Sensor structure

Abstract

The utility model discloses a sensor structure, which comprises a shell, a circuit board, a shunt and a switching pile head, the shell is provided with a mounting part; the circuit board is arranged on the shell; the diverter is mounted on the shell, electrically connected with the circuit board and provided with a connecting part, and the common gravity center of the diverter, the circuit board and the shell is located between the mounting part and the connecting part; the switching pile head is provided with a mounting end, a fixed end and a conduction end, the mounting end is connected to the mounting part, the fixed end is electrically connected with the conduction end and used for being fixed to the to-be-tested piece, and the conduction end is connected to the connecting part and transmits current to the shunt through the connecting part. According to the scheme, the anti-shearing capacity of the adapter pile head can be enhanced, the risk that the adapter pile head falls off from the flow divider is reduced, and then the risk that the sensor fails is reduced. And meanwhile, the point position where the mounting part is connected with the mounting end can play a role in positioning and fixing, so that the conduction end is welded and connected with the connecting part, and the convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors for storage batteries, and particularly relates to a sensor structure. Background Art

[0002] Storage batteries are widely used. With the development of their technology, the application fields will continue to expand, and the market space will become larger and larger. To monitor the working conditions of storage batteries in a timely manner, a shunt type current sensor is generally used to monitor the storage batteries in real time online, so as to facilitate the timely elimination of abnormal conditions of the storage batteries.

[0003] For example, Patent CN206975189U discloses an intelligent battery sensor, which is installed on the negative electrode post of an automotive storage battery by using a loop buckle type bracket; the sampling element uses a shunt to collect the current of the automotive storage battery; and the loop buckle type bracket, the grounding cable, the shunt and the housing are respectively welded by using large current bundles; a laser welded pin is used on the shunt to connect with the circuit board, and the circuit board is integrally injection molded to be not exposed.

[0004] However, there is only one eccentric contact point between the loop buckle type bracket (adapter stud) and the shunt component in this patent. Under the long-term vibration conditions of the whole vehicle use environment, the shear force received will be enhanced, which may cause the welding to fall off. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a sensor structure to solve the technical problem that in the shunt type sensor in the prior art, there is only one eccentric welding point between the adapter stud and the shunt, and the risk of falling off is relatively large.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a sensor structure, including:

[0008] A housing, provided with an installation part;

[0009] A circuit board, installed on the housing;

[0010] A shunt, installed on the housing, electrically connected to the circuit board, and provided with a connection part, and the common center of gravity of the shunt, the circuit board and the housing is located between the installation part and the connection part; and

[0011] An adapter stud, having an installation end, a fixed end and a conduction end, the installation end is connected to the installation part, the fixed end is electrically connected to the conduction end and is used for fixing to a test piece, and the conduction end is connected to the connection part and transmits current to the shunt through the connection part.

[0012] In some embodiments, the mounting portion is a spherical groove provided on the outer wall surface of the housing, and the connecting portion is the connecting terminal of the shunt;

[0013] The mounting end is provided with a spherical head, the spherical head is rotatably arranged in the spherical groove, and the conduction end is welded to the connecting terminal.

[0014] In some embodiments, one side of the spherical groove away from the connecting terminal is open, and the spherical head can enter the spherical groove from the open end of the spherical groove.

[0015] In some embodiments, the housing is further provided with a limiting groove communicating with the spherical groove, the limiting groove extends along the arrangement direction of the spherical groove and the connecting terminal, and its opening on the side away from the spherical groove is smaller than the inner diameter of the spherical groove;

[0016] The adapter pin further includes a connecting arm, the connecting arm is connected to the mounting end and the spherical head, and the connecting arm is placed in the limiting groove.

[0017] In some embodiments, the fixed end is provided with a fixed snap ring for fixing to the device under test;

[0018] The mounting end is further provided with a mounting seat, the connecting arm is connected to the mounting seat, the mounting seat is connected to the fixed snap ring, and its size is larger than that of the connecting arm.

[0019] In some embodiments, the fixed snap ring is provided with an opening to form two locking ends, and locking seats are provided on the two locking ends extending along the radial direction of the fixed snap ring, and through holes are provided on each locking seat along the direction away from the other locking seat;

[0020] The adapter pin further includes a locking bolt and a locking nut, the threaded sections of the locking bolt are respectively inserted through the two through holes, and the locking nut is screwed on the threaded sections of the locking bolt.

[0021] In some embodiments, the housing has a receiving cavity and is provided with a card slot along the arrangement direction of the mounting portion and the connecting portion;

[0022] The circuit board is placed in the receiving cavity, and the shunt is clamped in the card slot.

[0023] In some embodiments, the card slot is provided with a communication port communicating with the receiving cavity, and the circuit board is provided with a jack corresponding to the communication port;

[0024] The sensor structure further includes a conductive pin, one end of the conductive pin is connected to the shunt, the other end extends into the receiving cavity from the communication port, passes through the jack, and is electrically connected to the circuit board.

[0025] In some embodiments, a plurality of positioning ribs are provided on the inner wall of the accommodating cavity, and at least a plurality of the positioning ribs are located on two adjacent inner side walls of the accommodating cavity;

[0026] A plurality of positioning grooves are provided on the side wall of the circuit board corresponding to the plurality of positioning ribs, and each of the positioning grooves is for a corresponding positioning rib to pass through.

[0027] In some embodiments, the housing includes a base and a cover body. The cover body is detachably covered on the base and together with the base encloses to form the accommodating cavity. Among them, the card slot is provided on the base.

[0028] Compared with the prior art, in the sensor structure provided by the present utility model, the common center of the shunt, the circuit board and the housing is placed between the installation part and the connection part, and the installation part and the connection part are simultaneously connected to the adapter pile head, so that the centroid of the sensor main body is placed between the two connection points of it and the adapter pile head, enhancing the anti-shear ability of the adapter pile head and reducing the risk of the adapter pile head falling off from the shunt, thereby reducing the risk of sensor failure. At the same time, the connection point between the installation part and the installation end can also play a positioning and fixing role, facilitating the welding connection between the conduction end and the connection part and improving the convenience. Description of the Drawings

[0029] Figure 1 is a schematic diagram of the sensor structure provided by an embodiment of the present utility model;

[0030] Figure 2 is Figure 1 an exploded view of the sensor structure in;

[0031] Figure 3 is Figure 1 a top view of the sensor structure in;

[0032] Figure 4 is Figure 2 a schematic diagram of the base in;

[0033] Figure 5 is Figure 2 a schematic diagram of the adapter pile head in;

[0034] Figure 6 is Figure 3 a sectional view taken along the line A-A of the sensor structure in;

[0035] Figure 7 is Figure 3 a sectional view taken along the line A-A of the housing in;

[0036] Figure 8 is Figure 2 a schematic diagram of the shunt in;

[0037] Figure 9 is Figure 2 A schematic diagram of another angle of the middle base;

[0038] Figure 10 is Figure 2 A schematic diagram of the circuit board in the middle.

[0039] Explanation of reference numerals:

[0040] 1. Housing; 1a. Accommodating cavity; 1b. Card slot; 1c. Communication port; 11. Mounting portion; 11a. Spherical groove; 11b. Limiting groove; 12. Positioning rib; 121. Step surface; 13. Base; 14. Cover body; 2. Circuit board; 2a. Jack; 2b. Positioning groove; 3. Shunt; 31. Connecting portion; 311. Connecting terminal; 4. Adapter pile head; 41. Mounting end; 411. Spherical head; 412. Connecting arm; 413. Mounting seat; 42. Fixed end; 421. Fixed snap ring; 422. Locking end; 423. Locking seat; 423a. Through hole; 43. Conductive end; 5. Locking bolt; 6. Locking nut; 7. Conductive pin; 71. Support section; 72. Passing section. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0042] In order to solve the technical problem that in a shunt-type sensor, there is only one eccentric welding point between the adapter pile head and the shunt, and the risk of detachment is relatively high, the present utility model provides a sensor structure, which can enhance the anti-shearing ability of the adapter pile head, reduce the risk of detachment between the adapter pile head and the shunt, and further reduce the risk of sensor failure.

[0043] Please refer to Figures 1 to 3 , Figures 1 to 3 which is a schematic structural diagram of a sensor structure in an embodiment of the present utility model. The sensor structure includes a housing 1, a circuit board 2, a shunt 3 and an adapter pile head 4; the housing 1 is provided with a mounting portion 11; the circuit board 2 is mounted on the housing 1; the shunt 3 is mounted on the housing 1 and is electrically connected to the circuit board 2, and is provided with a connecting portion 31. The common center of gravity of the shunt 3, the circuit board 2 and the housing 1 is located between the mounting portion 11 and the connecting portion 31; the adapter pile head 4 has a mounting end 41, a fixed end 42 and a conductive end 43. The mounting end 41 is connected to the mounting portion 11, the fixed end 42 is electrically connected to the conductive end 43 and is used to be fixed to a test piece, and the conductive end 43 is connected to the connecting portion 31 and transmits current to the shunt 3 through the connecting portion 31.

[0044] In the sensor structure provided by the present utility model, the common center of the shunt 3, the circuit board 2 and the housing 1 is placed between the mounting portion 11 and the connecting portion 31, and the mounting portion 11 and the connecting portion 31 are simultaneously connected to the adapter stud 4, so that the centroid of the sensor body is positioned between the two connection points of it and the adapter stud 4, enhancing the anti-shear ability of the adapter stud 4 and reducing the risk of the adapter stud 4 falling off from the shunt 3, thereby reducing the risk of sensor failure. At the same time, the point where the mounting portion 11 is connected to the mounting end 41 can also play a positioning and fixing role, facilitating the welding connection between the conduction end 43 and the connecting portion 31 and improving the convenience.

[0045] In one embodiment, please refer to Figure 4 and Figure 5 , the mounting portion 11 is a spherical groove 11a provided on the outer wall surface of the housing 1, and the connecting portion 31 is the connecting terminal 311 of the shunt 3; the mounting end 41 is provided with a spherical head 411, and the spherical head 411 is rotatably arranged in the spherical groove 11a, and the conduction end 43 is welded to the connecting terminal 311.

[0046] In this embodiment, the spherical head 411 of the mounting end 41 is rotatably mounted in the spherical groove 11a of the housing 1 to facilitate adjusting the pose of the adapter stud 4 so that its conduction end 43 is butted against the connecting terminal 311, facilitating the centering and welding of the conduction end 43 to the connecting terminal 311 of the shunt 3 and improving the assembly convenience.

[0047] In one embodiment, one side of the spherical groove 11a away from the connecting terminal 311 is open, and the spherical head 411 can enter the spherical groove 11a from the open end of the spherical groove 11a.

[0048] In this embodiment, when assembling the adapter stud 4, first align the spherical head 411 with the open mouth of the spherical groove 11a, then slide the spherical head 411 in the direction close to the connecting terminal 311 until the spherical head 411 completely enters the spherical groove 11a, and then rotate the spherical head 411 so that the conduction end 43 of the adapter stud 4 abuts against the connecting terminal 311 of the shunt 3, and the operation is simple and convenient.

[0049] In one embodiment, the housing 1 is further provided with a limiting groove 11b communicating with the spherical groove 11a. The limiting groove 11b extends along the arrangement direction of the spherical groove 11a and the connecting terminal 311, and its side away from the spherical groove 11a is open. The opening size of the limiting groove 11b is smaller than the inner diameter of the spherical groove 11a; the adapter stud 4 further includes a connecting arm 412, and the connecting arm 412 is connected to the mounting end 41 and the spherical head 411, and the connecting arm 412 is placed in the limiting groove 11b.

[0050] In this embodiment, the limiting groove 11b and the connecting arm 412 are provided. On the one hand, it can effectively prevent the spherical head 411 from disengaging from the spherical groove 11a of the limiting groove 11b, improving the installation stability. On the other hand, it can limit the offset of the spherical head 411 in the width direction of the limiting groove 11b, ensuring the connection stability between the conduction end 43 and the connection terminal 311.

[0051] In one of the embodiments, the fixed end 42 is provided with a fixed snap ring 421 for fixing to the device under test. The mounting end 41 is further provided with a mounting seat 413. The connecting arm 412 is connected to the mounting seat 413. The mounting seat 413 is connected to the fixed snap ring 421, and its size is larger than that of the connecting arm 412.

[0052] In this embodiment, the size of the mounting seat 413 is set to be larger than that of the connecting arm 412 to form a reinforcing convex structure between the connecting arm 412 and the fixed snap ring 421, improving the connection strength between the connecting arm 412 and the fixed snap ring 421. It should be noted that the fixed snap ring 421 is used to be sleeved on the electrode of the battery.

[0053] In one of the embodiments, the fixed snap ring 421 is open-ended to form two locking ends 422. The two locking ends 422 are provided with locking seats 423 extending radially along the fixed snap ring 421. Each locking seat 423 is provided with a through hole 423a in the direction away from the other locking seat 423. The adapter stud 4 further includes a locking bolt 5 and a locking nut 6. The threaded sections of the locking bolt 5 are respectively passed through the two through holes 423a, and the locking nut 6 is screwed on the threaded section of the locking bolt 5.

[0054] In this embodiment, the fixed snap ring 421 is set to be open-ended and is equipped with a locking nut 6 and a locking bolt 5. Thus, the opening degree of the fixed snap ring 421 can be adjusted by tightening or loosening the locking nut 6 to improve its connection stability with the electrode and can be clamped on electrodes of various sizes, improving the practicability.

[0055] In one of the embodiments, please refer to Figure 6 and Figure 7 , the housing 1 has a receiving cavity 1a and is provided with a card slot 1b along the arrangement direction of the mounting portion 11 and the connecting portion 31. The circuit board 2 is placed in the receiving cavity 1a, and the shunt 3 is clamped in the card slot 1b.

[0056] In this embodiment, the circuit board 2 is placed in the receiving cavity 1a of the housing 1, and the shunt 3 is placed in the card slot 1b of the housing 1, improving the integration of the overall structure. It should be noted that in one embodiment, the shunt 3 and the housing 1 can be connected by injection molding, which can ensure the IP rating (the protection rating of the electrical equipment enclosure against foreign object intrusion) of the product.

[0057] In one of the embodiments, please refer to Figures 8 to 10, the card slot 1b is provided with a communication port 1c communicating with the accommodation cavity 1a, and the circuit board 2 is provided with a jack 2a corresponding to the communication port 1c; the sensor structure further includes a conductive pin 7, one end of the conductive pin 7 is connected to the shunt 3, and the other end extends into the accommodation cavity 1a from the communication port 1c, passes through the jack 2a, and is electrically connected to the circuit board 2.

[0058] In this embodiment, one end of the conductive pin 7 is connected to the shunt 3, and the other end passes through the jack 2a of the circuit board 2 and is electrically connected to the circuit board 2. On the one hand, it plays a positioning role for the circuit board 2, on the other hand, it improves the assembly convenience, and at the same time improves the structural integration. It should be noted that in this solution, the conductive pin 7 is a PIN pin and there are multiple ones. The circuit board 2 and the shunt 3 are respectively welded to the conductive pin 7. The circuit board 2 and the shunt 3 are welded through the PIN pin, which can effectively prevent problems such as the PIN pin falling off and signal loss caused by the vibration of the commercial vehicle during long-term driving on bumpy roads. The circuit board 2 communicates with the outside through the same welding connection method of the PIN pin. Specifically, after the circuit board 2 and the PIN pin are welded, glue is added for secondary fixing to enhance the protection of the circuit board 2.

[0059] In addition, in this embodiment, the conductive pin 7 includes a support section 71 and a penetrating section 72. The support section 71 is located on the side of the circuit board 2 close to the separator and is used to support the circuit board 2 so that the circuit board 2 is spaced from the inner wall of the accommodation cavity 1a close to the separator, while the penetrating section 72 passes through the jack 2a of the circuit board 2 and is electrically connected to the circuit board 2.

[0060] In one embodiment, a plurality of positioning ribs 12 are provided on the inner wall of the accommodation cavity 1a, and the plurality of positioning ribs 12 are at least located on two adjacent inner side walls of the accommodation cavity 1a; a plurality of positioning grooves 2b are provided on the side wall of the circuit board 2 corresponding to the plurality of positioning ribs 12, and each positioning groove 2b is for the corresponding positioning rib 12 to pass through.

[0061] In this embodiment, the positioning ribs 12 are provided on the side wall of the accommodation cavity 1a, and the positioning grooves 2b are provided on the circuit board 2 so that after the positioning ribs 12 and the positioning grooves 2b are aligned and the circuit board 2 is lowered, the conductive pins 7 can be aligned and extend into the jacks 2a of the circuit board 2, improving the assembly convenience. Specifically, there are two positioning ribs 12 and two positioning grooves 2b respectively. In addition, the positioning rib 12 is provided with a step surface 121 corresponding to the support section 71 for supporting the circuit board 2.

[0062] In one embodiment, the housing 1 includes a base 13 and a cover 14. The cover 14 is detachably covered on the base 13 and together with the base 13 encloses to form the accommodation cavity 1a, wherein the card slot 1b is provided on the base 13.

[0063] In this embodiment, the base 13 and the cover 14 are detachably connected to facilitate replacement and maintenance of the circuit board 2. It should be noted that in this solution, the base 13 and the cover 14 are fastened together by interference fit and can be disassembled when external force is applied, resulting in a simple and reliable structure.

[0064] In order to better understand the present invention, the following Figures 1 to 10 The technical solution of the utility model is described in detail:

[0065] In this embodiment, the sensor structure consists of an adapter 4, a diverter 3, a PCB, and a housing 1. The diverter 3 is connected to the housing 1 via injection molding to ensure the product's IP rating. The PCB is positioned via two positioning ribs 12 on the side of the housing 1. Steps are provided at the bottom of the two ribs to horizontally position and support the PCB. The PCB and diverter 3 are soldered together using pins, effectively preventing pin loss and signal loss caused by vibrations on bumpy roads during long-term commercial vehicle driving. The PCB also communicates with external devices via pin welding. After soldering, glue is added to secure the PCB to the pins for a second time, enhancing protection.

[0066] The connection between the adapter head 4 and the diverter 3 is positioned on one side by a hinged structure and fixed on the other side by copper bar welding. The hinged structure consists of two parts: the adapter head 4 with a spherical protrusion and the shell 1 with a spherical hollow. The adapter head 4 with a spherical protrusion has a protruding portion consisting of a spherical head 411, a connecting arm 412, and a square mounting seat 413. The spherical head can rotate and slide within the cavity of the plastic shell. The diameter of the connecting arm 412 must be smaller than the diameter of the spherical head to prevent the spherical head from escaping from the shell 1. The connecting arm 412 is set to a cylindrical shape to facilitate the rotation of the shell 1 around the central axis of the cylinder. The square mounting seat 413 at the bottom strengthens the connection strength between the connecting arm 412 and the fixing ring 421.

[0067] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A sensor structure, characterized in that, Comprising: A housing provided with a mounting portion; A circuit board mounted on the housing; A shunt mounted on the housing, electrically connected to the circuit board, and provided with a connection portion, and the common center of gravity of the shunt, the circuit board and the housing is located between the mounting portion and the connection portion; And An adapter stud having a mounting end, a fixed end and a conduction end, the mounting end being connected to the mounting portion, the fixed end being electrically connected to the conduction end and being used for fixing to a device under test, and the conduction end being connected to the connection portion and transmitting current to the shunt via the connection portion.

2. The sensor structure according to claim 1, characterized in that, The mounting portion is a spherical groove provided on the outer wall surface of the housing, and the connection portion is a connection terminal of the shunt; The mounting end is provided with a spherical head, the spherical head is rotatably arranged in the spherical groove, and the conduction end is welded to the connection terminal.

3. The sensor structure according to claim 2, wherein One side of the spherical groove away from the connection terminal is open, and the spherical head can enter the spherical groove from the open end of the spherical groove.

4. The sensor structure according to claim 2, characterized in that, The housing is further provided with a limiting groove communicating with the spherical groove, the limiting groove extends along the arrangement direction of the spherical groove and the connection terminal, and one side of the limiting groove away from the spherical groove is open, and the opening size of the limiting groove is smaller than the inner diameter of the spherical groove; The adapter stud further includes a connecting arm, the connecting arm is connected to the mounting end and the spherical head, and the connecting arm is placed in the limiting groove.

5. The sensor structure according to claim 4, wherein The fixed end is provided with a fixing snap ring for fixing to the device under test; The mounting end is further provided with a mounting seat, the connecting arm is connected to the mounting seat, the mounting seat is connected to the fixing snap ring, and its size is larger than the size of the connecting arm.

6. The sensor structure according to claim 5, characterized in that The fixing snap ring is arranged with an opening to form two locking ends, and locking seats are arranged along the radial direction of the fixing snap ring at both locking ends, and through holes are arranged at each locking seat along the direction away from the other locking seat; The adapter stud further includes a locking bolt and a locking nut, the threaded sections of the locking bolt respectively pass through the two through holes, and the locking nut is screwed on the threaded section of the locking bolt.

7. The sensor structure according to claim 1, characterized in that, The housing has a receiving cavity and is provided with a card slot along the arrangement direction of the mounting portion and the connection portion; The circuit board is placed in the receiving cavity, and the shunt is clamped in the card slot.

8. The sensor structure according to claim 7, characterized in that The card slot is provided with a communication port communicating with the receiving cavity, and the circuit board is provided with a jack corresponding to the communication port; The sensor structure further includes a conductive pin, one end of the conductive pin is connected to the shunt, the other end extends into the receiving cavity from the communication port, passes through the jack, and is electrically connected to the circuit board.

9. The sensor structure according to claim 8, wherein, A plurality of positioning ribs are provided on the inner wall of the receiving cavity, and the plurality of positioning ribs are at least located on two adjacent inner side walls of the receiving cavity; A plurality of positioning grooves are provided on the side wall of the circuit board corresponding to the plurality of positioning ribs, and each positioning groove is for the corresponding positioning rib to pass through.

10. The sensor structure according to claim 7, wherein, The housing includes a base and a cover body, the cover body is detachably covered on the base and jointly encloses to form the receiving cavity with the base, wherein the card slot is provided on the base.

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