A vanadium flow battery cooling system apparatus

Abstract

The utility model discloses a kind of all-vanadium redox cooling system equipment, belong to all-vanadium redox battery technical field;Including cooling tower, electrolyte A tank cooling structure, electrolyte B tank cooling structure, water cooling unit, water storage tank;B jar first cooling line;B jar second cooling line;A jar first cooling line;A jar second cooling line;The utility model provides coolant to electrolyte A tank cooling structure and electrolyte B tank cooling structure by multiple cooling lines, can realize two electrolyte tanks respectively cooling, and under different air temperature conditions, different cooling conditions can also be selected by switching cooling line, different cooling needs are suitable, and energy consumption is saved.

Description

Technical Field

[0001] This utility model belongs to the field of vanadium redox flow battery technology, specifically to a vanadium redox flow cooling system device. Background Technology

[0002] Vanadium redox flow battery (VRB), also known as vanadium redox flow battery, is a green and environmentally friendly high-capacity energy storage device. Its unique electrochemical principle makes it different from traditional batteries. It has many advantages such as high current charging and discharging resistance, easy capacity adjustment, deep discharge capability, reusable electrolyte, instant charging capability, and long lifespan, and does not cause environmental pollution.

[0003] Vanadium redox flow batteries primarily rely on electrolytes for charging and discharging. The charging and discharging of the electrolyte is affected by its temperature: low electrolyte temperatures hinder initiation, and may even prevent initiation altogether. Conversely, excessively high electrolyte temperatures in flow batteries will negatively impact battery performance and may even lead to electrolyte crystallization, necessitating appropriate cooling.

[0004] Currently, the cooling of existing vanadium redox flow batteries is basically achieved through a cooling method similar to that of air conditioning refrigerant cooling air or refrigerator cooling, using refrigerant to cool the electrolyte and achieving refrigerant circulation through air conditioning or refrigeration.

[0005] Existing vanadium redox flow battery systems are designed with an integrated electrolyte cooling system, meaning the cooling system operates simultaneously with the vanadium redox flow battery. However, the temperature control requirements for the positive and negative electrolyte storage tanks in a vanadium redox flow battery system are different, meaning the cooling effect requirements are different. Furthermore, the cooling effect requirements vary depending on the season and temperature, and existing cooling systems cannot adapt to these differences. Utility Model Content

[0006] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a full vanadium liquid cooling system device. This application provides the following technical solution:

[0007] This includes a cooling tower, a cooling structure for electrolyte tank A, a cooling structure for electrolyte tank B, a water-cooled unit, and a water storage tank.

[0008] The first cooling circuit for tank B consists of a liquid flow loop formed by directly connecting the cooling tower and the electrolyte tank B cooling structure.

[0009] The second cooling circuit for tank B consists of a liquid flow circuit formed by connecting the cooling tower and the water-cooled unit, a liquid flow circuit formed by connecting the water-cooled unit and the water storage tank, and a liquid flow circuit formed by connecting the water storage tank and the cooling structure of the electrolyte tank B.

[0010] The first cooling circuit for tank A consists of a liquid flow loop formed by connecting the cooling tower and the water storage tank, and a liquid flow loop formed by connecting the water storage tank and the cooling structure of the electrolyte tank A.

[0011] The second cooling circuit for tank A consists of a liquid flow circuit formed by connecting the cooling tower and the water-cooled unit, a liquid flow circuit formed by connecting the water-cooled unit and the water storage tank, and a liquid flow circuit formed by connecting the water storage tank and the electrolyte tank A cooling structure.

[0012] The cooling structure of the electrolyte tank A is a heat exchanger.

[0013] The cooling structure of the electrolyte tank B is a cylinder liner.

[0014] A first circulation pump is installed in the liquid flow circuit between the cooling tower and the electrolyte tank B cooling structure; a second circulation pump is installed in the liquid flow circuit between the cooling tower, the water-cooled unit, and the water storage tank; a third circulation pump is installed in the liquid flow circuit between the water-cooled unit and the water storage tank; a fourth circulation pump is installed in the liquid flow circuit between the water storage tank and the electrolyte tank A cooling structure; and a fifth circulation pump is installed in the liquid flow circuit between the water storage tank and the electrolyte tank B cooling structure.

[0015] Both the cooling tower and the water storage tank are equipped with water inlets.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] By supplying coolant to the cooling structures of electrolyte tank A and electrolyte tank B through multiple cooling lines, the two electrolyte tanks can be cooled separately. Furthermore, different cooling conditions can be selected by switching cooling lines under different temperature conditions. Specifically, in late autumn, winter, and early spring when temperatures are low, the first cooling lines of tank B and tank A are used, with only the cooling tower operating to cool the water, saving energy. In spring and autumn when temperatures are not very high, the first cooling line of tank B and the second cooling line of tank A are used. The cooling structure of electrolyte tank B still directly cools the water through the cooling tower, while the cooling structure of electrolyte tank A also uses a water-cooled unit to generate even lower-temperature cooling water. Only in summer when temperatures are high are the second cooling lines of tank B and tank A used, both cooling the water through a water-cooled unit generating even lower-temperature cooling water. Therefore, this invention offers multiple selectable cooling lines, allowing the two electrolyte tanks to be cooled separately to meet different cooling needs while saving energy.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a full vanadium liquid cooling system.

[0021] Figure 2 This is a schematic diagram of the first cooling circuit of tank B in a full vanadium liquid flow cooling system.

[0022] Figure 3 This is a schematic diagram of the second cooling circuit of tank B in a full vanadium liquid flow cooling system.

[0023] Figure 4 This is a schematic diagram of the first cooling circuit of tank A in a full vanadium liquid flow cooling system.

[0024] Figure 5 This is a schematic diagram of the second cooling circuit of tank A in a full vanadium liquid flow cooling system.

[0025] Reference numerals in the attached drawings: 1. Cooling tower; 2. Cooling structure of electrolyte tank A; 3. Cooling structure of electrolyte tank B; 4. Water-cooled unit; 5. Water storage tank; 61. First circulating pump; 62. Second circulating pump; 63. Third circulating pump; 64. Fourth circulating pump; 65. Fifth circulating pump. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Please refer to Figure 1 As shown, this utility model provides a full vanadium liquid flow cooling system, including an electrolyte A tank, an electrolyte B tank, a cooling tower 1, an electrolyte A tank cooling structure 2 for cooling the electrolyte A tank, an electrolyte B tank cooling structure 3 for cooling the electrolyte B tank, a water-cooled unit 4, and a water storage tank 5.

[0030] Electrolyte A and Electrolyte B are used to store the positive and negative electrolytes, respectively. Furthermore, the positive and negative electrolytes that require a lower reaction temperature are stored in Electrolyte A.

[0031] The first cooling circuit of tank B consists of a liquid flow loop formed by directly connecting cooling tower 1 and electrolyte tank B cooling structure 3.

[0032] Specifically, the cooling water outlet of cooling tower 1 is connected to the cooling water inlet of electrolyte tank B cooling structure 3 via a pipe; the cooling water outlet of electrolyte tank B cooling structure 3 is connected back to the cooling water inlet of cooling tower 1 via a pipe.

[0033] The second cooling circuit for tank B consists of a liquid flow circuit formed by connecting cooling tower 1 and water-cooled unit 4, a liquid flow circuit formed by connecting water-cooled unit 4 and water storage tank 5, and a liquid flow circuit formed by connecting water storage tank 5 and electrolyte tank B cooling structure 3.

[0034] Specifically, the water-cooled unit 4 has an evaporator and a condenser, with cooling water heat exchanged inside the evaporator and condenser, and the water storage tank 5 has a low-temperature cooling water inlet, a low-temperature cooling water outlet, a high-temperature cooling water inlet, and a high-temperature cooling water outlet connected to its internal liquid storage space.

[0035] The cooling water outlet of cooling tower 1 is connected to the evaporator cooling water inlet of water-cooled unit 4. The evaporator cooling water outlet of water-cooled unit 4 is connected back to cooling tower 1. The condenser cooling water outlet of water-cooled unit 4 is connected to the low-temperature cooling water inlet of water storage tank 5. The condenser cooling water inlet of water-cooled unit 4 is connected to the high-temperature cooling water outlet of water storage tank 5. The low-temperature cooling water outlet of water storage tank 5 is connected to the cooling water inlet of electrolyte B tank cooling structure 3. The cooling water outlet of electrolyte B tank cooling structure 3 is connected to the high-temperature cooling water inlet of water storage tank 5.

[0036] The first cooling circuit of tank A consists of a liquid flow loop formed by connecting cooling tower 1 and water storage tank 5, and a liquid flow loop formed by connecting water storage tank 5 and electrolyte tank A cooling structure 2.

[0037] Specifically, the cooling water outlet of cooling tower 1 is connected to the low-temperature cooling water inlet of water storage tank 5, the high-temperature cooling water outlet of water storage tank 5 is connected to the cooling water inlet of cooling tower 1, the low-temperature cooling water outlet of water storage tank 5 is connected to the cooling water inlet of electrolyte A tank cooling structure 2, and the cooling water outlet of electrolyte A tank cooling structure 2 is connected to the high-temperature cooling water inlet of water storage tank 5.

[0038] The second cooling circuit for tank A consists of a liquid flow circuit formed by connecting cooling tower 1 and water-cooled unit 4, a liquid flow circuit formed by connecting water-cooled unit 4 and water storage tank 5, and a liquid flow circuit formed by connecting water storage tank 5 and electrolyte tank A cooling structure 2.

[0039] Specifically, the cooling water outlet of cooling tower 1 is connected to the evaporator cooling water inlet of water-cooled unit 4, the evaporator cooling water outlet of water-cooled unit 4 is connected back to cooling tower 1, the condenser cooling water outlet of water-cooled unit 4 is connected to the low-temperature cooling water inlet of water storage tank 5, the condenser cooling water inlet of water-cooled unit 4 is connected to the high-temperature cooling water outlet of water storage tank 5, the low-temperature cooling water outlet of water storage tank 5 is connected to the cooling water inlet of electrolyte A tank cooling structure 2, and the cooling water outlet of electrolyte A tank cooling structure 2 is connected to the high-temperature cooling water inlet of water storage tank 5.

[0040] The cooling structure 2 of the electrolyte A tank is a heat exchanger; it is connected to the electrolyte A tank and the cooling is achieved by exchanging heat with the liquid in the electrolyte A tank through cooling water in the heat exchanger.

[0041] The cooling structure 3 of the electrolyte B tank is a cylinder liner; it is fitted onto the electrolyte B tank.

[0042] A first circulating pump 61 is installed in the liquid flow circuit between cooling tower 1 and electrolyte tank B cooling structure 3; a second circulating pump 62 is installed in the liquid flow circuit between cooling tower 1, water-cooled unit 4, and water storage tank 5; a third circulating pump 63 is installed in the liquid flow circuit between water-cooled unit 4 and water storage tank 5; a fourth circulating pump 64 is installed in the liquid flow circuit between water storage tank 5 and electrolyte tank A cooling structure 2; and a fifth circulating pump 65 is installed in the liquid flow circuit between water storage tank 5 and electrolyte tank B cooling structure 3.

[0043] Furthermore, the aforementioned fluid circuit equipped with a circulating pump is also equipped with a fluid valve for controlling the opening and closing of the pipeline.

[0044] Both cooling tower 1 and water storage tank 5 are equipped with water inlets.

[0045] In specific implementation, during periods of low temperature such as late autumn, winter, and early spring, the first cooling circuit of tank B and the first cooling circuit of tank A are used; the first circulation pump 61 is started, and the cooling water in the liquid flow circuit between cooling tower 1 and electrolyte tank B cooling structure 3 circulates. Cooling tower 1 cools down the cooling water, and the cooling water works to heat up at electrolyte tank B cooling structure 3; the second circulation pump 62 and the fourth circulation pump 64 are started, and the cooling water in the liquid flow circuit between cooling tower 1 and water storage tank 5 cools down the cooling water in water storage tank 5 and replaces it with low-temperature cooling water. The cooling water in the liquid flow circuit between water storage tank 5 and electrolyte tank A cooling structure 2 circulates, and the cooling water works to heat up at electrolyte tank A cooling structure 2 and returns to water storage tank 5.

[0046] When the temperature is not very high in spring and autumn, the first cooling line of tank B and the second cooling line of tank A are used. The first circulation pump 61 is started, and the cooling water in the liquid flow circuit between cooling tower 1 and electrolyte tank B cooling structure 3 circulates. Cooling tower 1 cools down the cooling water, and the cooling water is heated up at electrolyte tank B cooling structure 3. The second circulation pump 62, the third circulation pump 63, and the fourth circulation pump 64 are started, and the cooling water in the liquid flow circuit between cooling tower 1 and water chiller 4, and the cooling water in the liquid flow circuit between water chiller 4 and water storage tank 5 circulates. Cooling tower 1 cools down the cooling water in the evaporator. The condenser exchanges heat with the evaporator to cool down the cooling water in water storage tank 5. The cooling water in water storage tank 5 is heated up at electrolyte tank A cooling structure 2 and returns to water storage tank 5.

[0047] When the summer temperature is high, the second cooling circuit of tank B and the second cooling circuit of tank A are used, and the second circulation pump 62, the third circulation pump 63, the fourth circulation pump 64, and the fifth circulation pump 65 are working. The cooling water circulates in the liquid flow circuit between cooling tower 1 and water chiller 4, and in the liquid flow circuit between water chiller 4 and water storage tank 5. Cooling tower 1 cools the cooling water in the evaporator. The condenser exchanges heat with the evaporator to cool the cooling water in water storage tank 5. The cooling water in water storage tank 5 is heated at the electrolyte tank A cooling structure 2 and the electrolyte tank B cooling structure 3 and then returns to water storage tank 5.

[0048] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A full vanadium liquid cooling system, characterized in that: It includes a cooling tower (1), an electrolyte A tank cooling structure (2), an electrolyte B tank cooling structure (3), a water-cooled unit (4), and a water storage tank (5); The first cooling circuit of tank B consists of a liquid flow loop formed by directly connecting the cooling tower (1) and the electrolyte tank B cooling structure (3); The second cooling circuit for tank B consists of a liquid flow circuit formed by connecting the cooling tower (1) and the water-cooled unit (4), a liquid flow circuit formed by connecting the water-cooled unit (4) and the water storage tank (5), and a liquid flow circuit formed by connecting the water storage tank (5) and the electrolyte tank B cooling structure (3). The first cooling circuit of tank A consists of a liquid flow circuit formed by connecting the cooling tower (1) and the water storage tank (5), and a liquid flow circuit formed by connecting the water storage tank (5) and the electrolyte tank A cooling structure (2); The second cooling circuit for tank A consists of a liquid flow circuit formed by connecting the cooling tower (1) and the water-cooled unit (4), a liquid flow circuit formed by connecting the water-cooled unit (4) and the water storage tank (5), and a liquid flow circuit formed by connecting the water storage tank (5) and the electrolyte tank A cooling structure (2).

2. The all-vanadium liquid cooling system equipment as described in claim 1, characterized in that: The cooling structure (2) of the electrolyte tank A is a heat exchanger.

3. The all-vanadium liquid cooling system equipment as described in claim 1, characterized in that: The cooling structure (3) of the electrolyte tank B is a cylinder liner.

4. The all-vanadium liquid cooling system equipment as described in claim 1, characterized in that: A first circulation pump (61) is installed in the liquid flow circuit between the cooling tower (1) and the electrolyte B tank cooling structure (3); a second circulation pump (62) is installed in the liquid flow circuit between the cooling tower (1), the water-cooled unit (4), and the water storage tank (5); a third circulation pump (63) is installed in the liquid flow circuit between the water-cooled unit (4) and the water storage tank (5); a fourth circulation pump (64) is installed in the liquid flow circuit between the water storage tank (5) and the electrolyte A tank cooling structure (2); and a fifth circulation pump (65) is installed in the liquid flow circuit between the water storage tank (5) and the electrolyte B tank cooling structure (3).

5. The all-vanadium liquid cooling system equipment as described in claim 1, characterized in that: Both the cooling tower (1) and the water storage tank (5) are equipped with water inlets.

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