Electrolyte quick heating device

Abstract

The utility model relates to the technical field of electrochemical energy storage, and aims to provide an electrolyte quick heating device. The electrolyte quick heating device can quickly heat the electrolyte at any time, and is small in energy efficiency loss and relatively good in economic benefit. The electrolyte quick heating device comprises a pipeline assembly, a heating assembly and a flow speed control assembly, one end of the pipeline assembly is an electrolyte inlet, and the other end is an electrolyte outlet; the heating assembly is arranged in the pipeline assembly and comprises a heater, and the heater comprises a heating body and a plurality of heating pieces arranged on the outer wall of the heating body; the flow velocity control assembly comprises a first flow velocity control piece and a second flow velocity control piece which are arranged at the electrolyte inlet and the electrolyte outlet respectively, and the heating assembly is located between the first flow velocity control piece and the second flow velocity control piece. According to the utility model, the problems of large energy efficiency loss, additional time cost increase, over-high energy consumption and poor economic benefit of an electrolyte thermal insulation protection mode in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage, in particular to an electrolyte rapid heating device. Background Art

[0002] All-vanadium flow batteries are large-scale, high-efficiency electrochemical energy storage devices. Unlike other battery energy storage devices, all-vanadium flow batteries store reactive species in an electrolyte solution, separating the electrochemical reaction from the energy storage site. This allows for relatively independent design of battery power and energy storage capacity, making them suitable for large-scale, long-term energy storage. However, all-vanadium flow batteries have high environmental requirements for operation, and the optimal operating temperature range of the all-vanadium flow electrolyte is relatively narrow, typically 30-35°C. Considering that large-scale all-vanadium flow battery energy storage systems are often built in conjunction with large-scale energy bases, which are often located in colder northern regions of my country, such as Xinjiang, Qinghai, Inner Mongolia, and Northeast China, the operating temperature of the all-vanadium flow battery electrolyte is crucial to ensuring the efficient operation of the energy storage system in extremely cold environments.

[0003] Currently, the following methods are commonly used to treat electrolytes in extremely cold environments: one is to add a thermal insulation device to the electrolyte storage device to maintain the internal electrolyte at a suitable operating temperature. However, the energy storage system will be shut down for maintenance regularly. After the shutdown and maintenance, the electrolyte still needs to be restored to the optimal temperature through charging and discharging. The charging and discharging process will cause a large loss of energy efficiency. In addition, when the temperature is high in the summer, the thermal insulation device needs to be removed, which adds additional time costs. Another method is to place the electrolyte storage device in an energy storage container, and then install an air conditioner in the container to adjust the internal temperature through the air conditioner. However, this method requires the air conditioner to work continuously, which consumes too much energy and has poor economic benefits. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing electrolyte thermal insulation protection method, which has large energy efficiency loss, additional time cost, excessive energy consumption and poor economic benefits, thereby providing an electrolyte rapid heating device that can quickly heat the electrolyte at any time, has low energy efficiency loss and good economic benefits.

[0005] In order to solve the above problems, the utility model provides an electrolyte rapid heating device, comprising:

[0006] a pipe assembly, one end of which is an electrolyte inlet and the other end of which is an electrolyte outlet;

[0007] A heating assembly is provided in the pipe assembly, and includes a heater, wherein the heater includes: a heating body and a plurality of heating plates provided on the outer wall of the heating body;

[0008] A flow rate control component includes a first flow rate control member and a second flow rate control member respectively arranged at the electrolyte inlet and the electrolyte outlet, and the heating component is located between the first flow rate control member and the second flow rate control member.

[0009] Optionally, the heating body is a hollow heating tube, and the outer wall of the heating tube is provided with a plurality of flow holes for electrolyte to flow.

[0010] Optionally, the heating plate is blade-shaped, and is provided with a plurality of flow holes for the electrolyte to flow through.

[0011] Optionally, the heating assembly further includes two diverters, which are respectively arranged at two ends of the heater.

[0012] Optionally, the diverter is funnel-shaped, the closing end of the diverter is connected to the heating body, and a plurality of the flow holes are provided on the diverter.

[0013] Optionally, the pipeline assembly includes: an inner tube for electrolyte circulation and an outer insulation tube sleeved on the outside of the inner tube for electrolyte circulation.

[0014] Optionally, the flow rate control component further includes: a first flow rate sensor and a second flow rate sensor, the first flow rate sensor is connected to the first flow rate control component, and the second flow rate sensor is connected to the second flow rate control component.

[0015] Optionally, the first flow rate control component and the second flow rate control component are circulation pumps.

[0016] Optionally, the electrolyte rapid heating device further includes a temperature detection component, and the temperature detection component includes a first temperature sensor and a second temperature sensor respectively arranged at the electrolyte inlet and the electrolyte outlet.

[0017] Optionally, the electrolyte rapid heating device further includes a control unit, which is communicatively connected to the heating component, the flow rate control component, and the temperature detection component.

[0018] The utility model has the following advantages:

[0019] 1. The present invention provides an electrolyte rapid heating device comprising: a pipe assembly, a heating assembly, and a flow rate control assembly. The pipe assembly has an electrolyte inlet at one end and an electrolyte outlet at the other. The electrolyte inlet is connected to an electrolyte storage device, and the electrolyte outlet is connected to an all-vanadium liquid flow battery stack. The heating assembly is disposed within the pipe assembly and includes a heater, which comprises a heating body and a plurality of heating plates disposed on the outer wall of the heating body. The flow rate control assembly includes a first flow rate control member and a second flow rate control member, disposed at the electrolyte inlet and electrolyte outlet, respectively, with the heating assembly located between the first flow rate control member and the second flow rate control member. The electrolyte is heated within the pipe assembly by the heater to a suitable operating temperature, and the flow rate of the electrolyte flowing into and out of the rapid heating device can be controlled by the first and second flow rate control members. The rapid heating device can heat the electrolyte at any time in extremely cold environments, thereby maintaining the electrolyte entering the all-vanadium liquid flow battery stack at a suitable operating temperature, minimizing energy efficiency losses and achieving good economic benefits. Moreover, the contact area between the heater and the electrolyte of this structure is large, and the heating speed is fast.

[0020] 2. The electrolyte rapid heating device provided by the present invention has a heating element that is a hollow heating tube, and the outer wall of the heating tube is provided with a plurality of flow holes for the flow of electrolyte. The heating plate is blade-shaped and also provided with a plurality of flow holes for the flow of electrolyte. This heater increases the flow area of ​​the electrolyte by providing flow holes in the heating tube and the heating plate, thereby reducing the flow resistance of the electrolyte and increasing the contact area between the heater and the electrolyte, thereby improving the heating efficiency.

[0021] 3. The electrolyte rapid heating device provided by the present invention, wherein the heating assembly further comprises two diverters, which are respectively arranged at both ends of the heater. The diverter is funnel-shaped, and the closed end of the diverter is connected to the heating body, and a plurality of flow holes are provided on the diverter. The diverter can also heat the electrolyte by receiving heat from the heater, and the funnel-shaped diverter can increase the heating area and improve the heating speed. In addition, the flow area of ​​the electrolyte is increased by providing a plurality of flow holes without affecting the circulation of the electrolyte.

[0022] 4. The electrolyte rapid heating device provided by the present invention comprises a pipe assembly comprising an inner tube for electrolyte circulation and an outer insulating tube sheathed over the inner tube. The outer insulating tube prevents heat loss from the electrolyte in the inner tube, ensuring that the electrolyte flowing out of the electrolyte outlet remains at an appropriate operating temperature and preventing leakage of the electrolyte in the inner tube.

[0023] 5. The electrolyte rapid heating device provided by the present invention further comprises a flow rate control assembly comprising a first flow rate sensor and a second flow rate sensor, wherein the first flow rate sensor is connected to the first flow rate control element, and the second flow rate sensor is connected to the second flow rate control element. The flow rate control assembly can monitor the electrolyte flow rate at the electrolyte inlet and electrolyte outlet in real time, facilitating regulation and control.

[0024] 6. The electrolyte rapid heating device provided by the present invention also includes a temperature detection assembly, which includes a first temperature sensor and a second temperature sensor, respectively disposed at the electrolyte inlet and the electrolyte outlet. The first and second temperature sensors can monitor the electrolyte temperature at the electrolyte inlet and the electrolyte outlet, facilitating control of the heating assembly based on the temperature parameters.

[0025] 7. The electrolyte rapid heating device provided by the present invention also includes a control unit that is communicatively connected to the heating component, the flow rate control component, and the temperature detection component. The control unit can control each component to ensure that the electrolyte reaches an appropriate operating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the electrolyte rapid heating device of the utility model;

[0028] Figure 2 Schematic diagram of the heater in the electrolyte rapid heating device of the present invention;

[0029] Figure 3 This is a schematic diagram of a flow divider in the electrolyte rapid heating device of the present invention.

[0030] Description of reference numerals:

[0031] 1. Pipe assembly, 11. Inner tube for electrolyte circulation, 12. Outer tube for thermal insulation;

[0032] 2. Heating assembly, 21. Heater, 211. Heating element, 212. Heating plate, 213. Flow hole, 22. Diverter;

[0033] 31. First flow rate control element, 32. Second flow rate control element, 33. First flow rate sensor, 34. Second flow rate sensor;

[0034] 41. a first temperature sensor, 42. a second temperature sensor;

[0035] 5. Control unit. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] like Figure 1 The figure shows a preferred embodiment of the electrolyte rapid heating device of the present invention. This electrolyte rapid heating device is suitable for heating the electrolyte in the all-vanadium liquid flow battery energy storage system to raise the electrolyte temperature to a suitable working temperature.

[0041] The electrolyte rapid heating device includes: a pipe assembly 1, a heating assembly 2 and a flow rate control assembly. The pipe assembly 1 has a channel in the middle for electrolyte circulation, and one end of the pipe assembly 1 is an electrolyte inlet and the other end is an electrolyte outlet. The electrolyte inlet is connected to the electrolyte storage device through a pipe, and the electrolyte outlet is connected to the all-vanadium liquid flow battery stack. The low-temperature electrolyte flowing out of the electrolyte storage device enters the rapid heating device for heating and is then discharged to the all-vanadium liquid flow battery stack. The electrolyte rapid heating device is generally arranged near the all-vanadium liquid flow battery stack to ensure that the heated electrolyte quickly enters the all-vanadium liquid flow battery stack for operation and prevents heat loss. The heating assembly 2 is arranged in the pipe assembly 1 and is used to heat the electrolyte. The heating assembly 2 includes a heater 21, which includes: a heating body 211 and a plurality of heating plates 212 arranged on the outer wall of the heating body 211. The contact area of ​​the heater 21 with this shape is larger and the heating rate is faster. The flow rate control component includes a first flow rate control part 31 and a second flow rate control part 32 respectively arranged at the electrolyte inlet and the electrolyte outlet, that is, the first flow rate control part 31 is used to control the flow rate of the electrolyte flowing into the quick heating device, and the second flow rate control part 32 is used to control the flow rate of the electrolyte flowing out of the quick heating device. And the heating component 2 is located between the first flow rate control part 31 and the second flow rate control part 32. This quick heating device can heat the electrolyte through the heater 21 to increase the temperature so that the electrolyte reaches a suitable working temperature and then enters the all-vanadium liquid flow battery stack to work. In an extremely cold environment, the electrolyte heating work can be carried out quickly at any time, and the heater 21 can be stopped when heating is not needed. It is simple and controllable, and has low energy consumption and good economic benefits.

[0042] The piping assembly 1 comprises an inner tube 11 for electrolyte circulation and an outer insulated tube 12. The outer insulated tube 12 is sheathed over the inner tube 11, creating a double-layer tubular structure. One end of the inner tube 11 serves as the electrolyte inlet, while the other serves as the electrolyte outlet. The outer insulated tube 12 prevents heat loss from the electrolyte in the inner tube, reducing heat loss and ensuring that the electrolyte flowing out of the electrolyte outlet remains at a suitable operating temperature. It also prevents leakage from the inner tube 11.

[0043] Further, such as Figure 2 As shown, the heating body 211 is a hollow heating tube, and the outer wall of the heating tube is provided with a plurality of flow holes 213 for the flow of electrolyte. The heating plate 212 is blade-shaped, and multiple heating plates 212 are evenly spaced on the upper and lower sides of the heating body 211. The heating plates 212 are also provided with a plurality of flow holes 213 for the flow of electrolyte. The provision of the flow holes 213 on the heating body 211 and the heating plates 212 can increase the flow area of ​​the electrolyte and reduce the flow resistance of the electrolyte. In addition, the contact area between the tree-shaped heater 21 and the electrolyte is larger, thereby improving the heating efficiency.

[0044] In other embodiments, the heating plate 212 may also be in various shapes such as square, circular, etc.

[0045] Furthermore, Figure 3 As shown, the heating component 2 also includes two diverters 22, and the two diverters 22 are respectively arranged at the two ends of the heater 21. Specifically, the diverter 22 is funnel-shaped, that is, one end of the diverter 22 is a flared end with a larger opening area, and the other end is a closed end with a smaller opening area. The diverter 22 arranged near the electrolyte inlet has its flared end facing the electrolyte inlet, and the closed end is connected to one end of the heating body 211. The diverter 22 arranged near the electrolyte outlet has its flared end facing the electrolyte outlet, and the closed end is connected to the other end of the heating body 211. And a plurality of flow holes 213 are also provided on the wall surface of the diverter 22 for electrolyte circulation. When the heating body 211 is heated, the diverter 22 can also be heated, and the diverter 22 can also heat the electrolyte when it contacts the electrolyte. The funnel-shaped diverter 22 can increase the heating area and improve the heating speed, and by providing a plurality of flow holes 213, the flow area of ​​the electrolyte is increased without affecting the circulation of the electrolyte.

[0046] In other embodiments, the diverter 22 may also be in other shapes such as a cylinder.

[0047] In addition to the first flow rate control member 31 and the second flow rate control member 32, the flow rate control assembly also includes: a first flow rate sensor 33 and a second flow rate sensor 34. The first flow rate sensor 33 is arranged between the first flow rate control member 31 and the heating assembly 2, and is connected to the first flow rate control member 31. The second flow rate sensor 34 is arranged on the side of the second flow rate control member 32 away from the electrolyte inlet and is connected to the second flow rate control member 32. The specific first flow rate control member 31 and the second flow rate control member 32 are preferably circulating pumps. The electrolyte flow rate of the electrolyte inlet can be detected and regulated by the first flow rate sensor 33 and the first flow rate control member 31, and the electrolyte flow rate of the electrolyte outlet can be detected and regulated by the second flow rate sensor 34 and the second flow rate control member 32.

[0048] The electrolyte rapid heating device also includes a temperature detection assembly, which includes a first temperature sensor 41 and a second temperature sensor 42, respectively disposed at the electrolyte inlet and electrolyte outlet. In this embodiment, the first temperature sensor 41 is disposed between the first flow velocity sensor 33 and the heating assembly 2, and the second temperature sensor 42 is disposed on the side of the second flow velocity sensor 34 away from the electrolyte inlet. By providing the first temperature sensor 41 and the second temperature sensor 42, the electrolyte temperature at the electrolyte inlet and electrolyte outlet can be detected in real time.

[0049] The electrolyte rapid heating device also includes a control unit 5, which is in communication with the heating component 2, the flow rate control component, and the temperature detection component. The first flow rate sensor 33, the second flow rate sensor 34, and the first temperature sensor 41 and the second temperature sensor 42 upload detection data to the control unit 5. The control unit 5 then regulates the first flow rate control component 31, the second flow rate control component 32, and the heater 21 based on the detection data to change the flow rate of the electrolyte at the electrolyte inlet and electrolyte outlet, as well as the heating temperature of the electrolyte.

[0050] The working process of the electrolyte rapid heating device of this embodiment is described as follows:

[0051] The electrolyte is extracted from the electrolyte storage device into the pipeline assembly 1 through the first flow rate control component 31. When the electrolyte contacts the heater 21 and the diverter 22 during the process of flowing from the electrolyte inlet to the electrolyte outlet, heat exchange occurs. The heater 21 and the diverter 22 will heat the electrolyte and heat it to a suitable working temperature. The electrolyte heated to a suitable working temperature is discharged from the electrolyte outlet to the all-vanadium liquid flow battery stack through the second flow rate control component 32 for use. During the entire process, the first flow rate sensor 33 and the second flow rate sensor 34 will detect the electrolyte flow rate at the electrolyte inlet and the electrolyte outlet, and the control unit 5 will control the first flow rate control component 31 and the second flow rate control component 32 to adjust the electrolyte flow rate to meet the use requirements. Synchronously, the first temperature sensor 41 and the second temperature sensor 42 will also detect the electrolyte temperature at the electrolyte inlet and the electrolyte outlet, thereby facilitating the control unit 5 to control the heating temperature of the heater 21.

[0052] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An electrolyte rapid heating device, characterized in that: include: A pipe assembly (1), wherein one end of the pipe assembly (1) is an electrolyte inlet and the other end is an electrolyte outlet; A heating assembly (2), the heating assembly (2) being arranged in the pipeline assembly (1), comprising a heater (21), the heater (21) comprising: a heating body (211) and a plurality of heating plates (212) arranged on the outer wall of the heating body (211); A flow rate control component comprises a first flow rate control member (31) and a second flow rate control member (32) respectively arranged at the electrolyte inlet and the electrolyte outlet, and the heating component (2) is located between the first flow rate control member (31) and the second flow rate control member (32).

2. The electrolyte rapid heating device according to claim 1, characterized in that: The heating body (211) is a hollow heating tube, and the outer wall of the heating tube is provided with a plurality of flow holes (213) for electrolyte to flow.

3. The electrolyte rapid heating device according to claim 2, characterized in that: The heating plate (212) is blade-shaped, and is provided with a plurality of flow holes (213) for the electrolyte to flow through.

4. The electrolyte rapid heating device according to claim 2, characterized in that: The heating assembly (2) further comprises two diverters (22), and the two diverters (22) are respectively arranged at two ends of the heater (21).

5. The electrolyte rapid heating device according to claim 4, characterized in that: The diverter (22) is funnel-shaped, the closing end of the diverter (22) is connected to the heating body (211), and a plurality of flow holes (213) are provided on the diverter (22).

6. The electrolyte rapid heating device according to claim 1, characterized in that: The pipeline assembly (1) comprises an electrolyte circulation inner tube (11) and a heat-insulating outer tube (12) sleeved on the outside of the electrolyte circulation inner tube (11).

7. The electrolyte rapid heating device according to claim 1, characterized in that: The flow rate control assembly further comprises: a first flow rate sensor (33) and a second flow rate sensor (34), wherein the first flow rate sensor (33) is connected to the first flow rate control member (31), and the second flow rate sensor (34) is connected to the second flow rate control member (32).

8. The electrolyte rapid heating device according to claim 7, characterized in that: The first flow rate control component (31) and the second flow rate control component (32) are circulation pumps.

9. The electrolyte rapid heating device according to claim 7, characterized in that: It also includes a temperature detection component, which includes a first temperature sensor (41) and a second temperature sensor (42) respectively arranged at the electrolyte inlet and the electrolyte outlet.

10. The electrolyte rapid heating device according to claim 9, characterized in that: It also includes a control unit (5), which is communicatively connected with the heating component (2), the flow rate control component, and the temperature detection component.

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