Abstract
An electrode module for a redox flow battery, includes an electrode (1) and a sealing frame (2), mechanically connected so that the electrode module that results therefrom can be used with no problems in redox flow cells.
Claims
1. An electrode module for a redox-flow battery, comprising an electrode (1) and a sealing frame (2), wherein the electrode (1) is mechanically connected to the sealing frame (2), wherein a clawing element (6) having a hook-shaped end which has a first portion extending in a first direction from the sealing frame (2) along a side surface of the electrode (1) and a laterally inwardly extending second portion extending from an end of the first portion into the electrode (1) and a third portion extending from an end of the second portion and extending in a second direction opposite to the first direction wherein the second and third portions of the hook-shaped end are embedded into the electrode (1) and the first portion, the second portion and the third portion are integrally formed.
2. An electrode module for a redox-flow battery, comprising an electrode (1) and a sealing frame (2), wherein the electrode (1) is mechanically connected to the sealing frame (2), wherein at least one channel (7) for electrolyte transportation is formed in the sealing frame (2), wherein a filter element (9) for an electrolyte is arranged in the channel (7) within the sealing frame.
3. An electrode module for a redox-flow battery, comprising a porous electrode (1) and a sealing frame (2), wherein the porous electrode (1) is mechanically connected to the sealing frame (2), wherein at least one channel (7) for electrolyte transportation is formed in the sealing frame (2), wherein the channel (7) projects into the porous electrode (1) in the form of a protuberance.
Description
DRAWINGS
(1) Shown in the drawings are:
(2) FIG. 1 is a side view and a top-down view of an electrode module, wherein in the left depiction of FIG. 1 a membrane is shown, which lies on the sealing frame;
(3) FIG. 2 shows three electrode modules, in which the sealing frame is provided with a channel;
(4) FIG. 3 shows two electrode modules, in which the sealing frames are provided with an undercut section;
(5) FIG. 4 is a side view and a top-down view of an electrode module, in which clawing elements are provided which fix the electrode;
(6) FIG. 5 shows three sectional views of sealing frames to each of which various clawing elements are attached;
(7) FIG. 6 is a sectional view and a top-down view of an electrode module, containing a sealing frame in which channels are configured;
(8) FIG. 7 shows three perspective views of various electrode modules;
(9) FIG. 8 is an electrode module in which in the sealing frame channels are configured, wherein the electrode is connected with the sealing channels by clawing elements;
(10) FIG. 9 shows in the top view, two electrode modules, the channels of which are aligned, and in the bottom view two electrode modules, which are situated next to each other, and in which filter elements are situated in the channels;
(11) FIG. 10 shows two electrode modules, in which the securing surfaces for the electrode are depicted schematically; and
(12) FIG. 11 shows in the left view, an arrangement made of two electrode modules, between which a membrane is placed; in the center view a section of a membrane on which bilaterally offset seals are situated; and in the right view another section of a membrane, on which very flat seals are situated bilaterally, slightly offset.
DETAILED DESCRIPTION
(13) FIG. 1 shows in the left view a sectional view of an electrode module for a redox flow battery, comprising an electrode 1 and a sealing frame 2. The electrode 1 is mechanically connected with the sealing frame 2.
(14) The right view of FIG. 1 shows a top-down view onto the electrode module.
(15) The electrode 1 exhibits a nonwoven, which in sealing frame 2 exhibits a porosity that manifests 20% to 95%, preferably 50% to 95%, of its porosity in an uncompressed state.
(16) In the left view as per FIG. 1 is shown that on sealing frame 2 a seal 3 is arranged. The seal 3 also adjoins a membrane 4.
(17) FIG. 2 shows in the upper view a sealing frame 2, on which a seal 3 is placed bilaterally. The sealing frame 2 exhibits a channel/groove 5. In this regard in the sealing frame 2 a surrounding channel 5 is configured. The channel 5 is configured to converge conically outward.
(18) In the center view of FIG. 2, a sealing frame 2 is shown, which exhibits a clawing element 6. The clawing element 6 is configured as a hook, which engages into the electrode 1.
(19) In the bottom view of FIG. 2, a sealing frame 2 is shown in which multiple channels 7 are configured. The sealing frames 2 according to FIG. 2 are about 5 mm high, wherein a channel 7 exhibits a diameter of about 2 mm.
(20) FIG. 3 shows sectional views of two sealing frames 2, each of which has channels 5, that are provided with an undercut section 8.
(21) FIG. 4 shows an electrode module which exhibits a clawing element 6 which is configured as a hook and projects into the interior of the electrode 1.
(22) FIG. 5 shows three sectional views of sealing frames 2 in each of which channels 5 are configured, wherein at least one clawing element 6 is assigned to each sealing frame 2.
(23) In the left view as per FIG. 5, small hooks in the manner of a Velcro enclosure are situated as the clawing elements 6.
(24) In the center view as per FIG. 5, small hooks are configured as barbs. These hooks form the clawing elements 6.
(25) In the right view as per FIG. 5, a large hook is provided as a clawing element 6, which projects in from an upper edge of sealing frame 2 into the flow-through plane of electrode 1.
(26) FIG. 6 in the left view shows an electrode module with a sealing frame 2, in which a channel 7 is configured. The right view as per FIG. 6 shows a top-down view of this electrode module.
(27) FIG. 7 shows several electrode modules in a perspective view. In the top view as per FIG. 7, an electrode module is shown, in which the sealing frame 2 is coated with polyoxymethylene, a thermoplastic elastomer, a polyolefin or polyester. By this means the sealing frame 2 is coated with an acid-resistant plastic in those areas that are in contact with a fluid.
(28) In the center view as per FIG. 7, a sealing frame 2 is shown in which three channels 7 are configured.
(29) In the bottom view as per FIG. 7, a sealing frame 2 is depicted, which exhibits a channel 7, which projects into the electrode 1 as a protuberance.
(30) FIG. 8 shows an electrode module, with sealing frames 2 in which channels 7 are configured, wherein the electrode 1 is connected with the channels 7 by clawing elements 6. The channels 7 project into the interior of the electrode 1 as protrusions and are engaged simultaneously with the electrode 1.
(31) FIG. 9 shows an arrangement comprising at least two electrode modules of the type described here, wherein two sealing frames 2 adjoin each other in alignment.
(32) In the top view as per FIG. 9 is depicted that the channels 7 of sealing frames 2 align with each other and are connected so as to conduct fluid. Through the channels 7 a line 7A is inserted, which not only connects the sealing frames 2 with each other, but also forms a joint channel for a fluid.
(33) In the bottom view as per FIG. 9, channels 7 are provided which project into the plane of electrode 1, namely into the felt/nonwoven plane, and are oriented parallel to it. In the channels 7 optionally a filter element 9 for an electrolyte can be situated.
(34) The channels 7 can be linked onto tubes with seals.
(35) In the top and bottom views, FIG. 10 shows an electrode module in which the electrode 1 is mechanically secured by attaching surfaces 10 to 14 in a sealing frame 2. The attaching surfaces 10 to 14 reduce the effective flow-through surface 15 of electrode 1.
(36) In the left view of FIG. 11 two electrode modules are shown which enclose a membrane 4 between them. A seal 3 is placed between the membrane 4 and the two sealing frames 2.
(37) The center view as per FIG. 11 shows that the seals 3 are arranged to be offset to each other.
(38) The right view as per FIG. 11 shows that flat seals 3 are situated largely offset to each other, on different sides of the membrane 4.
(39) The use of multi-lip seals is also conceivable.
