the heat dissipation fan to dissipate the heat of the current single heat dissipation channel and output the heat to the output heat conduction module.

[0025] Furthermore, the radiator is a cooling fin.

[0026] Beneficial effects of the present invention:

[0027] 1. The present invention detects the load state in advance through a multi-channel detection and temperature control module, obtains the operating temperature of all single heat dissipation channels within a preset period under the load state, and performs constant temperature control on the single heat dissipation channels whose operating temperature does not meet the constant temperature threshold, thereby achieving precise temperature control of the single heat dissipation channel, ensuring that the chassis power supply body operates in a suitable temperature environment, and in a stable temperature environment, the output accuracy is higher and the fluctuation is smaller, that is, the output stability and reliability of the power supply body are significantly improved, and the service life of the power supply body is significantly extended; at the same time, the energy-saving effect is good. If the load state is not detected, only the temperature protection detection is performed through the single-channel temperature protection unit, which can minimize the power consumption of the entire chassis power supply body and help save energy.

[0028] 2. The present invention provides a multi-channel detection and temperature control module composed of a plurality of single heat dissipation channels and a single-channel temperature protection unit adapted to the single heat dissipation channels in the chassis power supply body. The embedded single heat dissipation channels and the single-channel temperature protection units are independent of each other, and can perform targeted protection and heat dissipation for different heating areas. The heat can be dissipated at the same time to avoid heat accumulation in a certain place, which can effectively avoid local overheating, ensure the uniformity and efficiency of the heat dissipation of the chassis power supply body, ensure the uniform temperature distribution of the entire chassis power supply body, and greatly improve the heat dissipation efficiency of the chassis power supply body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the principle of an embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to an embodiment of the present invention;

[0031] Figure 2 It is a circuit diagram of a temperature control module of an embedded automatic sub-control multi-stage multi-channel power supply heat dissipation system according to an embodiment of the present invention.

[0032] In the figure:

[0033] 1. Air intake module; 2. Single-channel temperature protection unit; 3. Output thermal conductivity module; 4. Chassis power supply body; 5. Power conversion module; 6. Single heat dissipation channel; 7. Multi-channel detection and temperature control module;

[0034] 21. Radiator; 22. Temperature control module; 23. Cooling fan;

[0035] 24. Temperature detection unit; 25. Temperature decision unit; 26. Execution unit. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0037] According to an embodiment of the present invention, there is provided an embedded automatic sub-control multi-level multi-channel power supply heat dissipation system.

[0038] like Figure 1 As shown, the embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to an embodiment of the present invention comprises: a chassis power supply body 4 and a power conversion module 5 arranged in the chassis power supply body 4, the chassis power supply body 4 is provided with a multi-channel detection temperature control module 7 composed of a plurality of single heat dissipation channels 6 and a single-channel temperature protection unit 2 adapted to the single heat dissipation channel 6, and the chassis power supply body 4 is also provided with an air intake module 1 and an output heat conduction module 3, the air intake module 1 and the output heat conduction module 3 are respectively connected to the single heat dissipation channel 6, wherein;

[0039] The air intake module 1 is used to input external cold air into the chassis power supply body 4 and transport it to the single heat dissipation channel 6;

[0040] The single-channel temperature protection unit 2 includes: a heat sink 21 for exporting the heat generated by the power conversion module 5 to the current single heat dissipation channel 6, a temperature control module 22 for detecting and adjusting the temperature of the current single heat dissipation channel 6, and a heat dissipation fan 23 for obtaining instructions from the temperature control module 22 and dissipating the heat of the current single heat dissipation channel 6 to the output heat conduction module 3;

[0041] The output heat conduction module 3 is used to output the heat in the single heat dissipation channel 6 to the outside of the chassis power supply body 4;

[0042] The multi-channel detection and temperature control module 7 is used to obtain the working temperature of all single-path heat dissipation channels 6 within a preset load cycle, and compare the working temperature of all single-path heat dissipation channels 6 with a preset constant temperature threshold, and perform constant temperature control on the single heat dissipation channels 6 whose working temperature does not meet the constant temperature threshold until the working temperature of all single-path heat dissipation channels 6 within the preset cycle meets the constant temperature threshold.

[0043] The heat sink 21 is a heat dissipation fin.

[0044] The air intake module 1 includes a side air intake and a bottom air intake arranged on the chassis power supply body 4 .

[0045] In the technical solution, the side air inlet allows external cold air to enter the chassis power supply body 4 from the side of the chassis power supply body 4. After the cold air enters the inside of the chassis power supply body 4, the air volume gradually weakens from the side to the center; at the same time, the single heat dissipation channel 6 draws in external cold air from the bottom air inlet of each bottom, that is, the cold air required for the heat dissipation of the single-channel temperature protection unit 2 comes from the side air inlet and the bottom air inlet, ensuring that the cooling air entering the chassis power supply body 4 is sufficient. Since the heat dissipation of the single heat dissipation channel 6 is independent of each other, it is guaranteed that there will be no power failure caused by poor heat dissipation due to uneven internal air volume, thereby ensuring good heat dissipation working efficiency.

[0046] In addition, specifically, for the above-mentioned output heat conduction module 3, the output heat conduction module 3 outputs the heat of the internal single heat dissipation channel 6 to the outside of the chassis power supply body 4 through a powerful fan on the shell of the chassis power supply body 4.

[0047] In addition, if Figure 2 As shown, the temperature control module 22 includes: a temperature detection unit 24, a temperature decision unit 25 and an execution unit 26, wherein;

[0048] The temperature detection unit 24 includes: a temperature sensor and a resistor R3 for voltage division, and a resistor R1 and a resistor R2 for voltage division to form two voltage points VI and Vs.

[0049] This technical solution obtains the working load condition of the power conversion module 5 according to each independent single heat dissipation channel 6, that is, the temperature detection unit detects the working temperature of the power conversion module 5 in the current single heat dissipation channel 6 area in real time;

[0050] The temperature control module 22 performs temperature detection and temperature adjustment on the current single heat dissipation channel 6, including the following steps:

[0051] When the temperature detection unit 24 obtains that the current operating temperature of the single heat dissipation channel 6 is greater than the preset high temperature threshold, and the input voltage Vs of the temperature decision unit 25 is higher than the preset input voltage VI, the temperature decision unit 25 outputs a high level to the execution unit, and the execution unit 26 controls the heat dissipation fan 23 to dissipate the current single heat dissipation channel 6 and output the heat to the output heat conduction module 3;

[0052] When the temperature detection unit 24 obtains that the current operating temperature of the single heat dissipation channel 6 is less than the preset low temperature threshold and the input voltage VI of the temperature decision unit 25 is lower than the preset input voltage Vs, the temperature decision unit 25 outputs a low level to the execution unit, and the execution unit 26 controls the cooling fan 23 to turn off and stop cooling the current single heat dissipation channel 6.

[0053] With the help of the above scheme, the embedded single heat dissipation channels 6 and the single-channel temperature protection units 2 are independent of each other, and the real-time temperature of the working area of ​​the chassis power supply body 4 corresponding to each single heat dissipation channel 6 can be monitored in real time, and targeted protection and heat dissipation can be performed for different heating areas, and the heat can be dissipated at the same time, avoiding heat accumulation in a certain place, effectively avoiding local overheating, ensuring the uniformity and efficiency of the heat dissipation of the chassis power supply body 4, ensuring that the temperature of the entire chassis power supply body 4 is evenly distributed, and greatly improving the heat dissipation efficiency of the chassis power supply body 4.

[0054] In addition, the multi-channel detection and temperature control module 7 performs constant temperature control on the single heat dissipation channel 6 whose operating temperature does not meet the constant temperature threshold, including the following steps:

[0055] Detect whether the current chassis power supply body 4 is in a load state;

[0056] If the current chassis power supply body 4 is in a load state, the current operating temperature of the single heat dissipation channel 6 is obtained through the single-channel temperature protection unit 2;

[0057] The operating temperatures of all single heat dissipation channels 6 are compared with a preset constant temperature threshold, and the single heat dissipation channels 6 whose operating temperatures do not meet the constant temperature threshold are subjected to constant temperature control, which includes the following steps:

[0058] If the operating temperature of the current single heat dissipation channel 6 is lower than the preset constant temperature threshold, continue to detect the operating temperature of the current single heat dissipation channel 6;

[0059] If the operating temperature of the current single heat dissipation channel 6 is higher than the preset constant temperature threshold, an execution command is sent to the execution unit 26 to control the heat dissipation fan 23 to dissipate heat for the current single heat dissipation channel 6 and output the heat to the output heat conduction module 3 .

[0060] With the help of the above scheme, the multi-channel detection and temperature control module 7 detects the load state in advance. If it is not detected to be in the load state, temperature protection detection is performed only through the single-channel temperature protection unit 2, which can minimize the power consumption of the entire chassis power supply body 4 and help save energy.

[0061] In addition, when the multi-channel detection and temperature control module 7 pre-detects that it is in a load state, and obtains the working temperature of all single-path heat dissipation channels 6 within a preset period under the load state, and performs constant temperature control on the single heat dissipation channels 6 whose working temperature does not meet the constant temperature threshold, until the working temperature of all single-path heat dissipation channels 6 is at a constant temperature within the current period, and performs temperature protection detection through the single-channel temperature protection unit 2 outside the period until the working temperature of all single-path heat dissipation channels 6 is obtained within the next preset period, the power consumption of the entire chassis power supply body 4 is minimized, which helps save energy.

[0062] At the same time, the single heat dissipation channel 6 whose operating temperature does not meet the constant temperature threshold is subjected to constant temperature regulation to achieve precise temperature control of the single heat dissipation channel 6, ensuring that the chassis power supply body 4 operates in a suitable temperature environment. In a stable temperature environment, the output accuracy is higher and the fluctuation is smaller, which significantly improves the output stability and reliability of the power supply body 4 and significantly extends the service life of the power supply body 4.

[0063] In summary, with the help of the above technical solution of the present invention, the following effects can be achieved:

[0064] 1. The present invention detects the load state in advance through the multi-channel detection temperature control module 7, obtains the working temperature of all single heat dissipation channels 6 within a preset period under the load state, and performs constant temperature control on the single heat dissipation channel 6 whose working temperature does not meet the constant temperature threshold, so as to achieve precise temperature control of the single heat dissipation channel 6, and ensure that the chassis power supply body 4 works in a suitable temperature environment. In a stable temperature environment, the output accuracy is higher and the fluctuation is smaller, that is, the output stability and reliability of the power supply body 4 are significantly improved, and the service life of the power supply body 4 is significantly extended; at the same time, the energy-saving effect is good. If the load state is not detected, the temperature protection detection is performed only through the single-channel temperature protection unit 2, which can minimize the power consumption of the entire chassis power supply body 4 and help save energy.

[0065] 2. The present invention provides a multi-channel detection and temperature control module 7 composed of a plurality of single heat dissipation channels 6 and a single-channel temperature protection unit 2 adapted to the single heat dissipation channels 6 in a chassis power supply body 4. The embedded single heat dissipation channels 6 and the single-channel temperature protection units 2 are independent of each other, and can perform targeted protection and heat dissipation for different heating areas. The heat can be dissipated at the same time to avoid heat accumulation in a certain place, which can effectively avoid local overheating, ensure the uniformity and efficiency of the heat dissipation of the chassis power supply body 4, ensure that the temperature of the entire chassis power supply body 4 is evenly distributed, and greatly improve the heat dissipation efficiency of the chassis power supply body 4.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. After considering the disclosure of the specification and the examples, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and the examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are indicated by the claims.

[0067] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An embedded automatic sub-control multi-level multi-channel power supply cooling system, comprising: A chassis power supply body (4) and a power conversion module (5) arranged in the chassis power supply body (4), characterized in that a multi-channel detection and temperature control module (7) composed of a plurality of single heat dissipation channels (6) and a single-channel temperature protection unit (2) adapted to the single heat dissipation channel (6) is arranged in the chassis power supply body (4), and the chassis power supply body (4) is also provided with an air intake module (1) and an output heat conduction module (3), the air intake module (1) and the output heat conduction module (3) are respectively connected to the single heat dissipation channel (6), wherein; The air intake module (1) is used to input external cold air into the chassis power supply body (4) and transport it to the single heat dissipation channel (6); The single-channel temperature protection unit (2) comprises: a heat sink (21) for exporting heat generated by a power conversion module (5) to a current single heat dissipation channel (6), a temperature control module (22) for detecting and adjusting the temperature of the current single heat dissipation channel (6), and a heat dissipation fan (23) for obtaining instructions from the temperature control module (22) and dissipating heat from the current single heat dissipation channel (6) to the output heat conduction module (3); The output heat conduction module (3) is used to output the heat in the single heat dissipation channel (6) to the outside of the chassis power supply body (4); The multi-channel detection temperature control module (7) is used to obtain the working temperatures of all the single heat dissipation channels (6) within a preset load cycle, compare the working temperatures of all the single heat dissipation channels (6) with a preset constant temperature threshold, and perform constant temperature control on the single heat dissipation channels (6) whose working temperatures do not meet the constant temperature threshold, until the working temperatures of all the single heat dissipation channels (6) within the preset cycle meet the constant temperature threshold.

2. The embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to claim 1 is characterized in that: The air intake module (1) comprises a side air intake and a bottom air intake arranged on the chassis power supply body (4).

3. The embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to claim 1 is characterized in that: The temperature control module (22) comprises: a temperature detection unit (24), a temperature decision unit (25) and an execution unit (26), wherein; The temperature detection unit (24) comprises: a temperature sensor and a resistor R3 for voltage division, and a resistor R1 and a resistor R2 for voltage division to form two voltage points VI and Vs.

4. The embedded automatic sub-control multi-level multi-channel power supply cooling system according to claim 3 is characterized in that: The temperature control module (22) performs temperature detection and temperature regulation on the current single heat dissipation channel (6), comprising the following steps: When the temperature detection unit (24) obtains that the current operating temperature of the single heat dissipation channel (6) is greater than a preset high temperature threshold, and the temperature decision unit (25) inputs a voltage Vs higher than a preset input voltage VI, the temperature decision unit (25) outputs a high level to the execution unit, and the execution unit (26) controls the heat dissipation fan (23) to dissipate heat for the current single heat dissipation channel (6), and outputs the heat to the output heat conduction module (3); When the temperature detection unit (24) obtains that the current operating temperature of the single heat dissipation channel (6) is less than a preset low temperature threshold, and the temperature decision unit (25) inputs a voltage VI lower than a preset input voltage Vs, the temperature decision unit (25) outputs a low level to the execution unit, and the execution unit (26) controls the heat dissipation fan (23) to turn off, thereby stopping cooling the current single heat dissipation channel (6).

5. The embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to claim 4 is characterized in that: The multi-channel detection and temperature control module (7) performs constant temperature control on the single heat dissipation channel (6) whose operating temperature does not meet the constant temperature threshold, comprising the following steps: Detecting whether the chassis power supply body (4) is currently in a load state; If the chassis power supply body (4) is currently in a load state, the operating temperature of the current single heat dissipation channel (6) is obtained through the single-channel temperature protection unit (2); The operating temperatures of all the single heat dissipation channels (6) are compared with a preset constant temperature threshold, and the single heat dissipation channels (6) whose operating temperatures do not meet the constant temperature threshold are subjected to constant temperature control, wherein the following steps are included: If the current operating temperature of the single heat dissipation channel (6) is lower than the preset constant temperature threshold, continue to detect the current operating temperature of the single heat dissipation channel (6); If the operating temperature of the current single heat dissipation channel (6) is higher than a preset constant temperature threshold, an execution command is sent to the execution unit (26) to control the heat dissipation fan (23) to dissipate heat for the current single heat dissipation channel (6) and output the heat to the output heat conduction module (3).

6. The embedded automatic sub-control multi-level multi-channel power supply heat dissipation system according to claim 1 or 5, characterized in that: The radiator (21) is a heat dissipation fin.

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