Circuit for improving compatibility of direct-current converter
By combining high-frequency and low-frequency DC-DC conversion modules and converter switching modules, the compatibility problem of traditional DC-DC converters in variable power environments is solved, enabling flexible response to sudden loads and reducing maintenance workload and downtime risk.
Patent Information
- Application Number
- CN202520035988.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Traditional DC-DC converters have poor compatibility when facing changing power environments and sudden loads, resulting in a large workload for maintenance, and a single overload protection mechanism is difficult to cope with complex user needs.
High-frequency and low-frequency DC-DC converter modules and converter switching modules are adopted. Switching between modules is achieved through single-pole double-throw switches and diodes. Combined with energy storage capacitors, it is ensured that the appropriate converter module is selected for power supply under different load conditions.
It improves the compatibility of DC-DC converters, reduces maintenance frequency, ensures continuous server operation under sudden loads, and reduces the risk of downtime.
Smart Images
Figure CN223744428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to computer power supply and server power supply technical field, concretely relates to a circuit that improves compatibility of direct current converter. BACKGROUND
[0002] The single direct current converter is generally used in the traditional server power supply, which is simple in design but faces a series of challenges in actual use. Because the user's electrical equipment is various, and there are a large number of uncontrollable burst load conditions, such as the sudden start or shutdown of the server cluster of large data center, the instantaneous power fluctuation of high-performance computing equipment, etc., which may bring great pressure to the direct current converter.
[0003] The overload protection mechanism of the direct current converter is one of its core safety functions, which responds quickly when the input or output current exceeds the set threshold. This mechanism is usually realized by the built-in current sensor, which monitors the current size in real time and feeds back the data to the control unit. Once the mechanism detects abnormal current, the control unit will immediately trigger the protection measures, such as reducing the output power, cutting off the power or starting the standby power, etc., to prevent the direct current converter from being damaged due to overheating or overload. However, in the face of frequent and unpredictable burst load, this single overload protection mechanism often appears to be inadequate, and it is difficult to ensure the continuous and stable work of the direct current converter in the complex and changeable power environment.
[0004] More difficultly, the direct current converter optimized for a particular user often shows great inadaptability when dealing with the power conditions of other users. The electrical equipment, load characteristics and power habits of each user are different, which leads to a huge difference in the performance of the direct current converter in actual application. In order to meet the needs of different users, it is often necessary to maintain and adjust the direct current converter according to the user's needs, which greatly increases the workload of maintaining and adjusting the direct current converter and consumes a lot of human and material resources.
[0005] Therefore, there is an urgent need to provide a circuit that can improve the compatibility of the direct current converter. UTILITY MODEL CONTENT
[0006] The utility model aims at providing a circuit that can improve the compatibility of the direct current converter to solve the above problems existing in the prior art.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] The utility model provides a circuit that can improve the compatibility of the direct current converter, which comprises a high-frequency direct current conversion module, a low-frequency direct current conversion module and a converter switching module.
[0009] The input end of the high-frequency DC conversion module is electrically connected with a DC power supply, the output end of the high-frequency DC conversion module is electrically connected with the first input end of the converter switching module, the input end of the low-frequency DC conversion module is electrically connected with a DC power supply, the output end of the low-frequency DC conversion module is electrically connected with the second input end of the converter switching module, and the output end of the converter switching module is electrically connected with the power supply end of a load.
[0010] In a possible design, the converter switching module includes a single-pole double-throw switch.
[0011] The single-pole double-throw switch includes a moving terminal, a first stationary terminal and a second stationary terminal.
[0012] The first stationary terminal of the single-pole double-throw switch is electrically connected with the output end of the high-frequency DC conversion module as the first input end of the converter switching module, the second stationary terminal of the single-pole double-throw switch is electrically connected with the output end of the low-frequency DC conversion module as the second input end of the converter switching module, and the moving terminal of the single-pole double-throw switch is electrically connected with the power supply end of a load as the output end of the converter switching module.
[0013] In a possible design, a fifth diode and a sixth diode are further included.
[0014] The fifth diode is electrically connected between the first stationary terminal of the single-pole double-throw switch and the moving terminal of the single-pole double-throw switch, and the sixth diode is electrically connected between the second stationary terminal of the single-pole double-throw switch and the moving terminal of the single-pole double-throw switch.
[0015] In a possible design, an energy storage capacitor is further included.
[0016] One end of the energy storage capacitor is electrically connected with the moving terminal of the single-pole double-throw switch, and the other end of the energy storage capacitor is grounded.
[0017] In a possible design, the DC power supply includes a first DC power supply and a second DC power supply.
[0018] The input end of the high-frequency DC conversion module is electrically connected with the first DC power supply and the second DC power supply respectively, and the input end of the low-frequency DC conversion module is electrically connected with the first DC power supply and the second DC power supply respectively.
[0019] In a possible design, a first diode is electrically connected between the first direct current power supply and the high-frequency direct current conversion module, a third diode is electrically connected between the first direct current power supply and the low-frequency direct current conversion module, a second diode is electrically connected between the second direct current power supply and the high-frequency direct current conversion module, and a fourth diode is electrically connected between the second direct current power supply and the low-frequency direct current conversion module.
[0020] In a possible design, the high-frequency direct current conversion module comprises a high-frequency DC-DC converter.
[0021] The input end of the high-frequency DC-DC converter is electrically connected with a direct current power supply, and the output end of the high-frequency DC-DC converter is electrically connected with the first input end of the converter switching module.
[0022] In a possible design, the low-frequency direct current conversion module comprises a low-frequency DC-DC converter.
[0023] The input end of the low-frequency DC-DC converter is electrically connected with a direct current power supply, and the output end of the low-frequency DC-DC converter is electrically connected with the second input end of the converter switching module.
[0024] In a possible design, the high-frequency DC-DC converter adopts a chip of model MM4101, and the low-frequency DC-DC converter adopts a chip of model LM2596.
[0025] Beneficial effects: The utility model provides a kind of circuit for improving compatibility of direct current converter, including high-frequency direct current conversion module, low-frequency direct current conversion module and converter switching module;Wherein, the input end of high-frequency direct current conversion module is electrically connected with direct current power supply, the output end of high-frequency direct current conversion module is electrically connected with the first input end of converter switching module, the input end of low-frequency direct current conversion module is electrically connected with direct current power supply, the output end of low-frequency direct current conversion module is electrically connected with the second input end of converter switching module, and the output end of converter switching module is electrically connected with the power supply end of load.High-frequency direct current conversion module and low-frequency direct current conversion module are different in performance, different load situations can be coped with, in actual use, if the high-frequency direct current conversion module being working appears stoppage due to sudden load when user uses, user can select low-frequency direct current conversion module to work by converter switching module, continue to maintain the operation of server, that is, better compatibility is realized to direct current converter. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is the functional structure block diagram of the circuit for improving compatibility of direct current converter in the utility model embodiment 1;
[0027] Figure 2The utility model discloses an improved DC converter compatibility circuit for the embodiment 2.
[0028] 1, first DC power supply;2, second DC power supply;3, high frequency DC-DC converter;4, low frequency DC-DC converter;5, single pole double throw switch;
[0029] D1, first diode;D2, second diode;D3, third diode;D4, fourth diode;D5, fifth diode;D6, sixth diode;C1, energy storage capacitor. DETAILED DESCRIPTION
[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the utility model will be briefly introduced below with the description of the drawings and embodiments or prior art, and obviously, the following description of the structure of the drawings is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.In this, it is necessary to explain that the explanation of these embodiment modes is used to help understanding the utility model, but does not constitute the limitation of the utility model.
[0031] It should be understood that although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element can be called a second element, and similarly, a second element can be called a first element without departing from the scope of the example embodiments of the utility model.
[0032] It should be understood that for the term "and / or" that can appear in this paper, it is only a description of the association relationship of the associated object, which means that there can be three kinds of relationships, for example, A and / or B, which means that there are three cases of A alone, B alone and A and B together;For the term "and" that can appear in this paper, it is another description of the relationship of another associated object, which means that there can be two kinds of relationships, for example, A and B, which means that there are two cases of A alone and A and B together;In addition, for the character " / " that can appear in this paper, it generally means that the associated objects before and after are an "or" relationship.
[0033] Embodiment 1
[0034] As Figure 1 shown, the embodiment provides an improved DC converter compatibility circuit, which comprises a high-frequency DC conversion module, a low-frequency DC conversion module and a converter switching module.
[0035] The input end of the high-frequency direct-current conversion module is electrically connected with a direct-current power supply, the output end of the high-frequency direct-current conversion module is electrically connected with the first input end of the converter switching module, the input end of the low-frequency direct-current conversion module is electrically connected with the direct-current power supply, the output end of the low-frequency direct-current conversion module is electrically connected with the second input end of the converter switching module, and the output end of the converter switching module is electrically connected with the power supply end of the load.
[0036] The high-frequency direct-current conversion module and the low-frequency direct-current conversion module are two independent direct-current converter working modules; the high-frequency direct-current conversion module can be considered as a DC-DC conversion circuit with high performance, high conversion efficiency and large working power, and is currently the mainstream direct-current conversion selection, so in normal user use scenarios, the high-frequency direct-current conversion module is preferentially selected for work, and the high-frequency direct-current conversion module can provide long-time high-power output for the load server; however, the high-frequency direct-current conversion module also has certain disadvantages, and in the face of sudden load, the resistance is relatively weak, and the server is prone to shutdown due to overload protection, and at this time, the low-frequency direct-current conversion module needs to be involved, which can be considered as a DC-DC conversion circuit with weak performance, low conversion efficiency and small working power, but the resistance to sudden load is stronger, and can withstand the overload current generated by the sudden load for a long time, so in the case of sudden load, the user can select the low-frequency direct-current conversion module for work through the converter switching module to ensure that the server does not shut down and other problems, and the circuit provided in the embodiment simultaneously includes the high-frequency direct-current conversion module and the low-frequency direct-current conversion module, and can be selected and switched by the user as needed, greatly improving the compatibility of the direct-current converter, and making the use of the direct-current converter simpler and not needing frequent maintenance and adjustment.
[0037] Embodiment 2:
[0038] As shown in Figure 2 , the embodiment provides a circuit for improving the compatibility of a direct-current converter, and in a possible implementation manner, the converter switching module includes a single-pole double-throw switch 5.
[0039] The single-pole double-throw switch 5 includes a moving end, a first fixed end and a second fixed end.
[0040] The first fixed end of the single-pole double-throw switch 5 is electrically connected with the output end of the high-frequency direct-current conversion module as the first input end of the converter switching module, the second fixed end of the single-pole double-throw switch 5 is electrically connected with the output end of the low-frequency direct-current conversion module as the second input end of the converter switching module, and the moving end of the single-pole double-throw switch 5 is electrically connected with the power supply end of the load as the output end of the converter switching module.
[0041] The moving end of the single-pole double-throw switch 5, i.e., the "blade", can be controlled to swing to select different fixed ends to be connected. When the handle of the switch is operated, the moving end is closed with one fixed end and disconnected with the other fixed end, so as to select different direct-current conversion modules to be connected.
[0042] In a possible implementation, the circuit further includes a fifth diode D5 and a sixth diode D6.
[0043] The fifth diode D5 is electrically connected between the first fixed end of the single-pole double-throw switch 5 and the moving end of the single-pole double-throw switch 5, and the sixth diode D6 is electrically connected between the second fixed end of the single-pole double-throw switch 5 and the moving end of the single-pole double-throw switch 5.
[0044] In a normal working condition, the moving end of the single-pole double-throw switch 5 is connected with the first fixed end, so that the high-frequency direct-current conversion module serves as the main power supply and directly outputs to the load server through the single-pole double-throw switch 5 without passing through the fifth diode D5, and the low-frequency direct-current conversion module serves as the standby power supply and outputs through the sixth diode D6. In this working condition, the circuit provided in this embodiment can provide long-time and high-power output for the load server, but the ability to resist sudden load is slightly poor.
[0045] When a sudden load occurs, the high-frequency direct-current conversion module cannot bear the load, the output voltage drops, and overload protection is generated, so that the high-frequency direct-current conversion module cannot normally provide the working voltage required by the load server. At this time, the sixth diode D6 is turned on, and the low-frequency direct-current conversion module plays an auxiliary power supply role.
[0046] In a special working condition, the moving end of the single-pole double-throw switch 5 is connected with the second fixed end, so that the low-frequency direct-current conversion module serves as the main power supply and directly outputs to the load server through the single-pole double-throw switch 5 without passing through the sixth diode D6, and the high-frequency direct-current conversion module serves as the standby power supply and outputs through the fifth diode D5. In this working condition, the circuit provided in this embodiment has relatively low output efficiency, but can bear a sudden load for a long time and ensure the normal operation of the load server.
[0047] When the power consumption is very high, the low-frequency direct-current conversion module cannot normally provide the working voltage required by the load server due to the low efficiency and large heat generation, and the output voltage drops. At this time, the fifth diode D5 is turned on, and the high-frequency direct-current conversion module plays an auxiliary power supply role.
[0048] In a possible implementation, the circuit further includes an energy storage capacitor C1.
[0049] One end of the energy storage capacitor C1 is electrically connected with the moving end of the single-pole double-throw switch 5, and the other end of the energy storage capacitor C1 is grounded.
[0050] The presence of the energy storage capacitor C1 can make the conduction process of the fifth diode D5 and the sixth diode D6 more moderate, so as to avoid large fluctuations of the output voltage.
[0051] In a possible implementation, the direct current power supply includes a first direct current power supply 1 and a second direct current power supply 2.
[0052] The input end of the high-frequency direct current conversion module is electrically connected to the first direct current power supply 1 and the second direct current power supply 2 respectively, and the input end of the low-frequency direct current conversion module is electrically connected to the first direct current power supply 1 and the second direct current power supply 2 respectively.
[0053] In actual application scenarios, two direct current power supply modules are used to provide direct current power supply for the server power supply, which is mainly because the power supply of the server is the basis for its normal operation. The design of two direct current power supply modules can make the other power supply take over the power supply immediately when one power supply fails, ensuring the continuous operation of the server. This redundant design can avoid system downtime caused by single power supply failure and improve the reliability of the system.
[0054] In a possible implementation, a first diode D1 is electrically connected between the first direct current power supply 1 and the high-frequency direct current conversion module, a third diode D3 is electrically connected between the first direct current power supply 1 and the low-frequency direct current conversion module, a second diode D2 is electrically connected between the second direct current power supply 2 and the high-frequency direct current conversion module, and a fourth diode D4 is electrically connected between the second direct current power supply 2 and the low-frequency direct current conversion module.
[0055] The first diode D1 and the third diode D3 are used to isolate the first direct current power supply 1 in time when the first direct current power supply 1 fails, so as to avoid the influence of the first direct current power supply 1 on the server load. Correspondingly, the second diode D2 and the fourth diode D4 are used to isolate the second direct current power supply 2 in time when the second direct current power supply 2 fails, so as to avoid the influence of the second direct current power supply 2 on the server load.
[0056] In a possible implementation, the high-frequency direct current conversion module includes a high-frequency DC-DC converter 3.
[0057] The input end of the high-frequency DC-DC converter 3 is electrically connected to the direct current power supply, and the output end of the high-frequency DC-DC converter 3 is electrically connected to the first input end of the converter switching module.
[0058] In a possible implementation, the low-frequency direct current conversion module includes a low-frequency DC-DC converter 4.
[0059] The input end of the low-frequency DC-DC converter 4 is electrically connected with a direct current power supply, and the output end of the low-frequency DC-DC converter 4 is electrically connected with the second input end of the converter switching module.
[0060] In a possible implementation, the high-frequency DC-DC converter 3 adopts a chip of model MM4101, and the low-frequency DC-DC converter 4 adopts a chip of model LM2596.
[0061] Finally, it should be noted that: the above only for the preferred embodiments of the present application have, and is not used to limit the scope of protection of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.
Claims
1. A circuit for improving compatibility of DC converter, comprising: a high-frequency DC conversion module, a low-frequency DC conversion module and a converter switching module; wherein an input end of the high-frequency DC conversion module is electrically connected to a DC power supply, an output end of the high-frequency DC conversion module is electrically connected to a first input end of the converter switching module, an input end of the low-frequency DC conversion module is electrically connected to the DC power supply, an output end of the low-frequency DC conversion module is electrically connected to a second input end of the converter switching module, and an output end of the converter switching module is electrically connected to a power supply end of a load; the converter switching module comprises a single-pole double-throw switch (5); wherein the single-pole double-throw switch (5) comprises a moving end, a first fixed end and a second fixed end; the first fixed end of the single-pole double-throw switch (5) is electrically connected to the output end of the high-frequency DC conversion module as the first input end of the converter switching module, the second fixed end of the single-pole double-throw switch (5) is electrically connected to the output end of the low-frequency DC conversion module as the second input end of the converter switching module, and the moving end of the single-pole double-throw switch (5) is electrically connected to the power supply end of the load as the output end of the converter switching module; further comprising a fifth diode (D5) and a sixth diode (D6); wherein the fifth diode (D5) is electrically connected between the first fixed end of the single-pole double-throw switch (5) and the moving end of the single-pole double-throw switch (5), and the sixth diode (D6) is electrically connected between the second fixed end of the single-pole double-throw switch (5) and the moving end of the single-pole double-throw switch (5); further comprising an energy storage capacitor (C1); wherein one end of the energy storage capacitor (C1) is electrically connected to the moving end of the single-pole double-throw switch (5), and the other end of the energy storage capacitor (C1) is grounded.
2. The circuit for improving compatibility of DC converter according to claim 1, wherein the DC power supply comprises a first DC power supply (1) and a second DC power supply (2); wherein the input end of the high-frequency DC conversion module is electrically connected to the first DC power supply (1) and the second DC power supply (2) respectively, and the input end of the low-frequency DC conversion module is electrically connected to the first DC power supply (1) and the second DC power supply (2) respectively.
3. The circuit for improving compatibility of DC converter according to claim 2, wherein a first diode (D1) is electrically connected between the first DC power supply (1) and the high-frequency DC conversion module, a third diode (D3) is electrically connected between the first DC power supply (1) and the low-frequency DC conversion module, a second diode (D2) is electrically connected between the second DC power supply (2) and the high-frequency DC conversion module, and a fourth diode (D4) is electrically connected between the second DC power supply (2) and the low-frequency DC conversion module.
4. The circuit for improving compatibility of DC converter according to claim 1, wherein the high-frequency DC conversion module comprises a high-frequency DC-DC converter (3). The input end of the high-frequency DC-DC converter (3) is electrically connected with a direct-current power supply, and the output end of the high-frequency DC-DC converter (3) is electrically connected with the first input end of the converter switching module.
5. The circuit for improving compatibility of direct-current converters according to claim 4, characterized in that, The low-frequency direct-current conversion module comprises a low-frequency DC-DC converter (4). The input end of the low-frequency DC-DC converter (4) is electrically connected with a direct-current power supply, and the output end of the low-frequency DC-DC converter (4) is electrically connected with the second input end of the converter switching module.
6. The circuit for improving compatibility of direct-current converters according to claim 5, characterized in that, The high-frequency DC-DC converter (3) adopts a chip of model MM4101, and the low-frequency DC-DC converter (4) adopts a chip of model LM2596.