Integrated multimodal energy storage liquid cooling unit structure

Abstract

This utility model discloses an integrated multimodal energy storage liquid-cooled unit structure, relating to the field of energy storage equipment technology. It includes a unit casing and lithium battery piping located inside the casing. Two circulating water connection ports and two refrigerant interfaces are fixedly located at the top of the outer wall of the unit casing. This utility model, by setting up a unit casing, houses a cooling water piping system consisting of an expansion tank, circulating water pipes, and a circulating water pump. The cooling water piping system can control the temperature of the lithium battery through the lithium battery piping. Furthermore, the unit casing also houses a refrigeration system consisting of an expansion valve, compressor, condenser, refrigerant piping, and heat exchanger. Both the refrigeration system and the cooling water piping are integrated inside the unit casing, and the two systems work together, achieving both electrical energy storage and thermal management while reducing the device's size and facilitating its use.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and in particular to the structure of an integrated multimodal energy storage liquid cooler unit. Background Technology

[0002] Liquid-cooled energy storage units are an advanced energy storage technology designed to improve the reliability, flexibility, and efficiency of power grids. They combine liquid cooling systems with battery energy storage technology.

[0003] In existing technologies, such as the liquid-cooled energy storage unit disclosed in CN222261182U, a base plate and a top plate are included. A first fixing plate is provided between the base plate and the top plate, and an air inlet pipe is provided on the first fixing plate. The unit also includes an inner cavity, comprising an air mixing cavity, a coil cavity, and a fan cavity. The coil cavity stores the energy storage battery and dissipates heat from the battery through the liquid-cooled coil. The fan cavity exhausts the heat-exchanged air by generating negative pressure suction. This invention uses a cylindrical battery compartment formed by the liquid-cooled coil as the storage location for the energy storage battery. This not only allows for stable placement of the energy storage battery but also ensures that the spiral liquid-cooled coil surrounds the battery without dead angles for water cooling, maximizing heat dissipation efficiency. Furthermore, the spiral liquid-cooled coil significantly increases the contact area with air, and combined with the exhaust fan, it brings in cool air from the outside to remove heat, greatly improving heat dissipation efficiency.

[0004] The above-mentioned technical solution has some problems in practical applications. It only has the functions of energy storage and unidirectional output, and cannot provide thermal management services at the same time. In addition, it requires additional equipment such as compressors, occupies a large space, and is inconvenient to use.

[0005] Therefore, it is necessary to invent an integrated multimodal energy storage liquid cooling unit structure to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an integrated multimodal energy storage liquid cooling unit structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an integrated multimodal energy storage liquid cooling unit structure, including a unit shell and a lithium battery pipeline disposed inside the unit shell. Two circulating water connection ports are fixedly provided at the top of the outer side wall of the unit shell. An expansion tank is fixedly provided inside the unit shell, and one end of the expansion tank is connected to one of the circulating water connection ports. A circulating water pipe is fixedly provided at the other end of the expansion tank. One end of the circulating water pipe is connected to one end of the lithium battery pipeline. A circulating water pump is fixedly provided inside the unit shell. The other end of the lithium battery pipeline is connected to the input end of the circulating water pump. The output end of the circulating water pump is connected to another circulating water connection port.

[0008] Two refrigerant interfaces are fixedly provided on the top of the outer wall of the unit casing. A compressor is fixedly provided inside the unit casing, and the input end of the compressor is connected to a refrigerant interface. An expansion valve, a refrigerant tank, a condenser, and a heat exchanger are fixedly provided inside the unit casing. Refrigerant pipelines are provided between the output end of the compressor, the condenser, the expansion valve, the heat exchanger, and the refrigerant tank.

[0009] A three-way valve is provided between the circulating water pump and the lithium battery pipeline, and one end of the three-way valve is connected to the input end of the heat exchanger.

[0010] Preferably, a fan is fixedly installed on the outer wall of the unit casing, and the fan is located outside the condenser.

[0011] Preferably, an air inlet is fixedly provided on the rear side of the unit casing.

[0012] Preferably, one end of the refrigerant storage tank is connected to another refrigerant interface.

[0013] Preferably, a PTC heater is fixedly installed inside the casing of the unit. One end of the PTC heater is connected to the input end of the circulating water pump, and the other end of the PTC heater is connected to the lithium battery pipeline.

[0014] Preferably, a partition is fixedly provided above the lithium battery pipeline.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This utility model features a unit casing containing a cooling water pipeline consisting of an expansion tank, circulating water pipes, and a circulating water pump. The cooling water pipeline can control the temperature of the lithium battery via the lithium battery pipeline. Furthermore, the unit casing also houses a refrigeration system consisting of an expansion valve, compressor, condenser, refrigerant pipelines, and heat exchanger. Both the refrigeration system and the cooling water pipeline are integrated inside the unit casing, and the two systems work together to achieve both energy storage and thermal management while reducing the device's size and simplifying its use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a rear view schematic diagram of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0020] Figure 4 This is a top view of the overall structure of this utility model.

[0021] In the diagram: 1. Unit casing; 2. Lithium battery piping; 3. Circulating water connection port; 4. Expansion tank; 5. Circulating water pipe; 6. Circulating water pump; 7. Baffle plate; 8. Refrigerant interface; 9. Expansion valve; 10. Compressor; 11. Condenser; 12. Refrigerant piping; 13. Heat exchanger; 14. PTC heater; 15. Three-way valve; 16. Fan; 17. Air inlet; 18. Refrigerant storage tank. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 1-4 The integrated multimodal energy storage liquid cooling unit structure shown includes a unit shell 1 and a lithium battery pipeline 2 located inside the unit shell 1. Two circulating water connection ports 3 are fixedly provided on the top of the outer side wall of the unit shell 1. An expansion tank 4 is fixedly provided inside the unit shell 1, and one end of the expansion tank 4 is connected to one of the circulating water connection ports 3. A circulating water pipe 5 is fixedly provided at the other end of the expansion tank 4. One end of the circulating water pipe 5 is connected to one end of the lithium battery pipeline 2. A circulating water pump 6 is fixedly provided inside the unit shell 1. The other end of the lithium battery pipeline 2 is connected to the input end of the circulating water pump 6. The output end of the circulating water pump 6 is connected to another circulating water connection port 3.

[0024] Two refrigerant interfaces 8 are fixedly provided on the top of the outer wall of the unit casing 1. The refrigerant interfaces 8 are used for refrigerant injection and replenishment. When there is enough refrigerant inside the unit, the refrigerant interfaces 8 can be closed through their matching valves. A compressor 10 is fixedly provided inside the unit casing 1, and the input end of the compressor 10 is connected to one of the refrigerant interfaces 8. An expansion valve 9, a refrigerant storage tank 18, a condenser 11, and a heat exchanger 13 are fixedly provided inside the unit casing 1. Refrigerant pipelines 12 are provided between the output end of the compressor 10, the condenser 11, the expansion valve 9, the heat exchanger 13 and the refrigerant storage tank 18.

[0025] A three-way valve 15 is provided between the circulating water pump 6 and the lithium battery pipeline 2, and one end of the three-way valve 15 is connected to the input end of the heat exchanger 13. The three-way valve 15 is used to control the circulation water entering the heat exchanger 13.

[0026] A fan 16 is fixedly installed on the outer wall of the unit casing 1, and the fan 16 is located on the outside of the condenser 11;

[0027] An air inlet 17 is fixedly provided on the rear side of the unit casing 1. The air inlet 17 is used to cooperate with the fan 16 to realize the air circulation inside and outside the unit casing 1.

[0028] One end of the refrigerant storage tank 18 is connected to another refrigerant interface 8. The refrigerant storage tank 18 is used to store the refrigerant in the refrigeration system.

[0029] A PTC heater 14 is fixedly installed inside the unit casing 1. One end of the PTC heater 14 is connected to the input end of the circulating water pump 6, and the other end of the PTC heater 14 is connected to the lithium battery pipeline 2. Valves are provided at both ends of the PTC heater 14. The PTC heater 14 is connected to the circulating water pipeline in parallel. The connection of the PTC heater 14 to the circulating water pipeline can be controlled by controlling the opening and closing of the valves.

[0030] A partition 7 is fixedly installed above the lithium battery pipeline 2. The partition 7 is used to separate the lithium battery from the other components inside the unit housing 1. It should be noted that the lithium battery pipeline 2 adopts the cooling pipeline design inside the lithium battery in the prior art.

[0031] Working principle of this utility model:

[0032] When this device is in use, the circulating water connection port 3, expansion tank 4, circulating water pipe 5, and circulating water pump 6 form a cooling water circulation pipeline, and the cooling water circulates through the lithium battery pipeline 2 to achieve thermal management of the lithium battery. In addition, a PTC heater 14 is connected in parallel in the cooling water circulation pipeline, which can heat the cooling water to control the temperature of the lithium battery in low-temperature environments.

[0033] Meanwhile, the refrigerant interface 8, expansion valve 9, compressor 10, condenser 11, refrigerant storage tank 18 and heat exchanger 13 form a refrigeration system, which can realize refrigeration operation. The cooling capacity generated by the refrigeration system can be output to the outside through the heat exchanger 13. At the same time, it can also exchange heat with the cooling water in the cooling water pipeline through the heat exchanger 13, so as to reduce the temperature of the cooling water and thus play an auxiliary role in controlling the temperature of the lithium battery.

[0034] During operation, external cooling water enters the lithium battery pipeline through the circulating water connection port 3 and the circulating water pipe 5. Then, under the action of the circulating water pump 6, it moves to the circulating water connection port 3. During this process, the circulating water exchanges heat with the lithium battery pipeline 2 to achieve temperature control of the lithium battery. During this process, by controlling the valves at both ends of the PTC heater 14 to open, the PTC heater 14 can be connected to the circulating water pipeline to heat the circulating water, so as to control the temperature of the lithium battery in a low-temperature environment.

[0035] During the operation of the refrigeration system, the refrigerant in the refrigerant storage tank 18 circulates under the action of the compressor 10. The refrigerant passes through the condenser 11, the expansion valve 9 and the heat exchanger 13 in sequence to achieve the refrigeration effect. During this process, the heat exchanger 13 outputs heat to the outside. At the same time, opening the three-way valve 15 can introduce circulating water into the heat exchanger 13, so that heat exchange can be carried out between the heat exchanger 13 and the circulating water to achieve the effect of auxiliary control of battery temperature.

[0036] It should be noted that in this embodiment, each structure is installed inside the unit housing 1 and is fixed to the inner wall of the unit housing 1 by bolts or other fasteners. The components are closely arranged inside the unit housing 1, occupying little space, so as to facilitate movement and arrangement.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Integrated multi-modal energy storage liquid cooling unit structure, comprising a unit shell (1) and a lithium battery pipeline (2) arranged inside the unit shell (1), characterized in that: Two circulating water connection ports (3) are fixedly provided on the top of the outer wall of the unit casing (1). An expansion tank (4) is fixedly provided inside the unit casing (1), and one end of the expansion tank (4) is connected to one circulating water connection port (3). A circulating water pipe (5) is fixedly provided at the other end of the expansion tank (4). One end of the circulating water pipe (5) is connected to one end of the lithium battery pipeline (2). A circulating water pump (6) is fixedly provided inside the unit casing (1). The other end of the lithium battery pipeline (2) is connected to the input end of the circulating water pump (6). The output end of the circulating water pump (6) is connected to another circulating water connection port (3). Two refrigerant interfaces (8) are fixedly provided on the top of the outer wall of the unit casing (1). A compressor (10) is fixedly provided inside the unit casing (1), and the input end of the compressor (10) is connected to a refrigerant interface (8). An expansion valve (9), a refrigerant tank (18), a condenser (11), and a heat exchanger (13) are fixedly provided inside the unit casing (1). A refrigerant pipeline (12) is provided between the output end of the compressor (10), the condenser (11), the expansion valve (9), the heat exchanger (13), and the refrigerant tank (18). A three-way valve (15) is provided between the circulating water pump (6) and the lithium battery pipeline (2), and one end of the three-way valve (15) is connected to the input end of the heat exchanger (13).

2. The integrated multi-modal energy storage liquid cooling chiller structure of claim 1, wherein: A fan (16) is fixedly installed on the outer wall of the unit casing (1), and the fan (16) is located on the outside of the condenser (11).

3. The integrated multimodal energy storage liquid-cooled unit structure according to claim 1, characterized in that: An air inlet (17) is fixedly provided on the rear side of the unit casing (1).

4. The integrated multimodal energy storage liquid-cooled unit structure according to claim 1, characterized in that: One end of the refrigerant storage tank (18) is connected to another refrigerant interface (8).

5. The integrated multimodal energy storage liquid-cooled unit structure according to claim 1, characterized in that: A PTC heater (14) is fixedly installed inside the casing (1) of the unit. One end of the PTC heater (14) is connected to the input end of the circulating water pump (6), and the other end of the PTC heater (14) is connected to the lithium battery pipeline (2).

6. The integrated multimodal energy storage liquid-cooled unit structure according to claim 1, characterized in that: A partition (7) is fixedly installed above the lithium battery pipeline (2).

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