A push-type inspection connector for fuel cells

Abstract

The present invention discloses a push-type inspection connector for a fuel cell, which comprises a first housing, a tightening device, a connecting buckle and a connecting lock. The first housing is cooperatively installed with a plate electrode, and the connecting buckle is clamped and locked with the plate electrode through the tightening device and the connecting lock. For this push-type inspection connector for a fuel cell, through the cooperation of the tightening device, the connecting buckle and the connecting lock with the plate electrode, the connecting buckle is clamped with the plate electrode through the tightening device, and the tightening device and the connecting buckle are locked through the connecting lock, which can improve the reliability of the connector. By pressing the connecting buckle and the connecting lock, the locking relationship between the tightening device and the connecting buckle can be released and established, and the installation and disassembly of the connector can be realized by pressing down the connecting buckle. The connecting buckle and the tightening device are mutually matched with the wedge-shaped groove and straight groove reserved on the plate electrode, which improves the compatibility of the connector with the fuel cell stack.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and particularly to a push-type inspection connector for a fuel cell. Background Art

[0002] Generally speaking, a fuel cell inspection system is used to monitor the voltage during the actual operation of the stack, and then judge the state of the stack, which is very important in the fuel cell module. At present, the inspection of fuel cells is mainly achieved through welding or connectors. The connector can be directly fixed on the plate or on the fastening structure. Manual welding is affected by various factors and has strict quality control requirements. The connector is limited by the assembly accuracy of the stack and the reliability of the connector, and has extremely high requirements for the assembly accuracy of the stack.

[0003] For the welding inspection form, at present, the plate inspection welding is mainly achieved through manual welding, which is easy to cause welding defects, resulting in risks such as false welding and short circuit between the welding point and the adjacent plate, affecting the detection of data during the use and operation of the stack; for the connector form, limited by the internal width of the plug, if the contact of the plug is to be ensured, the reserved clearance margin should be small, and the assembly accuracy of the stack should be very high. If the margin left by the connector is large, there will be situations such as the connector shaking, and its normal use cannot be guaranteed. During the long-term operation process, due to the attenuation of the stack assembly force, the thickness of its single cell will change. If a fixed connector is used and the connector is fastened to the fastening structure, it will generate a pulling force on the bipolar plate, causing risks such as short circuit leakage. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a push-type inspection connector for a fuel cell, which improves the compatibility of the connector with the assembly accuracy of the stack and the firmness after the connector is installed.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A push-type inspection connector for a fuel cell, including a first housing, a tightening device, a connection buckle and a connection lock. The first housing is cooperatively installed with the plate, and the connection buckle is clamped and locked with the plate through the tightening device and the connection lock.

[0006] Preferably, the tightening device includes a thimble structure and an elastic device. The thimble structure is integrally formed by a first support portion and a second support portion. The first support portion is cooperatively installed with the plate, and the second support portion is a U-shaped support plate. The second support portion is cooperatively installed with the connection buckle through a first mounting slot hole and a second mounting slot hole provided on the connection buckle and the connection lock. The elastic device is arranged between the second support portion and the connection buckle.

[0007] Preferably, the connection buckle is integrally formed by a locking portion and a clamping portion.

[0008] A semi-open box structure is provided in the middle of the locking part. The first mounting slot and the second mounting slot are provided at the bottom of the box body. A protruding device matching the connecting lock is provided between the first mounting slot and the second mounting slot. The first side and the second side of the box body are provided with a third mounting slot and a fourth mounting slot matching the connecting lock. The third side and the fourth side of the box body are provided with a first buckle and a second buckle.

[0009] The clamping part is a symmetrically arranged clamping device.

[0010] Preferably, the elastic device is a spring.

[0011] Preferably, the connecting lock is a block structure. A first wedge-shaped structure matching the protruding device is provided inside the connecting lock. A straight groove structure perpendicular to the first wedge-shaped structure is also provided inside the connecting lock. A first boss structure and a second boss structure matching the third mounting slot and the fourth mounting slot are provided on the first contact surface and the second contact surface of the connecting lock.

[0012] Preferably, the third contact surface and the fourth contact surface of the connecting lock are a first friction surface and a second friction surface matching the second supporting part. The connecting lock is cooperatively installed with the second supporting part through the first friction surface and the second friction surface.

[0013] Preferably, a straight groove matching the shape of the electrode plate is provided inside the first housing body. A second wedge-shaped structure cooperatively installed with the connecting buckle is provided on the side surface of the first housing body.

[0014] Preferably, a first wire guiding shell and a second wire guiding shell are further included. The first wire guiding shell and the second wire guiding shell are symmetrically arranged with respect to the electrode plate. The first wire guiding shell and the second wire guiding shell are installed at the reserved positions of the first housing.

[0015] Preferably, a wedge-shaped groove matching the thimble structure is provided in the middle of the electrode plate. Straight grooves matching the connecting buckle are symmetrically provided on both sides of the electrode plate.

[0016] Preferably, the materials of the first housing, the connecting buckle, the thimble structure, the first wire guiding shell, the second wire guiding shell and the connecting lock are plastics.

[0017] The present invention has the following beneficial effects:

[0018] The present invention is installed in cooperation with the electrode plate through a tightening device, a connecting buckle and a connecting lock, which can improve the reliability of the connector. The connecting buckle is clamped with the electrode plate through the tightening device and the connecting lock. By pressing the connecting buckle and the connecting lock, the locking relationship between the tightening device and the connecting buckle can be released and established. The installation and disassembly of the connector are realized by pressing down the connecting buckle. The connecting buckle and the tightening device are matched with the reserved wedge-shaped groove and straight groove of the electrode plate to improve the compatibility of the connector with the stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of a push-type inspection connector for a fuel cell provided by the present invention;

[0020] Figure 2 FIG. is a schematic structural diagram of a push-type inspection connector for a fuel cell provided by the present invention;

[0021] Figure 3 FIG. is an assembly schematic diagram of a push-type inspection connector for a fuel cell provided by the present invention;

[0022] Figure 4 FIG. is a schematic structural diagram of the connecting buckle provided by the present invention;

[0023] Figure 5 FIG. is a schematic structural diagram of the connecting lock provided by the present invention.

[0024] In the figure: 1. Electrode plate; 2. First housing; 21. Second wedge structure; 3. First wire guiding shell; 4. Second wire guiding shell; 5. Thimble structure; 51. First supporting part; 52. Second supporting part; 6. Spring; 7. Connecting buckle; 71. Locking part; 72. Clamping part; 73. Raised device; 74. Third mounting slot hole; 75. Fourth mounting slot hole; 76. First buckle; 8. Connecting lock; 81. First wedge structure; 82. First boss structure; 83. First friction surface; 84. Straight groove structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1 , the present invention provides a technical solution: a push-type inspection connector for a fuel cell, including a first housing 2 (not shown), a tightening device, a connecting buckle 7 and a connecting lock 8. The first housing 2 (not shown) is installed in cooperation with the electrode plate 1, and the connecting buckle 7 is clamped and locked with the electrode plate 1 through the tightening device and the connecting lock 8.

[0027] The first housing is cooperatively installed with the electrode plate. The connecting buckle 7 is clamped with the electrode plate 1 through the tightening device and the connecting lock 8. By pressing the connecting buckle 7 and the connecting lock 8, the locking relationship between the tightening device and the connecting buckle can be released and established. By pressing down the connecting buckle 7, the disassembly of the connector can be achieved.

[0028] In a preferred embodiment, as Figures 2 to 3 shown, the tightening device includes a thimble structure 5 and an elastic device. The thimble structure 5 is integrally formed by a first support portion 51 and a second support portion 52. The first support portion 51 is cooperatively installed with the electrode plate 1. The second support portion is a U-shaped support plate. The second support portion is cooperatively installed through a first installation slot hole (not shown) and a second installation slot hole (not shown) provided on the connecting buckle 7 and the connecting lock 8. The elastic device is arranged between the second support portion 52 and the connecting buckle 7. As Figure 4 shown, Figure 4 is a structural diagram of the connecting buckle. The connecting buckle 7 is integrally formed by a locking portion 71 and a clamping portion 72. A semi-open box structure is arranged in the middle of the locking portion 71. The first installation slot hole (not shown) and the second installation slot hole (not shown) are arranged at the bottom of the box body. A convex device 73 matching the connecting lock 8 is arranged between the first installation slot hole and the second installation slot hole; a third installation slot hole 74 and a fourth installation slot hole 75 matching the connecting lock are arranged on the first side surface and the second side surface of the box body, and a first buckle 76 and a second buckle (not shown) are arranged on the third side surface and the fourth side surface of the box body; the clamping portion 72 is a symmetrically arranged clamping device. Specifically, the elastic device is a spring.

[0029] During the assembly process of the connector, press the first buckle and the second buckle to move the connecting lock 8 up one grid, releasing the locking relationship between the thimble structure 5 and the connecting buckle 7; press down the connecting buckle 7, and rely on the wedge-shaped structure of the first housing 2 to open the clamping portion 72 of the connecting buckle 7, insert it into the electrode plate 1, press both sides of the connecting buckle 7 to make it return to its position, and clamp it in the groove of the first housing 2. Press down the connecting lock 8 to lock the connecting buckle 7 and the thimble structure 5, and the installation and disassembly of the connector can be achieved.

[0030] The thimble structure 5 and the connecting buckle 7 are connected together by a spring 6. The spring 6 provides elastic force. In the natural state, the thimble structure 5 and the connecting buckle 7 are subjected to opposite forces along the insertion direction. The thimble structure 5 abuts against the wedge-shaped groove of the bipolar plate and cooperates with the connecting buckle 7. Through the connecting lock 8, the electrode plate 1 is clamped. The electrode plate 1 is reserved with a wedge-shaped structure, which cooperates with the thimble structure 5 and the connecting buckle 7, greatly improving the compatibility of the connector with the stack.

[0031] In a preferred embodiment, as Figure 5 shown, Figure 5The figure shows the structure of the connecting buckle. The connecting buckle 8 is a block structure, and a first wedge-shaped structure 81 matching the convex device 73 is arranged inside the connecting buckle 8. A straight groove structure 84 perpendicular to the first wedge-shaped structure 81 is also arranged inside the connecting buckle. First boss structures 82 and second boss structures 83 (not shown) matching the third mounting slot hole 74 and the fourth mounting slot hole 75 are arranged on the first contact surface and the second contact surface of the connecting buckle 8. The third contact surface and the fourth contact surface of the connecting buckle 8 are a first friction surface 83 and a second friction surface (not shown) matching the second support part. The connecting buckle 8 is cooperatively installed with the second support part 52 through the first friction surface 83 and the second friction surface.

[0032] During the assembly process of the connector, when pressing the first buckle, the second buckle, the first boss structure and the second boss structure, due to the existence of the wedge groove structure, the connecting buckle 8 can be squeezed in the direction of the first boss structure 82 and the second boss structure, causing the connecting buckle 8 to move up one grid, releasing the locking relationship between the ejector pin structure 5 and the connecting buckle 7; when pressing down the connecting buckle 7, relying on the wedge-shaped structure of the first housing 2, the clamping part 72 of the connecting buckle 7 is opened, inserted into the electrode plate 1, pressing both sides of the buckle of the connecting buckle 7 to make it return to its position and be stuck in the groove of the first housing 2, pressing down the connecting buckle 8 to lock the connecting buckle 7 and the ejector pin structure 5, then the installation and disassembly of the connector can be realized.

[0033] A straight groove matching the shape of the electrode plate 1 is arranged inside the body of the first housing 2, and a second wedge-shaped structure 21 for cooperatively installing with the connecting buckle 7 is arranged on the side surface of the first housing 2. The first wire guiding shell 3 and the second wire guiding shell 4 are also included. The first wire guiding shell 3 and the second wire guiding shell 4 are symmetrically arranged relative to the electrode plate 1, and the first wire guiding shell 3 and the second wire guiding shell 4 are installed at the reserved positions of the first housing 2. Terminal wire harnesses are arranged on the first wire guiding shell and the second wire guiding shell. The materials of the first housing 2, the first wire guiding shell 3, the second wire guiding shell 4, the ejector pin structure 5, the connecting buckle 7 and the connecting buckle 8 are plastics.

[0034] The second support part of the ejector pin structure 5 can slide up and down on the connecting buckle 7. The first friction surface and the second friction surface of the connecting buckle 8 are strip structures, which can achieve the effect of increasing the friction force. The first boss structure 82 and the second boss structure (not shown) are used for locking and limiting. The connecting buckle 7 and the connecting buckle 8 have corresponding groove structures. After pressing down, the connecting buckle 8 opens outwards, thus realizing the clamping of the connecting buckle 7 and the ejector pin structure 5.

[0035] The terminal wire harness passes through the first wire guiding shell 3 and the second wire guiding shell 4 to realize the fixation and limitation of the terminal wire harness, and after installation, it is installed at the reserved position of the first housing 2 to realize the fixation of the inspection line. The functions of the first wire guiding shell and the second wire guiding shell are: one is to fix the wire harness, and the other is to protect the wire harness.

[0036] In a preferred embodiment, a wedge-shaped groove matching the thimble structure 5 is provided in the middle of the electrode plate 1, and straight grooves matching the connecting buckle 7 are provided on both sides of the electrode plate 1. A spring 6 is provided between the thimble structure 5 and the connecting buckle 7, so that the thimble structure 5 is subjected to opposite forces and clamps the electrode plate 1 by the opposite acting forces. The wedge-shaped structure (dovetail) on the electrode plate 1 abuts against the thimble structure 5 to limit the movement of the electrode plate in the left and right directions. In this case, there are restrictions in all directions of up, down, left, and right, which is equivalent to reducing the influence of the deviation caused by the stacking of the connectors during installation, thereby improving the compatibility of the connector with the stack assembly. The setting of the wedge-shaped groove can directly improve the compatibility of the connector with the stack assembly.

[0037] The new structure installs the connecting buckle and the fastening device in cooperation with the electrode plate, improving the firmness of the connector after installation. The connecting buckle is clamped and locked with the electrode plate through the fastening device and the connecting lock. By pressing the connecting buckle and the connecting lock, the locking relationship between the fastening device and the connecting buckle can be released and established. By pressing down the connecting buckle, the installation and disassembly of the connector can be realized. Through the cooperation of the wedge-shaped groove of the electrode plate with the fastening device and the connecting buckle, the compatibility of the connector with the stack is improved, and most of the parts are made of easily obtainable plastics, reducing the manufacturing cost.

[0038] It should be noted that in this document, the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and all of them should be included within the protection scope of the present invention.

Claims

1. A push-type inspection connector for a fuel cell, characterized in that It includes a first housing, a pressing device, a connecting buckle and a connecting lock; the first housing is installed in cooperation with the electrode plate, a straight groove matching the shape of the electrode plate is arranged inside the body of the first housing, and a second wedge-shaped structure for installing the connecting buckle in cooperation is arranged on the side of the body of the first housing; The connecting buckle is clamped and locked with the electrode plate through the pressing device and the connecting lock; the pressing device includes a thimble structure and an elastic device, the thimble structure is integrally formed by a first supporting part and a second supporting part, the first supporting part is installed in cooperation with the electrode plate, and the second supporting part is installed in cooperation with the connecting buckle through a first mounting hole and a second mounting hole arranged on the connecting buckle and the connecting lock, and the elastic device is arranged between the second supporting part and the connecting buckle; The connecting buckle is integrally formed by a locking part and a clamping part, a semi-open box structure is arranged in the middle of the locking part, the first mounting hole and the second mounting hole are arranged at the bottom of the box body, and a protruding device matching the connecting lock is arranged between the first mounting hole and the second mounting hole; the clamping part is a symmetrically arranged clamping device; A first wedge-shaped structure matching the protruding device is arranged inside the connecting lock, and a straight groove structure perpendicular to the first wedge-shaped structure is also arranged inside the connecting lock; A first boss structure and a second boss structure matching the third mounting hole and the fourth mounting hole are arranged on the first contact surface and the second contact surface of the connecting lock.

2. The push-type inspection connector for a fuel cell according to claim 1, wherein The second supporting part is a U-shaped support plate.

3. The push - type inspection connector for a fuel cell according to claim 2, wherein A third mounting hole and a fourth mounting hole matching the connecting lock are arranged on the first side surface and the second side surface of the box body, and a first buckle and a second buckle are arranged on the third side surface and the fourth side surface of the box body.

4. The push-type inspection connector for a fuel cell according to claim 2, characterized in that, The elastic device is a spring.

5. The push - type inspection connector for a fuel cell according to claim 1, wherein The connecting lock is a block structure.

6. The push-type inspection connector for a fuel cell according to claim 5, characterized in that, The third contact surface and the fourth contact surface of the connecting lock are a first friction surface and a second friction surface matching the second supporting part, and the connecting lock is installed in cooperation with the second supporting part through the first friction surface and the second friction surface.

7. The push-type inspection connector for a fuel cell according to claim 1, wherein It also includes a first wire guiding shell and a second wire guiding shell, the first wire guiding shell and the second wire guiding shell are symmetrically arranged relative to the electrode plate, and the first wire guiding shell and the second wire guiding shell are installed at the reserved positions of the first housing.

8. A push-type inspection plug-in connector for a fuel cell according to claim 1, characterized in that A wedge-shaped groove matching the thimble structure is arranged in the middle of the electrode plate, and straight grooves matching the connecting buckle are symmetrically arranged on both sides of the electrode plate.

9. A push-type inspection connector for a fuel cell according to claim 7, characterized in that, The materials of the first housing, the connecting buckle, the thimble structure, the first wire guiding shell, the second wire guiding shell and the connecting lock are plastics.

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