Connector for power battery FPC circuit

Abstract

The utility model discloses a connector for a power battery FPC (flexible printed circuit), which comprises a connector main body, metal pins are arranged at the closed end of the connector main body, and two adjacent metal pins are not communicated with each other; the sealing silica gel piece is fixedly connected with the opening end of the connector main body, and the sealing silica gel piece is provided with a plurality of first FPC wire holes corresponding to the positions of the metal pins; the connector buckle is fixedly arranged outside the connector body in a sleeving mode, the sealing silica gel piece abuts against the inner wall of the bottom of the connector buckle, and a second FPC wire hole corresponding to the first FPC wire hole is formed in the bottom of the connector buckle. The conductor of the FPC circuit passes through the second FPC wire hole, the conductor of the FPC circuit in the first FPC wire hole can be in contact conduction with the corresponding metal pin, and the limiting device can be clamped at a fixed position between the connector main body and the sealing silica gel piece. The connector provided by the utility model is convenient to mount, dismount and maintain, and has good sealing performance.

Description

Technical Field

[0001] The utility model relates to the field of connectors used for FPC circuit connection, in particular to a connector used for a power battery FPC circuit. Background Art

[0002] With the development of new energy vehicles in my country, in order to improve the driving range, the traditional battery management system (BMS) wiring harness is gradually replaced by flexible printed circuit (FPC) circuits due to its complex circuits and large size and difficulty in installation; the existing FPC connector structures are all consumer-grade and industrial-grade, and have problems such as easy loosening and non-moisture-proof, and are not suitable for vehicle-mounted use. Therefore, the existing FPC circuits are all welded on the printed circuit board (PCBA). When one circuit in the circuit is damaged, the FPC and PCBA need to be disassembled and scrapped as a whole, which makes maintenance difficult and the maintenance cost high. Utility Model Content

[0003] The purpose of the utility model is to provide a connector for a power battery FPC circuit to solve the problems existing in the above-mentioned prior art, which is easy to install and disassemble, convenient to maintain and has good sealing performance.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a connector for a power battery FPC circuit, comprising:

[0006] The connector body has a plurality of metal pins inserted into the closed end thereof, and no two adjacent metal pins are connected;

[0007] A sealing silicone member, which is used to be fixedly connected to the open end of the connector body, and the sealing silicone member is provided with a plurality of first FPC wire holes corresponding to the positions of the metal pins;

[0008] A connector buckle, which is fixedly sleeved on the outside of the connector body, and the sealing silicone member abuts against the inner wall of the bottom of the connector buckle, and the bottom of the connector buckle is provided with a second FPC wire hole corresponding to the first FPC wire hole;

[0009] The FPC circuit has a plurality of conductors separated from each other, and the conductors of the FPC circuit passing through the second FPC wire hole and the first FPC wire hole can be in contact with and connected to the corresponding metal pins, and the limiting device on the side wall of the FPC circuit can be snapped into a fixed position formed between the connector body and the sealing silicone member.

[0010] Optionally, the connector body is made of plastic, and the metal pins are integrally injection-molded with the connector body; two adjacent metal pins are separated by a plastic partition layer.

[0011] Optionally, the metal pin includes an integrally formed pin spring and an exposed pin, and the pin spring is located inside the connector and is used for contacting and conducting with a corresponding conductor.

[0012] Optionally, the pin spring piece is a special-shaped spring piece, including a symmetrically arranged upper spring piece and a lower spring piece, and the space between the upper spring piece and the lower spring piece forms a contact connection point; one end of the conductor can extend between the upper spring piece and the lower spring piece, and contact and conduct with the upper spring piece and the lower spring piece at the contact connection point.

[0013] Optionally, the sealing silicone component includes a silicone component body, a boss is provided at one end of the silicone component body, and an inwardly concave boss seat is provided at the open end of the connector body. The boss can be snapped into the boss seat, and the fixed position is formed between the end of the boss and the bottom of the boss seat.

[0014] Optionally, the connector buckle includes a connector buckle body of a rectangular plate structure, two buckle ears are symmetrically provided on the connector buckle body, and the inner walls of the buckle ears are in contact and connected with the outer wall of the connector body on the same side; a square hole is provided on the buckle ear, and undercuts are symmetrically provided on the two outer walls of the connector body connected to the buckle ears, and the undercuts can be snapped into the square holes on the same side; the connector body is provided with the second FPC wire hole.

[0015] Optionally, a plurality of snap tongues are fixedly provided on the inner side of the connector snap body, a plurality of snap tongue through holes are opened on the sealing silicone member, and the snap tongues can be inserted into corresponding snap tongue through holes.

[0016] Optionally, the FPC circuit includes upper and lower insulating layers, a plurality of the conductors are arranged in the upper and lower insulating layers, and the limiting device is fixedly arranged on the two side walls of the upper and lower insulating layers; the ends of the conductors are connected with gold fingers, and the ends of the upper and lower insulating layers are provided with a plurality of U-shaped openings, the U-shaped openings are located between two adjacent conductors, and the U-shaped openings can separate two adjacent gold fingers to form corresponding connecting plugs; the connecting plugs can contact and conduct with the corresponding metal pins.

[0017] Optionally, an insulating gasket is fixedly provided at the bottom of the upper and lower insulating layers, and the insulating gasket is located near one end of the U-shaped opening; the limiting device is a convex locking structure fixedly provided on the two side walls of the upper and lower insulating layers.

[0018] The utility model also provides a method for installing a connector for a power battery FPC circuit, comprising the following steps:

[0019] Step 1: Assemble the connector buckle body and the sealing silicone component, and insert the buckle tongue into the buckle tongue through hole;

[0020] Step 2: insert the FPC circuit into the second FPC wire hole and the first FPC wire hole in sequence, and set the limit device in front of the boss;

[0021] Step three, insert the boss of the sealing silicone part into the boss seat at the open end of the connector body, insert the snap ears into the outside of the side wall of the connector body, snap them into the square hole, and connect the gold finger and the pin spring at the contact connection point.

[0022] Compared with the prior art, the utility model has achieved the following technical effects:

[0023] The utility model connects the FPC circuit to the connector through a combination of a connector body, a sealing silicone component, and a connector buckle, seals the connection through the sealing silicone component, and the connector buckle fixes the sealing silicone component, the FPC circuit contact point, and the connector shrapnel. Through the combination of the three, the metal contacts of the connector are firmly and reliably in contact, shockproof and not loose, and sealed, waterproof and moisture-proof. The FPC circuit assembly is more convenient to connect to the PCBA, easy to install and easy to disassemble, and reaches the vehicle-mounted vehicle grade. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the main structure of the connector of the utility model;

[0026] Figure 2 This is a schematic diagram of one side of the connector body of the utility model;

[0027] Figure 3 This is a schematic cross-sectional view of the connector body of the utility model;

[0028] Figure 4 This is a schematic diagram of the sealing silicone component of the utility model;

[0029] Figure 5 This is a cross-sectional schematic diagram of the sealing silicone component of the utility model;

[0030] Figure 6 This is a schematic side cross-sectional view of the sealing silicone component of the utility model;

[0031] Figure 7 This is a schematic diagram of the buckle structure of the connector of the utility model;

[0032] Figure 8 This is a side view of the connector buckle of the utility model;

[0033] Fig. 9 This is a schematic cross-sectional view of the buckle of the connector of the utility model;

[0034] Fig.10 This is a side sectional view of the connector buckle of the utility model;

[0035] Fig.11 This is a schematic diagram of the overall assembly of the connector for the power battery FPC circuit of the utility model;

[0036] Fig.12 This is a schematic diagram of the FPC circuit of the utility model;

[0037] Fig.13 This is a schematic diagram of the FPC circuit of the utility model from another angle;

[0038] Fig.14 This is a schematic diagram of the connection between the FPC circuit and the connector of the utility model;

[0039] Fig.15 for Fig.14 Side view of

[0040] Fig.16 for Fig.14 sectional view of

[0041] Fig.17 This is a cross-sectional view from another angle after the FPC circuit of the utility model is connected to the connector.

[0042] Explanation of the reference numerals: 1-connector body; 2-undercut; 3-metal pin; 4-pin spring; 5-plastic partition layer; 6-upper spring; 7-lower spring; 8-exposed pin; 9-silicone body; 10-first FPC wire hole; 11-snap tongue through hole; 12-connector snap body; 13-snap ear; 14-square hole; 15-snap tongue; 16-FPC circuit; 17-insulating gasket; 18-conductor; 19-convex snap-in structure; 20-gold finger; 21-upper and lower insulation layers; 22-U-shaped mouth; 23-contact connection; 24-boss; 25-boss seat; 26-fixing position; 27-second FPC wire hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] The purpose of the utility model is to provide a connector for a power battery FPC circuit to solve the problems existing in the above-mentioned prior art, which is easy to install and disassemble, convenient to maintain and has good sealing performance.

[0045] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] refer to Figure 1 to Figure 17 As shown, the utility model provides a connector for a power battery FPC circuit, including a connector body 1, a sealing silicone member and a connector buckle, the connector buckle includes a connector buckle body 12, the connector body 1 and the connector buckle body 12 are made of hydrolysis-resistant plastic, and the sealing silicone member is made of silicone rubber or fluororubber; a plurality of metal pins 3 are inserted into the closed end of the connector body 1, and the metal pins 3 are integrally injection-molded with the connector body 1; two adjacent metal pins 3 are separated by a compartment formed by a plastic partition layer 5, and a single independent compartment docks different pin positions of the circuit. This embodiment is described using three docking pin positions as a case, and the number of docking pin positions and their spacing are not limited. The number of pin positions (connector holes) can be increased or decreased according to application needs; the sealing silicone member is used to be fixedly connected to the open end of the connector body 1, and the sealing silicone The rubber part is provided with a plurality of first FPC wire holes 10 corresponding to the positions of the metal pins 3; when the sealing silicone member is assembled with the connector body 1, the FPC circuit 16, the connector buckle and the internal compartment of the connector body 1 are sealed by extrusion; the connector buckle is fixedly sleeved on the outside of the connector body 1, and the sealing silicone member abuts against the inner wall of the bottom of the connector buckle, and a second FPC wire hole 27 corresponding to the first FPC wire hole 10 is provided at the bottom of the connector buckle to facilitate the passage of the FPC circuit 16; a plurality of conductors 18 separated from each other are provided in the FPC circuit 16 of the power battery, and the conductors 18 of the FPC circuit 16 passing through the second FPC wire hole 27 and the first FPC wire hole 10 can be in contact with and conduct with the corresponding metal pins 3, and the limiting device on the side wall of the FPC circuit 16 can be snapped into the fixed position 26 formed between the connector body 1 and the sealing silicone member.

[0047] In one of the preferred embodiments, the metal pin 3 includes an integrally formed pin spring 4 and an exposed pin 8. The pin spring 4 is located inside the connector and is a special-shaped spring, including a symmetrically arranged upper spring 6 and a lower spring 7. The space between the upper spring 6 and the lower spring 7 forms a contact connection 23; one end of the conductor 18 can extend between the upper spring 6 and the lower spring 7, and contact and conduct with the upper spring 6 and the lower spring 7 at the contact connection 23. The exposed pin 8 is used to connect and conduct with the PCBA.

[0048] In order to achieve a better sealing effect, in this embodiment, the sealing silicone component includes a silicone component body 9, a boss 24 is provided at one end of the silicone component body 9, and a concave boss seat 25 is provided at the open end of the connector body 1. The boss 24 can be snapped into the boss seat 25, which is similar to the matching structure of a bottle mouth and a bottle stopper, thereby improving the sealing performance. A fixed position 26 is formed in the gap between the end of the boss 24 and the bottom of the boss seat 25, which is convenient for snapping and limiting the limiting device on the side wall of the FPC circuit 16.

[0049] In order to prevent the sealing silicone from being exposed to the outside and to further improve its sealing performance, the connector buckle adopts a connector buckle body 12 of a rectangular plate structure, which can abut against the outside of the sealing silicone. Two buckle ears 13 are symmetrically arranged on the connector buckle body 12, and the inner side walls of the buckle ears 13 are in contact with the outer side wall of the connector body 1 on the same side; a square hole 14 is provided on the buckle ears 13, and undercuts 2 are symmetrically provided on the two outer side walls of the connector body 1 connected to the buckle ears 13, and the undercuts 2 can be snapped into the square holes 14 on the same side, so that the connector buckle can be fixed on the connector body 1. A plurality of buckle tongues 15 are fixedly arranged on the inner side of the connector buckle body 12, and a plurality of buckle tongue through holes 11 are provided on the sealing silicone. The buckle tongues 15 can be inserted into the corresponding buckle tongue through holes 11. After the gold finger 20 contacts the pin spring 4 on the connector body 1, it is pushed up by the buckle tongue 15, so that it fits tightly and cannot be loosened.

[0050] In order to facilitate plug-in and circuit conduction, the FPC circuit 16 is provided with upper and lower insulating layers 21, and multiple conductors 18 are provided in the upper and lower insulating layers 21. The limit devices are fixedly arranged on the two side walls of the upper and lower insulating layers 21; the ends of the conductors 18 are connected with rectangular, circular or other shaped gold fingers 20, and the surface of the gold fingers 20 is electroplated, which is corrosion-resistant, highly conductive and friction-resistant. Multiple U-shaped openings 22 are opened at the ends of the upper and lower insulating layers 21. The U-shaped openings 22 are located between two adjacent conductors 18. The U-shaped openings 22 can separate two adjacent gold fingers 20 to form corresponding connecting plugs. The U-shaped openings 22 are used to avoid the partitions in the connector so that the FPC circuit can be inserted into the connector; the connecting plugs can contact and conduct with the corresponding metal pins 3. An insulating gasket 17 is fixedly provided at the bottom of the upper and lower insulating layers 21. The insulating gasket 17 is located near one end of the U-shaped opening 22 and is set starting from the position of the limiting device. The thickness is 0.3 to 0.8 mm or above. The limiting device is a convex locking structure 19 fixedly provided on the two side walls of the upper and lower insulating layers 21.

[0051] The utility model also provides a method for installing a connector for a power battery FPC circuit, including: assembling the connector buckle body 12 with the sealing silicone member, inserting the buckle tongue 15 into the buckle tongue through hole 11; inserting the FPC circuit 16 into the second FPC wire hole 27 and the first FPC wire hole 10 in sequence, and setting a limit device in front of the boss 24; inserting the boss 24 of the sealing silicone member into the boss seat 25 at the open end of the connector body 1, inserting the buckle ear 13 into the outside of the side wall of the connector body 1, and snapping the buckle 2 into the square hole 14. The gold finger 20 is connected with the pin spring 4 at the contact connection 23 to complete the assembly. The connection is sealed by the sealing silicone member, and the connector buckle fixes the sealing silicone member, the FPC circuit contact point and the connector spring. The combination of the three achieves the effect of the connector metal contact being firmly and reliably contacted, shockproof and not loose, and sealed, waterproof and moisture-proof.

[0052] In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A connector for a power battery FPC circuit, characterized in that: include: The connector body has a plurality of metal pins inserted into the closed end thereof, and no two adjacent metal pins are connected; A sealing silicone member, which is used to be fixedly connected to the open end of the connector body, and the sealing silicone member is provided with a plurality of first FPC wire holes corresponding to the positions of the metal pins; A connector buckle, which is fixedly sleeved on the outside of the connector body, and the sealing silicone member abuts against the inner wall of the bottom of the connector buckle, and the bottom of the connector buckle is provided with a second FPC wire hole corresponding to the first FPC wire hole; The FPC circuit has a plurality of conductors separated from each other, and the conductors of the FPC circuit passing through the second FPC wire hole and the first FPC wire hole can be in contact with and connected to the corresponding metal pins, and the limiting device on the side wall of the FPC circuit can be snapped into a fixed position formed between the connector body and the sealing silicone member.

2. The connector for a power battery FPC circuit according to claim 1, characterized in that: The connector body is made of plastic material, and the metal pins are integrally injection-molded with the connector body; two adjacent metal pins are separated by a plastic partition layer.

3. The connector for a power battery FPC circuit according to claim 1, characterized in that: The metal pin includes an integrally formed pin spring and an exposed pin. The pin spring is located inside the connector and is used for contacting and conducting with a corresponding conductor.

4. The connector for the power battery FPC circuit according to claim 3, characterized in that: The pin spring is a special-shaped spring, including a symmetrically arranged upper spring and a lower spring, and the space between the upper spring and the lower spring forms a contact connection; one end of the conductor can extend between the upper spring and the lower spring, and contact and conduct with the upper spring and the lower spring at the contact connection.

5. The connector for a power battery FPC circuit according to claim 1, characterized in that: The sealing silicone member comprises a silicone member body, one end of which is provided with a boss, the open end of the connector body is provided with a concave boss seat, the boss can be snapped into the boss seat, and the fixed position is formed between the end of the boss and the bottom of the boss seat.

6. The connector for a power battery FPC circuit according to claim 1, characterized in that: The connector buckle comprises a connector buckle body of a rectangular plate-like structure, two buckle ears are symmetrically arranged on the connector buckle body, and the inner side walls of the buckle ears are in contact and connected with the outer side wall of the connector body on the same side; a square hole is provided on the buckle ears, and undercuts are symmetrically provided on the two outer side walls of the connector body connected to the buckle ears, and the undercuts can be snapped into the square holes on the same side; the second FPC wire hole is provided on the connector body.

7. The connector for a power battery FPC circuit according to claim 6, characterized in that: A plurality of buckle tongues are fixedly provided on the inner side of the connector buckle body, a plurality of buckle tongue through holes are opened on the sealing silicone member, and the buckle tongues can be inserted into the corresponding buckle tongue through holes.

8. The connector for a power battery FPC circuit according to claim 1, characterized in that: The FPC circuit includes upper and lower insulating layers, a plurality of the conductors are arranged in the upper and lower insulating layers, and the limiting device is fixedly arranged on the two side walls of the upper and lower insulating layers; the ends of the conductors are connected with gold fingers, and the ends of the upper and lower insulating layers are provided with a plurality of U-shaped openings, the U-shaped openings are located between two adjacent conductors, and the U-shaped openings can separate two adjacent gold fingers to form corresponding connecting plugs; the connecting plugs can contact and conduct with the corresponding metal pins.

9. The connector for a power battery FPC circuit according to claim 8, characterized in that: An insulating gasket is fixedly provided at the bottom of the upper and lower insulating layers, and the insulating gasket is located near one end of the U-shaped opening; the limiting device is a convex locking structure fixedly provided on the two side walls of the upper and lower insulating layers.

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