Contact terminal, electrical connector and controller assembly

Abstract

The present invention discloses a contact terminal, an electrical connector and a controller assembly. The electrical connector includes a connector body and a limit pin inserted on the connector body. The contact terminal is inserted into the connector body and is limited and fixed by the limit pin. The electrical connector is used to connect the bipolar plate of the fuel cell stack and the battery voltage monitoring controller. The contact terminal includes a terminal body, an abutting section and a connecting section. The terminal body has a first end and a second end arranged opposite to each other. The abutting section is connected to the first end of the terminal body, and the abutting section is provided with an elastic abutting portion for abutting against the bipolar plate of the fuel cell stack. The connecting section is connected to the second end of the terminal body for connecting to the battery voltage monitoring controller through a wire. The present invention improves the contact terminal of the electrical connector and its connection structure, improves the stability of the contact terminal, and enhances the connection stability of the electrical connector.

Description

Technical Field

[0001] The present invention relates to the field of technical electrical connectors, and particularly to a contact terminal, an electrical connector, and a controller assembly. Background Art

[0002] Currently, the bipolar plate of a hydrogen fuel cell stack and a Cell Voltage Monitoring (CVM) controller are mainly connected by an electrical connector. When connecting, the bipolar plate is first inserted into the electrical connector, and then signals or electrical energy are transmitted to the CVM controller through wires for data and energy conversion.

[0003] However, the electrical connector generally uses a two-metal-sheet clamping type contact terminal, and the clamping force of the contact terminal is weak. When the bipolar plates of the fuel cell stack are stacked and used in high and low temperature environments, affected by temperature, the deformation degrees of each bipolar plate due to thermal expansion and contraction are different, and the distances between the bipolar plates are also different, resulting in poor connection stability of the contact terminal of this structure. Summary of the Invention

[0004] The main object of the present invention is to provide a contact terminal, an electrical connector, and a controller assembly, aiming to improve the connection stability of the contact terminal to avoid the problem of disconnection of the electrical connector.

[0005] To achieve the above object, the present invention provides a contact terminal applied to an electrical connector. The electrical connector includes a connector body and a limit pin inserted into the connector body. The contact terminal is inserted into the connector body and is limited and fixed by the limit pin. The electrical connector is used to connect the bipolar plate of the fuel cell stack and the battery voltage monitoring controller. The contact terminal includes:

[0006] A terminal body having a first end and a second end disposed opposite to each other;

[0007] An abutting section connected to the first end of the terminal body. The abutting section is provided with an elastic abutting portion for abutting against the bipolar plate of the fuel cell stack; and

[0008] A connection section connected to the second end of the terminal body for connecting to the battery voltage monitoring controller through a wire.

[0009] In one embodiment, a through hole is provided on the abutting section. The hole wall on the side of the through hole close to the terminal body extends in a direction away from the connection section to form the elastic abutting portion. The extension arm is arranged in an arc shape and is used to abut against the side wall of the bipolar plate of the fuel cell stack.

[0010] In one embodiment, an insertion opening for inserting a wire connected to the battery voltage monitoring controller is provided at one end of the connecting section facing away from the terminal body.

[0011] In one embodiment, an extension arm is provided on the connecting section of the contact terminal. The extension arm extends from one side of the connecting section in the direction of its thickness. The extension arm is used to abut against the limit pin to limit the movement of the contact terminal along its length direction.

[0012] To achieve the above object, the present invention also provides an electrical connector for connecting a fuel cell bipolar plate and a battery voltage monitoring controller. The electrical connector includes:

[0013] A connector body having a plurality of jacks. The jacks have a first side and a second side disposed opposite to each other. The first side of the jack is for inserting and fixing the fuel cell bipolar plate, and the second side of the jack is for inserting a wire connecting the battery voltage monitoring controller.

[0014] A plurality of contact terminals, which are the contact terminals as described above. The plurality of contact terminals are inserted into the plurality of jacks one by one. The abutting section of the contact terminal is for abutting against the fuel cell bipolar plate. The connecting section of the contact terminal is for connecting to the battery voltage monitoring controller through a wire. And

[0015] A limit pin inserted into the connector body and extending into the jack to abut against the contact terminal to limit the movement of the contact terminal along its length direction.

[0016] The contact terminal includes:

[0017] A terminal body having a first end and a second end disposed opposite to each other.

[0018] An abutting section connected to the first end of the terminal body. The abutting section is provided with an elastic abutting portion for abutting against the fuel cell bipolar plate. And

[0019] A connecting section connected to the second end of the terminal body for connecting to the battery voltage monitoring controller through a wire.

[0020] In one embodiment, a first limiting groove is provided at one end of the connector body facing away from the fuel cell bipolar plate. The first limiting groove is disposed close to the jack.

[0021] The limit pin is inserted into the first limiting groove and the jack and abuts against the elastic abutting portion of the contact terminal.

[0022] In one embodiment, the contact terminal is provided with an extension arm, and the limit pin includes a limit pin body and a plurality of stop arms, clamping arms and limit arms arranged on one side of the limit pin body;

[0023] A plurality of the stop arms are inserted into the plurality of jacks one by one and are in one-to-one abutment with the extension arms of the plurality of contact terminals;

[0024] The first limit groove includes a first sub-slot and a second sub-slot. The number of the limit arms is two. The two limit arms are respectively inserted into the first sub-slot and the second sub-slot and are respectively attached to the two side walls of the adjacent side of the first sub-slot and the second sub-slot to limit the movement of the limit pin along the width direction of the connector body;

[0025] The number of the clamping arms is two. The two clamping arms are respectively arranged on both sides of the two limit arms and are respectively inserted into the first sub-slot and the second sub-slot. A hook is provided at the end of the clamping arm. Corresponding to the position of the hook in the first sub-slot and the second sub-slot, a clamping groove is provided. The hooks of the two clamping arms are respectively snapped into the clamping grooves in the first sub-slot and the second sub-slot to limit the movement of the limit pin along the length direction of the connector body.

[0026] In one embodiment, the bipolar plate of the stack has an embedding arm, and a back-off groove is provided on the embedding arm;

[0027] The electrical connector further includes a stop pin. A second limit groove is further formed on the connector body. The stop pin is inserted into the second limit groove and extends into the back-off grooves of the plurality of bipolar plates of the stack to limit the movement of the bipolar plates of the stack in the direction away from the contact terminals.

[0028] In one embodiment, the stop pin includes a first side plate and a second side plate connected to the first side plate. The second side plate is inserted into the back-off groove from the second limit groove, and the first side plate covers the notch of the second limit groove;

[0029] A convex portion is protruded on the side wall of the stop pin. A positioning hole is formed at the position corresponding to the convex portion in the second limit groove. The convex portion is snapped into the positioning hole to limit the movement of the stop pin along the length direction and the width direction of the connector body.

[0030] To achieve the above object, the present invention further provides a controller assembly, and the controller assembly includes:

[0031] Battery voltage monitoring controller;

[0032] An electrical connector, the electrical connector being the electrical connector as described above, the connecting section of the contact terminal of the electrical connector being connected to the battery voltage monitoring controller through a wire; and

[0033] A fuel cell bipolar plate, the number of fuel cell bipolar plates being multiple, each of the fuel cell bipolar plates having an insertion arm, a retaining groove being provided on the insertion arm, the insertion arms of the multiple fuel cell bipolar plates being inserted into the multiple jacks of the electrical connector one by one, the insertion arm being in contact with the contact terminal of the electrical connector, and the positioning pin of the electrical connector being inserted into the second limiting groove of the electrical connector and extending into the retaining groove to limit the movement of the fuel cell bipolar plate;

[0034] The electrical connector includes:

[0035] A connector body, having a plurality of jacks, the jacks having a first side and a second side disposed opposite to each other, the first side of the jack being for inserting and fixing the fuel cell bipolar plate, and the second side of the jack being for inserting a wire connecting the battery voltage monitoring controller;

[0036] A plurality of contact terminals, the contact terminals being the contact terminals as described above, the plurality of contact terminals being inserted into the plurality of jacks one by one; the abutting section of the contact terminal being for abutting against the fuel cell bipolar plate; the connecting section of the contact terminal being for connecting to the battery voltage monitoring controller through a wire; and

[0037] A limiting pin, inserted into the connector body and extending into the jack to abut against the contact terminal to limit the movement of the contact terminal along its length direction.

[0038] In the technical solution of the present invention, since the terminal body of the contact terminal has a first end and a second end disposed opposite to each other, the abutting section is connected to the first end of the terminal body, the abutting section is provided with an elastic abutting portion for abutting against the fuel cell bipolar plate, and the connecting section is connected to the second end of the terminal body for connecting to the battery voltage monitoring controller through a wire. By providing the elastic abutting portion, the contact area between the contact terminal and the fuel cell bipolar plate is increased, the stability of the contact terminal is improved, and further the connection stability of the electrical connector is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0040] Figure 1Schematic diagram of a structure of an electrical connector of the present invention and a bipolar plate of a stack connected thereto;

[0041] Figure 2 Exploded view of an embodiment of the electrical connector of the present invention and the bipolar plate of the stack connected thereto;

[0042] Figure 3 Schematic diagram of a structure of an embodiment of a contact terminal of the present invention;

[0043] Figure 4 Side view of an embodiment of the electrical connector of the present invention and the bipolar plate of the stack connected thereto;

[0044] Figure 5 is Figure 4 Cross-sectional view taken at A-A in

[0045] Figure 6 Exploded view of a connector body, a limit pin and a stop pin in an embodiment of the electrical connector of the present invention;

[0046] Figure 7 Exploded view of the connector body, the limit pin and the stop pin in another perspective in an embodiment of the electrical connector of the present invention.

[0047] Explanation of reference numerals in the drawings:

[0048] Label Name Label Name 100 Terminal body 210 Elastic abutting portion 200 Abutting section 11 Wire 300 Connection section 200a Through hole 201 Extension arm 300a Insertion interface 301 Stretching arm 10 Connector body 20 Contact terminal 30 Limit pin 10a Jack 10b First limit groove 31 Limit pin body 32 Stop arm 33 Clamping arm 34 Limit arm 10b1 First sub-slot 10b2 Second sub-slot 40 Stop pin 20b Second limit groove 41 First side plate 42 Second side plate 401 Convex portion 1 Electrical connector 2 Stack bipolar plate 21a Anti-retreat groove

[0049] The realization of the object of the present invention, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to 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 of 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.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] Currently, the bipolar plate of a hydrogen fuel cell stack and the Cell Voltage Monitoring (CVM) controller are mainly connected by an electrical connector. When connecting, the bipolar plate is first inserted into the electrical connector, and then signals or electrical energy are transmitted to the CVM control device through wires for data and energy conversion.

[0054] In some exemplary technologies, the electrical connector generally uses two metal sheet clamping type contact terminals, and the clamping force of the contact terminals is weak. When the bipolar plates of the fuel cell stack are stacked and used in high and low temperature environments, affected by temperature, the deformation degrees of thermal expansion and contraction of each bipolar plate are different, and the distances between the bipolar plates are also different, resulting in poor connection stability of the contact terminals of this structure.

[0055] In order to improve the connection stability of the contact terminals and avoid the problem of disconnection of the electrical connector, the present invention proposes a contact terminal, which is applicable to various electrical connectors, especially the electrical connector connecting the bipolar plate of a hydrogen fuel cell stack and the battery voltage monitoring controller, and is not limited here.

[0056] Refer to Figures 1 to 3 , in one embodiment, the contact terminal 20 is applied to the electrical connector 1. The electrical connector 1 includes a connector body 10 and a limit pin 30 inserted on the connector body 10. The contact terminal 20 is inserted into the connector body 10 and is limited and fixed by the limit pin 30. The electrical connector 1 is used to connect the bipolar plate 2 of the fuel cell stack and the battery voltage monitoring controller (not shown in the figure and connected to the electrical connector 1 through a wire 11). Mainly refer to Figure 3 , the contact terminal 20 includes a terminal body 100, an abutting section 200 and a connecting section 300. The terminal body 100 has a first end and a second end arranged oppositely; the abutting section 200 is connected to the first end of the terminal body 100, and the abutting section 200 is provided with an elastic abutting portion 210 for abutting against the bipolar plate 2 of the fuel cell stack; the connecting section 300 is connected to the second end of the terminal body 100 for connecting to the battery voltage monitoring controller through the wire 11.

[0057] In this embodiment, the contact terminal 20 can be made of a metal material with good electrical conductivity and high connection strength, which is not limited herein. The whole of the contact terminal 20 can be arranged in a long strip shape for convenient assembly, and its shape is not limited herein either.

[0058] The elastic abutting portion 210 can be a metal elastic sheet integrally formed with the abutting section 200 and arranged in an arc shape, or an elastic metal piece fixed to the abutting section 200 by welding or other means, which is not limited herein.

[0059] It should be noted that the terminal body 100, the abutting section 200 and the connecting section 300 of the contact terminal 20 can be an integrally formed metal piece, or multiple split metal pieces connected and fixed together by welding or other means, which is not limited herein.

[0060] It can be understood that in the present invention, the terminal body 100 of the contact terminal 20 is provided with a first end and a second end arranged oppositely, the abutting section 200 is connected to the first end of the terminal body 100, the abutting section 200 is provided with an elastic abutting portion 210 for abutting against the bipolar plate 2 of the fuel cell stack, and the connecting section 300 is connected to the second end of the terminal body 100 for connecting to the battery voltage monitoring controller through a wire 11. By providing the elastic abutting portion 210, the contact area between the contact terminal 20 and the bipolar plate 2 of the fuel cell stack is increased, so that the stability of the contact terminal 20 is improved, and further the connection stability of the electrical connector 1 is improved.

[0061] In order to increase the contact area between the contact terminal 20 and the bipolar plate 2 of the fuel cell stack and further enhance the connection strength therebetween, in one embodiment, please refer to Figure 3 , a through hole 200a is provided on the abutting section 200, and an extension arm 201 extends along the direction away from the connecting section 300 on the hole wall of the through hole 200a close to the terminal body 100 to form the above-mentioned elastic abutting portion 210. The extension arm 201 is arranged in a circular arc shape, and the extension arm 201 is used for abutting against the side wall of the bipolar plate 2 of the fuel cell stack.

[0062] Refer to Figure 3 , in one embodiment, one end of the connecting section 300 facing away from the terminal body 100 is provided with an insertion port 300a for inserting the wire 11 connected to the battery voltage monitoring controller. With such a setting, the connection efficiency between the contact terminal 20 and the wire 11 is facilitated.

[0063] In this embodiment, the number of the insertion ports 300a can be one or more, or it can be that an insertion channel extends for a certain distance and then bifurcates into two or more channels for convenient wiring. In addition, after the two conductors of the wire 11 are respectively inserted into the two insertion ports 300a, they can be fixed by welding (such as Figure 3As shown, an avoidance opening can be formed on one side of the tube wall of the insertion channel to facilitate wire threading and wire soldering, etc., so as to prevent the wire 11 from falling off, and further improve the connection strength between the contact terminal 20 and the wire 11.

[0064] Further, in order to prevent the contact terminal 20 from moving within the electrical connector 1, in some embodiments, referring to Figure 3 , the connecting section 300 of the contact terminal 20 is provided with an extension arm 301. The extension arm 301 extends in a bent manner from one side of the connecting section 300 in the direction of its thickness. The extension arm 301 is used to abut against the limit pin 30 to limit the movement of the contact terminal 20 along its length direction. With such a setting, the assembly stability of the contact terminal 20 is greatly improved.

[0065] The present invention also provides an electrical connector 1, referring to Figure 1 and Figure 2 , this electrical connector 1 is used to connect the fuel cell bipolar plate 2 and the battery voltage monitoring controller (not shown in the figure, connected to the electrical connector 1 through the wire 11). The electrical connector 1 includes a connector body 10, a plurality of contact terminals 20 and limit pins 30. Combining Figures 4 to 7 , the connector body 10 is provided with a plurality of jacks 10a. The jacks 10a have a first side and a second side arranged oppositely. The first side of the jack 10a is for the fuel cell bipolar plate 2 to be inserted and fixed, and the second side of the jack 10a is for the wire 11 connecting the battery voltage monitoring controller to be inserted; the plurality of contact terminals 20 are the contact terminals 20 as described above, and the plurality of contact terminals 20 are inserted into the plurality of jacks 10a one by one; the abutting section 200 of the contact terminal 20 is used to abut against the fuel cell bipolar plate 2; the connecting section 300 of the contact terminal 20 is used to be connected to the battery voltage monitoring controller through the wire 11; the number of the limit pins 30 can be two, and the two limit pins 30 are respectively inserted into the connector body 10 and extend into the jacks 10a to abut against the contact terminals 20 to limit the movement of the contact terminals 20 along their length directions.

[0066] Among them, the connector body 10 can be a plastic part manufactured by integral molding or assembled by a plurality of plastic parts. The connector body 10 forms the above-mentioned plurality of jacks 10a. The plurality of jacks 10a can be arranged in one row or multiple rows. The number of jacks 10a in each row can be one or more for the plurality of contact terminals 20 to be embedded. The jacks 10a can be through holes. One end is for the contact terminal 20 and the wire 11 connected thereto to be inserted, and the other end can be for the connection end of the fuel cell bipolar plate 2 to be inserted so as to elastically abut against the abutting portion 210 of the contact terminal 20 for conduction.

[0067] In this embodiment, the contact terminal 20 can be a metal conductor with certain electrical conductivity and can be arranged in a strip shape. The contact terminal 20 is embedded and fixed in the jack 10a.

[0068] In this embodiment, the bipolar plate 2 of the stack can be inserted and fixed on the connector body 10 through the limit pin 30. The limit pin 30 can be a common plug pin or a specific structure designed according to the shapes of the connector body 10 and the contact terminal 20, etc. to meet the connection strength requirements. The material of the limit pin 30 can be plastic or a component of metal and plastic. Here, the specific structure and material of the limit pin 30 are not limited.

[0069] It should be noted that the specifications of the jacks 10a of the connector body 10 can be designed according to actual needs. It can be designed that multiple bipolar plates 2 of the stack are inserted and fixed in each jack 10a. For the convenience of assembly, usually, multiple bipolar plates 2 can be inserted into one jack 10a.

[0070] It can be understood that in the technical solution of the present invention, since the electrical connector 1 includes a connector body 10, a plurality of contact terminals 20 and a limit pin 30, the connector body 10 is provided with a plurality of jacks 10a. The jacks 10a have a first side and a second side arranged opposite to each other. The first side of the jack 10a is for the bipolar plate 2 of the stack to be inserted and fixed, and the second side of the jack 10a is for the wire 11 connecting the battery voltage monitoring controller to be inserted; the plurality of contact terminals 20 are the contact terminals 20 as described above, and the plurality of contact terminals 20 are inserted into the plurality of jacks 10a one by one; the abutting section 200 of the contact terminal 20 is used to abut against the bipolar plate 2 of the stack; the connecting section 300 of the contact terminal 20 is used to be connected to the battery voltage monitoring controller through the wire 11; the limit pin 30 is inserted on the connector body 10 and extends into the jack 10a to abut against the contact terminal 20, so as to limit the movement of the contact terminal 20 along its length direction, improve the stability of the contact terminal 20, and enhance the connection stability of the electrical connector 1.

[0071] In order to improve the stability of the contact terminal 20 and prevent it from displacing and shaking in the jack 10a and affecting signal transmission, in one embodiment, combined with Figures 5 to 7 , one end of the connector body 10 facing away from the bipolar plate 2 of the stack is provided with a first limit groove 10b, and the first limit groove 10b is arranged close to the jack 10a; the limit pin 30 is inserted into the first limit groove 10b and the jack 10a and abuts against the elastic abutting portion 210 of the contact terminal 20.

[0072] Furthermore, referring to Figure 3 , the contact terminal 20 is provided with an extension arm 301, combined with Figures 5 to 7, the limit pin 30 includes a limit pin body 31 and a plurality of stop arms 32, clamping arms 33 and limit arms 34 provided on one side of the limit pin body 31; the plurality of stop arms 32 are inserted into the plurality of jacks 10a one by one and are in one-to-one abutment with the extension arms 301 of the plurality of contact terminals 20; the first limit groove 10b includes a first sub-slot 10b1 and a second sub-slot 10b2, the number of limit arms 34 is two, and the two limit arms 34 are respectively inserted into the first sub-slot 10b1 and the second sub-slot 10b2 and are respectively attached to the two side walls of the adjacent sides of the first sub-slot 10b1 and the second sub-slot 10b2 to limit the limit pin 30 from moving in the width direction of the connector body 10; the number of clamping arms 33 is two, the two clamping arms 33 are respectively arranged on both sides of the two limit arms 34 and are respectively inserted into the first sub-slot 10b1 and the second sub-slot 10b2, a hook is provided at the end of the clamping arm 33, and slots corresponding to the hooks are provided on the groove walls in the first sub-slot 10b1 and the second sub-slot 10b2, and the hooks of the two clamping arms 33 are respectively snapped into the slots in the first sub-slot 10b1 and the second sub-slot 10b2 to limit the limit pin 30 from moving in the length direction of the connector body 10.

[0073] In one embodiment, referring to Figure 2 , the bipolar plate 2 of the stack has an embedding arm, and a back-off groove 21a is provided on the embedding arm; referring to Figures 5 to 7 , the electrical connector 1 further includes a stop pin 40, and a second limit groove 20b is further formed on the connector body 10. The stop pin 40 is inserted into the second limit groove 20b and extends into the back-off grooves 21a of the plurality of bipolar plates 2 of the stack to limit the bipolar plates 2 of the stack from moving in the direction away from the contact terminals 20. With such a setting, it is convenient to connect the bipolar plates 2 of the stack with the electrical connector 1, improves the stability of the bipolar plates of the stack, and enhances the connection stability.

[0074] In order to prevent the stop pin 40 from detaching from the connector body 10 to improve its connection strength, in one embodiment, mainly referring to Figure 6 , the stop pin 40 may include a first side plate 41 and a second side plate 42 connected to the first side plate 41. The second side plate 42 is inserted into the back-off groove 21a from the second limit groove 20b, and the first side plate 41 covers the notch of the second limit groove 20b; a convex portion 401 is protruded on the side wall of the stop pin 40, and a positioning hole is formed at the position corresponding to the convex portion 401 in the second limit groove 20b, and the convex portion 401 is snapped into the positioning hole to limit the stop pin 40 from moving in the length direction and width direction of the connector body 10.

[0075] The present invention further provides a controller assembly, which includes a battery voltage monitoring controller (not shown in the figure), an electrical connector 1, and a stack bipolar plate 2. The specific structure of the electrical connector 1 refers to the above-mentioned embodiments. Since the controller assembly provided by the present invention includes all the solutions of all the embodiments of the above-mentioned electrical connector 1, it has at least the same technical effects as the electrical connector 1, and will not be elaborated one by one here.

[0076] In this embodiment, with reference to Figures 1 to 3 , the connecting section 300 of the contact terminal 20 of the electrical connector 1 is connected to the battery voltage monitoring controller through a wire 11; the number of the stack bipolar plates 2 is multiple, and each stack bipolar plate 2 has an embedding arm, and a retaining groove 21a is provided on the embedding arm. Combining Figures 4 to 7 , the embedding arms of the multiple stack bipolar plates 2 are inserted into the multiple jacks 10a of the electrical connector 1 one by one, the side wall of the embedding arm abuts against the contact terminal 20 of the electrical connector 1, and the positioning pin 40 of the electrical connector 1 is inserted into the second limiting groove 20b of the electrical connector 1 and extends into the retaining groove 21a to limit the movement of the stack bipolar plate 2.

[0077] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An electrical connector for connecting a bipolar plate of an electric stack to a battery voltage monitoring controller, characterized in that, The electrical connector includes: A connector body, which is provided with a plurality of jacks. The jacks have a first side and a second side that are oppositely arranged. The first side of the jack is for the insertion and fixation of the bipolar plate of the stack, and the second side of the jack is for the insertion of a wire connecting the battery voltage monitoring controller; A plurality of contact terminals, and the plurality of contact terminals are inserted into the plurality of jacks one by one; the abutting section of the contact terminal is for abutting against the bipolar plate of the stack; the connecting section of the contact terminal is for being connected to the battery voltage monitoring controller through a wire; and A limit pin, which is inserted into the connector body and extends into the jack to abut against the contact terminal to limit the movement of the contact terminal along its length direction; One end of the connector body facing away from the bipolar plate of the stack is provided with a first limit groove, and the first limit groove is arranged close to the jack; The contact terminal is provided with an extension arm, and the limit pin includes a limit pin body and a plurality of stop arms, clamping arms and limit arms arranged on one side of the limit pin body; The plurality of stop arms are inserted into the plurality of jacks one by one and abut against the extension arms of the plurality of contact terminals one by one; The first limit groove includes a first sub-slot and a second sub-slot. The number of the limit arms is two, and the two limit arms are respectively inserted into the first sub-slot and the second sub-slot and are respectively attached to the two side walls of the adjacent side of the first sub-slot and the second sub-slot to limit the movement of the limit pin along the width direction of the connector body; The number of the clamping arms is two, and the two clamping arms are respectively arranged on both sides of the two limit arms and are respectively inserted into the first sub-slot and the second sub-slot. The end of the clamping arm is provided with a hook, and the slot walls in the first sub-slot and the second sub-slot are provided with slots corresponding to the position of the hook. The hooks of the two clamping arms are respectively snapped into the slots in the first sub-slot and the second sub-slot to limit the movement of the limit pin along the length direction of the connector body.

2. The electrical connector according to claim 1, wherein The contact terminal includes: A terminal body, which has a first end and a second end that are oppositely arranged; An abutting section, which is connected to the first end of the terminal body. The abutting section is provided with an elastic abutting part for abutting against the bipolar plate of the stack; and A connecting section, which is connected to the second end of the terminal body for being connected to the battery voltage monitoring controller through a wire.

3. The electrical connector according to claim 1, wherein, A through hole is provided on the abutting section. The hole wall on one side of the through hole close to the terminal body extends in a direction away from the connecting section to form the elastic abutting part. The extension arm is arranged in an arc shape, and the extension arm is for abutting against the side wall of the bipolar plate of the stack.

4. The electrical connector according to claim 3, wherein, One end of the connecting section facing away from the terminal body is provided with an insertion port for the insertion of a wire connecting to the battery voltage monitoring controller.

5. The electrical connector according to claim 4, wherein, The connecting section of the contact terminal is provided with an extension arm, and the extension arm bends and extends from one side of the connecting section in its thickness direction. The extension arm is for abutting against the limit pin to limit the movement of the contact terminal along its length direction.

6. The electrical connector according to claim 1, characterized in that, The limit pin is inserted into the first limit groove and the jack and abuts against the elastic abutting part of the contact terminal.

7. The electrical connector according to claim 1, wherein The fuel cell stack bipolar plate has an embedding arm, and a back-off prevention groove is provided on the embedding arm; The electrical connector further includes a stop pin, and a second limiting groove is further formed on the connector body. The stop pin is inserted into the second limiting groove and extends into the back-off prevention grooves of a plurality of the fuel cell stack bipolar plates to limit the fuel cell stack bipolar plates from moving in a direction away from the contact terminal.

8. The electrical connector according to claim 7, wherein, The stop pin includes a first side plate and a second side plate connected to the first side plate. The second side plate is inserted into the back-off prevention groove from the second limiting groove, and the first side plate covers the notch of the second limiting groove; A convex portion is protruded on the side wall of the stop pin, and a positioning hole is formed at a position corresponding to the convex portion in the second limiting groove. The convex portion is snapped into the positioning hole to limit the stop pin from moving in the length direction and the width direction of the connector body.

9. A controller component, characterized in that, The controller assembly includes: A battery voltage monitoring controller; An electrical connector, which is the electrical connector according to any one of claims 1 to 8. A connection section of the contact terminal of the electrical connector is connected to the battery voltage monitoring controller through a wire; and Fuel cell stack bipolar plates, and the number of the fuel cell stack bipolar plates is multiple. Each of the fuel cell stack bipolar plates has an embedding arm, and a back-off prevention groove is provided on the embedding arm. The embedding arms of the multiple fuel cell stack bipolar plates are inserted into the multiple jacks of the electrical connector one by one. The embedding arm abuts against the contact terminal of the electrical connector, and the stop pin of the electrical connector is inserted into the second limiting groove of the electrical connector and extends into the back-off prevention groove to limit the movement of the fuel cell stack bipolar plates.

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