A centralized power supply system applied to an immersion liquid cooling system

Abstract

The utility model relates to a centralized power supply system applied to the immersion liquid cooling system, the whole is modularized layout, including the busbar, power module case, the power supply and the claw, the busbar design is long strip, the busbar surface is equipped with recessed slot type clamping groove, inside integrated positive and negative electrode conduction passage, the power module case is the cuboid box shape, is equipped with 10 pluggable power module in the top, the bottom middle position installs the power supply and the claw matched with the busbar recessed slot type clamping groove. This power supply system passes through the multiple cable access power module case, after the combination road, by the power supply and the claw transmission positive and negative electrode power supply to the busbar, and the electric equipment such as server realizes the electrification, adapts the immersion liquid cooling environment, has high reliability, the maintainability and the strong compatibility, effectively reduces the power supply complexity in the liquid cooling system, promotes the power distribution efficiency and the operation convenience under the high density computing power scene, reduces the additional power redundancy through the centralized combination road design simultaneously, reduces the overall cost.

Description

Technical Field

[0001] This utility model belongs to the field of centralized power supply technology for liquid cooling systems, and specifically relates to a centralized power supply system applied to immersion liquid cooling systems. Background Technology

[0002] Currently, the power supply schemes for immersion liquid cooling systems are mainly divided into two categories: traditional distributed power supply and simple bus power supply.

[0003] Traditional distributed power supply: Each server comes with its own independent power supply module (such as a 2+2 redundant power supply, i.e., 2 working power supplies + 2 backup power supplies), which draws power directly from the data center's PDU (Power Distribution Unit). The power supply module is integrated with the server. For example, an 8-GPU server requires 4 power supply modules (2+2 redundancy), with a single server requiring 4 power supply modules. If there are 10 servers in the rack, then 40 power supply modules are needed.

[0004] Disadvantages: The large number of power supply modules results in extremely high redundancy costs. Each server requires an independent redundant power supply, leading to a large total power supply volume. Furthermore, individual power supply modules have low power output, resulting in high procurement and maintenance costs. The distributed design fails to achieve centralized power redundancy; each server needs an independent backup power supply, making it impossible to share redundant resources.

[0005] Simple bus power supply The system uses open-type copper busbars as the power distribution carrier. The copper busbars are installed on the side of the liquid-cooled cabinet, and the servers are connected to the copper busbars via cables to draw power. This relies on the cabinet shell or air insulation and is not optimized for the liquid-cooled environment. For example, in some liquid-cooled projects, bare copper busbars are directly placed inside the liquid-cooled cabinet, and the servers are connected to the copper busbars via quick-connect plugs, without centralized circuit combining or redundancy design.

[0006] Disadvantages: The cabling is messy, resulting in low space utilization. Servers are connected to the busbar via cables, requiring two thick cables (positive and negative terminals) per server. The number of cables in the rack exceeds 20, and the tangled cabling obstructs airflow / fluid flow, reducing local flow velocity and affecting server heat dissipation. Because there is no centralized power supply interface, servers and busbars require independent cabling, failing to achieve a truly "cableless" connection.

[0007] Lack of centralized combining circuitry, difficulty in redundancy configuration, and low reliability: The simplified busbar only serves as a power transmission carrier and lacks power module combining functionality. If redundancy is required, dual busbars must be configured, doubling the cost. Furthermore, the server power supply lacks overload protection; a short circuit in a single server may cause the entire busbar to lose power. Reason: The lack of centralized combining and protection circuitry makes it impossible to achieve power module-level redundancy switching and fault isolation. Utility Model Content

[0008] The purpose of this utility model is to solve the above-mentioned problems. This application proposes a centralized power supply system for immersion liquid cooling systems, which integrates a centralized power module chassis, busbar, and pluggable power modules to reduce additional power redundancy, lower overall costs, effectively reduce the power supply complexity in liquid cooling systems, and improve power distribution efficiency and ease of operation and maintenance in high-density computing scenarios.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a centralized power supply system for an immersion liquid cooling system, which has a modular layout and includes a busbar, a power module chassis, and power supply and receiving claws. The busbar is designed as a long strip, and the surface of the busbar has a groove-type slot, which integrates positive and negative conductive paths inside. The power module chassis is a cuboid box shape, with 10 pluggable power modules on the top and power supply and receiving claws that match the groove-type slot of the busbar installed at the middle of the bottom.

[0010] Furthermore, the power module chassis is mounted on the busbar via a snap-fit ​​connection between the power supply and receiving claws and the grooved slot.

[0011] Furthermore, the positive and negative conductive paths inside the busbar are wrapped with an insulating material resistant to liquid cooling medium corrosion.

[0012] Furthermore, the pluggable power module includes an AC-DC conversion circuit, a hot-swappable control unit, and status indicator lights.

[0013] Furthermore, the power supply and receiving claws are elastic metal contacts and are gold-plated.

[0014] Furthermore: the power module chassis is sized to fit the U-position of a liquid-cooled cabinet, with a width of 2U.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This system reduces the total power consumption by centrally combining and sharing redundant power modules. The busbars feature independent positive and negative paths, with the positive and negative terminals encased in insulating material resistant to liquid cooling corrosion, ensuring no short-circuit risk in the insulating coolant. The top of the power module chassis can accommodate 10 pluggable power modules, while the bottom has power supply and receiving claws electrically connected to the busbars, forming a hierarchical power supply architecture of "power module - combining chassis - busbar - server". Adaptable to immersion liquid cooling environments, it boasts high reliability, ease of maintenance, and strong compatibility, effectively reducing the power supply complexity within liquid cooling systems and improving power distribution efficiency and ease of maintenance in high-density computing scenarios.

[0016] The busbar is made of a composite of conductive metal and liquid-cooled medium material. The power supply and receiving claws use elastic contacts and are gold-plated to ensure high conductivity and corrosion resistance in insulating coolant.

[0017] It supports multiple power inputs and N+1 redundancy combining, and achieves uninterrupted maintenance through hot-swappable power modules. The server can quickly draw power by inserting the bottom power receiving claw into the bus groove, which is suitable for the compact space and low maintenance requirements of immersion liquid-cooled cabinets, while reducing additional power redundancy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions in the embodiments of this utility model or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of the busbar of this utility model; Figure 3 This is a side view of the busbar structure of this utility model; Figure 4 This is a schematic diagram of the structure of the power supply and receiving claw of this utility model; Figure 5 This is a schematic diagram of the pluggable power module structure of this utility model; In the diagram: 1-busbar, 101-groove slot, 2-power module chassis, 3-pluggable power module, 4-power supply and receiving claws. Detailed Implementation

[0020] To enable those skilled in the art to better understand and implement the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. However, the embodiments described are only for illustration and are not intended to limit the present utility model.

[0021] like Figures 1-5 The diagram shows a centralized power supply system for an immersion liquid cooling system. The system has a modular layout and is designed to fit the compact space of an immersion liquid cooling cabinet. It includes a busbar 1, a power module chassis 2, and power supply and receiving claws 4.

[0022] The busbar 1 is designed as a long strip and is installed at the bottom of the liquid cooler cabinet along the length of the cabinet. It has a groove-type slot 101 on its surface and integrates positive and negative conductive paths inside. The positive and negative electrodes are wrapped with insulating material that is resistant to liquid cooling medium corrosion, ensuring that there is no risk of short circuit in the insulating coolant.

[0023] The power module chassis 2 is a rectangular box shape, with a size adapted to the U-position of the liquid-cooled cabinet. It is 2U wide and has 10 pluggable power modules 3 on the top. At the bottom center, there is a power supply and receiving claw 4 that matches the groove-type slot of the busbar 1. The power module chassis has a built-in combining circuit to combine the power output of multiple pluggable power modules 3 into a single positive and negative DC power supply. It supports N+1 or 2N redundancy configuration, and the failure of a single module will not affect the overall output.

[0024] The power supply and receiving claws 4 are elastic metal contacts and are gold-plated to improve conductivity and corrosion resistance. The power supply claw is installed at the bottom of the power module chassis, and the receiving claw is a plug that matches the busbar groove slot.

[0025] Preferably, the power module chassis 2 is mounted on the busbar 1 by the snap-fit ​​of the power supply and receiving claws 4 and the groove-type slot 101.

[0026] Preferably, the pluggable power module 3 includes an AC-DC conversion circuit, a hot-swappable control unit, and status indicator lights.

[0027] Preferably, the busbar 1 is made of conductive metal copper or aluminum.

[0028] Working principle Power input and conversion: Multiple external cables are connected to the power module chassis to supply power to multiple pluggable power modules in the slots. Each power module converts the input power into a uniform DC power supply (such as 48V DC).

[0029] Power combining and redundancy optimization: The combining circuit inside the power module chassis combines the power output of multiple pluggable power modules into a single positive and negative DC power supply. Through centralized combining design, it replaces the redundancy of traditional server independent power supplies, reduces the overall number of power modules, and lowers additional redundancy costs.

[0030] Power output: The combined positive and negative power supplies are transmitted to the positive and negative conduction circuits of the busbar through the power supply and receiving claws at the bottom of the power module chassis. The busbar distributes the power to various locations in the cabinet through the grooved slots.

[0031] Server power supply: The power receiving claws on the bottom of the server and other electrical equipment mechanically cooperate with the grooves and slots of the busbar to achieve electrical connection. After the power receiving claws are inserted, the internal conduction mechanism is triggered to complete the transmission of electrical energy from the busbar to the server, thus powering the equipment.

[0032] Key points of this utility model Modular and hot-swappable technology: The power modules support online hot-swapping (replacement time < 3 minutes). The chassis has built-in redundant combining logic, which automatically switches to the redundant module when a single module fails, ensuring power supply continuity. At the same time, centralized combining reduces additional power redundancy and lowers the overall cost.

[0033] The grooved busbar and the flexible contact connection: The busbar groove and the power receiving claw adopt a "plug-slot" mechanical self-locking structure, which, together with the flexible contact, realizes a low impedance electrical connection and supports quick plugging and unplugging of servers (single-person manual operation), improving the efficiency of equipment racking in the liquid-cooled cabinet.

[0034] 3) Insulation and corrosion protection design adapted to liquid cooling environment: The busbar is made of materials that are resistant to corrosion by liquid cooling media (such as hydrocarbon synthetic oil), and the contact points of the receiving claw are gold-plated to ensure no leakage or corrosion in long-term immersion environment, thus solving the problem of short circuit in traditional power supply systems in liquid cooling.

[0035] All content not described in detail in this utility model is prior art.

[0036] The above description is merely a preferred embodiment of this utility model and is not limited to the description in the specification and embodiments. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the claims of this utility model should be included within the scope of this utility model patent application.

Claims

1. A centralized power supply system for an immersion liquid cooling system, comprising a modular layout including a busbar (1), a power module chassis (2), and power supply and receiving claws (4), characterized in that: The busbar (1) is designed as a long strip, and the surface of the busbar (1) is provided with a groove-type slot (101), which integrates positive and negative conductive paths inside; the power module chassis (2) is a rectangular box, with 10 pluggable power modules (3) on the top, and a power supply and receiving claw (4) matching the groove-type slot of the busbar (1) installed at the middle of the bottom.

2. The centralized power supply system for an immersion liquid cooling system according to claim 1, characterized in that: The power module chassis (2) is installed on the busbar (1) by the snap-fit ​​of the power supply and receiving claws (4) and the groove-type slot (101).

3. A centralized power supply system for an immersion liquid cooling system according to claim 1, characterized in that: The positive and negative conductive paths inside the busbar (1) are wrapped with an insulating material resistant to liquid cooling medium corrosion.

4. A centralized power supply system for an immersion liquid cooling system according to claim 1, characterized in that: The pluggable power module (3) includes an AC-DC conversion circuit, a hot-swappable control unit, and status indicator lights.

5. A centralized power supply system for an immersion liquid cooling system according to claim 1, characterized in that: The power supply and receiving claws (4) are elastic metal contacts and are gold-plated.

6. A centralized power supply system for an immersion liquid cooling system according to claim 1, characterized in that: The power module chassis (2) is sized to fit the U-position of the liquid-cooled cabinet, with a width of 2U.

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