CN220731580U - Fuel cell load line clamping system - Google Patents
Fuel cell load line clamping system Download PDFInfo
- Publication number
- CN220731580U CN220731580U CN202322422491.6U CN202322422491U CN220731580U CN 220731580 U CN220731580 U CN 220731580U CN 202322422491 U CN202322422491 U CN 202322422491U CN 220731580 U CN220731580 U CN 220731580U
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- end plate
- bolt
- load line
- plate
- hole
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- 239000000446 fuel Substances 0.000 title claims abstract description 35
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model discloses a fuel cell load line clamping system which is used for connecting a load line with a current collecting plate on a fuel cell stack and comprises the fuel cell stack, the load line and a clamping fixture, wherein the clamping fixture comprises an upper end plate, a lower end plate and a clamping mechanism; the upper end plate and the lower end plate are of flat plate structures, the upper end plate and the lower end plate are arranged oppositely, a protruding part is arranged on the end face of one side of the lower end plate, which is close to the upper end plate, and an upper end plate through hole for the protruding part to pass through is formed in the upper end plate; the convex part on the lower end plate passes through the lug through hole of the current collecting plate on the lug, and the load wire is sleeved on the convex part on the lower end plate through the load wire terminal hole of the load wire; the clamping mechanism clamps the upper end plate and the lower end plate relatively, and the clamping mechanism clamps the upper end plate and the lower end plate relatively, so that a load line and a lug arranged between the upper end plate and the lower end plate are connected between the upper end plate and the lower end plate.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to a clamping system for a load line of a fuel cell.
Background
When the fuel cell stack is tested, a load wire is needed to be connected at the lug of the current collecting plate, and the load and the stack are connected through the load wire to form a closed loop, so that the fuel cell stack is tested. With the rapid progress of fuel cell technology in recent years, the power of a galvanic pile is greatly improved, the current output capacity is increased along with the current output capacity, and the current output capacity of the galvanic pile can reach 800-1200A nowadays, so that the galvanic pile needs to be connected with a plurality of load wires to reach the required current carrying capacity, otherwise, when the galvanic pile works, the loss generated by current through the wires can be converted into heat and cause burning of the galvanic pile, and the excessive load wires connected to the lugs in the current stage can cause the load wires to be too heavy, thereby adding difficulty to the installation of workers. For example, one having a current carrying capacity of 240mm 2 The copper core load wire of the fuel cell stack needs 2 wires to meet the current carrying requirement, but the load wire is heavy and needs two people to install at the same time. The installation process is as follows: one person holds the load wire to overlap the terminal hole of the load wire and the terminal hole of the current collecting plate and keep the load wire in a static state, the other person uses bolts to respectively penetrate through the terminal hole of the current collecting plate and the terminal hole of the load wire, and then uses nuts to match the bolts to connect the load wire with the current collecting plate.
Disclosure of Invention
In view of the above, the utility model discloses a fuel cell load line clamping system, which comprises the following specific schemes:
the fuel cell load line clamping system comprises a fuel cell stack and a load line, wherein the fuel cell stack comprises a current collecting plate, a lug is arranged on the current collecting plate, a lug hole of the current collecting plate is formed in the lug, a load line terminal hole is formed in the front end of the load line, and the fuel cell load line clamping system further comprises a clamping fixture, wherein the clamping fixture comprises an upper end plate, a lower end plate and a clamping mechanism;
the upper end plate and the lower end plate are of flat plate structures, the upper end plate and the lower end plate are arranged oppositely, a protruding part is arranged on the end face of one side of the lower end plate, which is close to the upper end plate, and an upper end plate through hole for the protruding part to pass through is formed in the upper end plate; the lug and the load line are positioned between the upper end plate and the lower end plate, the protruding part on the lower end plate passes through the lug through hole of the current collecting plate on the lug, and the load line is sleeved on the protruding part on the lower end plate through the terminal hole of the load line; the clamping mechanism clamps the upper end plate and the lower end plate relatively, and the clamping mechanism clamps the upper end plate and the lower end plate relatively, so that a load line and a lug arranged between the upper end plate and the lower end plate are connected between the upper end plate and the lower end plate.
As a preferable technical scheme of the utility model, the clamping mechanism comprises a bolt, wherein the bolt comprises a screw rod with threads on the periphery and a bolt end head arranged at the upper end of the screw rod;
the screw bolt is characterized in that a threaded hole for the bolt to pass through is formed in the lower end plate, a through hole for the bolt to pass through is formed in the upper end plate, the lower end of the screw rod on the bolt passes through the through hole in the upper end plate, and the screw rod is screwed into the threaded hole in the lower end plate.
As a preferable technical scheme of the utility model, the clamping mechanism comprises a bolt and a fastening knob,
the bolt comprises a screw rod with threads on the periphery and a bolt end head arranged at the upper end of the screw rod; the lower end plate is provided with a threaded hole for the bolt to pass through, the upper end plate is provided with a through hole for the bolt to pass through, the lower end of a screw rod on the bolt passes through the through hole on the upper end plate, and the screw rod is screwed into the threaded hole on the lower end plate; the fastening knob is in threaded connection with the screw rod of the bolt, and the fastening knob is positioned above the upper end plate.
As the preferable technical scheme of the utility model, the clamping mechanism further comprises a pre-pressing spring, the pre-pressing spring is sleeved on a screw rod of the bolt, the upper end of the pre-pressing spring is abutted on the fastening knob, the lower end of the pre-pressing spring is abutted on the upper end plate, and the protruding part is of a cylindrical structure.
As the preferable technical scheme of the utility model, the bolts are provided with two groups, the first bolt is arranged on the left side of the protruding part, the second bolt is arranged on the right side of the protruding part, and the screw rods of each group of bolts are respectively in threaded connection with a fastening knob and sleeved with a pre-pressing spring.
The beneficial effects are that: according to the utility model, through the design of the clamping fixture, the connection of the load line and the tab can be completed by one person, and the connection work efficiency of the load line and the fuel cell is improved.
Drawings
Fig. 1 is a schematic perspective view of a clamping fixture.
Fig. 2 is a schematic diagram of a front view structure of the clamping fixture.
Fig. 3 is a schematic view of the structure of the lower end plate.
Fig. 4 is a schematic view of a bolt structure.
Fig. 5 is a schematic view of a fuel cell stack structure.
In the figure: 1. the device comprises a lug, a collector plate lug hole, a clamping fixture, an upper end plate, a lower end plate, a boss, an upper end plate through hole, a bolt, a screw rod, a bolt end head, a fastening knob and a pre-compression spring.
Detailed Description
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 5, a current collecting plate is arranged in the fuel cell stack, a tab 1 is arranged on the current collecting plate, and a tab hole 2 of the current collecting plate is arranged on the tab 1. The total voltage of the long stack and the short stack in the fuel cell stack is different, but the current is the same in theory, so that load wires with stronger current carrying capacity are needed, the load wires are thicker and heavier and harder and are not easy to bend, so that when the load wires are installed with a current collecting plate of the fuel cell stack, a person needs to independently configure the load wires, the end parts of the load wires are provided with load wire terminal holes, the current collecting plate is provided with electrode lugs 1, the electrode lugs 1 are provided with current collecting plate electrode lug holes 2, bolts 8 are needed to penetrate through the current collecting plate electrode lug holes 2 and the load wire terminal holes respectively when the load wires are assembled with the electrode lugs 1, then nuts are used for fastening the load wires and the load wires, the process is completed by matching two persons, one person is responsible for holding the load wires, and the other person is responsible for assembling and connecting.
The utility model discloses a fuel cell load line clamping system for connecting a load line with a current collecting plate of a fuel cell stack, which is used for reducing manpower expenditure, improving working efficiency and realizing the assembly connection of the load line and the current collecting plate by one person, and comprises the fuel cell stack and the load line, wherein the fuel cell stack comprises the current collecting plate, a tab 1 is arranged on the current collecting plate, a current collecting plate tab hole 2 is formed in the tab 1, a load line terminal hole is formed in the front end of the load line, and the fuel cell load line clamping system further comprises a clamping fixture 3, and the clamping fixture 3 comprises an upper end plate 4, a lower end plate 5 and a clamping mechanism;
the upper end plate 4 and the lower end plate 5 are of flat plate structures, the upper end plate 4 and the lower end plate 5 are oppositely arranged, a protruding portion 6 is arranged on the end face, close to one side of the upper end plate 4, of the lower end plate 5, and an upper end plate through hole 7 used for the protruding portion 6 to penetrate is formed in the upper end plate 4. The electrode lug 1 and the load line are positioned between the upper end plate 4 and the lower end plate 5, the protruding part 6 on the lower end plate 5 penetrates through the through hole of the electrode lug 1 of the current collecting plate on the electrode lug 1, and the load line is sleeved on the protruding part 6 on the lower end plate 5 through the terminal hole of the load line; the clamping mechanism clamps the upper end plate 4 and the lower end plate 5 relatively, and the clamping mechanism clamps the upper end plate 4 and the lower end plate relatively, so that the load line and the tab 1 arranged between the upper end plate 4 and the lower end plate 5 are connected between the upper end plate 4 and the lower end plate 5.
When the load wire and the current collecting plate are assembled, the upper end plate 4 and the lower end plate 5 are separated, the protruding part 6 on the lower end plate 5 penetrates through the current collecting plate lug hole 2 on the lug 1 of the current collecting plate, the load wire is placed between the upper end plate 4 and the lower end plate 5, the load wire terminal hole is sleeved on the protruding part 6 on the lower end plate 5, and finally clamping force is applied to the upper end plate 4 and the lower end plate 5 through the clamping mechanism, so that the load wire and the lug 1 are clamped.
As a preferable embodiment of the present utility model, the clamping mechanism is a bolt 8, and the bolt 8 includes a threaded rod 9 having threads on an outer periphery thereof, and a bolt head 10 provided at an upper end of the threaded rod 9. The lower end plate 5 is provided with a threaded hole for the bolt 8 to pass through, and the upper end plate 4 is provided with a through hole for the bolt 8 to pass through.
The lower end of a screw rod 9 of the bolt 8 penetrates through a through hole in the upper end plate 4 and is in threaded connection with a threaded hole in the lower end plate 5, and a bolt end 10 is positioned above the upper end plate 4 and is used for assembling the upper end plate 4 and the lower end plate 5.
When the load wire and the current collecting plate are assembled, firstly, the bolts 8 are unscrewed, the upper end plate 4 and the lower end plate 5 are separated, then the protruding parts 6 on the lower end plate 5 penetrate through the current collecting plate lug holes 2 on the lugs 1 of the current collecting plate, then the load wire is placed between the upper end plate 4 and the lower end plate 5, the load wire terminal holes are sleeved on the protruding parts 6 on the lower end plate 5, finally, the bolts 8 are screwed, so that the bolt ends 10 of the bolts 8 press the upper end plate 4, the upper end plate 4 and the lower end plate 5 are attached to clamp the load wire and the lugs 1 of the current collecting plate, and the load wire and the lugs 1 of the current collecting plate are fixedly connected.
The short stack of the fuel cell stack is used for research and development and verification of the stack, and is generally composed of 10-15 membrane electrodes, and the short stack electrode lugs 1 are all vertically upwards due to the fact that the short stack membrane electrodes are less in distance between the positive current collecting plate and the negative current collecting plate. The spacing between the positive current collector and the negative current collector is smaller, resulting in a smaller spacing between the positive tab on the positive current collector and the negative tab on the negative current collector.
Taking fig. 5 as an example, a tab 1 on the left side is defined as a positive electrode tab, a tab 1 on the right side is defined as a negative electrode tab, when a load line is connected to the positive electrode tab, an upper end plate 4 and a lower end plate 5 are separated, the lower end plate 5 is inserted between the positive electrode tab and the negative electrode tab, then a boss 6 on the lower end plate 5 is inserted into a collector plate tab hole 2 on the positive electrode tab, an end face on one side of the boss 6 of the lower end plate 5 is attached to the positive electrode tab, then the load line is sleeved on the boss 6 on the lower end plate 5, a bolt 8 is screwed, and the upper end plate 4 and the lower end plate 5 are matched to clamp the load line and the positive electrode tab. When the bolt 8 is screwed, one end of the screw 9, which is far away from the bolt end 10, moves towards one side of the negative electrode tab, so that when the negative electrode tab is connected with a load line, the lower end plate 5 cannot be inserted between the positive electrode tab and the negative electrode tab due to position interference of the bolt 8.
In order to solve the above technical problem, as a preferred technical solution of the present utility model, the present utility model further includes a fastening knob 11, where the fastening knob 11 is screwed on the screw 9 of the bolt 8 and is located above the upper end plate 4. When the fixture is used for connecting the positive electrode lug and the negative electrode lug with the load wire, the upper end plate 4 and the lower end plate 5 are separated, the lower end plate 5 is inserted between the positive electrode lug and the negative electrode lug, then the bulge part 6 on the lower end plate 5 is inserted into the current collecting plate lug hole 2 on the positive electrode lug, the end face of the lower end plate 5, which is positioned on one side of the bulge part 6, is attached to the positive electrode lug, the load wire is sleeved on the bulge part 6 on the lower end plate 5, then the fastening knob 11 is screwed, the upper end plate 4 is tightly pressed by the fastening knob 11, the upper end plate 4 is attached to the lower end plate 5 to clamp the load wire and the lug 1 of the current collecting plate, and the load wire is fixedly connected with the lug 1 of the current collecting plate.
Through the mode, the upper end plate 4 and the lower end plate 5 can be clamped without screwing the bolts 8, the problem of position interference of the bolts 8 is solved, and the lower end plate 5 can be smoothly inserted between the positive electrode tab and the negative electrode tab in the process of connecting the positive electrode tab and the negative electrode tab with a load line.
The boss 6 has a cylindrical structure. Since the diameters of the collector lug holes 2 of different short stack lugs 1 may be different, in order to accommodate the connection of all short stack lugs 1 to a load line, the diameter of the boss 6 should be small so that it can pass through the collector lug holes 2 on most of the lugs 1. After the protruding part 6 on the lower end plate 5 is inserted into the collector plate lug hole 2 on the lug 1 during installation, when the diameter of the protruding part 6 on the lower end plate 5 is larger than that of the collector plate lug hole 2, a larger gap is reserved between the protruding part 6 on the lower end plate 5 and the collector plate lug 1, and the technical problem that the lower end plate 5 falls off from the lug 1 easily occurs.
As a preferred embodiment of the present utility model, the present utility model further includes a pre-compression spring 12, wherein the pre-compression spring 12 is sleeved on the screw 9 of the bolt 8, the upper end of the pre-compression spring 12 is abutted on the fastening knob 11, and the lower end of the pre-compression spring 12 is abutted on the upper end plate 4. In the actual installation process, firstly, the fastening knob 11 is unscrewed to enable the pre-pressing spring 12 to be in a semi-loosening state, the upper end plate 4 is pulled to enable the upper end plate 4 to be separated from the lower end plate 5, the protruding portion 6 on the lower end plate 5 is inserted into the current collecting plate lug hole 2 on the lug 1, then, a jacking force is applied to the upper end plate 4 through the pre-pressing spring 12 to enable the upper end plate 4 and the lower end plate 5 to be in a pre-clamping state, a small clamping force exists between the upper end plate 4 and the lower end plate 5, the upper end plate 4 and the lower end plate 5 can be clamped on the lug 1 in cooperation with the protruding portion 6, then, a load wire is held by a hand and is separated from the upper end plate 4 and the lower end plate 5, the load wire is sleeved on the protruding portion 6 on the lower end plate 5, then, the upper end plate 4 and the lower end plate 5 are loosened, the fastening knob 11 is screwed to enable the pre-pressing spring 12 to be in a compression state, and the load wire is connected with the lug 1 in cooperation with the lower end plate 5.
As a preferable solution of the present utility model, at least two sets of bolts 8 are provided, preferably, two sets of bolts 8 are provided, the first bolt 8 is disposed on the left side of the boss 6, the second bolt 8 is disposed on the right side of the boss 6, each set of bolts 8 is screwed with a fastening knob 11, and a pre-compression spring 12 is sleeved.
In the above embodiment, in order to achieve that the load line is in a vertically downward direction, the load line direction can be manually adjusted during tightening of the tightening knob 11.
While the utility model has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The fuel cell load line clamping system comprises a fuel cell stack and a load line, wherein the fuel cell stack comprises a current collecting plate, and a lug (1) is arranged on the current collecting plate, and is characterized in that a current collecting plate lug hole (2) is formed in the lug (1), a load line terminal hole is formed in the front end of the load line, and the fuel cell load line clamping system further comprises a clamping fixture (3), wherein the clamping fixture (3) comprises an upper end plate (4), a lower end plate (5) and a clamping mechanism;
the upper end plate (4) and the lower end plate (5) are of flat plate structures, the upper end plate (4) and the lower end plate (5) are arranged oppositely, a protruding part (6) is arranged on the end face, close to one side of the upper end plate (4), of the lower end plate (5), and an upper end plate through hole (7) for the protruding part (6) to penetrate is formed in the upper end plate (4);
the electrode lug (1) and the load line are positioned between the upper end plate (4) and the lower end plate (5), the protruding part (6) on the lower end plate (5) penetrates through the through hole of the electrode lug (1) of the current collecting plate on the electrode lug (1), and the load line is sleeved on the protruding part (6) on the lower end plate (5) through the terminal hole of the load line; the clamping mechanism clamps the upper end plate (4) and the lower end plate (5) relatively, and the clamping mechanism clamps the upper end plate (4) and the lower end plate relatively, so that a load line and a lug (1) arranged between the upper end plate (4) and the lower end plate (5) are connected between the upper end plate (4) and the lower end plate (5).
2. The fuel cell load line clamping system according to claim 1, wherein the clamping mechanism comprises a bolt (8), the bolt (8) comprising a screw (9) provided with threads on the outer periphery, and a bolt head (10) provided at the upper end of the screw (9);
the screw bolt is characterized in that a threaded hole for the bolt (8) to pass through is formed in the lower end plate (5), a through hole for the bolt (8) to pass through is formed in the upper end plate (4), and the lower end of a screw rod (9) on the bolt (8) passes through the through hole in the upper end plate (4) and is in threaded connection with the threaded hole in the lower end plate (5).
3. A fuel cell load line clamping system according to claim 1, wherein the clamping mechanism comprises a bolt (8), a tightening knob (11),
the bolt (8) comprises a screw (9) with threads on the periphery and a bolt end (10) arranged at the upper end of the screw (9); the lower end plate (5) is provided with a threaded hole for the bolt (8) to pass through, the upper end plate (4) is provided with a through hole for the bolt (8) to pass through, and the lower end of a screw rod (9) on the bolt (8) passes through the through hole on the upper end plate (4) and is in threaded connection with the threaded hole on the lower end plate (5); the fastening knob (11) is in threaded connection with the screw rod (9) of the bolt (8), and the fastening knob (11) is positioned above the upper end plate (4).
4. A fuel cell load line clamping system according to claim 3, wherein the clamping mechanism further comprises a pre-compression spring (12), the pre-compression spring (12) is sleeved on the screw rod (9) of the bolt (8), the upper end of the pre-compression spring (12) is abutted on the fastening knob (11), the lower end of the pre-compression spring (12) is abutted on the upper end plate (4), and the protruding portion (6) is of a cylindrical structure.
5. The fuel cell load line clamping system according to claim 4, wherein the bolts (8) are provided with two groups, the first bolt (8) is arranged on the left side of the protruding portion (6), the second bolt (8) is arranged on the right side of the protruding portion (6), and each group of bolts (8) is provided with a fastening knob (11) in a screwed manner and a pre-pressing spring (12) in a sleeved manner on the screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322422491.6U CN220731580U (en) | 2023-09-07 | 2023-09-07 | Fuel cell load line clamping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322422491.6U CN220731580U (en) | 2023-09-07 | 2023-09-07 | Fuel cell load line clamping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220731580U true CN220731580U (en) | 2024-04-05 |
Family
ID=90490131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322422491.6U Active CN220731580U (en) | 2023-09-07 | 2023-09-07 | Fuel cell load line clamping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220731580U (en) |
-
2023
- 2023-09-07 CN CN202322422491.6U patent/CN220731580U/en active Active
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