Electrolytic cell and electrolysis bath
Patent Information
- Application Number
- CN202522399035.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-11-12
AI Technical Summary
[0004]但是由于极框、阴极扩散层和交换膜存在制造和装配误差，使得在装配或运行过程中交换膜与极框和例如阴极扩散层之间存在高度差和孔隙，较为脆弱的交换膜容易由于应力集中导致边缘撕裂，引起交换膜两侧的气体或电解液从极框的安装沉台与交换膜的连接处泄漏，进而影响电解小室的结构密封性和安全性
由于极框具有沿第一方向排列并共同贯穿所述极框的第一安装孔和第二安装孔，双极板的第一阴极层内嵌于第一安装孔，阴极扩散层、第一密封圈、交换膜和阳极扩散层均内嵌于第二安装孔内，而第一方向与双极板、所述阴极扩散层和所述交换膜的排列方向平行，简言之，双极板、阴极扩散层、交换膜和阳极扩散层层叠安装于极框的两个安装孔内，从而不仅可将电解小室的厚度减薄，相应地减少电解小室的外部体积，以及有助于第一密封圈、阴极扩散层和阳极扩散层的定位装配作业，而且相对现有技术中批量生产时每个电解小室原本需要两套极框注塑模具而言，可减少用于制造极框的注塑模具数量，降低了电解小室的成本。
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Figure CN224812651U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrolytic cells, and more specifically, to an electrolytic chamber and an electrolytic cell. Background Technology
[0002] An electrolytic cell mainly consists of multiple electrolytic chambers and fasteners. The multiple electrolytic chambers are stacked and fixedly connected by fasteners. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the anode-solution interface, and a reduction reaction occurs at the cathode-solution interface to produce the desired product.
[0003] In the relevant technology, each electrolysis chamber mainly includes an electrode frame, a cathode diffusion layer, an exchange membrane, an anode diffusion layer, and two electrode plates. The two electrode plates are respectively attached to opposite sides of the electrode frame. The cathode diffusion layer is disposed in the inner ring of the electrode frame, and the exchange membrane is disposed on the mounting platform of the electrode frame. The opposite sides of the cathode diffusion layer are respectively attached to one electrode plate and the first cathode layer of the exchange membrane, and the opposite sides of the anode diffusion layer are respectively attached to the first anode layer of the exchange membrane and the other electrode plate.
[0004] However, due to manufacturing and assembly errors in the electrode frame, cathode diffusion layer, and exchange membrane, there are height differences and pores between the exchange membrane and the electrode frame and, for example, the cathode diffusion layer, during assembly or operation. The relatively fragile exchange membrane is prone to edge tearing due to stress concentration, causing gas or electrolyte on both sides of the exchange membrane to leak from the connection between the electrode frame mounting platform and the exchange membrane, thereby affecting the structural sealing and safety of the electrolysis chamber. Utility Model Content
[0005] The problem this invention addresses is how to ensure the sealing and safety of the electrolysis chamber.
[0006] To solve the above problems, this utility model provides an electrolysis chamber and an electrolysis cell.
[0007] In a first aspect, this utility model provides an electrolysis chamber, comprising: The pole frame has a first mounting hole and a second mounting hole arranged along a first direction and passing through the pole frame together. The size of the second mounting hole is larger than the size of the first mounting hole. The wall of the first mounting hole and the wall of the second mounting hole are connected by a support surface. A bipolar plate having a first cathode layer embedded in the first mounting hole; A cathode diffusion layer, wherein the cathode diffusion layer is bonded to the first cathode layer of the bipolar plate; The first sealing ring is sleeved on the cathode diffusion layer and embedded in the second mounting hole, and the end face of the first sealing ring is in contact with the support surface; An exchange membrane is embedded in the second mounting hole and is attached to the first sealing ring and the cathode diffusion layer; An anode diffusion layer is located within the second mounting hole and is attached to one end face of the exchange membrane opposite to the cathode diffusion layer; wherein, the first direction is parallel to the arrangement direction of the bipolar plate, the cathode diffusion layer, and the exchange membrane.
[0008] Optionally, the bipolar plate further has a first anode layer disposed opposite to the first cathode layer, the first anode layer of the bipolar plate being bonded to the anode diffusion layer of an adjacent electrolytic cell, and the first anode layer of the adjacent electrolytic cell being inserted into a second mounting hole of one of the electrolytic cells.
[0009] Optionally, the end face of the cathode diffusion layer opposite to the first cathode layer is flush with the end face of the first sealing ring opposite to the support surface.
[0010] Optionally, the electrolysis chamber further includes an anode pressure ring, which is attached to the side of the anode diffusion layer away from the exchange membrane, and the anode pressure ring is located between the outer peripheral edge of the anode diffusion layer and the inner sidewall of the second mounting hole.
[0011] Optionally, the anode pressure ring of one of the electrolysis chambers is sleeved on the first anode layer of the adjacent electrolysis chamber.
[0012] Optionally, the electrode frame has a second anode layer and a second cathode layer connected sequentially along a first direction, and the second anode layer has a second anode medium inlet, a first bridge channel, a first opening, a second bridge channel and a second anode medium outlet connected sequentially. The second cathode layer has a third bridge channel, a second cathode dielectric outlet, and a second opening. The second opening and the first opening together form the first mounting hole and the second mounting hole. The second opening is connected to the second cathode dielectric outlet through the third bridge channel.
[0013] Optionally, the electrolysis chamber further includes a first sealing assembly, which includes a first sealing element and a cathode medium sealing element. A first groove is provided on the outer periphery of the second anode layer, and the first sealing element is embedded in the first groove. A second groove is provided on the second anode layer at the edge of the second cathode medium outlet, and the cathode medium sealing element is embedded in the second groove. And / or, the electrolysis chamber further includes a second sealing assembly, the second sealing assembly including a second seal and an anode medium seal, a third groove is provided on the outer periphery of the second cathode layer, the second seal is embedded in the third groove; a fourth groove is provided on the second cathode layer at the edges of the second anode medium inlet and the second anode medium outlet, the anode medium seal is embedded in the fourth groove.
[0014] Optionally, the bipolar plate is formed by any one of etching, stamping and machining processes; And / or, the bipolar plate is made of any one of titanium, stainless steel, nickel and carbon steel.
[0015] Optionally, both the cathode diffusion layer and the anode diffusion layer are made of any one of titanium felt, carbon paper, nickel felt, nickel foam, or stainless steel felt.
[0016] Secondly, this utility model provides an electrolytic cell, including a plurality of electrolytic chambers as described above, and also including two pressure plates and a plurality of fasteners. The plurality of electrolytic chambers are arranged along a first direction, and the pressure plates are respectively provided at both ends of the arrangement direction. The plurality of fasteners are distributed around the plurality of electrolytic chambers, and the fasteners pass through the edges of the two pressure plates for pressing the plurality of electrolytic chambers.
[0017] The beneficial effects of the electrolysis chamber and electrolysis cell of this utility model are: Because the electrode frame has a first mounting hole and a second mounting hole arranged along a first direction and passing through the electrode frame together, the first cathode layer of the bipolar plate is embedded in the first mounting hole, and the cathode diffusion layer, the first sealing ring, the exchange membrane, and the anode diffusion layer are all embedded in the second mounting hole. The first direction is parallel to the arrangement direction of the bipolar plate, the cathode diffusion layer, and the exchange membrane. In short, the bipolar plate, the cathode diffusion layer, the exchange membrane, and the anode diffusion layer are stacked and installed in the two mounting holes of the electrode frame. This not only reduces the thickness of the electrolysis chamber and correspondingly reduces the external volume of the electrolysis chamber, but also facilitates the positioning and assembly of the first sealing ring, the cathode diffusion layer, and the anode diffusion layer. Moreover, compared to the prior art where each electrolysis chamber originally required two sets of electrode frame injection molds for mass production, this reduces the number of injection molds used to manufacture the electrode frame and lowers the cost of the electrolysis chamber.
[0018] Since the first sealing ring is embedded in the second mounting hole and fits against the support surface, the exchange membrane is in contact with the first sealing ring and the cathode diffusion layer. Thus, the cathode diffusion layer and the first sealing ring set on the support surface can provide structural support for the exchange membrane, ensuring that the exchange membrane remains flat during assembly and avoiding wrinkles or displacement that could lead to performance degradation of the exchange membrane.
[0019] The "stepped surface" structure formed by the first mounting hole, support surface, and second mounting hole of the electrode frame allows the first sealing ring, located on the support surface, to be fitted onto the cathode diffusion layer. The exchange membrane adheres to both the first sealing ring and the cathode diffusion layer. This ensures that during the assembly or operation of the various components of the electrolysis chamber, the exchange membrane compresses the first sealing ring to varying degrees at the connection between the first sealing ring and the electrode frame. In conjunction with the cathode sealing layer, which supports the area within the edge of the exchange membrane, the first sealing ring can disperse and absorb the thermal cycling stress during assembly and operation. This not only prevents stress concentration and damage to the exchange membrane but also improves the sealing reliability between the exchange membrane and the electrode frame. This prevents gas or electrolyte leakage from both sides of the exchange membrane at the connection between the electrode frame and the first sealing ring, ensuring the structural airtightness and safety of the electrolysis chamber. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the electrolysis chamber in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure along the DD section line; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the pole frame structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the electrolysis chamber in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the second anode layer of the electrode frame in an embodiment of this utility model; Figure 7 This is a schematic diagram of the structure of the second cathode layer of the electrode frame in an embodiment of this utility model; Figure 8 This is a schematic diagram of the structure of the first cathode layer of the bipolar plate in an embodiment of this utility model; Figure 9 This is a schematic diagram of the structure of the first anode layer of the bipolar plate in an embodiment of this utility model; Figure 10 This is a schematic diagram of the structure of the first sealing component in an embodiment of this utility model; Figure 11 This is a schematic diagram of the structure of the second sealing component in an embodiment of this utility model; Figure 12 This is a schematic diagram of the electrolytic cell in an embodiment of this utility model.
[0021] Explanation of reference numerals in the attached figures: 100 - Electrolysis chamber; 110 - Electrode frame; 111 - Second cathode layer; 1111 - Third bridging channel; 1112 - Second cathode dielectric outlet; 1113 - Third groove; 1114 - Fourth groove; 1115 - Second opening; 112 - Second anode layer; 1121 - Second anode dielectric inlet; 1122 - First bridging channel; 1123 - Electrode frame reaction zone; 1124 - Second bridging channel; 1125 - Second anode dielectric outlet; 1126 - First groove; 1127 - Second groove; 1100 - First mounting hole; 1101 - Second mounting hole; 1102 - Support surface; 120 - Bipolar plate; 1200 - First anode medium inlet; 1201 - First anode medium outlet; 1202 - First cathode medium outlet; 1203 - Anode reaction zone; 1204 - Cathode reaction zone; 121 - First cathode layer; 122 - First anode layer; 130 - Cathode diffusion layer; 140 - First sealing ring; 150 - Exchange membrane; 160 - Anode diffusion layer; 170 - Anode pressure ring; 180 - First sealing assembly; 181 - First seal; 182 - Cathode medium seal; 190 - Second sealing assembly; 191 - Second seal; 192 - Anode medium seal; 200 - Pressure plate; 300 - Fastener. Detailed Implementation
[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.
[0023] In the attached diagram, the X-axis represents the left-right position, with the positive direction of the X-axis representing the right side and the negative direction representing the left side; the Z-axis represents the up-down position, with the positive direction of the Z-axis representing the up and the negative direction representing the down. It should be noted that the aforementioned representations of the X and Z axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0025] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0026] To address the problems existing in the aforementioned related technologies, this utility model provides an electrolysis chamber and an electrolysis cell.
[0027] like Figures 1 to 4 As shown, an embodiment of this utility model provides an electrolysis chamber, comprising: The pole frame 110 has a first mounting hole 1100 and a second mounting hole 1101 arranged along a first direction and passing through the pole frame 110. The size of the second mounting hole 1101 is larger than the size of the first mounting hole 1100. The hole wall of the first mounting hole 1100 and the hole wall of the second mounting hole 1101 are connected by a support surface 1102. Bipolar plate 120, the bipolar plate 120 having a first cathode layer 121, the first cathode layer 121 being embedded in the first mounting hole 1100; A cathode diffusion layer 130 is attached to the first cathode layer 121 of the bipolar plate 120; The first sealing ring 140 is sleeved on the cathode diffusion layer 130 and embedded in the second mounting hole 1101, and the end face of the first sealing ring 140 is in contact with the support surface 1102. The exchange membrane 150 is embedded in the second mounting hole 1101 and is in contact with the first sealing ring 140 and the cathode diffusion layer 130. An anode diffusion layer 160 is located within the second mounting hole 1101 and is attached to one end face of the exchange membrane 150 away from the cathode diffusion layer 130; wherein, the first direction is parallel to the arrangement direction of the bipolar plate 120, the cathode diffusion layer 130 and the exchange membrane 150.
[0028] Specifically, the first direction can be related to Figure 2 and Figure 3 The Z-axis is parallel in the coordinate system; the first direction can refer to the arrangement direction of the bipolar plate 120 and the cathode diffusion layer 130, or it can refer to the arrangement direction of adjacent electrolytic cells 100.
[0029] The first mounting hole 1100 and the second mounting hole 1101 are along Figure 4 The coordinate system is arranged along the Z-axis and is connected.
[0030] The support surface 1102 can serve as the connection point between the wall of the first mounting hole 1100 and the wall of the second mounting hole 1101.
[0031] The outer diameter of the first sealing ring 140 may be slightly smaller than the second mounting hole 1101 so that the first sealing ring 140 can be smoothly embedded in the second mounting hole 1101; the inner diameter of the first sealing ring 140 may be slightly larger than the cathode diffusion layer 130 so that the first sealing ring 140 can be smoothly fitted onto the cathode diffusion layer 130.
[0032] The anode diffusion layer 160 and the cathode diffusion layer 130 can be located on opposite sides of the exchange membrane 150 and are respectively attached to opposite surfaces of the exchange membrane 150.
[0033] The exchange membrane 150 can be a proton exchange membrane or anion exchange membrane.
[0034] In this embodiment, since the electrode frame 110 has a first mounting hole 1100 and a second mounting hole 1101 arranged along a first direction, the first cathode layer 121 of the bipolar plate 120 is embedded in the first mounting hole 1100, and the cathode diffusion layer 130, the first sealing ring 140, the exchange membrane 150, and the anode diffusion layer 160 are all embedded in the second mounting hole 1101. The first direction is parallel to the arrangement direction of the bipolar plate 120, the cathode diffusion layer 130, and the exchange membrane 150. In short, the bipolar plate 120, the cathode diffusion layer 130, the exchange membrane 150, and the anode diffusion layer 160 are all arranged in the first mounting hole 1100. The membrane 150 and the anode diffusion layer 160 are stacked and installed in the two mounting holes of the electrode frame 110. This not only reduces the thickness of the electrolysis chamber 100 and correspondingly reduces the external volume of the electrolysis chamber 100, but also facilitates the positioning and assembly of the first sealing ring 140, the cathode diffusion layer 130 and the anode diffusion layer 160. Moreover, compared with the prior art, which originally required two sets of electrode frame 110 injection molds for each electrolysis chamber 100 in mass production, the number of injection molds used to manufacture the electrode frame 110 can be reduced, thus reducing the cost of the electrolysis chamber 100.
[0035] Since the first sealing ring 140 is embedded in the second mounting hole 1101 and fits against the support surface 1102, the exchange membrane 150 fits against the first sealing ring 140 and the cathode diffusion layer 130. Thus, the cathode diffusion layer 130 and the first sealing ring 140 provided on the support surface 1102 can provide structural support for the exchange membrane 150, ensuring that the exchange membrane 150 remains flat during assembly and avoiding wrinkles or displacement that could lead to performance degradation of the exchange membrane 150.
[0036] The "stepped surface" structure formed by the first mounting hole 1100, the support surface 1102, and the second mounting hole 1101 of the electrode frame 110 allows the first sealing ring 140, which is set on the support surface 1102, to be fitted onto the cathode diffusion layer 130. The exchange membrane 150 is in contact with the first sealing ring 140 and the cathode diffusion layer 130. This allows the exchange membrane 150 to compress the first sealing ring 140 to varying degrees at the connection between the first sealing ring 140 and the electrode frame 110 during the assembly or operation of the various components of the electrolysis chamber 100. In conjunction with the cathode sealing layer that supports the area within the edge of the exchange membrane 150, the first sealing ring 140 can disperse and absorb the thermal cycling stress during assembly and operation. This not only prevents the exchange membrane 150 from being damaged due to stress concentration, but also improves the sealing reliability between the exchange membrane 150 and the electrode frame 110, preventing gas or electrolyte on both sides of the exchange membrane 150 from leaking from the connection between the electrode frame 110 and the first sealing ring 140, thus ensuring the structural sealing and safety of the electrolysis chamber 100.
[0037] Optionally, combined Figure 3 and Figure 4 As shown, the bipolar plate 120 also has a first anode layer 122 disposed opposite to the first cathode layer 121. The first anode layer 122 of the bipolar plate 120 is attached to the anode diffusion layer 160 of the adjacent electrolytic cell 100. The first anode layer 122 of the adjacent electrolytic cell 100 is inserted into the second mounting hole 1101 of the electrolytic cell 100.
[0038] Specifically, the first anode layer 122 and the first cathode layer 121 can serve as two opposing surfaces of the bipolar plate 120.
[0039] The sum of the thicknesses of the first sealing ring 140, the exchange membrane 150, and the anode diffusion layer 160 is less than the depth of the second mounting hole 1101 of the electrode frame 110. Therefore, the first anode layer 122 of the bipolar plate 120 of an electrolysis chamber 100 can be located in the second mounting hole 1101 of an adjacent electrolysis chamber 100.
[0040] Combination Figure 12As shown, the bipolar plate 120, cathode diffusion layer 130, exchange membrane 150, and anode diffusion layer 160 in a single electrolysis chamber 100 are arranged in a direction that is parallel to the first direction.
[0041] The electrolytic cell includes multiple electrolytic chambers 100, and the arrangement direction of the multiple electrolytic chambers 100 can be defined as the thickness of the electrolytic cell.
[0042] In this optional embodiment, the first anode layer 122 of the bipolar plate 120 of one electrolytic cell 100 is bonded to the anode diffusion layer 160 of the adjacent electrolytic cell 100. In other words, the adjacent electrolytic cells 100 are also stacked along the first direction, thereby further reducing the thickness of the entire electrolytic cell.
[0043] Optionally, combined Figure 3 As shown, the end face of the cathode diffusion layer 130 facing away from the first cathode layer 121 is flush with the end face of the first sealing ring 140 facing away from the support surface 1102.
[0044] Specifically, the first sealing ring 140 can be a planar sealing ring structure.
[0045] In this optional embodiment, since the end face of the cathode diffusion layer 130 facing away from the first cathode layer 121 is flush with the end face of the first sealing ring 140 facing away from the support surface 1102, in other words, the end faces of the cathode diffusion layer 130 and the first sealing ring 140 facing away from the bipolar plate 120 are almost on the same plane, when the exchange membrane 150 is installed on the cathode diffusion layer 130, the outer edge of the exchange membrane 150 is in contact with the first sealing ring 140, and the area inside the outer edge of the exchange membrane 150 is in contact with the cathode diffusion layer 130. This ensures that the exchange membrane 150 is in a flat state during assembly, further reducing the risk of emergency concentration of the exchange membrane 150 and ensuring the safety of the exchange membrane 150.
[0046] Optionally, combined Figure 3 and Figure 5 As shown, the electrolysis chamber 100 also includes an anode pressure ring 170, which is attached to the side of the anode diffusion layer 160 away from the exchange membrane 150. The anode pressure ring 170 is located between the outer peripheral edge of the anode diffusion layer 160 and the inner sidewall of the second mounting hole 1101.
[0047] Specifically, the anode pressure ring 170 can be a flat sealing ring.
[0048] In this optional embodiment, the first sealing ring 140 is attached to the support surface 1102 and is located on the side of the exchange membrane 150 near the cathode diffusion layer 130. This enhances the sealing effect between the side of the exchange membrane 150 near the cathode diffusion layer 130 and the electrode frame 110. The anode pressure ring 170 is attached to the end face of the exchange membrane 150 near the anode diffusion layer 160 and is located on the side of the exchange membrane 150 near the anode diffusion layer 160. This enhances the sealing effect between the side of the exchange membrane 150 near the anode diffusion layer 160 and the electrode frame 110. In other words, the dual sealing effect of the first sealing ring 140 and the anode pressure ring 170 effectively prevents the exchange membrane 150 near the cathode diffusion layer 130 (cathode-side reaction gas, such as oxygen / air) and near the anode diffusion layer 160 (anode-side reaction gas, such as hydrogen) from communicating with each other. It also prevents both from mixing with the electrolyte or other media, thereby ensuring the safe and reliable operation of the electrolysis chamber 100.
[0049] Optionally, combined Figure 5 As shown, the anode pressure ring 170 of one electrolysis chamber 100 is sleeved on the first anode layer 122 of the adjacent electrolysis chamber 100.
[0050] Specifically, if the electrolysis chamber 100 is rectangular in shape, then the anode pressure ring 170 along... Figure 3 The dimension along the X-axis in the coordinate system can be the length of the anode pressure ring 170, which can be a rectangular ring structure. The first anode layer 122 is along... Figure 3 The dimension in the X-axis direction of the coordinate system can be the length of the first anode layer 122, and the length of the inner edge of the anode pressure ring 170 can be greater than the length of the first anode layer 122, so that the anode pressure ring 170 can be smoothly fitted onto the first anode layer 122 of the other electrolysis chamber 100.
[0051] In this optional embodiment, during the assembly of multiple electrolytic cells 100, the anode pressure ring 170, bipolar plate 120, and first anode layer 122 in each electrolytic cell 100 are located at opposite ends of the electrolytic cell 100. The anode pressure ring 170 of one electrolytic cell 100 is sleeved on the first anode layer 122 of another adjacent electrolytic cell 100. In addition to increasing the sealing effect between the exchange membrane 150 and the electrode frame 110 on the side close to the anode diffusion layer 160, the anode pressure ring 170 can also play a positioning role in the assembly of two adjacent electrolytic cells 100, thereby improving the assembly stability of multiple electrolytic cells 100.
[0052] Optionally, combined Figure 6 and Figure 7As shown, the pole frame 110 has a second anode layer 112 and a second cathode layer 111 connected in sequence along a first direction. The second anode layer 112 has a second anode medium inlet 1121, a first bridge flow channel 1122, a first opening 1123, a second bridge flow channel 1124 and a second anode medium outlet 1125 connected in sequence. The second cathode layer 111 has a third bridge flow channel 1111, a second cathode medium outlet 1112, and a second opening 1115. The second opening 1115 and the first opening 1123 together form the first mounting hole 1100 and the second mounting hole 1101. The second opening 1115 is connected to the second cathode medium outlet 1112 through the third bridge flow channel 1111.
[0053] Specifically, the second anode layer 112 and the second cathode layer 111 can be understood as two oppositely arranged sides of the electrode frame 110.
[0054] The second anode layer 112 and the second cathode layer 111 have different structures.
[0055] The second anode medium inlet 1121 and the second anode medium outlet 1125 can be understood as through-hole structures penetrating the pole frame 110; the first bridge flow channel 1122, the second bridge flow channel 1124, and the third bridge flow channel 1111 can be understood as channels formed by the gaps between multiple spaced protrusions.
[0056] The first bridge channel 1122 is used to connect the second anode medium inlet 1121 and the first opening 1123, the second bridge channel 1124 is used to connect the first opening 1123 and the second anode medium outlet 1125, and the third bridge channel 1111 is used to connect the second opening 1115 and the second cathode medium outlet 1112.
[0057] The electrode frame 110 has two second cathode dielectric outlets 1112.
[0058] Combination Figure 8 and Figure 9 As shown, the bipolar plate 120 has a first cathode layer 121 and a first anode layer 122, which can be understood as two oppositely arranged sides of the bipolar plate 120.
[0059] The first cathode layer 121 of the bipolar plate 120 is provided with a first anode medium inlet 1200, a first anode medium outlet 1201, an anode reaction region 1203, and two first cathode medium outlets 1202; wherein the first anode medium inlet 1200, the first anode medium outlet 1201, and the two first cathode medium outlets 1202 extend through the entire bipolar plate 120. The first anode layer 122 is provided with a cathode reaction region 1204.
[0060] The first anode medium inlet 1200 of the bipolar plate 120 is opposite to and connected to the second anode medium inlet 1121 of the second anode layer 112; the first anode medium outlet 1201 of the bipolar plate 120 is opposite to and connected to the second anode medium outlet 1125 of the second anode layer 112; and the first cathode medium outlet 1202 of the bipolar plate 120 is opposite to and connected to the second cathode medium outlet 1112 of the second cathode layer 111.
[0061] The anode reaction region 1203 includes a plurality of first convex strips spaced apart along a second direction, where the second direction refers to the length direction (or width direction) of the bipolar plate 120, and can be coupled with... Figure 2 The X-axis is parallel in the coordinate system. The cathode reaction region 1204 includes a plurality of second convex strips spaced apart along a third direction. The first convex strips are perpendicular to the second convex strips. The third direction refers to the width direction (or length direction) of the bipolar plate 120, which may be perpendicular to the second direction.
[0062] In this optional embodiment, the reaction medium enters the first opening 1123 from the second anode medium inlet 1121 through the first bridge flow channel 1122, and the anode medium and anode reaction products after the reaction enter the second anode medium outlet through the second bridge flow channel 1124; the cathode reaction products enter the second cathode medium outlet 1112 from the second opening 1115 through the third bridge flow channel 1111.
[0063] Optionally, combined Figure 5 , Figure 10 and Figure 11 As shown, the electrolysis chamber 100 also includes a first sealing assembly 180, which includes a first sealing element 181 and a cathode medium sealing element 182. The outer periphery of the second anode layer 112 is provided with a first groove 1126, and the first sealing element 181 is embedded in the first groove 1126. The second anode layer 112 is provided with a second groove 1127 at the edge of the second cathode medium outlet 1112, and the cathode medium sealing element 182 is embedded in the second groove 1127. And / or, the electrolysis chamber 100 further includes a second sealing assembly 190, which includes a second seal 191 and an anode medium seal 192. The outer periphery of the second cathode layer 111 is provided with a third groove 1113, and the second seal 191 is embedded in the third groove 1113. The second cathode layer 111 is provided with a fourth groove 1114 at the edges of the second anode medium inlet 1121 and the second anode medium outlet 1125, and the anode medium seal 192 is embedded in the fourth groove 1114.
[0064] Specifically, the first sealing component 180 may be disposed on the side of the second anode layer 112 of the electrode frame 110 away from the first anode layer 122 of the bipolar plate 120, and the second sealing component 190 may be disposed on the side of the second cathode layer 111 of the electrode frame 110 close to the first cathode layer 121 of the bipolar plate 120.
[0065] Both the first seal 181 and the cathode medium seal 182 are sealing ring structures, but the size of the first seal 181 is larger than the size of the cathode medium seal 182; the second groove 1127 is located on the periphery of the second cathode medium outlet 1112.
[0066] Both the second seal 191 and the anode medium seal 192 are sealing ring structures, but the size of the second seal 191 is larger than that of the anode medium seal 192, and the fourth groove 1114 is located on the periphery of the second anode medium outlet 1125.
[0067] In this optional embodiment, the first seal 181 and the second seal 191 are used to prevent leakage of the internal medium of the second anode layer 112 and the second cathode layer 111, respectively. The cathode medium seal 182 is embedded in the second groove 1127 on the outer periphery of the second cathode medium outlet 1112, and the anode medium seal 192 is embedded in the fourth groove 1114 on the outer periphery of the second anode medium outlet 1125, thereby isolating the anode medium from the cathode medium to prevent the mixing of the medium on both sides of the frame or the exchange membrane 150.
[0068] Optionally, the bipolar plate 120 is formed by any one of etching, stamping and machining processes; And / or, the bipolar plate 120 is made of any one of titanium, stainless steel, nickel and carbon steel.
[0069] Specifically, the bipolar plate 120 can be formed by means of etching, for example, by stamping, or by machining.
[0070] The first cathode layer 121 and the first anode layer 122 of the bipolar plate 120 may be coated or may not be coated.
[0071] Optionally, the cathode diffusion layer 130 and the anode diffusion layer 160 are both made of any one of titanium felt, carbon paper, nickel felt, nickel foam, or stainless steel felt.
[0072] Specifically, both the cathode diffusion layer 130 and the anode diffusion layer 160 can be plate-like structures made of any one of titanium felt, carbon paper, nickel felt, nickel foam, or stainless steel felt.
[0073] Titanium felt is a nonwoven material made from titanium fibers, possessing properties such as high temperature resistance, corrosion resistance, and high strength. Carbon paper is a paper-like composite material made using carbon fiber as reinforcement, natural or synthetic pulp as a matrix, and adding binders and fillers through a papermaking process. Nickel felt is a porous material made from nickel or stainless steel fibers, possessing high porosity, high specific surface area, and excellent filtration performance. Nickel foam belongs to the sponge metal category, characterized by high porosity, large specific surface area, and a three-dimensional network structure, and is classified as a foam metal along with copper foam and lead foam.
[0074] Stainless steel felt is a three-dimensional mesh porous filter material made from micron-sized stainless steel fibers through non-woven laying, lamination, pressing, and high-temperature sintering.
[0075] The electrolysis chamber 100 can be assembled as follows: the electrode frame 110 is placed on the workbench with the second cathode layer 111 facing upwards; the second sealing assembly 190 is placed in the second cathode layer 111 of the electrode frame 110; the first cathode layer 121 of the bipolar plate 120 is placed downwards in the first mounting hole 1100 of the electrode frame 110; the electrode frame 110 and the bipolar plate 120 are then flipped over; the first sealing assembly 180 is placed in the second anode layer 112 of the electrode frame 110; and the cathode diffusion layer 13 is then sequentially installed. 0. The first sealing ring 140, the exchange membrane 150, and the anode diffusion layer 160 are placed in the central area of the pole frame 110, wherein the first sealing ring 140, the exchange membrane 150, and the anode diffusion layer 160 are located in the second mounting hole 1101 of the pole frame 110. Finally, the anode pressure ring 170 is installed in the second mounting hole 1101, and the anode pressure ring 170 is located between the anode diffusion layer 160 and the inner sidewall of the second mounting hole 1101, thereby completing the assembly of a single cell.
[0076] Combination Figure 12 As shown in the figure, an electrolytic cell provided by this utility model includes a plurality of electrolytic chambers 100 as described in the above embodiment, as well as two pressure plates 200 and a plurality of fasteners 300. The plurality of electrolytic chambers 100 are arranged along a first direction, and the pressure plates 200 are respectively provided at both ends of the arrangement direction. The plurality of fasteners 300 are distributed around the electrolytic chambers 100, and the fasteners 300 pass through the edges of the two pressure plates 200 for pressing the plurality of electrolytic chambers 100.
[0077] Specifically, multiple electrolytic cells 100 are stacked along a first direction, and the second mounting hole 1101 of one of the electrolytic cells 100 is used to insert the first anode layer 122 of the adjacent electrolytic cell 100. Pressure plates 200 can be respectively provided at both ends of the multiple electrolytic cells 100 along the first direction. Multiple through holes can be provided on the outer edge of the pressure plate 200, and each through hole is used to insert fasteners 300. The multiple electrolytic cells 100 are fixed into an integral structure to form an electrolytic cell by the cooperation of the multiple fasteners 300 and the two pressure plates 200.
[0078] Fastener 300 can be a bolt fastener.
[0079] The electrolytic cell of this embodiment has the same beneficial effects over the prior art as the electrolytic cell 100 described above, and will not be repeated here.
[0080] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. An electrolysis chamber, characterized in that, include: The pole frame (110) has a first mounting hole (1100) and a second mounting hole (1101) arranged along a first direction and passing through the pole frame (110). The size of the second mounting hole (1101) is larger than the size of the first mounting hole (1100). The wall of the first mounting hole (1100) and the wall of the second mounting hole (1101) are connected by a support surface (1102). A bipolar plate (120) has a first cathode layer (121) which is embedded in the first mounting hole (1100). A cathode diffusion layer (130) is attached to the first cathode layer (121) of the bipolar plate (120); The first sealing ring (140) is sleeved on the cathode diffusion layer (130) and embedded in the second mounting hole (1101), and the end face of the first sealing ring (140) is in contact with the support surface (1102); An exchange membrane (150) is embedded in the second mounting hole (1101) and is attached to the first sealing ring (140) and the cathode diffusion layer (130); An anode diffusion layer (160) is located inside the second mounting hole (1101) and is attached to one end face of the exchange membrane (150) away from the cathode diffusion layer (130); wherein, the first direction is parallel to the arrangement direction of the bipolar plate (120), the cathode diffusion layer (130) and the exchange membrane (150).
2. The electrolysis chamber according to claim 1, characterized in that, The bipolar plate (120) also has a first anode layer (122) disposed opposite to the first cathode layer (121). The first anode layer (122) of the bipolar plate (120) is attached to the anode diffusion layer (160) of the adjacent electrolytic cell (100). The first anode layer (122) of the adjacent electrolytic cell (100) is inserted into the second mounting hole (1101) of the electrolytic cell (100).
3. The electrolysis chamber according to claim 1, characterized in that, The end face of the cathode diffusion layer (130) facing away from the first cathode layer (121) is flush with the end face of the first sealing ring (140) facing away from the support surface (1102).
4. The electrolysis chamber according to claim 2, characterized in that, It also includes an anode pressure ring (170), which is located between the outer periphery of the anode diffusion layer (160) and the inner sidewall of the second mounting hole (1101).
5. The electrolysis chamber according to claim 4, characterized in that, The anode pressure ring (170) of one of the electrolysis chambers (100) is sleeved on the first anode layer (122) of the adjacent electrolysis chamber (100).
6. The electrolysis chamber according to claim 1, characterized in that, The pole frame (110) has a second anode layer (112) and a second cathode layer (111) connected sequentially along a first direction. The second anode layer (112) has a second anode medium inlet (1121), a first bridge flow channel (1122), a first opening (1123), a second bridge flow channel (1124), and a second anode medium outlet (1125) connected sequentially. The second cathode layer (111) has a third bridge flow channel (1111), a second cathode medium outlet (1112), and a second opening (1115). The second opening (1115) and the first opening (1123) together form the first mounting hole (1100) and the second mounting hole (1101). The second opening (1115) is connected to the second cathode medium outlet (1112) through the third bridge flow channel (1111).
7. The electrolysis chamber according to claim 6, characterized in that, It also includes a first sealing assembly (180), which includes a first sealing element (181) and a cathode medium sealing element (182). The outer periphery of the second anode layer (112) is provided with a first groove (1126), and the first sealing element (181) is embedded in the first groove (1126). The second anode layer (112) is provided with a second groove (1127) at the edge of the second cathode medium outlet (1112), and the cathode medium sealing element (182) is embedded in the second groove (1127). And / or, it also includes a second sealing assembly (190), the second sealing assembly (190) including a second seal (191) and an anode medium seal (192), the outer periphery of the second cathode layer (111) is provided with a third groove (1113), the second seal (191) is embedded in the third groove (1113); the second cathode layer (111) is provided with a fourth groove (1114) at the edges of the second anode medium inlet (1121) and the second anode medium outlet (1125), respectively, the anode medium seal (192) is embedded in the fourth groove (1114).
8. The electrolysis chamber according to claim 1, characterized in that, The bipolar plate (120) is formed by any one of etching, stamping and machining processes; And / or, the bipolar plate (120) is made of any one of titanium, stainless steel, nickel and carbon steel.
9. The electrolysis chamber according to claim 1, characterized in that, Both the cathode diffusion layer (130) and the anode diffusion layer (160) are made of any one of titanium felt, carbon paper, nickel felt, nickel foam, or stainless steel felt.
10. An electrolytic cell, characterized in that, The device includes a plurality of electrolytic cells as described in any one of claims 1 to 9, and further includes two pressure plates (200) and a plurality of fasteners (300). The plurality of electrolytic cells (100) are arranged along a first direction, and the pressure plates (200) are respectively disposed at both ends of the arrangement direction. The plurality of fasteners (300) are distributed around the plurality of electrolytic cells (100), and the fasteners (300) pass through the edges of the two pressure plates (200) for pressing the plurality of electrolytic cells (100).