Immersed pipeline system integrating cooling liquid and bare cable

Abstract

The invention relates to the technical field of liquid cooling, and provides an immersed pipeline system integrating cooling liquid and a bare cable, which comprises an integrated pipeline, a plurality of immersed liquid-cooled battery packs, an immersed liquid-cooled unit, an immersed liquid-cooled energy storage converter and a liquid-cooled pump, a bare wire and a cooling liquid channel are arranged in the integrated pipeline; the immersed liquid-cooled battery packs are connected in series through an integrated pipeline; the immersed liquid-cooled energy storage converter is connected with a liquid inlet of the immersed liquid-cooled unit, and the cathode of the immersed liquid-cooled energy storage converter is connected with the cathode of the immersed liquid-cooled battery pack at the tail part after series connection; the immersed liquid-cooled energy storage converter is connected with the immersed liquid-cooled battery packs at the head after series connection, and the positive electrode of the immersed liquid-cooled energy storage converter is connected with the positive electrode of the immersed liquid-cooled battery packs at the head after series connection; and the immersed liquid cooling unit drives the immersed cooling liquid to circularly cool the immersed liquid cooling battery packs and the immersed liquid cooling energy storage converters which are connected in series in sequence through the integrated pipeline. According to the immersed pipeline system, intelligent energy-saving temperature control, energy conservation and efficiency improvement and long-service-life operation can be achieved.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, and more particularly to an immersion piping system that integrates coolant and bare cable. Background Technology

[0002] Currently, traditional liquid cooling piping systems have the following technical problems: Cables and liquid cooling pipes need to be laid out separately: traditional liquid cooling systems only support the flow channels of coolant, while cables only support the power transmission channels. The two cannot be integrated, which takes up space in the layout design. Poor heat dissipation of cables: Traditional cables generate significant heat when transmitting electrical energy, relying solely on increasing the cross-sectional area of ​​copper / aluminum to ensure that the temperature rise does not exceed the range, lacking effective forced heat dissipation control.

[0003] To ensure the system's dustproof, waterproof, and moisture-proof requirements, traditional liquid cooling systems require highly protective designs for liquid cooling pipes and cable connectors, resulting in high material costs.

[0004] The cable is thicker and stiffer: In order to ensure the current carrying capacity, traditional cables are usually designed to be thicker, and at the same time, they need to be protected by an insulating and pressure-resistant outer sheath, which makes the cable thicker and stiffer. Summary of the Invention

[0005] The purpose of this invention is to solve at least one technical problem in the prior art and to provide an immersion piping system that integrates coolant and bare cable.

[0006] To achieve the above objectives, the present invention provides an integrated submersible piping system comprising: an integral piping system, multiple submersible liquid-cooled battery packs, a submersible liquid-cooled unit, a submersible liquid-cooled energy storage converter, and a liquid-cooled pump. The integrated pipe contains bare wires and coolant channels, and the submerged coolant flows outside the bare wires through the coolant channels. Each of the aforementioned submerged liquid-cooled battery packs is connected in series through an integrated pipe, and the submerged liquid-cooled battery pack at the rear is connected to the outlet of the submerged liquid-cooled unit through the coolant channel in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the inlet of the submerged liquid-cooled unit through a coolant channel in an integrated pipe, and its negative terminal is connected to the negative terminal of the submerged liquid-cooled battery pack at the rear end of the series connection through a bare wire in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the submerged liquid-cooled battery pack at the head of the series via a coolant channel in an integrated pipe, and its positive terminal is connected to the positive terminal of the submerged liquid-cooled battery pack at the head of the series via a bare wire in the integrated pipe. The submerged liquid-cooled unit drives the submerged coolant to circulate and cool the submerged liquid-cooled battery packs and submerged liquid-cooled energy storage converters connected in series through an integrated pipeline.

[0007] According to one aspect of the present invention, the integrated pipe includes: a first integrated pipe, a second integrated pipe, a third integrated pipe, a fourth integrated pipe, and a fifth integrated pipe; The immersion liquid-cooled battery pack includes: a first immersion liquid-cooled battery pack, a second immersion liquid-cooled battery pack, and a third immersion liquid-cooled battery pack; The positive terminal of the first submerged liquid-cooled battery pack is connected to the positive terminal of the submerged liquid-cooled energy storage converter through a bare wire in the first integrated pipe, and is connected to the internal cooling channel of the submerged liquid-cooled energy storage converter through a coolant channel in the first integrated pipe. The negative terminal of the first immersion liquid-cooled battery pack is connected in series with the positive terminal of the second immersion liquid-cooled battery pack through a bare wire in the second integrated pipe, and is connected to the internal cooling channel of the second immersion liquid-cooled battery pack through a coolant channel in the second integrated pipe. The negative terminal of the second immersion liquid-cooled battery pack is connected in series with the positive terminal of the third immersion liquid-cooled battery pack through a bare wire in the third integrated pipe, and is connected to the internal cooling channel of the third immersion liquid-cooled battery pack through a coolant channel in the third integrated pipe. The negative terminal of the third immersion liquid-cooled battery pack is connected to the negative terminal of the immersion liquid-cooled energy storage converter through bare wires in the fourth integrated pipe and the fifth integrated pipe, and is connected to the outlet of the immersion liquid-cooled unit through the coolant channel in the fourth integrated pipe. The submerged liquid-cooled energy storage converter is connected to the inlet of the submerged liquid-cooled unit through the coolant channel in the fifth integrated pipeline.

[0008] According to one aspect of the invention, the submersible liquid cooling unit includes a liquid cooling pump that circulates and cools the submersible coolant.

[0009] According to one aspect of the invention, the liquid cooling pump pumps immersion coolant through the outlet of the immersion liquid cooling unit. The immersion coolant flows through the fourth integrated pipe to the internal cooling channel of the third immersion liquid-cooled battery pack to dissipate heat from the third immersion liquid-cooled battery pack. After the third immersion liquid-cooled battery pack dissipates heat, the immersion coolant flows through the third integrated pipe to the internal cooling channel of the second immersion liquid-cooled battery pack to dissipate heat from the second immersion liquid-cooled battery pack. After the second immersion liquid-cooled battery pack dissipates heat, the immersion coolant... The coolant flows through the second integrated pipe to the internal cooling channel of the first submerged liquid-cooled battery pack to dissipate heat from the first submerged liquid-cooled battery pack. After the first submerged liquid-cooled battery pack dissipates heat, the submerged coolant flows through the first integrated pipe to the internal cooling channel of the submerged liquid-cooled energy storage converter to dissipate heat from the submerged liquid-cooled energy storage converter. After the submerged liquid-cooled energy storage converter dissipates heat, the submerged coolant flows through the fifth integrated pipe to the submerged liquid-cooled unit and is circulated and cooled by the liquid-cooling pump.

[0010] According to one aspect of the present invention, the integrated pipe includes: a pipe shell, a coolant passage, a bare wire, and a limiting and fixing pin; The limiting and fixing posts are symmetrically arranged on the inner wall of the pipe shell, and the bare wire is clamped between the two symmetrically arranged limiting and fixing posts; The coolant channels are symmetrically arranged on both sides of the integral structure formed by the bare wire and the two limiting and fixing posts inside the pipe shell.

[0011] According to one aspect of the invention, the pipe shell is made of PTFE material with an insulation strength of 50kV / mm.

[0012] According to one aspect of the present invention, the limiting and fixing pin is made of PTFE or PA material, and its dielectric strength is 50kV / mm.

[0013] According to the present invention, the integrated pipe can replace the traditional separate design of cable and liquid cooling pipe, which can effectively reduce the layout space by more than 50% and reduce the design cost by at least 20%. The integrated pipe design of this invention can simultaneously dissipate heat and control the temperature of the cable (bare wire), ensuring that the cable can be maintained between 25℃ and 35℃, thus extending the service life of the power cable. In the integrated conduit of this invention, the integral conduit and the bare wire are no longer solidly bonded, which can increase the flexibility of the overall cable conduit layout and reduce the minimum bending radius of the cable. The integrated conduit of this invention can relieve the protection requirements of cable connectors, which can be directly fixed by bare crimp screws, eliminating the need for high-protection cable mating connectors and reducing costs.

[0014] The integrated pipe of this invention can be used with traditional liquid-cooled waterproof quick connectors. The internal bare cable can be directly screwed onto the copper busbar or spliced ​​with cables, which can release the protection requirements of cable connectors, eliminate the need for high-protection cable mating connectors, and reduce costs.

[0015] The immersion piping system of this invention can achieve intelligent energy-saving temperature control, realize energy saving and efficiency improvement, and long service life. This invention supports cable temperature control and reduces heat loss. For example, when the temperature is low in winter, the cable itself can be used to heat the coolant to achieve system temperature control and reduce system energy consumption; when the temperature is high in summer, the coolant is used to cool the cable. The cable in this invention has strong temperature uniformity, which can effectively extend the service life of the cable. Attached Figure Description

[0016] Figure 1 The schematic diagram illustrates the structural layout of an integrated submersible piping system for coolant and bare cables according to one embodiment of the present invention. Figure 2 A schematic cross-sectional view of an integral pipe according to one embodiment of the present invention; In the diagram: 1-pipe casing, 2-coolant passage, 3-bare wire, 4-limiting fixing post, 5-first integrated pipe, 6-second integrated pipe, 7-third integrated pipe, 8-fourth integrated pipe, 9-fifth integrated pipe, 10-first immersion liquid-cooled battery pack, 11-second immersion liquid-cooled battery pack, 12-third immersion liquid-cooled battery pack, 13-immersion liquid-cooled energy storage converter, 14-immersion liquid-cooled unit, 15-liquid-cooled pump. Detailed Implementation

[0017] The invention will now be discussed with reference to exemplary embodiments. It should be understood that the described embodiments are merely intended to enable those skilled in the art to better understand and thus implement the invention, and are not intended to imply any limitation on the scope of the invention.

[0018] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment".

[0019] Figure 1 The schematic diagram illustrates the structural layout of an integrated submersible piping system for coolant and bare cables according to one embodiment of the present invention. Figure 2This schematic diagram shows a cross-sectional view of an integral pipe according to one embodiment of the present invention. (In conjunction with...) Figure 1 and Figure 2 As shown, in this invention, the immersion piping system integrating coolant and bare cable includes: an integrated piping system, multiple immersion liquid-cooled battery packs, an immersion liquid-cooled unit, an immersion liquid-cooled energy storage converter, and a liquid-cooled pump. The integrated pipe contains bare wires and coolant channels, and the submerged coolant flows on the outside (outer wall) of the bare wires through the coolant channels. After each submerged liquid-cooled battery pack is connected in series through an integrated pipe, the submerged liquid-cooled battery pack at the rear is connected to the outlet of the submerged liquid-cooled unit through the coolant channel in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the inlet of the submerged liquid-cooled unit through the coolant channel in the integrated pipe, and its negative terminal is connected to the negative terminal of the submerged liquid-cooled battery pack at the rear after series connection through the bare wire in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the submerged liquid-cooled battery pack at the head of the series via a coolant channel in an integrated pipe, and its positive terminal is connected to the positive terminal of the submerged liquid-cooled battery pack at the head of the series via a bare wire in the integrated pipe. The submerged liquid-cooled unit drives the submerged coolant to circulate and cool the submerged liquid-cooled battery packs and submerged liquid-cooled energy storage converters connected in series through an integrated pipeline.

[0020] Furthermore, such as Figure 2 As shown, in this embodiment, the integrated pipe includes: a pipe shell 1, a coolant channel 2, a bare wire 3, and a limiting and fixing pin 4; The limiting and fixing posts 4 are symmetrically arranged on the inner wall of the pipe shell 1, and the bare wire 3 is clamped between the two symmetrically arranged limiting and fixing posts 4; Coolant channels 2 are symmetrically arranged on both sides of the integral structure formed by bare wires 3 and two limiting and fixing posts 4 inside the pipe shell 1. This arrangement allows for a compact design layout of the integrated pipe, reducing design costs. The integrated pipe can combine cooling channels and current channels, effectively reducing system layout space; moreover, the integrated design can reduce the protection level of cable interfaces, further lowering design costs.

[0021] In this embodiment, the pipe shell 1 is made of PTFE material with an insulation strength of 50kV / mm and is located at the outermost edge of the system pipe. The coolant channel 2 meets the flow requirements of the submerged coolant, and the inner diameter of the channel is designed according to the different cable and flow channel requirements. The submerged coolant is a non-flammable hydrocarbon compound with good fluidity and insulation properties. The bare wire is a copper / aluminum bare cable, located at the innermost edge of the system, and is made of multi-core bare copper / aluminum wire for power transmission. The limiting and fixing pin 4 is located between the pipe shell and the cable, and is made of PTFE, PA, etc., with an insulation withstand voltage of 50kV / mm, and is used to limit the position of the bare wire 3 in the pipe.

[0022] Furthermore, such as Figure 1 As shown, in this embodiment, the integrated pipe includes: a first integrated pipe 5, a second integrated pipe 6, a third integrated pipe 7, a fourth integrated pipe 8, and a fifth integrated pipe 9. The submersible liquid-cooled battery pack includes: a first submersible liquid-cooled battery pack 10, a second submersible liquid-cooled battery pack 11, and a third submersible liquid-cooled battery pack 12; The positive terminal of the first submerged liquid-cooled battery pack 10 is connected to the positive terminal of the submerged liquid-cooled energy storage converter 13 through a bare wire in the first integrated pipe 5, and is connected to the internal cooling channel of the submerged liquid-cooled energy storage converter 13 through a coolant channel in the first integrated pipe 5. The negative terminal of the first immersion liquid-cooled battery pack 10 is connected in series with the positive terminal of the second immersion liquid-cooled battery pack 11 through the bare wire in the second integrated pipe 6, and is connected to the internal cooling channel of the second immersion liquid-cooled battery pack 11 through the coolant channel in the second integrated pipe 6. The negative terminal of the second immersion liquid-cooled battery pack 11 is connected in series with the positive terminal of the third immersion liquid-cooled battery pack 12 through the bare wire in the third integrated pipe 7, and is connected to the internal cooling channel of the third immersion liquid-cooled battery pack 12 through the coolant channel in the third integrated pipe 7. The negative terminal of the third immersion liquid-cooled battery pack 12 is connected to the negative terminal of the immersion liquid-cooled energy storage converter 13 through the bare wires in the fourth integrated pipe 8 and the fifth integrated pipe 9, and is connected to the outlet of the immersion liquid-cooled unit 14 through the coolant channel in the fourth integrated pipe 8. The submerged liquid-cooled energy storage converter 13 is connected to the inlet of the submerged liquid-cooled unit 14 through the coolant passage in the fifth integrated pipe 9.

[0023] Furthermore, such as Figure 1 As shown, in this embodiment, the submerged liquid cooling unit 14 includes a liquid cooling pump 15, which circulates and cools the submerged coolant.

[0024] Furthermore, such as Figure 1 As shown, in this embodiment, the liquid cooling pump 15 pumps the submersible coolant out through the outlet of the submersible liquid cooling unit. The submersible coolant flows through the fourth integrated pipe 8 to the internal cooling channel of the third submersible liquid-cooled battery pack 12 to dissipate heat from the third submersible liquid-cooled battery pack 12. After the third submersible liquid-cooled battery pack 12 dissipates heat, the submersible coolant flows through the third integrated pipe 7 to the internal cooling channel of the second submersible liquid-cooled battery pack 11 to dissipate heat from the second submersible liquid-cooled battery pack 11. After the second submersible liquid-cooled battery pack 11 dissipates heat, the submersible coolant flows through the second integrated pipe 6 to the... The internal cooling channel of the first submerged liquid-cooled battery pack 10 dissipates heat from the first submerged liquid-cooled battery pack 10. After the first submerged liquid-cooled battery pack 10 dissipates heat, the submerged coolant flows through the first integrated pipe 5 to the internal cooling channel of the submerged liquid-cooled energy storage converter 13 to dissipate heat from the submerged liquid-cooled energy storage converter 13. After the submerged liquid-cooled energy storage converter 13 dissipates heat, the submerged coolant flows through the fifth integrated pipe 9 to the submerged liquid-cooled unit 14 for circulating cooling by the liquid-cooled pump 15. Then, the submerged liquid-cooled battery packs and submerged liquid-cooled energy storage converters are circulated and cooled in the same manner.

[0025] According to the above-described solution of the present invention, the integrated pipe of the present invention can replace the traditional separate design of cable and liquid cooling pipe, which can effectively reduce the layout space by more than 50% and reduce the design cost by at least 20%. The integrated pipe design of this invention can simultaneously dissipate heat and control the temperature of the cable (bare wire), ensuring that the cable can be maintained between 25℃ and 35℃, thus extending the service life of the power cable. In the integrated conduit of this invention, the integral conduit and the bare wire are no longer solidly bonded, which can increase the flexibility of the overall cable conduit layout and reduce the minimum bending radius of the cable. The integrated pipe of this invention can be used with traditional liquid-cooled waterproof quick connectors. The internal bare cable can be directly screwed onto the copper busbar or spliced ​​with cables, which can release the protection requirements of cable connectors, eliminate the need for high-protection cable mating connectors, and reduce costs.

[0026] The immersion piping system of this invention can achieve intelligent energy-saving temperature control, realize energy saving and efficiency improvement, and long service life. This invention supports cable temperature control, reduces heat loss, and can use the heat generated by the cable itself to raise the temperature of the coolant in winter when the temperature is low, thereby controlling the system temperature and reducing system energy consumption; in summer when the temperature is high, the coolant is used to cool the cable; the cable in this invention has strong temperature uniformity, which can effectively extend the service life of the cable.

[0027] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

[0028] It should be understood that the sequence number of each step in the invention and its embodiments does not absolutely imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Claims

1. An integrated submersible piping system for coolant and bare cables, characterized in that, include: Integrated piping, multiple submerged liquid-cooled battery packs, submerged liquid-cooled chiller units, submerged liquid-cooled energy storage converters, and liquid-cooled pumps; The integrated pipe contains bare wires and coolant channels, and the submerged coolant flows outside the bare wires through the coolant channels. Each of the aforementioned submerged liquid-cooled battery packs is connected in series through an integrated pipe, and the submerged liquid-cooled battery pack at the rear is connected to the outlet of the submerged liquid-cooled unit through the coolant channel in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the inlet of the submerged liquid-cooled unit through a coolant channel in an integrated pipe, and its negative terminal is connected to the negative terminal of the submerged liquid-cooled battery pack at the rear end of the series connection through a bare wire in the integrated pipe. The submerged liquid-cooled energy storage converter is connected to the submerged liquid-cooled battery pack at the head of the series via a coolant channel in an integrated pipe, and its positive terminal is connected to the positive terminal of the submerged liquid-cooled battery pack at the head of the series via a bare wire in the integrated pipe. The submerged liquid-cooled unit drives the submerged coolant to circulate and cool the submerged liquid-cooled battery packs and submerged liquid-cooled energy storage converters connected in series through an integrated pipeline.

2. The integrated coolant and bare cable immersion piping system according to claim 1, characterized in that, The integrated pipe includes: a first integrated pipe, a second integrated pipe, a third integrated pipe, a fourth integrated pipe, and a fifth integrated pipe; The immersion liquid-cooled battery pack includes: a first immersion liquid-cooled battery pack, a second immersion liquid-cooled battery pack, and a third immersion liquid-cooled battery pack; The positive terminal of the first submerged liquid-cooled battery pack is connected to the positive terminal of the submerged liquid-cooled energy storage converter through a bare wire in the first integrated pipe, and is connected to the internal cooling channel of the submerged liquid-cooled energy storage converter through a coolant channel in the first integrated pipe. The negative terminal of the first immersion liquid-cooled battery pack is connected in series with the positive terminal of the second immersion liquid-cooled battery pack through a bare wire in the second integrated pipe, and is connected to the internal cooling channel of the second immersion liquid-cooled battery pack through a coolant channel in the second integrated pipe. The negative terminal of the second immersion liquid-cooled battery pack is connected in series with the positive terminal of the third immersion liquid-cooled battery pack through a bare wire in the third integrated pipe, and is connected to the internal cooling channel of the third immersion liquid-cooled battery pack through a coolant channel in the third integrated pipe. The negative terminal of the third immersion liquid-cooled battery pack is connected to the negative terminal of the immersion liquid-cooled energy storage converter through bare wires in the fourth integrated pipe and the fifth integrated pipe, and is connected to the outlet of the immersion liquid-cooled unit through the coolant channel in the fourth integrated pipe. The submerged liquid-cooled energy storage converter is connected to the inlet of the submerged liquid-cooled unit through the coolant channel in the fifth integrated pipeline.

3. The integrated coolant and bare cable immersion piping system according to claim 2, characterized in that, The submersible liquid-cooled unit includes a liquid-cooled pump that circulates and cools the submersible coolant.

4. The integrated coolant and bare cable immersion piping system according to claim 3, characterized in that, The liquid cooling pump pumps the submersible coolant through the outlet of the submersible liquid cooling unit. The submersible coolant flows through the fourth integrated pipe to the internal cooling channel of the third submersible liquid-cooled battery pack to dissipate heat from the third submersible liquid-cooled battery pack. After the third submersible liquid-cooled battery pack dissipates heat, the submersible coolant flows through the third integrated pipe to the internal cooling channel of the second submersible liquid-cooled battery pack to dissipate heat from the second submersible liquid-cooled battery pack. After the second submersible liquid-cooled battery pack dissipates heat, the submersible coolant flows through... The second integrated pipe flows to the internal cooling channel of the first submerged liquid-cooled battery pack to dissipate heat from the first submerged liquid-cooled battery pack. After the first submerged liquid-cooled battery pack dissipates heat, the submerged coolant flows through the first integrated pipe to the internal cooling channel of the submerged liquid-cooled energy storage converter to dissipate heat from the submerged liquid-cooled energy storage converter. After the submerged liquid-cooled energy storage converter dissipates heat, the submerged coolant flows through the fifth integrated pipe to the submerged liquid-cooled unit and is circulated and cooled by the liquid-cooling pump.

5. The integrated coolant and bare cable immersion piping system according to any one of claims 1-4, characterized in that, The integrated pipe includes: a pipe shell, a coolant channel, bare wires, and a limiting and fixing pin; The limiting and fixing posts are symmetrically arranged on the inner wall of the pipe shell, and the bare wire is clamped between the two symmetrically arranged limiting and fixing posts; The coolant channels are symmetrically arranged on both sides of the integral structure formed by the bare wire and the two limiting and fixing posts inside the pipe shell.

6. The integrated coolant and bare cable immersion piping system according to claim 5, characterized in that, The outer shell of the pipe is made of PTFE material with a dielectric strength of 50kV / mm.

7. The integrated coolant and bare cable immersion piping system according to claim 5, characterized in that, The limiting and fixing pin is made of PTFE or PA material, and its insulation strength is 50kV / mm.

Images