Splicing structure for fixing and sealing positive and negative rows of galvanic pile
By setting up copper row limit holes and positioning grooves in the fixed structure of the positive and negative rows of the fuel cell stack, combined with threaded holes and bolt connections, the poor sealing and limiting problems caused by excessive space through the plastic parts are solved. , realizes the accurate limit and stability of the copper row, ensures the satisfaction of sealing conditions and beautifies the appearance.
Patent Information
- Application Number
- CN202421089250.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the fixed structure of the positive and negative rows of the existing fuel cell stack, the space for the copper bar through the plastic parts is too large, resulting in poor sealing and the inability to limit the position of the copper bar, and the appearance is not beautiful.
Using a splicing structure for fixed sealing stack positive and negative rows, the copper row limit holes and positioning grooves are set on the plastic parts, combined with threaded holes and bolt connections, to ensure the accurate limit and stability of the copper rows, and through Glue-coated chamfers are sealed and beautifully treated.
The accurate limit and stability of the copper row is achieved, ensuring the satisfaction of sealing conditions, and at the same time beautify the appearance and avoiding the problem of excessive glue.
Smart Images
Figure CN222507659U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fuel cells, in particular to a splicing structure for fixing positive and negative rows of a sealed fuel cell stack. Background Art
[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. It is also called an electrochemical generator. It is the fourth power generation technology after hydroelectric power generation, thermal power generation, and atomic power generation. Since fuel cells convert part of the Gibbs free energy in the chemical energy of the fuel into electrical energy through electrochemical reactions, they are not limited by the Carnot cycle effect and therefore have high efficiency. In addition, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission parts, so they emit very little harmful gas and have a long service life.
[0003] In the existing technical solution, the positive and negative rows of the fuel cell stack (with rivet nuts) are fixed with plastic parts, and the copper row passes through the plastic parts and is sealed with glue. However, the plastic parts that fix the positive and negative rows need to leave space for the rivet nuts of the copper row to pass through the plastic parts, so there is a lot of space for the copper row to pass through the plastic parts, which makes it impossible to meet the sealing conditions (a lot of glue needs to be applied under the premise of sealing), and it will also cause the copper row to shake left and right, and the limit cannot be guaranteed. After gluing, the appearance is also very ugly because too much glue is applied. Utility Model Content
[0004] The utility model aims to solve the problem in the background technology that the space for the copper bar to pass through the plastic part is too large, resulting in failure to meet the sealing conditions and the copper bar being unable to be limited, and proposes a splicing structure for fixing the positive and negative bars of the sealed battery stack.
[0005] The technical solution of the utility model: a splicing structure of positive and negative bars of a fixed sealed battery stack, including a first copper bar and a second copper bar, wherein the first copper bar is L-shaped; and further comprising:
[0006] First plastic part;
[0007] And a second plastic part is spliced with the first plastic part. Two copper bar limiting holes are arranged at the joint between the second plastic part and the first plastic part. The first copper bar and the second copper bar respectively pass through the two copper bar limiting holes. A positioning groove is arranged at the bottom of the first plastic part, and the horizontal section of the first copper bar is fitted into the positioning groove.
[0008] Preferably, both the first plastic part and the second plastic part are provided with protrusions, and the two protrusions are butted together to form two copper bar limiting holes.
[0009] Preferably, a glue-coated chamfer a is provided at the joint between the first plastic part and the second plastic part, and a glue-coated chamfer b is provided around the top edge of the copper bar limiting hole.
[0010] Preferably, a plurality of opposing threaded holes a are provided on the first plastic member and the second plastic member, and the first plastic member and the second plastic member are connected by a plurality of bolts.
[0011] Preferably, a plurality of threaded holes b are vertically arranged on the first plastic part and the second plastic part, and the first plastic part and the second plastic part are connected to the upper cover by a plurality of bolts.
[0012] Compared with the prior art, the utility model has the following beneficial technical effects: the first copper bar and the second copper bar are limited by the copper bar limiting holes and the positioning grooves to ensure the accuracy and stability of the copper bar positions; in addition, the glue chamfers a and b are used to facilitate glue sealing and are more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 and Figure 2 They are all three-dimensional diagrams of an embodiment of the utility model;
[0014] Figure 3 and Figure 4 All of them are structural schematic diagrams of the working state of the present invention.
[0015] Figure numerals: 1. first plastic part; 2. second plastic part; 3. threaded hole a; 4. threaded hole b; 5. positioning groove; 6. first copper bar; 7. second copper bar; 8. glue chamfer a; 9. protrusion; 10. glue chamfer b; 11. copper bar limiting hole. DETAILED DESCRIPTION
[0016] like Figure 1-Figure 4 As shown, the utility model proposes a splicing structure of positive and negative bars of a fixed sealed battery stack, including a first copper bar 6 and a second copper bar 7, wherein the first copper bar 6 is L-shaped and the second copper bar 7 is substantially vertical; and further includes:
[0017] A first plastic part 1;
[0018] The second plastic part 2 is spliced with the first plastic part 1. Two copper bar limiting holes 11 are set at the joint between the second plastic part 2 and the first plastic part 1. The first copper bar 6 and the second copper bar 7 respectively pass through the two copper bar limiting holes 11. A positioning groove 5 is set at the bottom of the first plastic part 1, and the horizontal section of the first copper bar 6 is inserted into the positioning groove 5.
[0019] Further, a protrusion 9 is provided on both the first plastic part 1 and the second plastic part 2, and the two protrusions are butted to form two copper bar limiting holes 11. A glue chamfer a8 is provided at the butt joint of the first plastic part 1 and the second plastic part 2, and a glue chamfer b10 is provided around the top edge of the copper bar limiting hole 11. A plurality of relative threaded holes a3 are provided on the first plastic part 1 and the second plastic part 2, and the first plastic part 1 and the second plastic part 2 are connected by a plurality of bolts. A plurality of threaded holes b4 are vertically provided on both the first plastic part 1 and the second plastic part 2, and the first plastic part 1 and the second plastic part 2 are connected to the upper cover by a plurality of bolts.
[0020] In summary, when the utility model is used, the first copper bar 6 and the second copper bar 7 are first clamped by the first plastic part 1 and the second plastic part 2, that is, the first copper bar 6 and the second copper bar 7 pass through the two copper bar limiting holes 11, and the first copper bar 6 is further limited by the positioning groove 5, and then the first plastic part 1 and the second plastic part 2 are fastened and connected by bolts, and glue is applied on the glue chamfer a8 and the glue chamfer b10. After the glue is air-dried, the excess glue is scraped off to beautify the appearance. After the first plastic part 1 and the second plastic part 2 are spliced, they also need to be fastened and sealed with the battery stack cover. In the utility model, the first copper bar 6 and the second copper bar 7 are limited by the copper bar limiting holes 11 and the positioning grooves 5 to ensure the accuracy and stability of the copper bar positions. In addition, the glue chamfer a8 and the glue chamfer b10 are used to facilitate glue sealing and are more beautiful.
[0021] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A splicing structure for fixing positive and negative bars of a sealed battery stack, comprising a first copper bar (6) and a second copper bar (7), wherein the first copper bar (6) is L-shaped; characterized in that: Also includes: A first plastic part (1); The second plastic part (2) is spliced with the first plastic part (1); two copper bar limiting holes (11) are arranged at the joint between the second plastic part (2) and the first plastic part (1); the first copper bar (6) and the second copper bar (7) respectively pass through the two copper bar limiting holes (11); a positioning groove (5) is arranged at the bottom of the first plastic part (1); and the horizontal section of the first copper bar (6) is inserted into the positioning groove (5).
2. The splicing structure of positive and negative rows of a fixed sealed battery stack according to claim 1 is characterized in that: Both the first plastic part (1) and the second plastic part (2) are provided with protrusions (9), and the two protrusions are butted together to form two copper bar limiting holes (11).
3. The splicing structure of positive and negative rows of a fixed sealed battery stack according to claim 2 is characterized in that: A glue-coated chamfer a (8) is provided at the joint between the first plastic part (1) and the second plastic part (2), and a glue-coated chamfer b (10) is provided around the top edge of the copper bar limiting hole (11).
4. The splicing structure of positive and negative rows of a fixed sealed battery stack according to claim 1, characterized in that: A plurality of threaded holes a (3) facing each other are arranged on the first plastic part (1) and the second plastic part (2); the first plastic part (1) and the second plastic part (2) are connected by a plurality of bolts.
5. The splicing structure of positive and negative rows of a fixed sealed battery stack according to claim 1, characterized in that: A plurality of threaded holes b (4) are vertically arranged on the first plastic part (1) and the second plastic part (2), and the first plastic part (1) and the second plastic part (2) are connected to the upper cover via a plurality of bolts.