Flow battery heating device and flow battery

Abstract

The utility model provides a flow battery heating device and a flow battery. The flow battery heating device comprises a main body part, a controller and an electric heating piece, a heating channel is formed in the main body part, a liquid inlet and a liquid outlet are respectively formed in the main body part of the heating channel, the liquid inlet is used for being communicated with a positive electrode liquid storage tank or a negative electrode liquid storage tank of the flow battery, the liquid outlet is used for being communicated with an electric pile of the flow battery, and the liquid inlet is used for allowing electrolyte to enter the heating channel; the liquid outlet is used for discharging the electrolyte in the heating channel out of the heating channel; an electric heating piece is arranged in the heating channel, and the controller is arranged on the main body part and electrically connected with the electric heating piece; the electrolyte can be heated by the electric heating piece in the heating channel in the process of flowing into the electric pile from the positive electrode liquid storage tank or the negative electrode liquid storage tank, so that the energy consumption of heating the electrolyte is reduced, the temperature rise speed of heated electrolysis is improved, the flow battery heating device has a relatively good heating effect, and the use cost of the flow battery in a low-temperature environment is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid flow batteries, and in particular to a liquid flow battery heating device and a liquid flow battery. Background Art

[0002] Liquid flow batteries have the advantages of large scale, high safety, long life, and can achieve decoupling of energy and power. They have become one of the most promising large-scale energy storage devices. However, the current applicable temperature of liquid flow batteries is mostly above 10°C, and the battery efficiency is low in high-altitude cold areas and cold conditions in winter. In order to ensure the normal operation of liquid flow batteries, heating equipment is usually installed on the positive electrode storage tank and the negative electrode storage tank to increase the temperature of the electrolyte in the positive electrode storage tank and the negative electrode storage tank so that the electrolyte entering the battery stack can react normally. However, the equipment related to liquid flow batteries is large in size, the heating effect of the heating device is not obvious, and the heating energy consumption is high, which affects the use and promotion of liquid flow batteries. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a liquid flow battery heating device and a liquid flow battery.

[0004] The present disclosure provides a flow battery heating device, comprising a main body, a controller and an electric heating element;

[0005] A heating channel is formed inside the main body, and a liquid inlet and a liquid outlet are formed in the main body, the liquid inlet is used to communicate with the positive electrode liquid storage tank or the negative electrode liquid storage tank of the liquid flow battery, the liquid outlet is used to communicate with the battery stack of the liquid flow battery, and the liquid inlet is used to supply electrolyte to enter the heating channel, and the liquid outlet is used to supply the electrolyte in the heating channel to discharge the heating channel;

[0006] The electric heating element is arranged in the heating channel, and the controller is arranged on the main body and is electrically connected to the electric heating element.

[0007] Optionally, the heating channel includes at least two straight line segments and at least one connecting segment, a plurality of the straight line segments extend along a first direction, and a plurality of the straight line segments are arranged at intervals along a second direction, each two adjacent straight line segments are connected to each other via a connecting segment, two of the straight line segments located at both ends of the plurality of straight line segments respectively form the liquid inlet and the liquid outlet on the main body, and the electric heating element is arranged in the straight line segments; the first direction is perpendicular to the second direction.

[0008] Optionally, there are multiple electric heating elements, and the multiple electric heating elements are arranged in a one-to-one correspondence in the multiple straight line segments.

[0009] Optionally, the electric heating element extends along an extension direction of the straight line segment.

[0010] Optionally, the liquid inlet and the liquid outlet are respectively formed on two opposite sides of the main body.

[0011] Optionally, the liquid inlet and the liquid outlet are formed on one side of the main body.

[0012] Optionally, a first temperature detector and a second temperature detector are provided in the heating channel, the first temperature detector is provided at the liquid inlet, and the second temperature detector is provided at the liquid outlet;

[0013] The first temperature detector and the second temperature detector are electrically connected to the controller, so that the detection results of the first temperature detector and the second temperature detector are transmitted to the controller.

[0014] Optionally, the controller is provided with a display screen electrically connected to the controller, and the display screen displays the detection results of the first temperature detector and the second temperature detector.

[0015] Optionally, a control button is provided on the controller, and the control button is used to output a control signal to the controller so that the controller controls the operation of the electric heating element.

[0016] Optionally, the electric heating element includes an isolating element and a heating resistance wire, the heating resistance wire is arranged on the inner wall of the heating channel, and the isolating element is sleeved on the outside of the heating resistance wire and connected to the inner wall of the heating channel to isolate the heating resistance wire from the electrolyte.

[0017] The disclosed embodiment also provides a liquid flow battery, comprising a battery stack, a positive electrode liquid storage tank, a negative electrode liquid storage tank, and two liquid flow battery heating devices as described in any one of the above items;

[0018] The liquid inlet of one of the main bodies is in communication with the positive electrode liquid storage tank, and the liquid outlet is in communication with the battery stack, so that the liquid in the positive electrode liquid storage tank enters the battery stack through the heating channel;

[0019] The liquid inlet of the other main body is communicated with the negative electrode liquid storage tank, and the liquid outlet is communicated with the fuel cell stack, so that the liquid in the negative electrode liquid storage tank enters the fuel cell stack through the heating channel.

[0020] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0021] The present disclosure provides a liquid flow battery heating device and a liquid flow battery. The liquid flow battery heating device includes a main body, a controller and an electric heating element. A heating channel is formed inside the main body, and the heating channel is respectively formed with a liquid inlet and a liquid outlet on the main body. The liquid inlet is used to communicate with the positive electrode storage tank or the negative electrode storage tank of the liquid flow battery, and the liquid outlet is used to communicate with the battery stack of the liquid flow battery. The liquid inlet is used to supply electrolyte to enter the heating channel, and the liquid outlet is used to supply electrolyte in the heating channel to discharge the heating channel, so that the electrolyte in the positive electrode storage tank and the negative electrode storage tank can enter the battery stack through the heating channel. The heating channel is provided with an electric heating element, and the controller is arranged on the main body and is electrically connected to the electric heating element. The electrolyte In the process of the liquid flowing from the positive electrode storage tank or the negative electrode storage tank into the battery stack, it can be heated by the electric heating element in the heating channel, so that the electrolyte entering the battery stack reaches a suitable working temperature. Compared with the heating device for heating the electrolyte in the positive electrode storage tank and the negative electrode storage tank, the liquid flow battery heating device only needs to heat the electrolyte flowing through the heating channel, reducing the mass of the electrolyte that needs to be heated at the same time, thereby reducing the energy consumption of heating the electrolyte and increasing the heating rate of the heated electrolyte, so that the liquid flow battery heating device has a better heating effect, reduces the use cost of the liquid flow battery in a low temperature environment, and is conducive to the application and promotion of the liquid flow battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a schematic diagram of the internal structure of the flow battery heating device according to an embodiment of the present disclosure;

[0025] Figure 2 This is a schematic diagram of the structure of the liquid flow battery described in the embodiment of the present disclosure.

[0026] Among them, 1. main body; 11. liquid inlet; 12. liquid outlet; 13. heating channel; 131. straight section; 132. connecting section; 2. controller; 21. display screen; 22. control button; 3. electric heating element; 41. first temperature detector; 42. second temperature detector; 5. positive electrode liquid storage tank; 51. positive electrode liquid infusion tube; 52. positive electrode liquid return tube; 6. negative electrode liquid storage tank; 61. negative electrode liquid infusion tube; 62. negative electrode liquid return tube; 7. battery stack. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0029] Reference Figure 1 As shown, an embodiment of the present disclosure provides a liquid flow battery heating device, including a main body 1, a controller 2 and an electric heating element 3; a heating channel 13 is formed inside the main body 1, and the heating channel 13 is respectively formed with a liquid inlet 11 and a liquid outlet 12 on the main body 1, the liquid inlet 11 is used to communicate with the electrolyte storage tank of the liquid flow battery, and the liquid outlet 12 is used to communicate with the battery stack of the liquid flow battery, and the liquid inlet 11 is used to allow electrolyte to enter the heating channel 13, and the liquid outlet 12 is used to allow electrolyte in the heating channel 13 to discharge from the heating channel 13; the electric heating element 3 is provided in the heating channel 13, and the controller 2 is arranged on the main body 1 and is electrically connected to the electric heating element 3.

[0030] Specifically, the main body 1 can be selected as a shell structure, the interior of the main body 1 is hollow, and the two ends of the main body 1 along the length direction of the main body 1 are respectively provided with through holes connected to the internal space of the main body 1 as the liquid inlet 11 and the liquid outlet 12, so that the space inside the main body 1 is used as the heating channel 13. Of course, two through holes connected to the internal space of the main body 1 can also be selected on one side surface of the main body 1 as the liquid inlet 11 and the liquid outlet 12. As long as the electrolyte can enter the heating channel 13 through the liquid inlet 11, the electrolyte is heated by the electric heating element 3 in the heating channel 13, and the heated electrolyte is discharged from the heating channel 13 through the liquid outlet 12.

[0031] When the above-mentioned liquid inlet 11 and liquid outlet 12 are located on two opposite sides of the main body 1, the heating channel 13 can be selected as a linear channel, and of course the heating channel 13 can also be selected to be an "S"-shaped channel after multiple bends; when the liquid inlet 11 and the liquid outlet 12 are located on one side of the main body 1, the heating channel 13 can be selected to be a "U"-shaped channel formed by bending once, and of course the heating channel 13 can also be selected to be an "S"-shaped channel after multiple bends.

[0032] The above-mentioned controller 2 can be selected as a small computer or a circuit board with a control function. The electric heating element 3 is connected to the controller 2, and the controller 2 is connected to the power supply, so that the controller 2 can control the operation of the electric heating element 3 by controlling the power supply to the electric heating element 3, so that the controller 2 can control the heating temperature of the electrolyte in the heating channel 13 by the electric heating element 3.

[0033] The electric heating element 3 may include a heating wire and an insulating film, the heating wire is connected to the controller 2, and the insulating film covers the surface of the heating wire to isolate the heating wire from the electrolyte, thereby preventing the resistance wire from chemically reacting with the electrolyte. Of course, the electric heating element may also be an infrared heater, the infrared heater is provided with a heating plate, and the heating plate is located on the inner wall of the heating channel 13.

[0034] The above-mentioned liquid flow battery usually includes a battery stack 7, a positive electrode storage tank 5, and a negative electrode storage tank 6. The positive electrode storage tank 5 is connected to the battery stack 7 through two pipes, so that the electrolyte stored in the positive electrode storage tank 5 can circulate between the positive electrode storage tank 5 and the battery stack 7. The negative electrode storage tank 6 is connected to the battery stack 7 through two pipes, so that the electrolyte stored in the negative electrode storage tank 6 can circulate between the negative electrode storage tank 6 and the battery stack 7.

[0035] The liquid inlet 11 of the main body 1 is connected to the positive electrode liquid storage tank 5 through a pipeline, and the liquid outlet 12 of the main body 1 is connected to the battery stack 7, so that the electrolyte in the positive electrode liquid storage tank 5 enters the heating channel 13 through the liquid inlet 11 for heating, and then enters the battery stack 7 through the liquid outlet 12 for reaction. The liquid inlet 11 of the main body 1 is connected to the negative electrode liquid storage tank 6 through a pipeline, and the liquid outlet 12 of the main body 1 is connected to the battery stack 7, so that the electrolyte in the negative electrode liquid storage tank 6 enters the heating channel 13 through the liquid inlet 11 for heating, and then enters the battery stack 7 through the liquid outlet 12 for reaction, so that the temperature of the electrolyte entering the battery stack 7 reaches a temperature at which the reaction can be carried out, thereby ensuring that the liquid flow battery can work normally in a low temperature environment.

[0036] When the flow battery heating device provided by the embodiment of the present disclosure is used, the main body 1 is arranged between the electrolyte storage tank and the battery stack of the flow battery, the liquid inlet 11 is connected to the electrolyte storage tank through a conduit, and the liquid outlet 12 is connected to the battery stack through a conduit, so that the electrolyte in the electrolyte storage tank enters the heating channel 13 and is heated by the electric heating element 3, and the heated electrolyte is discharged from the heating channel 13 through the liquid outlet 12 and enters the battery stack for reaction. The temperature of the electric heating element 3 is controlled by the controller 2 to regulate the temperature of the electrolyte passing through the heating channel 13.

[0037] The liquid flow battery heating device provided by the embodiment of the present disclosure includes a main body 1, a controller 2 and an electric heating element 3; a heating channel 13 is formed inside the main body 1, and the heating channel 13 is respectively formed with a liquid inlet 11 and a liquid outlet 12 on the main body 1, the liquid inlet 11 is used to communicate with the positive electrode storage tank 5 or the negative electrode storage tank 6 of the liquid flow battery, and the liquid outlet 12 is used to communicate with the battery stack 7 of the liquid flow battery, and the liquid inlet 11 is used to supply electrolyte to enter the heating channel 13, and the liquid outlet 12 is used to supply electrolyte in the heating channel 13 to discharge the heating channel 13, so that the electrolyte in the positive electrode storage tank 5 and the negative electrode storage tank 6 can enter the battery stack 7 through the heating channel 13; the heating channel 13 is provided with an electric heating element 3, and the controller 2 is used to connect the positive electrode storage tank 5 and the negative electrode storage tank 6 to the heating channel 13. 2 is arranged on the main body 1 and is electrically connected to the electric heating element 3; the electrolyte can be heated by the electric heating element 3 in the heating channel 13 during the process of flowing from the positive electrode storage tank or the negative electrode storage tank into the battery stack, so that the electrolyte entering the battery stack 7 reaches a suitable working temperature. Compared with the heating device for heating the electrolyte in the positive electrode storage tank and the negative electrode storage tank, the liquid flow battery heating device only needs to heat the electrolyte flowing through the heating channel, which reduces the mass of the electrolyte that needs to be heated at the same time, thereby reducing the energy consumption of heating the electrolyte, and improving the heating rate of the heated electrolyte, so that the liquid flow battery heating device has a better heating effect, reduces the use cost of the liquid flow battery in a low temperature environment, and is conducive to the application and promotion of the liquid flow battery.

[0038] Reference Figure 1 As shown, in some embodiments, the heating channel 13 includes at least two straight segments 131 and at least one connecting segment 132, the plurality of straight segments 131 extend along the first direction, and the plurality of straight segments 131 are arranged at intervals along the second direction, and each two adjacent straight segments 131 are connected and communicated with each other through a connecting segment 132, and the two straight segments 131 at the two ends of the plurality of straight segments 131 respectively form a liquid inlet 11 and a liquid outlet 12 on the main body 1, and the electric heating element 3 is arranged in the straight segment 131; the first direction is perpendicular to the second direction. In this arrangement, the reduction of two straight segments 131 and at least one connecting segment 132 can increase the distance that the electrolyte flows through, reduce the flow rate of the electrolyte, prolong the time for the electrolyte to exchange heat with the electric heating element 3 in the heating channel 13, and enhance the heating effect of the electric heating element 3 on the electrolyte in the heating channel 13.

[0039] Specifically, the liquid inlet 11 and the liquid outlet 12 can be selected to be located on both sides of the main body 1 along the length direction of the main body 1, respectively, and a partition is arranged in the internal space of the main body 1, one side of the partition along the width direction of the main body 1 is connected to the inner wall of the heating channel 13, and the other side is spaced from the inner wall of the heating channel 13 to form a connecting port, so that the electrolyte on one side of the partition can flow to the other side of the partition through the connecting port; the partition divides the heating channel into two straight segments 131 and a connecting segment 132, the space between the partition and the internal space of the heating channel 13 is the connecting segment 132, the two straight segments 131 are connected through a connecting segment 132, the two straight segments 131 are spaced along the length direction of the main body 1, and the two straight segments 131 extend along the width direction of the main body 1, the two straight segments 131 respectively form the liquid inlet 11 and the liquid outlet 12 on the main body 1, at this time, the length direction of the main body 1 is the second direction, and the width direction of the main body 1 is the first direction.

[0040] Of course, it is also possible to choose to set a plurality of partitions in the internal space of the main body 1, the liquid inlet 11 and the liquid outlet 12 are set at both ends of the main body 1 along the length direction of the main body 1, and the plurality of partitions are arranged at intervals along the length direction of the main body 1, and each adjacent two partitions form a connecting port with the inner walls of the heating channel 13 on both sides opposite to each other along the width direction of the main body 1, so that the plurality of partitions form a plurality of straight segments 131 in the heating channel 13, and each adjacent two straight segments 131 are connected through a connecting segment 132, so that the plurality of straight segments 131 and the plurality of connecting segments 132 cooperate with each other to form an S-shaped heating channel 13, at which time the length direction of the main body 1 is the second direction, and the width direction of the main body 1 is the first direction. The straight segments 131 at both ends of the plurality of straight segments 131 spaced along the second direction respectively form the liquid inlet 11 and the liquid outlet 12 on the main body 1, and the liquid inlet 11 and the liquid outlet 12 can be respectively located on opposite sides of the main body 1, and of course, the liquid inlet 11 and the liquid outlet 12 can also be respectively located on the same side of the main body 1.

[0041] Of course, it is also possible to choose to form a heating channel 13 including at least two straight segments 131 and at least one connecting segment 132 in the main body 1 by cutting and drilling, wherein the straight segments extend along the length direction of the main body 1, and multiple straight segments are arranged at intervals along the width direction of the main body 1, so that two straight segments 131 and one connecting segment 132 form a U-shaped channel, multiple straight segments 131 and multiple connecting segments 132 form a connected S-shaped channel, and the straight segments 131 at both ends of the multiple straight segments 131 spaced along the second direction respectively form a liquid inlet 11 and a liquid outlet 12 on the main body 1. At this time, the length direction of the main body 1 is the first direction, and the width direction of the main body 1 is the second direction.

[0042] Reference Figure 1As shown, in some embodiments, there are multiple electric heating elements 3, and the multiple electric heating elements 3 are arranged one by one in multiple straight segments 131. In this way, the multiple electric heating elements 3 in the heating channel 13 can perform heat exchange with the electrolyte together, thereby increasing the temperature rise rate of the electrolyte in the heating channel 13, thereby improving the heating effect of the flow battery heating device.

[0043] Specifically, the number of electric heating elements 3 is the same as the number of straight line segments 131, so that an electric heating element 3 is set in each straight line segment 131. The electric heating element 3 in the straight line segment 131 can be selected to be set at one end of the straight line segment 131, and of course, it can also be selected to be set in the middle of the straight line segment 131. The electric heating element 3 can be selected to extend along the extension direction of the straight line segment 131.

[0044] Reference Figure 1 As shown, in some embodiments, the electric heating element 3 extends along the extension direction of the straight section 131. Such a configuration can prolong the contact time between the electrolyte and the electric heating element 3 when flowing along the straight section 131, so that the electrolyte and the electric heating element 3 can perform sufficient heat exchange, thereby increasing the temperature rise speed of the electrolyte in the heating channel 13.

[0045] Specifically, the electric heating element 3 may be selectively arranged on the inner wall of the heating channel 13 , and the electric heating element 3 extends along the extension direction of the straight line segment 131 where the electric heating element 3 is located, that is, the electric heating element 3 extends along the first direction.

[0046] Reference Figure 1 As shown, in some embodiments, the liquid inlet 11 and the liquid outlet 12 are respectively formed on opposite sides of the main body 1. This arrangement facilitates the main body 1 to be arranged in the pipeline of the flow battery, avoids the need to bend the pipeline to adapt to the liquid inlet 11 and the liquid outlet 12, and reduces the position occupied by the main body 1 on the pipeline of the flow battery.

[0047] Specifically, the liquid inlet 11 and the liquid outlet 12 can be selected to be located on both sides of the main body 1 along the first direction or the second direction respectively. When using pipes to connect the liquid inlet 11 and the liquid outlet 12, it is convenient to arrange the pipes and avoid the need to bend the pipes to increase the difficulty of installing the liquid flow battery heating device.

[0048] In some embodiments, the liquid inlet 11 and the liquid outlet 12 are formed on one side of the main body 1. With such a configuration, when the main body 1 is installed in the pipeline of the flow battery, since the liquid inlet 11 and the liquid outlet 12 are on the same side, only an operating space needs to be left on the side of the main body 1 where the liquid inlet 11 and the liquid outlet 12 are provided to realize the operation of installing the flow battery heating device in the flow battery, which is convenient for the user to connect the pipeline with the liquid inlet 11 and the liquid outlet 12 of the main body 1, thereby improving the convenience of installing the flow battery heating device in the flow battery.

[0049] Specifically, the heating channel 13 can be selected as a U-shaped channel, so that the heating channel 13 is formed on one side of the main body 1. Of course, the heating channel 13 can also be selected as a plurality of S-shaped channels connected in sequence, so that the channels at both ends of the plurality of S-shaped channels connected in sequence form a liquid inlet 11 and a liquid outlet 12 on one side of the main body 1 respectively.

[0050] Reference Figure 1 As shown, in some embodiments, a first temperature detector 41 and a second temperature detector 42 are provided in the heating channel 13, the first temperature detector 41 is provided at the liquid inlet 11, and the second temperature detector 42 is provided at the liquid outlet 12;

[0051] The first temperature detector 41 and the second temperature detector 42 are electrically connected to the controller 2 so that the detection results of the first temperature detector 41 and the second temperature detector 42 are transmitted to the controller 2. In this way, the first temperature detector 41 can detect the temperature of the electrolyte at the liquid inlet 11, and the second temperature detector 42 can detect the temperature of the liquid outlet 12. The controller 2 can compare the temperature of the electrolyte at the liquid inlet 11 with the temperature of the electrolyte at the liquid outlet 12 to determine the temperature rise of the electrolyte in the heating channel 13, thereby adjusting the temperature of the electric heating element 3 accordingly to avoid the low temperature of the electric heating element 3 affecting the heating effect of the electrolyte, thereby realizing the automatic control of the heating temperature of the electric heating element 3.

[0052] Specifically, the first temperature detector 41 and the second temperature detector 42 can be selected to be both arranged on the inner wall of the heating channel 13, and the first temperature detector 41 and the second temperature detector 42 are both connected to the inner wall of the straight section 131, the first temperature detector 41 is close to the liquid inlet 11, so that the first temperature detector 41 can detect the temperature of the electrolyte at the liquid inlet 11, and the second temperature detector 42 is close to the liquid outlet 12, so that the second temperature detector 42 can detect the temperature of the liquid outlet 12; the detection results of the first temperature detector 41 and the second temperature detector 42 are transmitted to the controller 2, so that the controller 2 can compare the temperature of the electrolyte at the liquid inlet 11 and the temperature of the electrolyte out of the liquid outlet 12 to determine the temperature rise of the electrolyte in the heating channel 13, thereby adjusting the temperature of the electric heating element 3 accordingly to ensure that the electric heating element 3 can make the electrolyte passing through the heating channel 13 at a temperature at which it can react normally.

[0053] Reference Figure 1As shown, in some embodiments, the controller 2 is provided with a display screen 21 electrically connected to the controller 2, and the display screen 21 displays the detection results of the first temperature detector 41 and the second temperature detector 42. In this way, the display screen 21 can intuitively display the temperature of the electrolyte at the liquid inlet 11 and the temperature of the electrolyte at the liquid outlet 12, so that the user can adjust the heating temperature of the electric heating element 3 according to the detection results displayed on the display screen 21, and it is convenient for the user to confirm the temperature of the electrolyte at the liquid inlet 11 and the temperature of the electrolyte at the liquid outlet 12.

[0054] Specifically, the display screen 21 is electrically connected to the controller 2, so that the detection results of the first temperature detector 41 and the second temperature detector 42 received by the controller 2 can be displayed on the display screen 21. The user can intuitively determine the temperature of the electrolyte at the liquid inlet 11 and the temperature of the electrolyte at the liquid outlet 12 through the display screen 21, so that the user can instantly control the heating temperature of the electric heating element 3 through the controller 2.

[0055] Reference Figure 1 As shown, in some embodiments, the controller 2 is provided with a control button 22, which is used to output a control signal to the controller 2 so that the controller 2 controls the operation of the electric heating element 3. In this way, the user can control the controller 2 through the control button 22, so that the controller 2 adjusts the current of the electric heating element 3 load and the power-on time of the electric heating element 3, so as to adjust the heating effect of the electric heating element 3 on the electrolyte in the heating channel 13.

[0056] Specifically, the controller 2 may be optionally provided with a plurality of control buttons 22 , so that when the plurality of control buttons 22 are pressed, the current on the electric heating element 3 can be increased or decreased respectively, thereby controlling the temperature of the electric heating element 3 .

[0057] Of course, you can also choose to have multiple control buttons 22 on the controller 2, and the multiple control buttons 22 include a mode button, a setting button, an increase button and a decrease button; the controller has a control program inside, and the control program can adjust the power-on time and the power-on current of the electric heating element 3. The mode button is used to switch the control program inside the controller 2, so that the control program switches between adjusting the power-on time and the power-on current; the setting button, when the type of control program is selected, pressing the setting button can keep the controller in the currently selected program, so that when the user presses the increase button or the decrease button, the power-on time and the power-on current of the electric heating element 3 can be correspondingly increased.

[0058] Reference Figure 1As shown, in some embodiments, the electric heating element 3 includes an isolating element and a heating resistance wire, the heating resistance wire is arranged on the inner wall of the heating channel 13, and the isolating element is sleeved on the outer side of the heating resistance wire and connected to the inner wall of the heating channel 13 to isolate the heating resistance wire from the electrolyte. In this way, the heat of the heating resistance wire can heat up the isolating element, so that the isolating element and the electrolyte exchange heat to heat the electrolyte, and the isolating element can isolate the heating resistance wire and the electrolyte to avoid the reaction between the heating resistance wire and the electrolyte, thereby ensuring that the electric heating element 3 can work stably in the heating channel 13.

[0059] Specifically, the isolation layer can be selected as a glass tube or a quartz tube, and the heating resistance wire is arranged inside the glass tube or the quartz tube, so that the heat of the heating resistance wire can be transferred to the electrolyte through the glass tube or the quartz tube, so that the heating resistance wire can be heated up, and the glass tube or the quartz tube can isolate the heating resistance wire from contact with the electrolyte, avoiding reaction between the heating resistance wire and the electrolyte.

[0060] Reference Figure 1 and Figure 2 As shown, the embodiment of the present disclosure also provides a liquid flow battery, including a battery stack 7, a positive electrode liquid storage tank 5, a negative electrode liquid storage tank 6 and two liquid flow battery heating devices as described above; the positive electrode liquid storage tank 5 is connected to the battery stack 7, and the negative electrode liquid storage tank 6 is connected to the battery stack 7; the liquid inlet 11 of one main body 1 is connected to the positive electrode liquid storage tank 5, and the liquid outlet 12 is connected to the battery stack 7, so that the liquid in the positive electrode liquid storage tank 5 enters the battery stack 7 through the heating channel 13; the liquid inlet 11 of the other main body 1 is connected to the negative electrode liquid storage tank 6, and the liquid outlet 12 is connected to the battery stack 7, so that the liquid in the negative electrode liquid storage tank 6 enters the battery stack 7 through the heating channel 13.

[0061] Specifically, Figure 2 The direction indicated by the middle arrow is the flow direction of the electrolyte. The positive electrode storage tank 5 is connected to the battery stack 7 through the positive electrode infusion pipe 51, and the battery stack 7 is connected to the positive electrode storage tank 5 through the positive electrode return pipe 52, so that the electrolyte in the positive electrode storage tank 5 flows into the battery stack 7 through the positive electrode infusion pipe 51 for reaction, and then flows back to the positive electrode storage tank 5 through the positive electrode return pipe 52; the negative electrode storage tank 6 is connected to the battery stack 7 through the negative electrode infusion pipe 61, and the battery stack 7 is connected to the negative electrode storage tank 6 through the negative electrode return pipe 62, so that the electrolyte in the negative electrode storage tank 6 flows into the battery stack 7 through the negative electrode infusion pipe 61 for reaction, and then flows back to the negative electrode storage tank 6 through the negative electrode return pipe 62.

[0062] The above-mentioned main body 1 is arranged on the positive electrode infusion tube 51, and part of the positive electrode infusion tube 51 can be selected to be removed to form two sections of positive electrode infusion tubes, one main body 1 is arranged between the two sections of positive electrode infusion tubes, and one section of the positive electrode infusion tube connected to the positive electrode storage tank 5 is connected to the liquid inlet 11, and one section of the positive electrode infusion tube connected to the battery stack 7 is connected to the liquid outlet 12; part of the negative electrode infusion tube 61 can be selected to be removed to form two sections of negative electrode infusion tubes, the other main body 1 is arranged between the two sections of negative electrode infusion tubes, and one section of the negative electrode infusion tube connected to the negative electrode storage tank 6 is connected to the liquid inlet 11, and one section of the negative electrode infusion tube connected to the battery stack 7 is connected to the liquid outlet 12.

[0063] Of course, you can also choose one main body 1 with its liquid inlet 11 connected to the positive electrode liquid storage tank 5 and its liquid outlet 12 connected to the positive electrode liquid infusion tube 51, and another main body 1 with its liquid inlet 11 connected to the negative electrode liquid storage tank 6 and its liquid outlet 12 connected to the negative electrode liquid infusion tube 61.

[0064] By using the above-mentioned liquid flow battery heating device in the liquid flow battery, the electrolyte in the positive electrode storage tank 5 enters the heating channel 13 through the liquid inlet 11 for heating, the heated electrolyte enters the battery stack 7 through the liquid outlet 12 for reaction, and the electrolyte after the reaction returns to the positive electrode storage tank 5, and the electrolyte in the negative electrode storage tank 6 enters the heating channel 13 through the liquid inlet 11 for heating, the heated electrolyte enters the battery stack 7 through the liquid outlet 12 for reaction, and the electrolyte after the reaction returns to the negative electrode storage tank 6; in the process of the circulation of the electrolyte, the liquid flow battery heating device heats the electrolyte flowing into the battery stack 7 from the positive electrode storage tank 5 and the negative electrode storage tank 6 to quickly heat the electrolyte that is about to enter the battery stack 7 for reaction, so that the electrolyte can react normally in the battery stack 7, and the heating and insulation range of the liquid flow battery is focused on the battery stack, thereby reducing the heating range and energy consumption. The heated electrolyte entering the battery stack can increase the temperature of the battery stack and improve the reaction efficiency. The electrolyte will still maintain a certain temperature after flowing out of the battery stack 7. After the electrolyte flowing out of the battery stack 7 enters the positive electrode storage tank 5 and the negative electrode storage tank 6, the electrolyte temperature in the positive electrode storage tank 5 and the negative electrode storage tank 6 can be prevented from being too low. The flow battery heating device can be conveniently installed on the pipeline of the flow battery to heat the electrolyte entering the battery stack 7, without modifying the positive electrode storage tank 5 and the negative electrode storage tank 6, thereby reducing the installation cost of the flow battery heating device.

[0065] When the liquid flow battery heating device and liquid flow battery provided by the embodiments of the present disclosure are used, the liquid inlet 11 of one main body 1 is connected to the positive electrode liquid infusion pipe 51 of the positive electrode liquid storage tank 5, and the liquid outlet 12 is connected to the battery stack 7; the liquid inlet 11 of the other main body 1 is connected to the negative electrode liquid infusion pipe 61 of the negative electrode liquid storage tank 6, and the liquid outlet 12 is connected to the battery stack 7.

[0066] After the liquid flow battery is started, the user powers on the electric heating element 3 through the controller 2 to make the electric heating element 3 generate heat, and the electrolyte in the positive electrode storage tank 5 enters the heating channel 13 through the positive electrode infusion pipe 51 and the liquid inlet 11, and the electrolyte flows along multiple straight segments 131 and multiple connecting segments 132, so that the electrolyte exchanges heat with multiple electric heating elements 3 and heats up, and the electrolyte enters the battery stack 7 for reaction after passing through the heating channel 13, and the electrolyte after the reaction returns to the positive electrode storage tank 5 through the positive electrode return pipe 52; the electrolyte in the negative electrode storage tank 6 enters the heating channel 13 through the negative electrode infusion pipe 61 and the liquid inlet 11, and the electrolyte flows along multiple straight segments 131 and multiple connecting segments 132, so that the electrolyte exchanges heat with multiple electric heating elements 3 and heats up, and the electrolyte enters the battery stack 7 for reaction after passing through the heating channel 13, and the electrolyte after the reaction returns to the negative electrode storage tank 6 through the negative electrode return pipe 62.

[0067] The user observes the display screen 21 on the controller 2 to determine the temperature of the electrolyte at the liquid inlet 11 and the temperature of the electrolyte at the liquid outlet 12 in the heating channel 13. The user uses the control button 22 to adjust the power-on time and power-on current of the electric heating element 3 to control the temperature of the electric heating element 3 so that the electrolyte in the heating channel 13 can react normally after entering the battery stack 7.

[0068] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0069] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flow battery heating device, characterized in that: It comprises a main body (1), a controller (2) and an electric heating element (3); A heating channel (13) is formed inside the main body (1), and the heating channel (13) is provided with a liquid inlet (11) and a liquid outlet (12) on the main body (1), the liquid inlet (11) is used to communicate with the positive electrode liquid storage tank (5) or the negative electrode liquid storage tank (6) of the liquid flow battery, and the liquid outlet (12) is used to communicate with the battery stack (7) of the liquid flow battery, and the liquid inlet (11) is used to allow electrolyte to enter the heating channel (13), and the liquid outlet (12) is used to allow the electrolyte in the heating channel (13) to be discharged from the heating channel (13); The electric heating element (3) is arranged in the heating channel (13), and the controller (2) is arranged on the main body (1) and is electrically connected to the electric heating element (3).

2. The flow battery heating device according to claim 1, characterized in that: The heating channel (13) comprises at least two straight segments (131) and at least one connecting segment (132); the plurality of straight segments (131) extend along a first direction, and the plurality of straight segments (131) are arranged at intervals along a second direction; each two adjacent straight segments (131) are connected and communicated with each other via a connecting segment (132); two straight segments (131) located at two ends of the plurality of straight segments (131) respectively form the liquid inlet (11) and the liquid outlet (12) on the main body (1); and the electric heating element (3) is arranged in the straight segment (131); the first direction is perpendicular to the second direction.

3. The flow battery heating device according to claim 2, characterized in that: There are a plurality of electric heating elements (3), and the plurality of electric heating elements (3) are arranged in a one-to-one correspondence in the plurality of straight line segments (131).

4. The flow battery heating device according to claim 2, characterized in that: The electric heating element (3) extends along the extension direction of the straight line segment (131).

5. The flow battery heating device according to any one of claims 1 to 4, characterized in that: The liquid inlet (11) and the liquid outlet (12) are respectively formed on two opposite sides of the main body (1).

6. The flow battery heating device according to any one of claims 1 to 4, characterized in that: The liquid inlet (11) and the liquid outlet (12) are formed on one side of the main body (1).

7. The flow battery heating device according to any one of claims 1 to 4, characterized in that: A first temperature detector (41) and a second temperature detector (42) are provided in the heating channel (13); the first temperature detector (41) is arranged at the liquid inlet (11), and the second temperature detector (42) is arranged at the liquid outlet (12); The first temperature detector (41) and the second temperature detector (42) are electrically connected to the controller (2) so that the detection results of the first temperature detector (41) and the second temperature detector (42) are transmitted to the controller (2).

8. The flow battery heating device according to claim 7, characterized in that: The controller (2) is provided with a display screen (21) electrically connected to the controller (2), and the display screen (21) displays the detection results of the first temperature detector (41) and the second temperature detector (42).

9. The flow battery heating device according to any one of claims 1 to 4, characterized in that: The controller (2) is provided with a control button (22), and the control button (22) is used to output a control signal to the controller (2) so that the controller (2) controls the operation of the electric heating element (3).

10. The flow battery heating device according to any one of claims 1 to 4, characterized in that: The electric heating element (3) comprises an isolating element and a heating resistance wire, wherein the heating resistance wire is arranged on the inner wall of the heating channel (13), and the isolating element is sleeved on the outer side of the heating resistance wire and connected to the inner wall of the heating channel (13) to isolate the heating resistance wire from the electrolyte.

11. A liquid flow battery, characterized in that: It comprises a battery stack (7), a positive electrode liquid storage tank (5), a negative electrode liquid storage tank (6) and two liquid flow battery heating devices according to any one of claims 1 to 9; The liquid inlet (11) of the main body (1) is in communication with the positive electrode liquid storage tank (5), and the liquid outlet (12) is in communication with the battery stack (7), so that the liquid in the positive electrode liquid storage tank (5) enters the battery stack (7) through the heating channel (13); The liquid inlet (11) of the other main body (1) is in communication with the negative electrode liquid storage tank (6), and the liquid outlet (12) is in communication with the battery stack (7), so that the liquid in the negative electrode liquid storage tank (6) enters the battery stack (7) through the heating channel (13).

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