Cooling device of internal maintenance box type power supply cabin

Abstract

The utility model provides a cooling device of an internal maintenance box type power supply cabin, which relates to the technical field of battery heat dissipation and comprises a liquid cooling machine, and a liquid cooling agent in the liquid cooling machine flows back to the liquid cooling machine after flowing through each storage battery cabinet in the internal maintenance box type power supply cabin for heat exchange through a multi-stage liquid supply pipeline. The cooling device has the beneficial effects that the cooling device for the internal maintenance box type power supply cabin is provided, the liquid cooling machine serves as the core of the cooling device, and liquid serves as a cooling medium to absorb and take away heat. And through the multi-stage liquid supply pipeline, the liquid cooling agent can flow through each storage battery cabinet in the internal maintenance box type power supply cabin, so that efficient heat exchange is realized, the working temperature of the battery can be accurately controlled, and the operation of the battery in a proper range is ensured. Therefore, the service life of the battery is prolonged, the performance of the battery is improved, and potential safety hazards caused by overheating are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery heat dissipation technical field especially relates to a cooling device of inner maintenance box type power supply cabin. BACKGROUND

[0002] As an important way for the shipping industry to move towards green development, electric ships have gained widespread attention worldwide in recent years. Compared with traditional fuel ships, electric ships have the advantages of zero emissions, low noise, and low operating costs, and have shown great potential in inland shipping, short-distance routes, and port operations. With the operation of China's coastal container ships entering a new era of zero emissions and pure electric power, the design of the box-type power supply has also transformed from the original external maintenance structure to a more advanced internal maintenance structure.

[0003] In this transformation, the power battery pack, as the power heart of the electric ship, will generate heat during charging and discharging cycles. To ensure that the battery can operate safely and efficiently within the optimal temperature range, it is particularly important to have an effective cooling system. SUMMARY

[0004] To solve the problems in the prior art, the utility model provides a cooling device for an inner maintenance box type power supply cabin, comprising:

[0005] A liquid cooling machine, the liquid coolant in the liquid cooling machine flows through each battery cabinet in the inner maintenance box type power supply cabin through a multi-stage liquid supply pipeline to exchange heat and then flows back to the liquid cooling machine.

[0006] Preferably, each battery cabinet includes a plurality of battery packs stacked from bottom to top; the multi-stage liquid supply pipeline includes:

[0007] A primary liquid supply pipe, the cooling liquid inlet of the primary liquid supply pipe is connected to the cooling liquid outlet of the liquid cooling machine, and the primary liquid supply pipe is also connected to a plurality of secondary liquid supply pipes;

[0008] A primary liquid return pipe, the cooling liquid outlet of the primary liquid return pipe is connected to the cooling liquid inlet of the liquid cooling machine, and the primary liquid return pipe is connected to a plurality of secondary liquid return pipes;

[0009] A plurality of tertiary liquid supply pipes, one tertiary liquid supply pipe is provided in each battery pack, the cooling liquid inlet of each secondary liquid supply pipe is connected to a plurality of tertiary liquid supply pipes, and the cooling liquid outlet of each secondary liquid return pipe is connected to a plurality of tertiary liquid supply pipes.

[0010] Preferably, the primary liquid supply pipe is arranged at the bottom of the battery cabinet, and the primary liquid return pipe is arranged at the top of the battery cabinet;

[0011] An exhaust valve is arranged on the primary liquid return pipe.

[0012] Preferably, the primary liquid supply pipe and the connected secondary liquid supply pipes are connected by bellows, and the primary liquid return pipe and the corresponding secondary liquid return pipes are connected by bellows.

[0013] Preferably, a stop valve is installed at the connection between the bellows and the primary liquid supply pipe and the secondary liquid supply pipes, and at the connection between the bellows and the primary liquid return pipe and the secondary liquid return pipes.

[0014] Preferably, the tertiary liquid supply pipe is a full stainless steel metal bellows.

[0015] Preferably, the liquid cooling machine comprises an internal circulation cooling part, which comprises:

[0016] a circulating pump, the cooling liquid outlet of the circulating pump is connected to the cooling liquid inlet of the plate heat exchanger, the cooling liquid outlet of the plate heat exchanger is connected to the cooling liquid inlet of the primary liquid supply pipe; the cooling liquid outlet of the primary liquid return pipe is connected to the cooling liquid inlet of the circulating pump.

[0017] Preferably, the liquid cooling machine further comprises an external circulation cooling part, which comprises:

[0018] a compressor, the refrigerant inlet of the compressor is connected to the refrigerant outlet of the plate heat exchanger, the refrigerant outlet of the compressor is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is connected to the refrigerant inlet of the plate heat exchanger;

[0019] a fan, the condenser is cooled by the fan.

[0020] Preferably, the refrigerant outlet of the condenser is connected to the refrigerant inlet of the plate heat exchanger through an expansion valve.

[0021] The above technical solution has the following advantages or beneficial effects: a cooling device for an internally maintained box-type power supply cabin is provided, in which a liquid cooling machine serves as the core of the cooling device and uses liquid as a cooling medium to absorb and carry away heat. Through multi-stage liquid supply pipes, the liquid coolant can flow through each battery cabinet in the internally maintained box-type power supply cabin, achieving efficient heat exchange and enabling accurate control of the working temperature of the batteries, ensuring that they operate within an appropriate range. This helps to prolong the service life of the batteries, improve battery performance, and reduce safety hazards caused by overheating. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 In a preferred embodiment of the present utility model, a structure diagram of a cooling device for an internally maintained box-type power supply cabin is provided.

[0023] Figure 2 In a preferred embodiment of the present utility model, a structure diagram of an internal and external circulation part of a liquid cooling machine 1 is provided. DETAILED DESCRIPTION

[0024] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The utility model is not limited to the embodiment, and other embodiments can also belong to the scope of the utility model as long as they meet the main idea of the utility model.

[0025] In the preferred embodiment of the utility model, based on the above problems existing in the prior art, a cooling device for an internally maintained box-type power cabin is provided, as shown in the drawings, comprising: Figure 1

[0026] The liquid cooling machine 1, the liquid coolant in the liquid cooling machine 1 flows through each battery cabinet 3 in the internally maintained box-type power cabin through the multi-stage liquid supply pipeline 2 to exchange heat and then flows back to the liquid cooling machine 1.

[0027] Specifically, the cooling device for the internally maintained box-type power cabin is provided in the embodiment, wherein the liquid cooling machine 1 is the core of the cooling device, and uses liquid as the cooling medium to absorb and carry away heat. Through the multi-stage liquid supply pipeline 2, the liquid coolant can flow through each battery cabinet 3 in the internally maintained box-type power cabin, realizing efficient heat exchange, so that the working temperature of the battery can be accurately controlled to ensure that it operates within the appropriate range. This helps to prolong the battery life, improve the battery performance, and reduce the safety hazards caused by overheating.

[0028] In the preferred embodiment of the utility model, as shown in the drawings, each battery cabinet 3 comprises a plurality of battery packs 31 stacked from bottom to top; the multi-stage liquid supply pipeline 2 comprises: Figure 1

[0029] A primary liquid supply pipe 21, the cooling liquid inlet of the primary liquid supply pipe 21 is connected to the cooling liquid outlet of the liquid cooling machine 1, and the primary liquid supply pipe 21 is also connected to a plurality of secondary liquid supply pipes 210;

[0030] A primary liquid return pipe 22, the cooling liquid outlet of the primary liquid return pipe 22 is connected to the cooling liquid inlet of the liquid cooling machine 1, and the primary liquid return pipe 22 is connected to a plurality of secondary liquid return pipes 220;

[0031] A plurality of tertiary liquid supply pipes 23, one tertiary liquid supply pipe 23 is arranged in each battery pack 31, the cooling liquid inlet of each secondary liquid supply pipe 210 is connected to a plurality of tertiary liquid supply pipes 23, and the cooling liquid outlet of each secondary liquid return pipe 220 is connected to a plurality of tertiary liquid supply pipes 23.

[0032] Specifically, as shown in the drawings, Figure 1 and Figure 2 ​​As shown, the inner maintenance box type power cabin usually places the battery pack 31 in the form of a battery cabinet 3, and each battery cabinet 3 includes multiple battery packs 31 stacked from bottom to top. The cooling liquid can flow through all the battery packs 31 through multiple levels of liquid supply pipes to ensure that each battery pack 31 is effectively cooled. The following is a detailed flow path of the cooling liquid:

[0033] The cooling liquid flows out of the liquid cooler: the cooling liquid first flows out of the cooling liquid outlet of the liquid cooler 1 and enters the first liquid supply pipe 21.

[0034] Distributed to each secondary liquid supply pipe: the first liquid supply pipe 21 delivers the cooling liquid to multiple secondary liquid supply pipes 210. These secondary liquid supply pipes 210 are equivalent to the main channel of the cooling liquid, which further distributes the cooling liquid to the area where each battery pack is located.

[0035] Enter the battery pack 31 for cooling: each secondary liquid supply pipe 210 is connected to multiple tertiary liquid supply pipes 23, and each battery pack 31 is provided with a tertiary liquid supply pipe 23. The cooling liquid flows into the battery pack 31 through the tertiary liquid supply pipe 23, exchanges heat with the battery pack 31, and absorbs the heat generated by the battery pack 31.

[0036] Cooling liquid backflow: after heat exchange is completed, the cooling liquid flows out of the tertiary liquid supply pipe 23 in the battery pack 31 and enters the secondary liquid return pipe 220 connected thereto. These secondary liquid return pipes 220 are equivalent to the main return channel of the cooling liquid, which collects the cooling liquid from each battery pack area.

[0037] Collect and return to the liquid cooler: the cooling liquid in multiple secondary liquid return pipes 220 eventually flows into the first liquid return pipe 22, and then the first liquid return pipe 22 delivers the cooling liquid back to the cooling liquid inlet of the liquid cooler 1.

[0038] The cooling liquid circulates in the liquid cooler: after returning to the liquid cooler 1, the cooling liquid is cooled and cooled again, and then flows out of the cooling liquid outlet to start a new round of cooling circulation.

[0039] Through such a design, the cooling liquid can uniformly flow through each battery pack 31, ensuring that the battery pack always maintains within the appropriate temperature range during operation, thereby prolonging the battery life, improving the battery performance, and reducing the safety hazards caused by overheating.

[0040] Specifically, as shown in the drawings, the battery pack of the battery cabinet can also be provided as multiple layers, and the multiple battery packs of the same layer are connected in series through the tertiary liquid supply pipes. Figure 1

[0041] In a preferred embodiment of the present application, the first liquid supply pipe is arranged at the bottom of the battery cabinet, and the first liquid return pipe is arranged at the top of the battery cabinet.

[0042] ​The primary liquid return pipe is provided with an exhaust valve.

[0043] Specifically, in the embodiment, the multi-stage liquid supply pipeline 2 adopts a layout mode of entering from the bottom and exiting from the top, that is, the cooling liquid enters the battery cabinets 3 from the bottom, and then flows into the primary liquid return pipe 22 from the top.

[0044] The presence of gas in the cooling liquid can reduce the heat transfer efficiency of the cooling liquid, because the thermal conductivity of gas is much lower than that of liquid. By discharging the gas through the exhaust valve 24, the cooling liquid in the pipeline can be ensured to be more pure, thereby improving the cooling efficiency and making the battery pack 31 more effectively cooled.

[0045] The accumulation of gas in the cooling liquid can also cause cavitation, that is, the impact force generated when the bubbles in the liquid burst can damage the pipeline and components. In addition, some gases (such as oxygen) can also accelerate the oxidation and corrosion process of the cooling liquid. Therefore, discharging the gas helps to reduce these potential problems and prolong the service life of the pipeline and components.

[0046] The accumulation of gas in the pipeline can also affect the stable operation of the cooling system, such as causing unstable flow, pressure fluctuations, etc. By discharging the gas through the exhaust valve, the cooling system can be ensured to always operate in a stable state, thereby improving the reliability and safety of the system.

[0047] After discharging the gas, the cooling liquid can flow more smoothly in the pipeline, reducing the flow resistance caused by gas blockage. This helps to optimize the performance of the cooling system, making the battery pack more evenly and effectively cooled.

[0048] In the preferred embodiment of the utility model, the primary liquid supply pipe 21 and the connected secondary liquid supply pipes 210, and the primary liquid return pipe 22 and the corresponding secondary liquid return pipes 220 are connected by corrugated pipes.

[0049] Specifically, the metal corrugated pipe can absorb the tolerance during manufacturing and installation, facilitating the installation and fixation of the pipeline.

[0050] In the preferred embodiment of the utility model, a stop valve is installed at the connection between the corrugated pipe and the primary liquid supply pipe 21 and the secondary liquid supply pipes 210, and at the connection between the corrugated pipe and the primary liquid return pipe 22 and the secondary liquid return pipes 220.

[0051] Specifically, the stop valve can disconnect the secondary liquid supply pipes 210 from the primary liquid supply pipe 21, and disconnect the secondary liquid return pipes 220 from the primary liquid return pipe 22, facilitating maintenance.

[0052] The three-stage liquid supply pipe is a full stainless steel metal bellows pipe in the preferred embodiment of the utility model.

[0053] Specifically, the metal bellows pipe has a unique bellows structure, so that it has good flexibility and shock resistance, and has excellent corrosion resistance.

[0054] In the preferred embodiment of the utility model, Figure 2 As shown in the figure, the liquid cooling machine 1 comprises an inner circulation cooling part, which comprises:

[0055] The cooling liquid outlet of the circulation pump 11 is connected with the cooling liquid inlet of the plate heat exchanger 12, the cooling liquid outlet of the plate heat exchanger 12 is connected with the cooling liquid inlet of the first-stage liquid supply pipe 21, and the cooling liquid outlet of the first-stage liquid return pipe 22 is connected with the cooling liquid inlet of the circulation pump 11.

[0056] In the preferred embodiment of the utility model, the liquid cooling machine 1 further comprises an outer circulation cooling part, which comprises:

[0057] The refrigerant inlet of the compressor 13 is connected with the refrigerant outlet of the plate heat exchanger 12, the refrigerant outlet of the compressor 13 is connected with the refrigerant inlet of the condenser 14, and the refrigerant outlet of the condenser 14 is connected with the refrigerant inlet of the plate heat exchanger 12.

[0058] The fan 15 performs air cooling on the condenser 14.

[0059] In the preferred embodiment of the utility model, the refrigerant outlet of the condenser 14 is connected with the refrigerant inlet of the plate heat exchanger 12 through the expansion valve 16.

[0060] Specifically, the liquid cooling machine in the embodiment adopts the inner-outer circulation mode for cooling and heat exchange, the inner circulation liquid cooling medium is 50% ethylene glycol solution, and the outer circulation medium is refrigerant R410A.

[0061] The inner circulation process is as follows:

[0062] Under the action of the circulation pump 11, the cooling liquid is pumped out from the cooling liquid tank (not marked in the figure, but is a common component of the liquid cooling system) and enters the cooling liquid outlet of the circulation pump 11.

[0063] After the cooling liquid flows out from the cooling liquid outlet of the circulation pump 11, it enters the cooling liquid inlet of the plate heat exchanger 12.

[0064] The cooled coolant flows out of the coolant outlet of the plate heat exchanger 12, enters the primary coolant supply pipe 21, and is transported into the battery cabinet 3 to cool the battery pack 31.

[0065] In the battery cabinet 31, the coolant absorbs the heat generated by the battery pack 31 and its temperature rises. Then, the coolant flows back from the primary coolant return pipe 22 and enters the coolant inlet of the circulating pump 11, starting a new cycle.

[0066] External circulation process:

[0067] The refrigerant absorbs the heat of the coolant in the plate heat exchanger 12, its temperature rises, and it flows out of the refrigerant outlet of the plate heat exchanger 12.

[0068] The high-temperature refrigerant enters the refrigerant inlet of the compressor 13 and is compressed into high-temperature and high-pressure gas in the compressor 13.

[0069] The compressed high-temperature and high-pressure refrigerant flows out of the refrigerant outlet of the compressor 13 and enters the refrigerant inlet of the condenser 14. In the condenser 14, the refrigerant exchanges heat with the cold air provided by the fan 15, thereby reducing the temperature of the refrigerant.

[0070] The cooled refrigerant flows out of the refrigerant outlet of the condenser 14, passes through the expansion valve 16 for throttling, and enters the refrigerant inlet of the plate heat exchanger 12 again, starting a new cycle.

[0071] Advantages of internal circulation:

[0072] High-efficiency heat dissipation: Through the circulation of the coolant in the battery cabinet, the heat generated by the battery module can be efficiently taken away, ensuring that the battery module operates within a safe temperature range.

[0073] Uniform temperature: The coolant can more evenly transfer heat, ensuring that the temperature distribution inside the battery cabinet is more uniform, improving the stability and reliability of the equipment.

[0074] Low noise: Compared with air-cooled heat dissipation technology, the liquid-cooled heat dissipation system produces lower noise, making it more suitable for places that require low noise.

[0075] Advantages of external circulation:

[0076] Enhanced heat dissipation: Through the compression of the refrigerant by the compressor 13 and the heat exchange between the condenser 14 and the fan 15, the heat dissipation effect can be further enhanced, ensuring that the refrigerant can effectively absorb the heat of the coolant in the plate heat exchanger 12.

[0077] Energy saving and environmental protection: the outer circulation cooling part adopts the combination of refrigerant circulation and air cooling, which can realize efficient refrigeration and energy saving and emission reduction.

[0078] System stability: the components of the outer circulation cooling part work cooperatively to ensure the stable operation of the whole liquid cooling system, improve the reliability and service life of the equipment.

[0079] In summary, the utility model discloses the combination of internal and external circulation, realizes the efficient heat dissipation and temperature control of battery cabinet, and improves the stability and reliability of the system.

[0080] The utility model also provides a kind of electric ship, include cooling device as above.

[0081] The above is only the preferred embodiment of the utility model, and not therefore limit the implementation mode and protection scope of the utility model, for the person skilled in the art, it should be able to realize that the scheme obtained by equivalent replacement and obvious change of the present specification and drawing should be included in the protection scope of the utility model.

Claims

1. A cooling device for an internally maintained box-type power pod, characterized by, The application relates to a liquid cooling machine. Each battery cabinet comprises a plurality of battery packs stacked from bottom to top; the multi-stage liquid supply pipeline comprises:

2. Cooling device according to claim 1, characterized in that a primary liquid supply pipe, a cooling liquid inlet of the primary liquid supply pipe being connected with a cooling liquid outlet of the liquid cooling machine, the primary liquid supply pipe being further connected with a plurality of secondary liquid supply pipes; a primary liquid return pipe, a cooling liquid outlet of the primary liquid return pipe being connected with a cooling liquid inlet of the liquid cooling machine, the primary liquid return pipe being connected with a plurality of secondary liquid return pipes; a plurality of tertiary liquid supply pipes, one of the tertiary liquid supply pipes being arranged in each battery pack, a cooling liquid inlet of each secondary liquid supply pipe being connected with a plurality of cooling liquid inlets of the tertiary liquid supply pipes, and a cooling liquid outlet of each secondary liquid return pipe being connected with a plurality of cooling liquid outlets of the tertiary liquid supply pipes. The primary liquid supply pipe is arranged at the bottom of the battery cabinet, and the primary liquid return pipe is arranged at the top of the battery cabinet.

3. Cooling device according to claim 2, characterized in that An exhaust valve is arranged on the primary liquid return pipe. The primary liquid supply pipe and each secondary liquid supply pipe connected therewith are connected through a corrugated pipe, and the primary liquid return pipe and each secondary liquid return pipe connected therewith are connected through a corrugated pipe.

4. Cooling device according to claim 2, characterized in that A stop valve is arranged at the connection between the corrugated pipe and the primary liquid supply pipe and each secondary liquid supply pipe, and at the connection between the corrugated pipe and the primary liquid return pipe and each secondary liquid return pipe.

5. Cooling device according to claim 4, characterized in that The tertiary liquid supply pipe is a full stainless steel corrugated pipe.

6. The cooling device of claim 2, wherein The liquid cooling machine comprises an internal circulation cooling part, and the internal circulation cooling part comprises:

7. The cooling device of claim 2, wherein a circulating pump, a cooling liquid outlet of the circulating pump being connected with a cooling liquid inlet of a plate heat exchanger, a cooling liquid outlet of the plate heat exchanger being connected with a cooling liquid inlet of the primary liquid supply pipe, and a cooling liquid outlet of the primary liquid return pipe being connected with a cooling liquid inlet of the circulating pump. The liquid cooling machine further comprises an external circulation cooling part, and the external circulation cooling part comprises:

8. Cooling device according to claim 7, characterized in that a compressor, a refrigerant inlet of the compressor being connected with a refrigerant outlet of the plate heat exchanger, a refrigerant outlet of the compressor being connected with a refrigerant inlet of a condenser, and a refrigerant outlet of the condenser being connected with a refrigerant inlet of the plate heat exchanger; a fan, air of the fan being used to cool the condenser. An expansion valve is arranged between the refrigerant outlet of the condenser and the refrigerant inlet of the plate heat exchanger.

9. Cooling device according to claim 8, characterized in that ​

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