Self-adjusting industrial and commercial energy storage liquid cooling pipeline system

Abstract

The utility model discloses a self-adjusting industrial and commercial energy storage liquid cooling pipeline system. A liquid cooling machine liquid outlet pipe of a liquid cooling machine is divided into an energy storage converter side branch and a battery pack side branch; flow control valves are arranged on the energy storage converter side branch and the battery pack side branch; the EMS controller is electrically connected with the flow control valve and is used for adjusting the opening degree of the flow control valve; the energy storage converter side branch comprises an energy storage converter liquid inlet pipe, an internal pipeline of the energy storage converter and an energy storage converter liquid outlet pipe; the battery pack side branch comprises a battery pack liquid inlet pipe, a plurality of battery pack liquid inlet branch pipes, an internal pipeline of the battery pack, a plurality of battery pack liquid inlet branch pipes and a battery pack liquid outlet pipe; and the liquid outlet pipe of the energy storage converter and the liquid outlet pipe of the battery pack are connected to the liquid cooling machine return pipe. The utility model solves the problems that the cooling liquid cannot give consideration to two temperatures and the efficiency cannot be obviously improved in a double-liquid cooling scheme, and has the characteristics of high energy efficiency, long service life and low noise.

Description

Technical Field

[0001] The utility model relates to a liquid cooling pipeline system, in particular to a self-regulating industrial and commercial energy storage liquid cooling pipeline system. Background Art

[0002] Existing industrial and commercial energy storage thermal management systems are gradually transitioning from air cooling systems to liquid cooling systems. Although battery pack liquid cooling technology has matured, the traditional battery pack liquid cooling solution has high noise, low consistency, and low energy efficiency. The battery pack + PCS (energy storage inverter) dual liquid cooling solution has become the mainstream liquid cooling solution, but the dual liquid cooling solution faces the problem of inconsistent operating temperature ranges between the PCS and the battery pack. The coolant in the cooling system cannot take into account both temperatures, so the system efficiency cannot be significantly improved. Utility Model Content

[0003] In order to solve the deficiencies existing in the above-mentioned technologies, the utility model provides a self-regulating industrial and commercial energy storage liquid cooling pipeline system.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is a self-regulating industrial and commercial energy storage liquid cooling pipeline system, including a liquid cooler, a liquid cooler outlet pipe of the liquid cooler branches out an energy storage converter side branch and a battery pack side branch; flow control valves are provided on the energy storage converter side branch and the battery pack side branch;

[0005] Also included is an EMS controller that receives monitoring temperature from temperature sensors on the energy storage converter and the battery pack, and the EMS controller is electrically connected to and adjusts the opening and closing degree of the flow control valve;

[0006] The energy storage converter side branch includes an energy storage converter liquid inlet pipe, an internal pipeline of the energy storage converter and an energy storage converter liquid outlet pipe which are connected in sequence;

[0007] The battery pack side branch includes a battery pack liquid inlet pipe, a plurality of battery pack liquid inlet branch pipes, an internal pipe of the battery pack, a plurality of battery pack liquid outlet branch pipes and a battery pack liquid outlet pipe which are connected in sequence;

[0008] The liquid outlet pipe of the energy storage converter and the liquid outlet pipe of the battery pack are both connected to the return pipe of the liquid cooler.

[0009] Furthermore, the battery pack liquid inlet pipe and the battery pack liquid outlet pipe are arranged vertically, and several battery pack liquid inlet branch pipes and several battery pack liquid inlet branch pipes are respectively connected one by one with the internal pipelines of the battery pack arranged in upper and lower positions. The upper end of the battery pack liquid inlet pipe is connected to the liquid outlet pipe of the liquid cooler, and the upper end of the battery pack liquid outlet pipe is connected to an exhaust valve.

[0010] Furthermore, the battery pack liquid outlet pipe is U-shaped, and the middle cross pipe constituting the U-shaped pipe is located at, and a drain valve is provided on the middle cross pipe.

[0011] Furthermore, the exhaust valve and the liquid discharge valve are both electrically connected to the EMS controller.

[0012] Furthermore, the liquid cooler and the energy storage converter are both located beside the battery pack, and the liquid cooler is located above the energy storage converter.

[0013] The utility model discloses a self-regulating industrial and commercial energy storage liquid cooling pipeline system, which divides the liquid cooling machine outlet pipe into two branches, which flow to the energy storage inverter side branch and the battery pack side branch respectively. The flow control valves on the energy storage inverter side branch and the battery pack side branch adjust the flow according to the real-time temperature monitored by the temperature sensor, so that the energy storage inverter and the battery pack always work in their respective suitable temperature ranges. The battery pack outlet pipe is U-shaped, and a drain valve is arranged on the middle cross pipe. The exhaust valve is used to discharge the gas in the pipeline to make the coolant more efficient. The drain port is used to discharge the residual coolant in the pipeline when the battery pack is repaired. The temperature sensors of the energy storage inverter and the battery pack upload the monitored real-time temperature to the EMS energy management system in the EMS controller. The EMS energy management system sends instructions to the flow control valves of the energy storage inverter and the battery pack through the set control program according to the temperature information uploaded by the energy storage inverter and the battery pack, and further adjusts the opening and closing degree of the flow control valve, thereby realizing precise temperature control of the energy storage inverter and the battery pack. Therefore, the system solves the problem that the coolant in the dual liquid cooling solution cannot take into account two temperatures and the efficiency cannot be significantly improved through precise temperature control and flow regulation. This system adopts dual liquid cooling technology, which has the characteristics of high energy efficiency and long life. The battery pack and PCS work at their own suitable temperatures, which further improves the energy efficiency and also increases the system life. At the same time, the dual liquid cooling solution PCS adopts controllable liquid cooling technology, which eliminates the defect of huge noise of the air-cooled PCS fan and reduces system noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 main view.

[0016] In the figure: 1. Liquid cooler; 2. Liquid outlet pipe of liquid cooler; 3. Flow control valve; 4. Energy storage inverter; 5. Battery pack; 6. EMS controller; 7. Liquid inlet pipe of energy storage inverter; 8. Liquid inlet pipe of battery pack; 9. Liquid inlet branch pipe of battery pack; 10. Liquid outlet branch pipe of battery pack; 11. Liquid outlet pipe of battery pack; 12. Exhaust valve; 13. Liquid drain valve; 14. Liquid cooler reflux pipe; 15. Liquid outlet pipe of energy storage inverter. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 and Figure 2 A self-regulating industrial and commercial energy storage liquid cooling pipeline system is shown, including a liquid cooler 1, which is located above the entire system. A liquid cooler outlet pipe 2 located on the upper right side of the liquid cooler 1 branches out an energy storage inverter side branch and a battery pack side branch.

[0019] Flow control valves 3 are provided on both the energy storage inverter side branch and the battery pack side branch; an EMS controller 6 is also included for receiving temperature monitoring signals from temperature sensors on the energy storage inverter 4 and the battery pack 5, and the EMS controller 6 is electrically connected to and adjusts the opening and closing degree of the flow control valve 3; the flow of each cooling liquid is controlled separately, and the energy storage inverter and the battery pack are always operated within their respective suitable temperature ranges through flow control.

[0020] The energy storage inverter side branch includes an energy storage inverter liquid inlet pipe 7, an internal pipeline of the energy storage inverter 4 and an energy storage inverter liquid outlet pipe 15 which are connected in sequence; the battery pack side branch includes a battery pack liquid inlet pipe 8, seven battery pack liquid inlet branches 9, an internal pipeline of the battery pack 5, seven battery pack liquid outlet branches 10 and a battery pack liquid outlet pipe 11 which are connected in sequence; the battery pack liquid inlet pipe 8 and the battery pack liquid outlet pipe 11 are both arranged vertically, the seven battery pack liquid inlet branches 9 and the seven battery pack liquid outlet branches 10 are respectively connected one by one with the internal pipelines of the battery pack arranged in the upper and lower positions, the upper end of the battery pack liquid inlet pipe 8 is connected to the liquid cooler outlet pipe 2, and the upper end of the battery pack liquid outlet pipe 11 is connected to the exhaust valve 12.

[0021] The battery pack outlet pipe 11 is U-shaped, and the middle horizontal pipe of the U-shaped pipe is located at, and a drain valve 13 is arranged on the middle horizontal pipe. The exhaust valve 12 and the drain valve 13 are both electrically connected to the EMS controller 6. The exhaust valve can discharge the gas in the pipeline to make the coolant more efficient. The drain port is used to discharge the residual coolant in the pipeline during the battery pack maintenance.

[0022] The energy storage converter liquid outlet pipe 15 and the battery pack liquid outlet pipe 11 are both connected to the liquid cooler return pipe 14 located on the upper left side of the liquid cooler 1. The liquid cooler 1 and the energy storage converter 4 are both located beside the battery pack 5, and the liquid cooler 1 is located above the energy storage converter 4.

[0023] As a dual liquid cooling system with automatic flow regulation, this system is turned on when working, and the coolant flows to two branches, the energy storage inverter side branch and the battery pack side branch, through the liquid cooler outlet pipe. The temperature sensors in the energy storage inverter and the battery pack upload the monitored real-time temperature to the EMS energy management system in the EMS controller. The EMS energy management system sends instructions to the flow control valves of the energy storage inverter and the battery pack through the set control program according to the temperature information uploaded by the energy storage inverter and the battery pack, adjusts the opening and closing degree of the flow control valve, and controls the flow of each coolant separately. Through the control of the flow, the energy storage inverter and the battery pack always work in their respective suitable temperature ranges; the coolant flows from the battery pack inlet pipe into the seven battery pack inlet branches, and then enters each battery pack for heat exchange. After circulation, it is merged into the battery pack outlet pipe through the battery pack outlet branch on the right side of the bottom of the battery pack, and then flows into the liquid cooler through the liquid cooler return pipe to form a coolant circulation, thereby controlling the battery pack temperature.

[0024] In summary, this system uses dual liquid cooling technology, which has the characteristics of high energy efficiency and long life. The battery pack and PCS work at their own suitable temperatures, which further improves energy efficiency and also increases system life. At the same time, the dual liquid cooling solution PCS uses controllable liquid cooling technology, eliminating the defect of huge noise from the air-cooled PCS fan and reducing system noise.

[0025] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. A self-regulating industrial and commercial energy storage liquid cooling pipeline system, comprising a liquid cooler (1), a liquid cooler outlet pipe (2) of the liquid cooler (1) branching out an energy storage converter side branch and a battery pack side branch; characterized in that: The energy storage converter side branch and the battery pack side branch are both provided with flow control valves (3); It also includes an EMS controller (6) that receives temperature monitoring signals from temperature sensors on the energy storage converter (4) and the battery pack (5), and the EMS controller (6) is electrically connected to and adjusts the opening and closing degree of the flow control valve (3); The energy storage converter side branch comprises an energy storage converter liquid inlet pipe (7), an internal pipeline of the energy storage converter (4) and an energy storage converter liquid outlet pipe (15) which are connected in sequence; The battery pack side branch comprises a battery pack liquid inlet pipe (8), a plurality of battery pack liquid inlet branch pipes (9), an internal pipe of the battery pack (5), a plurality of battery pack liquid outlet branch pipes (10) and a battery pack liquid outlet pipe (11) which are connected in sequence; The energy storage converter liquid outlet pipe (15) and the battery pack liquid outlet pipe (11) are both connected to the liquid cooling machine return pipe (14).

2. The self-regulating industrial and commercial energy storage liquid cooling pipeline system according to claim 1 is characterized in that: The battery pack liquid inlet pipe (8) and the battery pack liquid outlet pipe (11) are both arranged vertically, and a plurality of battery pack liquid inlet branch pipes (9) and a plurality of battery pack liquid outlet branch pipes (10) are respectively connected to the internal pipelines of the battery pack arranged in upper and lower positions in a one-to-one correspondence, the upper end of the battery pack liquid inlet pipe (8) is connected to the liquid cooler liquid outlet pipe (2), and the upper end of the battery pack liquid outlet pipe (11) is connected to the exhaust valve (12).

3. The self-regulating industrial and commercial energy storage liquid cooling pipeline system according to claim 2 is characterized in that: The battery pack liquid outlet pipe (11) is U-shaped, and the middle transverse pipe constituting the U-shaped pipe is located at, and a liquid discharge valve (13) is arranged on the middle transverse pipe.

4. The self-regulating industrial and commercial energy storage liquid cooling pipeline system according to claim 3 is characterized in that: The exhaust valve (12) and the liquid discharge valve (13) are both electrically connected to the EMS controller (6).

5. The self-regulating industrial and commercial energy storage liquid cooling pipeline system according to claim 4 is characterized in that: The liquid cooling machine (1) and the energy storage converter (4) are both located beside the battery pack (5), and the liquid cooling machine (1) is located above the energy storage converter (4).

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