A fuel cell voltage patrol device connector

Abstract

The utility model relates to fuel cell system technical field, specifically disclose a kind of fuel cell voltage inspection device connector, including connector shell, retreat stop block, wire and terminal, one end of the wire extends to the outside of the connector shell, the other end of the wire and the terminal are crimped together, the terminal and the retreat stop block are all arranged in the inside of the connector shell, the retreat stop block can lock the terminal;Wherein, when the fuel cell voltage inspection device connector is inserted into the connector slot of the stack pole, the pole detection area on the stack pole is contacted with the bottom of the terminal. The fuel cell voltage inspection device connector provided by the utility model adopts double-sided buckle to improve the reliability of fixation, and the misplacement of terminal mounting hole can freely realize each detection or spacer detection.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell system technology, and more specifically, to a connector for a fuel cell voltage monitoring device. Background Technology

[0002] A fuel cell system is a device that uses hydrogen as fuel and generates electricity through the electrochemical reaction of hydrogen and oxygen. The electrochemical reaction occurs in a stack of multiple electrode plates and membrane electrode assemblies. Due to the small gaps between the electrode plates, the voltage monitoring connector can only detect the plates at intervals, leading to unreliable detection. Furthermore, because the fuel cell stack faces complex vibration conditions, the voltage monitoring connector may not be securely installed, becoming loose or experiencing significant relative displacement during vibration. This can cause increased wear between the terminals and the electrode plates, thus increasing contact resistance.

[0003] Existing voltage monitoring connectors mostly use a plate-based method to detect the voltage of fuel cell stacks, which suffers from low reliability. This fails to meet the requirements of some systems that need to test each plate individually. Furthermore, existing voltage monitoring connectors often use single-sided clips for fixation; if the clips fail, the connector cannot be effectively secured. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a connector for a fuel cell voltage inspection device. It employs a double-sided snap-fit ​​design to enhance the reliability of the fixation, while the staggered arrangement of the terminal mounting holes allows for flexible detection of each individual cell or a single cell.

[0005] As a first aspect of this utility model, a fuel cell voltage monitoring device connector is provided. The fuel cell voltage monitoring device connector includes a connector housing, a backstop block, a wire, and a terminal. One end of the wire extends to the outside of the connector housing, and the other end of the wire is crimped together with the terminal. The terminal and the backstop block are both disposed inside the connector housing, and the backstop block can lock the terminal. When the fuel cell voltage monitoring device connector is inserted into the connector slot of the fuel cell stack electrode plate, the electrode plate detection area on the fuel cell stack electrode plate contacts the bottom of the terminal.

[0006] Furthermore, the connector housing is provided with a housing buckle, buckle holes, terminal mounting holes, electrode slots, and baffles; the housing buckle is arranged vertically on both sides of the terminal mounting hole arrangement direction, the baffles are located on both sides of the housing buckle, the electrode slots are located at the bottom of the terminal mounting hole, and the buckle holes are located on both sides of the terminal mounting hole.

[0007] Furthermore, the lower part of the outer shell buckle is integrally connected to the bottom of the connector shell and has a certain bending arc. The upper part of the outer shell buckle is tilted outward at a certain angle. When the upper part of the outer shell buckle is pressed, the outer shell buckle bends inward, and the protrusion on the outer shell buckle retracts to within the widest position of the baffle. Two limiting hooks are provided in the connector slot of the fuel cell plate. After the two outer shell buckles are pressed into place, the distance between them is less than the minimum distance between the two limiting hooks, so as to ensure that the connector shell can be smoothly inserted into the connector slot of the fuel cell plate, and the two outer shell buckles can be locked with the two limiting hooks.

[0008] Furthermore, the terminal includes a terminal clamping area, a terminal limiting area, and a terminal crimping area. After the terminal is crimped with the wire through the terminal crimping area, the terminal is inserted into the interior of the connector housing from the terminal mounting hole until the terminal limiting area abuts against the limiting structure in the terminal mounting hole. Then, the anti-reverse block is inserted into the terminal mounting hole to lock the terminal.

[0009] Furthermore, the anti-reverse block is provided with a block buckle and a block boss. When the anti-reverse block is inserted into the terminal mounting hole, the block boss is inserted into the terminal mounting hole accordingly, and the block buckle is engaged in the buckle hole.

[0010] Furthermore, after the terminal is installed in the terminal mounting hole, the terminal clamping area is located in the electrode plate slot. The terminal clamping area is symmetrical along the center line of the electrode plate slot. When the fuel cell voltage monitoring device connector is inserted into the connector slot of the stack electrode plate, the electrode plate detection area will be inserted into the electrode plate slot and simultaneously enter the middle of the terminal clamping area, where it will be clamped by the two clamping pieces of the terminal clamping area.

[0011] Furthermore, the terminal clamping area adopts a wave-shaped structure, and each clamp has two protrusions that contact the electrode detection area.

[0012] Furthermore, the terminal mounting holes are arranged in two rows in a staggered manner; the fuel cell voltage inspection device connector can perform individual plate testing or spacer testing on the stack plates; when individual plates are tested, each terminal mounting hole is fitted with a terminal; when spacers are tested, one of the two rows of terminal mounting holes is fitted with a terminal.

[0013] The connector for the fuel cell voltage inspection device provided by this utility model has the following advantages: the connector shell adopts a double-sided snap-fit ​​design, which improves the reliability of clamping and facilitates installation and disassembly; at the same time, the staggered arrangement of the terminal mounting holes can freely realize the detection of each piece or the detection of the spacer, which increases the applicability of the voltage inspection connector. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof.

[0015] Figure 1 An overall assembly diagram of the connector and stack plates of the fuel cell voltage monitoring device provided by this utility model.

[0016] Figure 2 Cross-sectional view of the assembly of the connector and stack plates of the fuel cell voltage monitoring device provided by this utility model. Figure 1 .

[0017] Figure 3 Cross-sectional view of the assembly of the connector and stack plates of the fuel cell voltage monitoring device provided by this utility model. Figure 2 .

[0018] Figure 4 Schematic diagram of the connector for the fuel cell voltage monitoring device provided by this utility model Figure 1 .

[0019] Figure 5 Schematic diagram of the connector for the fuel cell voltage monitoring device provided by this utility model Figure 2 .

[0020] Figure 6 Schematic diagram of the connector housing provided by this utility model Figure 1 .

[0021] Figure 7 Schematic diagram of the connector housing provided by this utility model Figure 2 .

[0022] Figure 8 This is a schematic diagram of the anti-reverse stop block provided by this utility model.

[0023] Figure 9 This is a schematic diagram showing the connection between the terminal and the wire provided by this utility model.

[0024] Figure 10 A schematic diagram of the terminal provided by this utility model.

[0025] Figure 11(a) is a schematic diagram of the testing of each connector of the fuel cell voltage inspection device provided by this utility model.

[0026] Figure 11(b) is a schematic diagram of the separator detection of the connector of the fuel cell voltage inspection device provided by this utility model.

[0027] In the diagram: 100 - Fuel cell voltage monitoring device connector; 110 - Connector housing; 111(a) - First housing latch; 111(b) - Second housing latch; 112 - Snap-in hole; 113 - Terminal mounting hole; 114 - Plate slot; 115 - Baffle; 120 - Anti-reverse block; 121 - Block latch; 122 - Block boss; 130 - Wire; 140 - Terminal; 141 - Terminal clamping area; 142 - Terminal limiting area; 143 - Terminal crimping area; 200 - Stack plate; 210 - Limiting hook; 220 - Plate detection area. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the fuel cell voltage monitoring device connector proposed according to this utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0029] This embodiment provides a connector for a fuel cell voltage monitoring device, such as... Figure 1-5 As shown, the fuel cell voltage monitoring device connector 100 includes a connector housing 110, a backstop block 120, a wire 130, and a terminal 140. One end of the wire 130 extends to the outside of the connector housing 110, and the other end of the wire 130 is crimped together with the terminal 140. The terminal 140 and the backstop block 120 are both disposed inside the connector housing 110, and the backstop block 120 can lock the terminal 140. When the fuel cell voltage monitoring device connector 100 is inserted into the connector slot of the stack electrode plate 200, the electrode plate detection area 220 on the stack electrode plate 200 contacts the bottom of the terminal 140.

[0030] Preferably, such as Figure 6-7 As shown, the connector housing 110 is injection molded from non-metallic materials such as PA66+GF30 and LCP. The connector housing 110 is provided with housing buckles, buckle holes 112, terminal mounting holes 113, electrode slots 114, and baffles 115. The housing buckles are arranged vertically on both sides of the terminal mounting holes 113. The baffles 115 are located on both sides of the housing buckles. The electrode slots 114 are located at the bottom of the terminal mounting holes 113, and the buckle holes 112 are located on both sides of the terminal mounting holes 113.

[0031] It should be noted that the upper parts of the first housing clip 111(a) and the second housing clip 111(b) have different boss features to distinguish the two housing clips and avoid incorrect installation direction.

[0032] It should be noted that there are four baffles 115, located on both sides of the first outer shell buckle 111(a) and the second outer shell buckle 111(b), respectively. The width of the baffle 115 is equal to the maximum width of the outer shell buckle after it is pressed into place.

[0033] Specifically, the lower part of the outer shell buckle is integrally connected to the bottom of the connector outer shell 110 and has a certain bending arc. The upper part of the outer shell buckle is tilted outward at a certain angle. When the upper part of the outer shell buckle is pressed, the outer shell buckle bends inward, and the protrusion on the outer shell buckle retracts to within the widest position of the baffle 115. Two limiting hooks 210 are provided in the connector slot of the fuel cell plate 200. After the two outer shell buckles are pressed into place, the distance between them is less than the minimum distance between the two limiting hooks 210, so as to ensure that the connector outer shell 110 can be smoothly inserted into the connector slot of the fuel cell plate 200, and the two outer shell buckles can be locked with the two limiting hooks 210.

[0034] Preferably, such as Figure 9-10 As shown, the terminal 140 includes a terminal clamping area 141, a terminal limiting area 142, and a terminal crimping area 143. After the terminal 140 is crimped with the wire 130 through the terminal crimping area 143, the terminal 140 is inserted into the interior of the connector housing 110 through the terminal mounting hole 113 until the terminal limiting area 142 abuts against the limiting structure in the terminal mounting hole 113. Then, the anti-reverse block 120 is inserted into the terminal mounting hole 113 to lock the terminal 140.

[0035] Preferably, such as Figure 8 As shown, the anti-reverse block 120 is injection molded from non-metallic materials such as PA66+GF30 and LCP. The anti-reverse block 120 is provided with a block buckle 121 and a block boss 122. When the anti-reverse block 120 is inserted into the terminal mounting hole 113, the block boss 122 is inserted into the terminal mounting hole 113, and the block buckle 121 is engaged in the buckle hole 112.

[0036] Preferably, when the terminal 140 is installed in the terminal mounting hole 113, the terminal clamping area 141 is located in the electrode slot 114. The terminal clamping area 141 is symmetrical along the center line of the electrode slot 114. When the fuel cell voltage monitoring device connector 100 is inserted into the connector slot of the stack electrode 200, the electrode detection area 220 will be inserted into the electrode slot 114 and simultaneously enter the middle of the terminal clamping area 141, where it will be clamped by the two clips of the terminal clamping area 141.

[0037] Preferably, such as Figure 10 As shown, the terminal 140 is made of pure copper, copper alloy and other materials by stamping. The terminal clamping area 141 adopts a wave-shaped structure. Each clamp has two protrusions that contact the electrode detection area 220. The two clamps have a total of four contact points. The front end of the clamping area 141 adopts a trumpet-shaped structure to achieve effective electrode guiding.

[0038] Preferably, the terminal mounting holes 113 are arranged in two rows in a staggered manner, and the number of terminal mounting holes 113 can be adjusted according to actual needs; the fuel cell voltage inspection device connector 100 can perform individual plate inspection or spacer inspection on the stack plates 200; as shown in Figure 11(a), when each plate is inspected, each terminal mounting hole 113 is fitted with a terminal 140; as shown in Figure 11(b), when a spacer is inspected, one of the two rows of terminal mounting holes 113 is fitted with a terminal 140.

[0039] In this embodiment, (1) the outer shell of the fuel cell voltage inspection device connector adopts a double-sided snap-fit ​​design, which simultaneously snaps the limiting hooks on both sides of the connector slot of the stack electrode plate during installation. The pressing areas of the snap-fit ​​on both sides of the connector are designed with different protrusion features to distinguish them and prevent incorrect installation direction; (2) the terminal mounting holes of the fuel cell voltage inspection device connector are staggered to save space and make the terminal mounting holes and electrode plate slots more compact, enabling the inspection of each cell of the stack battery; (3) a backstop block is set and installed inside the fuel cell voltage inspection device connector to limit the terminals. To prevent the terminals from coming out of the connector housing, the anti-reverse block is provided with double-sided buckles that match the buckle mounting holes of the connector housing for easy installation; (4) On both sides of the buckles of the fuel cell voltage inspection device connector, there are baffle structures to prevent the buckles from being squeezed by the limit hooks of the stack plates during vibration and affecting the fixing effect; (5) The terminals of the fuel cell voltage inspection device connector are wavy, with two protrusions on each side contacting the plate detection area, and a total of four contact points on both sides with the plate detection area, improving contact reliability. The front end of the terminal adopts a horn-shaped structure to achieve effective plate guiding.

[0040] The connector for the fuel cell voltage inspection device provided by this utility model has a double-sided snap-fit ​​design on the connector shell, which improves the reliability of clamping and facilitates installation and disassembly. At the same time, the staggered arrangement of the terminal mounting holes can freely realize the detection of each piece or the detection of the spacer, which increases the applicability of the voltage inspection connector.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A connector for a fuel cell voltage monitoring device, characterized in that, The fuel cell voltage monitoring device connector (100) includes a connector housing (110), a backstop (120), a wire (130), and a terminal (140). One end of the wire (130) extends to the outside of the connector housing (110), and the other end of the wire (130) is crimped together with the terminal (140). The terminal (140) and the backstop (120) are both located inside the connector housing (110), and the backstop (120) can lock the terminal (140). When the fuel cell voltage monitoring device connector (100) is inserted into the connector slot of the stack electrode plate (200), the electrode plate detection area (220) on the stack electrode plate (200) contacts the bottom of the terminal (140).

2. The connector for a fuel cell voltage monitoring device according to claim 1, characterized in that, The connector housing (110) is provided with a housing buckle, a buckle hole (112), a terminal mounting hole (113), a plate slot (114), and a baffle (115); the housing buckle is arranged vertically on both sides of the terminal mounting hole (113) in the arrangement direction, the baffle (115) is located on both sides of the housing buckle, the plate slot (114) is located at the bottom of the terminal mounting hole (113), and the buckle hole (112) is located on both sides of the terminal mounting hole (113).

3. The connector for a fuel cell voltage monitoring device according to claim 2, characterized in that, The lower part of the outer shell buckle is integrated with the bottom of the connector shell (110) and has a certain bending arc. The upper part of the outer shell buckle is tilted outward at a certain angle. When the upper part of the outer shell buckle is pressed, the outer shell buckle bends inward and the protrusion on the outer shell buckle retracts to within the widest position of the baffle (115). Two limiting hooks (210) are provided in the connector slot of the battery plate (200). After the two outer shell buckles are pressed into place, the distance between them is less than the minimum distance between the two limiting hooks (210) to ensure that the connector shell (110) can be smoothly inserted into the connector slot of the battery plate (200) and that the two outer shell buckles can be locked with the two limiting hooks (210).

4. The connector for a fuel cell voltage monitoring device according to claim 2, characterized in that, The terminal (140) includes a terminal clamping area (141), a terminal limiting area (142), and a terminal crimping area (143). After the terminal (140) is crimped with the wire (130) through the terminal crimping area (143), the terminal (140) is inserted into the inside of the connector housing (110) through the terminal mounting hole (113) until the terminal limiting area (142) abuts against the limiting structure in the terminal mounting hole (113). Then, the anti-reverse block (120) is inserted into the terminal mounting hole (113) to lock the terminal (140).

5. A connector for a fuel cell voltage monitoring device according to claim 4, characterized in that, The anti-reverse block (120) is provided with a block buckle (121) and a block boss (122). When the anti-reverse block (120) is inserted into the terminal mounting hole (113), the block boss (122) is inserted into the terminal mounting hole (113) respectively, and the block buckle (121) is engaged in the buckle hole (112).

6. A connector for a fuel cell voltage monitoring device according to claim 4, characterized in that, When the terminal (140) is installed in the terminal mounting hole (113), the terminal clamping area (141) is located in the electrode slot (114). The terminal clamping area (141) is symmetrical along the center line of the electrode slot (114). When the fuel cell voltage inspection device connector (100) is inserted into the connector slot of the stack electrode (200), the electrode detection area (220) will be inserted into the electrode slot (114) and simultaneously enter the middle of the terminal clamping area (141), and be clamped by the two clips of the terminal clamping area (141).

7. A connector for a fuel cell voltage monitoring device according to claim 6, characterized in that, The terminal clamping area (141) adopts a wave-shaped structure, and each clamp has two protrusions that contact the electrode detection area (220).

8. A connector for a fuel cell voltage monitoring device according to claim 2, characterized in that, The terminal mounting holes (113) are arranged in two rows in a staggered manner; the fuel cell voltage inspection device connector (100) can perform individual plate inspection or spacer inspection on the stack plates (200); when each plate is inspected, each terminal mounting hole (113) is fitted with a terminal (140); when a spacer is inspected, one of the two rows of terminal mounting holes (113) is fitted with a terminal (140).

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