Alternating current and direct current hybrid power supply circuit

Abstract

The utility model discloses an alternating current and direct current hybrid power supply circuit, two redundant power supply modules of a server are replaced by an alternating current power supply module and a direct current power supply module, the alternating current power supply module is electrically connected with an alternating current power distribution box and directly provides an alternating current power supply for the server; therefore, when the alternating current is used for supplying power, the power does not pass through the UPS any more, and the loss and the cost can be remarkably reduced; meanwhile, alternating current output by the alternating current distribution box is converted into low-voltage direct current through the alternating current-direct current converter; then, the low-voltage direct current is sent to a direct-current power supply module on the server for use, and direct-current power supply of the server can be completed; on the basis of this, compared with the traditional technology, an inversion link is omitted, and the loss is further reduced; therefore, the complexity of the power distribution system of the machine room can be greatly reduced, so that the loss and the cost can be reduced while the reliability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of server power supply, specifically relates to a AC-DC hybrid power supply circuit. BACKGROUND

[0002] In order to improve the power supply reliability, the modern internet server room is usually configured with multiple groups of large online UPS and uses the redundant power supply composed of two power supply units for power supply;Among them, the power supply process of the traditional online UPS scheme is: after the alternating current is rectified by UPS, it becomes direct current, connects with the battery pack, and then is inverted into alternating current, and is supplied to the server configured with the alternating current power module;So, in this process, there are multiple alternating current-direct current, direct current-alternating current repeated conversion, based on this, not only a large amount of loss will be generated, energy is wasted, and because of repeated conversion, the equipment is numerous, also increases the cost and reduces the reliability of the whole equipment;Therefore, based on the foregoing deficiencies, how to provide a AC-DC hybrid power supply circuit with small loss, low cost and high reliability has become a problem to be solved. SUMMARY

[0003] The utility model discloses a AC-DC hybrid power supply circuit, to solve the problem of the prior art that a large amount of loss will be generated, cost is high and the reliability is low.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] First, a AC-DC hybrid power supply circuit is provided, comprising:

[0006] A plurality of alternating current power modules and a plurality of direct current power modules, wherein each server is respectively configured with an alternating current power module and a direct current power module, the input end of each alternating current power module is electrically connected with an alternating current distribution box, and the output end of each alternating current power module is electrically connected with the power supply end of the corresponding server;

[0007] The input end of each direct current power module is electrically connected with the alternating current distribution box through an alternating current-direct current converter, and the output end of each direct current power module is electrically connected with the power supply end of the corresponding server.

[0008] Based on the above disclosure, the utility model discloses two redundant power modules of server are replaced for AC power module and DC power module, wherein, AC power module electricity connects AC distribution box, and directly provides AC power supply for server, so that when using AC power supply, no longer through UPS, can significantly reduce the loss and cost, simultaneously, the AC of AC distribution box output converts into low voltage DC through AC-DC converter, then, low voltage DC is sent to the DC power module on the server and uses, namely can complete the DC power supply of server, based on this, compared with traditional technology, the utility model omits the inverter link, further reduces the loss, thereby, the complexity of computer lab distribution system can be reduced greatly, thereby can improve the equipment reliability, and reduce the loss and cost.

[0009] In one possible design, each AC power module is electrically connected to the AC distribution box through an AC distributor.

[0010] In one possible design, further comprising: a DC distributor, wherein the output end of the alarm module is electrically connected to the input end of the AC-DC converter, the output end of the AC-DC converter is electrically connected to the input end of the DC distributor, and the output end of the DC distributor is electrically connected to the input end of each DC power module.

[0011] In one possible design, further comprising: a DC battery pack, wherein the output end of the DC battery pack is electrically connected to the input end of each DC power module.

[0012] In one possible design, further comprising: a battery management unit, wherein the output end of the DC battery pack is electrically connected to the input end of the battery management unit, and the output end of the battery management unit is electrically connected to the input end of each DC power module.

[0013] In one possible design, further comprising: a DC distributor, wherein the output end of the battery management unit is electrically connected to the input end of the DC distributor, and the output end of the DC distributor is electrically connected to the input end of each DC power module.

[0014] In one possible design, further comprising: a charging module, wherein the input end of the charging module is electrically connected to the output end of the AC distribution box, and the output end of the charging module is electrically connected to the charging end of the DC battery pack.

[0015] In one possible design, the charging module is electrically connected to the DC battery pack through a battery management unit.

[0016] In one possible design, the charging module adopts a battery charger.

[0017] In one possible design, the rated voltage of each DC power module is 48V.

[0018] Advantages:

[0019] (1) The two redundant power modules of the server are replaced by an AC power module and a DC power module, wherein the AC power module is electrically connected to an AC distribution box and directly provides AC power for the server; in this way, when AC power is used, the server no longer needs to pass through a UPS, which can significantly reduce the loss and cost; at the same time, the AC power output by the AC distribution box is converted into low-voltage DC through an AC-DC converter; then, the low-voltage DC is supplied to the DC power module on the server for use, thereby completing the DC power supply for the server; based on this, compared with the prior art, the utility model omits the inverter link, further reducing the loss; thus, the complexity of the power distribution system of the computer room can be greatly reduced, thereby improving the reliability of the equipment while reducing the loss and cost.

[0020] (2) In the utility model, the AC power module and the DC power module can also constitute a redundant power supply, that is, when the AC power is normal, the server uses the AC power module for power supply, and when the AC power is abnormal, the DC battery pack is used to supply power to the DC power module; in this way, the reliability of use is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure diagram of the AC-DC hybrid power supply circuit provided by the utility model embodiment. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation on the utility model.

[0023] It should be understood that although the terms first, second, etc. can be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, a first unit can be called a second unit, and similarly a second unit can be called a first unit, without departing from the scope of the example embodiments of the utility model.

[0024] It should be understood that, for the term "and / or" that can appear in the present text, it is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A exists alone, B exists alone, and A and B exist together; for the term " / and" that can appear in the present text, it is another description of the association relationship of another associated object, which means that there can be two relationships, for example, A / and B, which can represent two cases: A exists alone, and A and B exist together; in addition, for the character " / " that can appear in the present text, it generally represents an "or" relationship between the associated objects before and after it.

[0025] Embodiment:

[0026] Referring to Figure 1 It is shown that the AC-DC hybrid power supply circuit provided by the embodiment discards the traditional power supply scheme using UPS power supply, and instead uses AC power supply modules and DC power supply modules to replace the two redundant power supplies of the server, and directly supplies power using AC power; in this way, a low-cost, low-loss and high-reliability power supply circuit is constructed.

[0027] In specific implementation, one of the following circuit structures of the aforementioned AC-DC hybrid power supply circuit is disclosed:

[0028] In the embodiment, referring to Figure 1 It is shown that, for example, the AC-DC hybrid power supply circuit can include, but is not limited to, an AC-DC converter, a plurality of AC power supply modules, and a plurality of DC power supply modules (48V DC modules in Figure 1 Each server is respectively configured with an AC power supply module and a DC power supply module, the input end of each AC power supply module is electrically connected to an AC distribution box, and the output end of each AC power supply module is electrically connected to the power supply end of the corresponding server; in this way, the AC power supply module of each server is directly powered by the AC distribution box, and during the power supply process, it does not need to pass through the UPS, based on which, the power supply circuit does not need to be set up. UPS, not only can significantly reduce the loss, but also can reduce the cost.

[0029] At the same time, each server can also be powered by DC, that is, the input end of each DC power supply module is respectively electrically connected to the AC distribution box through the AC-DC converter, and the output end of each DC power supply module is electrically connected to the power supply end of the corresponding server; based on this, the DC power supply process is that the AC power output by the AC distribution box is converted by the AC-DC converter to output 48V low-voltage DC, which is then directly sent to the DC power supply module on each server for use, and ultimately the DC power supply module supplies power to the server; based on this, compared with the traditional online UPS power supply circuit, the embodiment omits the inverter link, not only reduces the equipment required for power supply, improves the reliability of the circuit, but also further reduces the loss.

[0030] Based on this, see Figure 1 As shown, when the AC power modules are working normally, the AC power distribution box outputs AC power to each AC power module, thus providing AC power to the server. When the AC power modules malfunction, the system can switch to DC power supply. That is, the AC power output from the AC power distribution box is converted into DC power by an AC-DC converter, and then supplied to the DC power modules on each server to provide DC power to each server. In this way, as long as one of the two modules is powered normally, the server can maintain normal operation, thereby improving the stability of the server power supply.

[0031] Through the above design, this embodiment replaces the server's two redundant power modules with an AC power module and a DC power module, and directly supplies power from the AC power source. This eliminates the need for a UPS when using AC power, significantly reducing losses and costs. Simultaneously, the AC power is converted to low-voltage DC by an AC-DC converter and then supplied via the DC power module. Based on this, compared to traditional technologies, this invention omits the inverter stage, further reducing losses. Therefore, the complexity of the data center power distribution system is significantly reduced, thereby improving equipment reliability while reducing losses and costs.

[0032] In one specific implementation, the aforementioned AC / DC hybrid power supply circuit may also include, but is not limited to, an AC power distributor and a DC power distributor.

[0033] Among them, see Figure 1 As shown, each AC power module is electrically connected to the AC power distribution box via an AC power distributor; thus, the AC power output from the AC power distribution box can be distributed to different AC power modules through the AC power distributor to ensure load balance.

[0034] Similarly, see Figure 1 As shown, the output terminal of the AC power distribution box is electrically connected to the input terminal of the AC-DC converter, the output terminal of the AC-DC converter is electrically connected to the input terminal of the DC power distributor, and the output terminal of the DC power distributor is electrically connected to the input terminal of each DC power module. Based on this, the DC power distributor can distribute the converted low-voltage DC to the DC power modules on each server, thereby ensuring uniform DC voltage distribution and avoiding overload of any server.

[0035] Furthermore, examples include, but are not limited to, the YKDPZ-A2-10 and YKDPZ-A2-8 DC power distributors, as well as the Changchen XCDT AC power distributor. Of course, the specific model can be selected according to the actual use, and is not limited to the examples mentioned above.

[0036] Further, the embodiment also provides a DC battery pack for the AC-DC hybrid power supply circuit; referring to Figure 1 the output end of the DC battery pack is electrically connected to the input end of each DC power module; in this way, the DC battery pack can be used as a backup power supply to supply power to each DC power module on the server when the AC power supply fails, thereby ensuring the normal operation of each server; for example, the rated voltage of the DC battery pack and each DC power module is 48V; of course, battery packs with different voltages can also be provided according to actual use, and the foregoing example is not limited.

[0037] Further, to realize the power supply management of the battery pack, the embodiment also provides a battery management unit,

[0038] referring to Figure 1 the output end of the DC battery pack is electrically connected to the input end of the battery management unit, and the output end of the battery management unit is electrically connected to the input end of each DC power module; specifically, the DC power distributor is also used to electrically connect each DC power module (i.e., the output end of the battery management unit is electrically connected to the input end of the DC power distributor, and the output end of the DC power distributor is respectively electrically connected to the input end of each DC power module); in this way, the battery management unit can be used to monitor the voltage, current, temperature and state of charge (SOC) of the DC battery pack in real time, thereby realizing the discharge management of the DC battery pack to prevent over-discharge of the battery; at the same time, the battery temperature can also be monitored, and an alarm prompt can be given when the temperature is too high; of course, appropriate protective measures can also be taken when the DC battery pack is short-circuited, overcharged, over-discharged or overheated to avoid safety accidents.

[0039] For example, but not limited to, LN4092K421 DR-G PMU type battery management unit, BQ24725ARGRR type battery management unit, etc. can be used, and of course, the specific model can be selected according to actual use, and the foregoing example is not limited.

[0040] In one possible design, the embodiment also provides a charging module for the DC battery pack; referring to Figure 1 the input end of the charging module is electrically connected to the output end of the AC power distribution box, and the output end of the charging module is electrically connected to the charging end of the DC battery pack; in this way, the AC power distribution box and the charging module can be used to charge the DC battery pack, thereby ensuring that the DC battery pack has sufficient power and uninterrupted power supply to the server.

[0041] Of course, in the embodiment, the charging module is also electrically connected to the DC battery pack through the battery management unit, so as to realize the charging management of the DC battery pack based on the battery management unit.

[0042] Optionally, the charging module may be, but is not limited to, a battery charger such as a KECD-G series charger, etc. Thus, the battery charger can be used to complete the charging of the DC battery pack.

[0043] Thus, the DC power module and the AC power module substantially constitute a redundant power supply. Because of the working principle of the redundant power supply, the server can operate normally as long as one of the two modules supplies power normally. Specifically, after hybrid power supply, when the AC power supply is normal, the AC power module can supply the server to operate normally. When the AC power supply is abnormal, the 48V DC battery pack can supply the server to operate normally.

[0044] Through the above description, the two redundant power supply modules of the server are replaced by the AC power module and the 48V DC power module, and are uniformly supplied by the AC power distribution box. In this way, the AC power supply no longer passes through the UPS, and the AC power is converted into DC power for power supply, and does not need to be inverted. Based on this, the complexity of the computer room power distribution system is greatly reduced, the reliability can be improved at the same time, the cost is reduced, and the energy is saved. Therefore, the utility model is very suitable for large-scale application and promotion.

[0045] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hybrid AC / DC power supply circuit, characterized in that, The application relates to an alternating current and direct current power supply system for servers. The input end of each alternating current power supply module is electrically connected with an alternating current distribution box, and the output end of each alternating current power supply module is electrically connected with the power supply end of the corresponding server. The input end of each direct current power supply module is electrically connected with the alternating current distribution box through an alternating current-direct current converter, and the output end of each direct current power supply module is electrically connected with the power supply end of the corresponding server.

2. The AC / DC hybrid power supply circuit according to claim 1, wherein The alternating current distribution box is electrically connected with the alternating current-direct current converter, the output end of the alternating current-direct current converter is electrically connected with the input end of a direct current distribution device, and the output end of the direct current distribution device is electrically connected with the input end of each direct current power supply module.

3. The AC / DC hybrid power supply circuit according to claim 1, wherein The direct current battery pack is electrically connected with the input end of each direct current power supply module. The battery management unit is electrically connected with the output end of the direct current battery pack, and the output end of the battery management unit is electrically connected with the input end of each direct current power supply module.

4. The AC / DC hybrid power supply circuit according to claim 1, wherein The battery management unit is electrically connected with the input end of the direct current distribution device, and the output end of the direct current distribution device is electrically connected with the input end of each direct current power supply module. The charging module is electrically connected with the output end of the alternating current distribution box, and the output end of the charging module is electrically connected with the charging end of the direct current battery pack.

5. The AC / DC hybrid power supply circuit according to claim 4, wherein The charging module is electrically connected with the direct current battery pack through the battery management unit. The charging module adopts a battery charger.

6. The AC / DC hybrid power supply circuit according to claim 5, wherein The rated voltage of each direct current power supply module is 48 V. ​ 7. The AC / DC hybrid power supply circuit according to claim 4, wherein ​ ​ 8. The AC / DC hybrid power supply circuit according to claim 7, wherein ​ 9. The AC / DC hybrid power supply circuit according to claim 7, wherein ​ 10. The AC / DC hybrid power supply circuit according to claim 1, wherein ​

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