Integrated electrical connection device of galvanic pile voltage inspection system

Abstract

The utility model discloses an integrated electrical connection device of a galvanic pile voltage inspection system. The integrated electrical connection device comprises a locking module and a detection chuck module, the locking module comprises a bottom plate and a cover plate which are connected through a hinge. A square groove is formed in the cover plate, and a limiting groove with a T-shaped clamping groove is formed in the bottom plate. And the detection chuck module is arranged in the T-shaped clamping groove and comprises an insulating clamping part, a line connecting part and a copper clamping piece. According to the utility model, through the integrated and modular design, the electrical connection device of the redox flow battery stack voltage inspection system is simplified, the adaptability and interchangeability are improved, and the problems of low integration level, complex installation and potential safety hazards in the prior art are solved.

Description

Technical Field

[0001] This utility model belongs to the field of flow battery technology, and in particular relates to an integrated electrical connection device for a battery stack voltage inspection system. Background Technology

[0002] Flow batteries, as an important long-term energy storage technology, have attracted widespread market attention due to their advantages such as long storage time, large storage capacity, long system lifespan, and high safety. In the design of flow batteries, the energy storage stack consists of multiple individual cells connected in series or parallel. For high-power applications, hundreds of individual cells may be needed to form a stack. To ensure the safe and stable operation of the stack, the voltage of each individual cell must be maintained within a relatively stable range. If any individual cell in the stack malfunctions, causing its voltage to become abnormal, it will not only affect the performance of that individual cell but may also lead to malfunctions or damage to the entire stack or even the entire energy storage system. Therefore, real-time monitoring of the voltage of each individual cell within the stack is a critical aspect of ensuring system safety.

[0003] To facilitate this monitoring objective, the design typically exposes only a small portion of the electrode tabs of each individual cell for connecting to the voltage detection equipment. These electrode tabs are clamped between two electrode frames. Due to the close arrangement of the individual cells and limited space, this presents challenges to the electrical connections of the voltage monitoring system, especially in ensuring reliable electrical contact. Chinese patent CN220172526U discloses a connector snap-fit ​​solution with slots and connecting holes, establishing an electrical connection between the bipolar plate and the monitoring line by inserting the plug into the connecting hole. However, this solution requires a specific snap-fit ​​structure pre-installed on the bipolar plate of the battery stack, representing a customized design for a specific type of battery stack, thus limiting its versatility. Another Chinese patent CN113296002A proposes a bent structure with the main body extending to one side, achieving a secure connection by inserting it into a groove on the bipolar plate. Although this method provides a relatively reliable electrical connection, its installation process is complex, requiring the insertion of a connector for each individual cell before connecting the entire assembly to the electrical interface, making the operation cumbersome and time-consuming.

[0004] Furthermore, most existing solutions use a U-shaped insert design, with each cell corresponding to an independent insert, resulting in low integration. Installation primarily relies on manual insertion in sequence, which significantly increases workload and the risk of error when dealing with a large number of individual cells. Additionally, while some specially designed connection devices can improve connection quality, they often require careful consideration of voltage detection implementation during the fuel cell stack design phase and the use of specialized connectors for assembly. This not only increases the design and manufacturing costs of the fuel cell stack but also reduces product flexibility, necessitating a redesign of the connection mechanism with each product iteration. Summary of the Invention

[0005] The purpose of this utility model embodiment is to provide an integrated electrical connection device for a battery stack voltage inspection system, so as to solve the problems of complex installation, inconvenient operation and poor adaptability of the flow battery stack voltage inspection system.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is an integrated electrical connection device for a fuel cell stack voltage inspection system, including a locking module and a detection clamp module; the locking module includes a base plate and a cover plate, and the base plate and the cover plate are connected by a hinge;

[0007] The cover plate is also provided with a square groove that penetrates the cover plate, and the bottom plate is provided with a limiting groove that penetrates the bottom plate at the position corresponding to the square groove. T-shaped slots are symmetrically provided on both sides of the limiting groove; the detection clamp module is provided inside the T-shaped slot.

[0008] The detection clamp module consists of an insulating clamping part, a line connection part, and a clamping piece arranged sequentially from top to bottom; one end of the insulating clamping part is provided with keying parts on both sides that cooperate with the T-shaped slot, and the other end is a connector that cooperates with the limiting slot.

[0009] Furthermore, a through hole is provided on the side of the cover plate away from the hinge, and a fastening screw hole is provided at the corresponding position on the base plate; a fastening bolt is provided in the through hole.

[0010] Furthermore, a rubber or silicone pad with a thickness of 0.8 to 1 mm is provided on the inner surface of the cover plate.

[0011] Furthermore, a through hole is provided at the center of the connector of the insulating clamping part; a connecting pin is provided at the top of the line connection part, and a screw hole is provided at the center of the top surface of the connecting pin. The connecting pin is embedded in the through hole provided at the center of the connector of the insulating clamping part and is fixed by bolts and nuts; the bottom of the line connection part is a rectangular shell with a downward opening, and the clamping piece is provided inside the shell.

[0012] Furthermore, the outer wall of the clip has a straight protrusion in the middle, and the lower side of the protrusion is an inclined part that narrows and extends to the bottom clamping opening. The edge of the clamping opening is parallel to the straight protrusion in the middle of the outer wall. A limiting step is provided inward on the other side of the protrusion. A vertical part is provided above the limiting step. The two vertical parts of the clip are closed and connected, and the two sides of the clamping opening are open structures. Contact points are provided on the inner wall of the clamping opening.

[0013] Furthermore, the clips and circuit connection parts are made of copper.

[0014] Compared with the prior art, the beneficial effects of this utility model include the following:

[0015] 1. This utility model integrates and modularizes the electrical connection devices of the voltage monitoring system, simplifying the overall structure of the system. This not only makes the system more compact but also improves its integration and enhances its adaptability and interchangeability in different application scenarios. In actual production, relevant modules can be quickly replaced or upgraded according to actual needs without requiring large-scale modifications to the entire system.

[0016] 2. This invention is compatible with various models and sizes of fuel cell stacks, requiring only simple configuration and adjustment upon first use. This invention significantly reduces the operational difficulty for testing personnel, shortens installation time, and thus greatly improves testing efficiency. Furthermore, by inserting all test heads at once, this invention avoids the time-consuming and potentially error-prone process of connecting them one by one in traditional methods, ensuring the reliability and accuracy of the connection.

[0017] 3. Compared with the direct connection design of the plug-in in the traditional voltage inspection system, this utility model hides the copper clamp that is directly electrically connected to the fuel cell stack under the insulating fastening device, which effectively improves the safety of the system during installation and use, reduces the risk of accidental electric shock, and protects the personal safety of operators.

[0018] This utility model optimizes the electrical connection device of the single-cell voltage inspection system for flow battery stacks through integrated and modular design, making its structure simpler and more compact, improving the adaptability to different scenarios and the interchangeability of mechanical devices; it effectively solves the problems of low integration, complex installation and safety hazards in the prior art. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of an integrated electrical connection device;

[0021] Figure 2 This is a schematic diagram of the main structure of the locking module;

[0022] Figure 3 This is a schematic diagram of the detection chuck module structure. (a) is the overall view, and (b) is the disassembled view.

[0023] Figure 4 This is the left view of the detection chuck module;

[0024] Figure 5This is an installation diagram of an embodiment of the integrated electrical connection device;

[0025] Among them, 100 is the locking module; 110 is the cover plate; 111 is the square groove; 112 is the fastening bolt; 120 is the base plate; 121 is the T-shaped slot; 122 is the fastening screw hole; 130 is the hinge; 200 is the detection chuck module; 210 is the insulating clamping part; 220 is the line connection part; 230 is the clamping piece; 231 is the contact; 300 is the electrode frame plate of the fuel cell stack; and 310 is the electrode sheet of the fuel cell stack. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This invention provides an integrated electrical connection device for a flow battery stack voltage monitoring system. Specifically, it proposes a modular and highly flexible integrated electrical connection solution. Designed specifically for flow battery stack voltage monitoring systems, this device integrates all the electrode detection heads required for a single stack into a movable module, the number of which can be flexibly adjusted according to actual needs. This design not only provides reliable safety assurance but also greatly simplifies the installation process, reduces operational difficulty, and effectively saves time and labor. Furthermore, this electrical connection device has broad applicability and can meet the application requirements of most general-purpose flow battery stacks.

[0028] like Figure 1 In some specific embodiments, an integrated electrical connection device for a fuel cell stack voltage inspection system includes a locking module 100 and a detection clamp module 200. The number of detection clamp modules 200 can be flexibly increased or decreased according to the number of electrodes that need to be measured in the actual fuel cell stack. The detection clamp modules 200 are installed in the T-shaped slots 121 provided in the locking module 100. During use, the position of each detection clamp can be flexibly adjusted according to the actual spacing between the electrodes in the fuel cell stack.

[0029] like Figure 2In some specific embodiments, the locking module 100 includes a cover plate 110 and a base plate 120. The cover plate 110 and the base plate 120 are connected by a hinge 130 to realize their opening and closing functions. A square groove 111 is opened in the center of the cover plate 110 for electrical wiring. The base plate 120 is also provided with a limiting groove. At the bottom center of the limiting groove, T-shaped slots 121 matching the detection chuck module 200 are symmetrically arranged on both sides of the limiting groove for installing the detection chuck module 200. At the same time, a through hole is provided on the side of the cover plate 110 away from the hinge 130, and a fastening screw hole 122 is provided at the corresponding position on the base plate 120. A fastening bolt 112 is provided in the through hole. When the locking module 100 is not locked, the detection chuck module 200 can move freely in the slot to adjust the distance between the detection chucks.

[0030] In some possible implementations, to ensure the stability of the detection chuck module 200 and prevent it from slipping during operation, a rubber or silicone pad with a thickness of 0.8~1mm is attached to the inner surface of the cover plate 110. This not only provides the necessary fastening force but also effectively enhances the anti-slip performance, thereby ensuring a reliable connection between the detection chuck module 200 and the fuel cell stack. When the locking module 100 is locked, the detection chuck module 200 is pressed and fixed in place by the T-shaped slot 121 and the cover plate 110 and cannot move.

[0031] like Figures 3-4 In some possible implementations, the detection chuck module 200 includes an insulating clamping part 210, a wiring connection part 220, and a clamping piece 230. In some specific implementations, the insulating clamping part 210 is integrally formed of insulating material and is located at the top of the detection chuck module 200. The top of the insulating clamping part 210 includes symmetrically arranged locking keys, and the other end is a connector that cooperates with a limiting groove. The locking keys cooperate with the T-shaped locking groove 121 provided in the locking module 100, and the locking module 100 limits the movement direction of the detection chuck module 200. The middle part of the detection chuck module 200 is the wiring connection part 220, which is used to connect electrical wiring and the clamping piece 230. The wiring connection part 220 is a T-shaped part, preferably made of copper, but other conductive materials can be selected as needed. It includes a rectangular shell with an opening at the bottom and a connecting pin provided at the top. The connecting pin has a screw hole at the top for connecting wires.

[0032] In some specific embodiments, a through hole is provided at the center of the connector position of the insulating clamping part 210, and the connecting pin at the top of the line connection part 220 is embedded in the through hole. The insulating clamping part 210, the line connection part 220 and the wire are fixed by bolts and nuts.

[0033] In some possible implementations, the bottom of the detection clamp module 200 is a clamping piece 230, which is specifically a sheet metal part, preferably made of copper, but other conductive materials can be selected as needed. A straight protrusion is provided in the middle of the outer wall of the clamping piece 230, and the lower side of the protrusion is a narrowed inclined part that extends to the bottom clamping opening. The edge of the clamping opening is parallel to the straight protrusion in the middle of the outer wall. A limiting step is provided inward on the other side of the protrusion, and a vertical part is provided upward on the limiting step. The two vertical parts of the clamping piece 230 are closed and connected, and the two sides of the clamping opening are open structures. A contact point 231 is provided on the inner wall of the clamping opening, which can be set to be circular or square as needed to ensure the reliability of the electrical connection. After the clamping piece 230 is inserted into and clamps the electrode plate 310 of the fuel cell stack, the clamping piece 230 is opened, and the circuit connection part 220 naturally locks the clamping piece 230. At the same time, the restriction of the circuit connection part 220 ensures the holding force of the clamping piece 230 on the fuel cell stack electrode.

[0034] like Figure 5 The integrated electrical connection device of the fuel cell stack voltage inspection system described in this embodiment requires configuration of the detection clamp module 200 upon first use. First, select the corresponding number of detection clamp modules 200 according to the number of individual cells in the fuel cell stack being tested; install the detection clamp modules 200 sequentially in the T-shaped slots 121 provided in the base plate 120 of the locking module 100, and adjust the arrangement of the detection clamp modules 200 according to the spacing of the fuel cell stack electrode plates 310 so that the clamping plates 230 at the end of the detection clamp modules 200 correspond one-to-one with the fuel cell stack electrode plates 310.

[0035] After all the test clamp modules 200 have been positioned, cover plate 110 is placed on top and fastening bolts 112 are tightened. At this point, cover plate 110 and base plate 120 firmly secure all the test clamp modules 200. After preparation is complete, the entire connection device is aligned with the fuel cell electrode plates 310 and inserted for testing. After the line connection part 220 is inserted into the fuel cell, the entire connection device is firmly locked in place by the clamping of the fuel cell electrode frame plates 300 on both sides of the fuel cell electrode plates 310, ensuring a stable connection.

[0036] The specific embodiments illustrated are only for demonstrating the installation state and connection method of this utility model in actual use. The number and spacing of the detection clamps shown in the figures are merely examples. In practical applications, the number and spacing of the detection clamp modules 200 should be flexibly configured according to the specifications and requirements of the specific fuel cell stack. This utility model is not limited to the size and number of fuel cell stacks shown in the figures and is applicable to various specifications of fuel cell stacks. Users can adjust the configuration of the detection clamp modules 200 according to actual conditions to meet the needs of different application scenarios.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. An integrated electrical connection device for a fuel cell stack voltage inspection system, comprising a locking module (100) and a detection clamp module (200); characterized in that, The locking module (100) includes a base plate (120) and a cover plate (110), wherein the base plate (120) and the cover plate (110) are connected by a hinge (130); The cover plate (110) is also provided with a square groove (111) that penetrates the cover plate (110), and the bottom plate (120) is provided with a limiting groove that penetrates the bottom plate (120) at the position corresponding to the square groove (111). T-shaped slots (121) are symmetrically provided on both sides of the limiting groove; the detection clamp module (200) is provided inside the T-shaped slot (121); The detection clamp module (200) is composed of an insulating clamping part (210), a line connection part (220), and a clamping piece (230) arranged sequentially from top to bottom; one end of the insulating clamping part (210) is provided with keying parts that cooperate with the T-shaped slot (121) on both sides, and the other end is a connector that cooperates with the limiting slot.

2. The integrated electrical connection device for a fuel cell stack voltage inspection system according to claim 1, characterized in that, A through hole is provided on the side of the cover plate (110) away from the hinge (130), and a fastening screw hole (122) is provided at the corresponding position on the bottom plate (120); a fastening bolt (112) is provided in the through hole.

3. The integrated electrical connection device for a fuel cell stack voltage inspection system according to claim 1, characterized in that, The inner surface of the cover plate (110) is provided with a rubber pad or silicone pad with a thickness of 0.8~1mm.

4. The integrated electrical connection device for a fuel cell stack voltage inspection system according to claim 1, characterized in that, The insulating clamping part (210) has a through hole at the center of the connector; the line connection part (220) has a connecting pin at the top, and a screw hole at the center of the top surface of the connecting pin. The connecting pin is embedded in the through hole at the center of the connector of the insulating clamping part (210) and fixed by bolts and nuts; the bottom of the line connection part (220) is a rectangular shell with a downward opening, and the clamping piece (230) is set inside the shell.

5. The integrated electrical connection device for a fuel cell stack voltage inspection system according to claim 4, characterized in that, The clamp (230) has a straight protrusion in the middle of its outer wall. The lower side of the protrusion is an inclined part that narrows and extends to the bottom clamping opening. The edge of the clamping opening is parallel to the straight protrusion in the middle of the outer wall. A limiting step is provided inward on the other side of the protrusion. A vertical part is provided above the limiting step. The two vertical parts of the clamp (230) are closed and connected. The two sides of the clamping opening are open. The inner wall of the clamping opening is provided with a contact point (231).

6. The integrated electrical connection device for a fuel cell stack voltage inspection system according to claim 1, characterized in that, The clip (230) and the line connection part (220) are made of copper.

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