Bipolar plate runner with double-helix structure for flow battery
By designing a flow channel with a double-helix structure for the bipolar plate of a flow battery, and utilizing a combination of heat-conducting blocks and heat sinks, the high-temperature heat dissipation problem of the bipolar plate in the flow battery was solved, achieving efficient heat dissipation and improving the performance and lifespan of the fuel cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUISHENG FLOW BATTERY TECHNOLOGY (QINGDAO) CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
When the bipolar plates of a flow battery are in use, they cannot dissipate heat in time due to high temperatures, which leads to reduced electrical and thermal conductivity, increased internal resistance, reduced output power and efficiency of the fuel cell, and shortened lifespan.
A flow battery bipolar plate flow channel with a double helix structure is designed. The structure combines heat-conducting blocks and heat sinks with heat sinks. The connection columns with threads and rubber gaskets enhance fixation and stability, achieving efficient heat dissipation.
This improves heat dissipation efficiency, avoids the impact of high temperatures on the bipolar plates, ensures the conductivity and thermal conductivity of the bipolar plates, extends the lifespan of the fuel cell, and enhances output power and efficiency.
Smart Images
Figure CN224123351U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of bipolar plate flow channel for flow batteries, specifically a bipolar plate flow channel for flow batteries with a double helix structure. Background Technology
[0002] Flow batteries, as large-scale energy storage devices, have attracted increasing attention due to their long lifespan, fast response, low pollution, high efficiency, recyclability, and independent system output power and storage capacity. A flow battery consists of end plates, bipolar plates, porous electrodes, and a proton exchange membrane. The bipolar plates, as key components, not only function as series batteries but also control the electrolyte flow. The flow channel structure directly affects the uniformity of electrolyte distribution and the flow mass transfer capability. Good flow mass transfer capability can reduce flow losses, lower pumping power and concentration polarization within the battery, and improve the battery system efficiency.
[0003] Bipolar plates generate high internal temperatures during use. If heat cannot be dissipated in time, the high temperature will reduce the conductivity and thermal conductivity of the bipolar plates, increase internal resistance, thereby reducing the output power and efficiency of the fuel cell and shortening its lifespan. Summary of the Invention
[0004] The purpose of this invention is to provide a flow channel for a flow battery with a double helix structure, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A flow channel for a flow battery with a double-helix structure is provided, comprising a bipolar plate, a connecting groove formed on the side surface of the bipolar plate, a first connecting hole formed inside the bipolar plate, a first connecting post and a second connecting post movably connected inside the first connecting hole, and the first connecting post and the second connecting post being threadedly connected, a heat-conducting block inserted inside the connecting groove, a second connecting hole formed inside the heat-conducting block, and both the first and second connecting posts located inside the second connecting hole, a heat sink fixedly connected to the end of the heat-conducting block away from the bipolar plate, and a heat sink fixedly connected to the outside of the heat sink, the bipolar plate having a first helical flow channel and a second helical flow channel, and the first helical flow channel and the second helical flow channel being interconnected.
[0006] Optionally, the number of heat sinks is multiple, and they are symmetrically distributed on the upper and lower sides of the heat sink frame.
[0007] Optionally, the top and bottom of the bipolar plate are respectively provided with a first mounting groove and a second mounting groove, and a first rubber gasket and a second rubber gasket are respectively installed inside the first mounting groove and the second mounting groove.
[0008] Optionally, both the first and second connecting posts have circular holes inside, and the circular holes have cross-shaped slots inside.
[0009] Optionally, the connecting groove is provided with two sets of first connecting holes, and the two sets of first connecting holes are symmetrically distributed.
[0010] Optionally, the number of the second connecting holes is two, and they correspond to the positions of the two sets of first connecting holes.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This utility model is provided with a first connecting post, a second connecting post, a heat-conducting block, a heat sink frame, and a heat sink. In use, the heat-conducting block is inserted into the connecting groove using the heat sink frame, and then the first connecting post and the second connecting post are connected to fix the heat sink frame. The heat inside the bipolar plate is transferred to the heat sink frame through the heat-conducting block and then dissipated through the heat sink, which improves the heat dissipation efficiency and avoids the high temperature from affecting the bipolar plate.
[0013] 2. This utility model is provided with a first rubber gasket and a second rubber gasket. When the first connecting post and the second connecting post are connected by threads, the first rubber gasket and the second rubber gasket are squeezed respectively, which can avoid damage to the bipolar plate. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;
[0018] Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.
[0019] In the diagram: 1. Bipolar plate; 2. Heat-conducting block; 3. Second connecting hole; 4. Heat sink; 5. Heat sink fin; 6. Connecting groove; 7. First connecting hole; 8. First mounting groove; 9. Second mounting groove; 10. First rubber gasket; 11. Second rubber gasket; 12. First connecting post; 13. Second connecting post; 14. Cross slot; 15. First spiral flow channel; 16. Second spiral flow channel. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] Reference Figure 1-4 A flow battery bipolar plate channel with a double helix structure includes a bipolar plate 1. A connecting groove 6 is formed on the side surface of the bipolar plate 1. A first connecting hole 7 is formed inside the bipolar plate 1. A first connecting post 12 and a second connecting post 13 are movably connected inside the first connecting hole 7, and the first connecting post 12 and the second connecting post 13 are threadedly connected. A heat-conducting block 2 is inserted into the connecting groove 6. A second connecting hole 3 is formed inside the heat-conducting block 2, and the first connecting post 12 and the second connecting post 13 are both located inside the second connecting hole 3. A heat sink 4 is fixedly connected to the end of the heat-conducting block 2 away from the bipolar plate 1, and a heat sink 5 is fixedly connected to the outside of the heat sink 4. A first helical flow channel 15 and a second helical flow channel 16 are formed inside the bipolar plate 1, and the first helical flow channel 15 and the second helical flow channel 16 are connected. In use, the heat-conducting block 2 is inserted into the connecting groove 6 using the heat sink 4, and then the first connecting post 12 and the second connecting post 13 are connected to fix the heat sink 4. The heat inside the bipolar plate 1 is transferred to the heat sink 4 through the heat-conducting block 2 and dissipated through the heat sink 5, which improves the heat dissipation efficiency and avoids the high temperature from affecting the bipolar plate 1. The positive and negative electrode liquid inlets are located on the top two sides of the bipolar plate 1, respectively, and are symmetrically distributed. The first spiral flow channel 15 and the second spiral flow channel 16 can make the electrolyte evenly distributed when flowing through the bipolar plate 1, avoiding local concentrations that are too high or too low.
[0022] There are multiple heat sinks 5, which are symmetrically distributed on the upper and lower sides of the heat sink 4. The multiple heat sinks 5 increase the contact area with the outside environment, thereby improving the heat dissipation effect.
[0023] The bipolar plate 1 has a first mounting groove 8 and a second mounting groove 9 at its top and bottom, respectively, and a first rubber gasket 10 and a second rubber gasket 11 are installed inside the first mounting groove 8 and the second mounting groove 9, respectively. When the first connecting post 12 and the second connecting post 13 are threaded together, the first rubber gasket 10 and the second rubber gasket 11 are squeezed, which can prevent damage to the bipolar plate 1.
[0024] Both the first connecting post 12 and the second connecting post 13 have circular holes inside, and the circular holes have cross-shaped slots 14 inside. The circular holes facilitate the insertion of screws for fixing the bipolar plate 1, and the cross-shaped slots 14 facilitate the connection between the first connecting post 12 and the second connecting post 13.
[0025] The connecting groove 6 has two sets of first connecting holes 7 inside, and the two sets of first connecting holes 7 are symmetrically distributed. By setting two sets of first connecting holes 7, it is convenient to connect to the two sets of first connecting posts 12 and second connecting posts 13 from two positions, thereby enhancing the stability of the connection of the heat-conducting block 2.
[0026] There are two second connecting holes 3, which correspond to the positions of the two sets of first connecting holes 7. The correspondence between the two second connecting holes 3 and the two first connecting holes 7 facilitates the installation of the first connecting post 12 and the second connecting post 13.
[0027] Working principle: In use, the heat-conducting block 2 is inserted into the connecting slot 6 using the heat sink 4, and then the first connecting post 12 and the second connecting post 13 are connected to fix the heat sink 4. The heat inside the bipolar plate 1 is transferred to the heat sink 4 through the heat-conducting block 2 and dissipated through the heat sink 5, which improves the heat dissipation efficiency and avoids the high temperature from affecting the bipolar plate 1. When the first connecting post 12 and the second connecting post 13 are connected by threads, the first rubber gasket 10 and the second rubber gasket 11 are squeezed respectively, which can prevent the bipolar plate 1 from being damaged.
[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flow cell bipolar plate channel with a double helix structure, comprising a bipolar plate (1), characterized in that: The bipolar plate (1) has a connecting groove (6) on its side surface. The bipolar plate (1) has a first connecting hole (7) inside. The first connecting hole (7) is movably connected to a first connecting post (12) and a second connecting post (13), and the first connecting post (12) and the second connecting post (13) are threaded together. A heat-conducting block (2) is inserted into the connecting groove (6). The heat-conducting block (2) has a second connecting hole (3) inside. The first connecting post (12) and the second connecting post (13) are both located inside the second connecting hole (3). A heat sink (4) is fixedly connected to one end of the heat-conducting block (2) away from the bipolar plate (1), and a heat sink (5) is fixedly connected to the outside of the heat sink (4). The bipolar plate (1) has a first spiral flow channel (15) and a second spiral flow channel (16) inside. The first spiral flow channel (15) and the second spiral flow channel (16) are connected together.
2. The flow channel of a flow battery with a double helix structure as described in claim 1, characterized in that: The number of heat sinks (5) is multiple, and they are symmetrically distributed on the upper and lower sides of the heat sink frame (4).
3. The flow channel of a flow battery with a double helix structure as described in claim 1, characterized in that: The bipolar plate (1) has a first mounting groove (8) and a second mounting groove (9) at its top and bottom, respectively, and a first rubber gasket (10) and a second rubber gasket (11) are installed inside the first mounting groove (8) and the second mounting groove (9), respectively.
4. The flow channel of a flow battery with a double helix structure as described in claim 1, characterized in that: Both the first connecting post (12) and the second connecting post (13) have circular holes inside, and the circular holes have cross-shaped slots (14) inside.
5. The flow channel of a flow battery with a double helix structure as described in claim 1, characterized in that: The connecting groove (6) is provided with two sets of first connecting holes (7), and the two sets of first connecting holes (7) are symmetrically distributed.
6. The flow channel of a flow battery with a double helix structure as described in claim 5, characterized in that: The number of the second connecting holes (3) is two, and they correspond to the positions of the two sets of first connecting holes (7).