Current sensor for monitoring vehicle-mounted battery

Abstract

The utility model provides a current sensor for monitoring a vehicle-mounted battery, and relates to the field of current sensors, the current sensor comprises a vibration reduction assembly, the inner cavity of the vibration reduction assembly is provided with a sensor main body, and the vibration reduction assembly comprises a placing rack; the magnetic core can be placed in a limited mode through the shell, the magnetic core can be connected with the PCB through the pin pieces, when current passing through the battery passes through the vibration reduction assembly through the power transmission line, an output signal in proportion to the current intensity can be generated, and by outputting the output signal, personnel can conveniently know the current condition during discharging of the vehicle-mounted battery, and the vehicle-mounted battery can be protected from being damaged. The vibration force of a vehicle can be buffered through the rubber strip and the rubber mat, then vibration reduction is conducted on the magnetic core and the PCB, meanwhile, the arc-shaped piece, the damper and the spring can deform through the vibration force, the deformation force can buffer the vibration force, meanwhile, the vibration force can be counteracted through the reset elastic force of the arc-shaped piece, the damper and the spring, and therefore vibration reduction is conducted on the magnetic core and the PCB. Therefore, the stability of the damping assembly is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of current sensors, and more particularly to a current sensor for on-vehicle battery monitoring. Background Art

[0002] Current sensors for on-vehicle battery monitoring are typically designed to measure current changes during battery charging and discharging for battery status monitoring and management.

[0003] When the battery starts charging or discharging and current flows through the sensor, this electric field affects the electron flow of the components in the sensor, generating an output signal proportional to the current intensity. This signal is amplified by an amplifier circuit to improve accuracy and adaptability, and the output signal value is displayed to obtain the current situation.

[0004] However, when the current sensors for on-vehicle battery monitoring in the prior art are in use, since they are mostly installed near the negative or positive pole of the in-vehicle battery, during vehicle operation, the vibration impact force in the vehicle engine compartment is transmitted to the sensor, easily causing the internal components of the sensor to become loose or damaged, thus affecting the measurement accuracy.

[0005] In summary, the utility model provides a current sensor for on-vehicle battery monitoring to solve the above problems. Summary of the Utility Model

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A current sensor for on-vehicle battery monitoring includes a vibration damping component. The inner cavity of the vibration damping component is provided with a sensor main body. The vibration damping component includes a placement rack, and springs are fixedly connected to both sides of the top and bottom of the inner cavity of the placement rack. A damper is arranged in the inner cavity of the spring. Arc-shaped pieces are arranged at the top and bottom of the inner cavity of the placement rack. The sensor main body includes a housing. A housing cover is arranged on one side of the housing. A magnetic core is arranged in the inner cavity of the housing, and a pin piece is arranged on one side of the magnetic core. A PCB board is arranged on one side of the magnetic core, and the other end of the pin piece is connected to the PCB board. A rubber strip is fixedly connected to one side of the housing cover, and a rubber pad is fixedly connected to the inner wall of the housing.

[0008] Further, in the utility model, the side of the rubber pad away from the inner wall of the housing contacts the magnetic core. The side of the rubber strip away from the housing cover contacts the PCB board, and the PCB board is integrated with a magnetic sensitive element, an amplification and processing circuit, and a signal line.

[0009] Further, in the present utility model, one side of the arc-shaped piece away from the placement rack is fixedly connected to the placement rack, one end of the damper away from the placement rack is fixedly connected to the placement rack, one end of the damper is fixedly connected to the inner wall of the placement rack, and the other end is fixedly connected to the placement rack.

[0010] Further, in the present utility model, limiting grooves are provided at both the top and bottom of the inner cavity of the placement rack. One end of the arc-shaped piece is fixedly connected to the inner wall of the placement rack, and the other end of the arc-shaped piece extends into the inner cavity of the limiting groove and is slidably connected to the inner cavity of the limiting groove.

[0011] Further, in the present utility model, a mounting seat is fixedly connected to the bottom of the placement rack. Mounting holes are provided on both sides of the top of the mounting seat, and a bottom pad is fixedly connected to the bottom of the mounting seat.

[0012] Further, in the present utility model, bolts are movably connected to the four peripheries of one side of the shell cover. Threaded holes are provided on the four peripheries of one side of the shell body. One end of the bolt extends into the inner cavity of the threaded hole and is threadedly connected to the inner cavity of the threaded hole.

[0013] Beneficial effects: The present utility model has the following beneficial effects:

[0014] In the present utility model, the magnetic core can be placed in a limited position through the shell body, and the pin piece can connect the magnetic core and the PCB board. The shell cover closes the shell body, thereby protecting the PCB board and the magnetic core. When the current of the battery passes through the shock absorption component through the power transmission line, an output signal proportional to the current intensity will be generated. By outputting the output signal, it is convenient for personnel to know the current situation when the in-vehicle battery discharges. The force of vehicle vibration can be buffered through the rubber strip and the rubber pad, thereby damping the magnetic core and the PCB board. At the same time, the vibration force will cause the arc-shaped piece, the damper and the spring to deform, and the deformation force will buffer the vibration force. At the same time, the reset elastic force of the arc-shaped piece, the damper and the spring can offset the vibration force, thereby ensuring the stability of the shock absorption component. Description of the drawings

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the exploded state of the shell body of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 partial enlarged structural schematic diagram at A in;

[0018] Figure 4 is the structural schematic diagram of the connection between the placement rack, the spring and the arc-shaped piece of the present utility model.

[0019] In the figure:

[0020] 1. Vibration damping component; 11. Placing rack; 12. Spring; 13. Damper; 14. Arc-shaped piece; 141. Limit groove; 2. Sensor main body; 21. Housing; 211. Screw hole; 22. Housing cover; 221. Bolt; 23. Magnetic core; 24. PCB board; 25. Pin piece; 26. Rubber pad; 27. Rubber strip; 3. Mounting seat; 31. Bottom pad. Specific implementation manner

[0021] In order to better understand the technical content of the present invention, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows. In the present disclosure, aspects of the present invention are described with reference to the drawings, and many illustrative embodiments are shown in the drawings. The embodiments of the present disclosure do not necessarily define all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not limited to any implementation manner. In addition, some aspects of the present invention can be used alone, or in any suitable combination with other aspects disclosed in the present invention.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, this is the first embodiment of the present invention. This embodiment provides a current sensor for on-vehicle battery monitoring, including a vibration damping component 1. A sensor main body 2 is arranged in the inner cavity of the vibration damping component 1. The vibration damping component 1 includes a placing rack 11, and springs 12 are fixedly connected to both sides of the top and bottom of the inner cavity of the placing rack 11. A damper 13 is arranged in the inner cavity of the spring 12. Arc-shaped pieces 14 are arranged at the top and bottom of the inner cavity of the placing rack 11. The sensor main body 2 includes a housing 21. A housing cover 22 is arranged on one side of the housing 21. A magnetic core 23 is arranged in the inner cavity of the housing 21. A pin piece 25 is arranged on one side of the magnetic core 23. A PCB board 24 is arranged on one side of the magnetic core 23. The other end of the pin piece 25 is connected to the PCB board 24. A rubber strip 27 is fixedly connected to one side of the housing cover 22. A rubber pad 26 is fixedly connected to the inner wall of the housing 21.

[0024] As Figures 1-4As shown, the magnetic core 23 can be placed in a limited position through the housing 21, and the pin piece 25 can connect the magnetic core 23 and the PCB board 24. The housing 21 is closed by the housing cover 22, so as to protect the PCB board 24 and the magnetic core 23. When the battery current passes through the power transmission line and through the vibration damping component 1, an output signal proportional to the current intensity will be generated. By outputting the output signal, it is convenient for personnel to know the current situation when the vehicle-mounted battery discharges. The force of vehicle vibration can be buffered through the rubber strip 27 and the rubber pad 26, thereby damping the magnetic core 23 and the PCB board 24. At the same time, the vibration force will cause the arc-shaped piece 14, the damper 13 and the spring 12 to deform, and the deforming force will buffer the vibration force. At the same time, the reset elastic force of the arc-shaped piece 14, the damper 13 and the spring 12 can cancel the vibration force, so as to ensure the stability of the vibration damping component 1.

[0025] Embodiment 2

[0026] Referring to Figures 1-4 , this is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0027] In this embodiment, one side of the rubber pad 26 away from the inner wall of the housing 21 is in contact with the magnetic core 23, one side of the rubber strip 27 away from the housing cover 22 is in contact with the PCB board 24, and a magnetic sensitive element, an amplification processing circuit and a signal line are integrated on the PCB board.

[0028] One side of the arc-shaped piece 14 away from the placement rack 11 is fixedly connected to the placement rack 11. One end of the damper 13 away from the placement rack 11 is fixedly connected to the placement rack 11. One end of the damper 13 is fixedly connected to the inner wall of the placement rack 11, and the other end is fixedly connected to the placement rack 11.

[0029] Limit slots 141 are provided at the top and bottom of the inner cavity of the placement rack 11. One end of the arc-shaped piece 14 is fixedly connected to the inner wall of the placement rack 11. The other end of the arc-shaped piece 14 extends into the inner cavity of the limit slot 141 and is slidably connected to the inner cavity of the limit slot 141.

[0030] As Figures 1-4 shown, by contacting the magnetic core 23 through the rubber pad 26, the soft elasticity of the rubber pad 26 can damp the magnetic core 23. At the same time, by contacting the PCB board 24 through the rubber strip 27, the soft elasticity of the rubber strip 27 can damp the PCB board 24. When the arc-shaped piece 14 deforms, one end of the arc-shaped piece 14 will slide along the inner cavity of the limit slot 141, thereby limiting the movement track of the arc-shaped piece 14.

[0031] Embodiment 3

[0032] Referring to Figures 1-3 , this is the third embodiment of the present invention, and this embodiment is based on the previous two embodiments.

[0033] In this embodiment, a mounting seat 3 is fixedly connected to the bottom of the placement rack 11. Mounting holes are formed on both sides of the top of the mounting seat 3, and a bottom pad 31 is fixedly connected to the bottom of the mounting seat 3.

[0034] Bolts 221 are movably connected to the four peripheries of one side of the shell cover 22, and screw holes 211 are formed on the four peripheries of one side of the shell body 21. One end of the bolt 221 extends into the inner cavity of the screw hole 211 and is threadedly connected to the inner cavity of the screw hole 211.

[0035] As Figures 1-3 shown, the mounting seat 3 cooperates with the mounting holes to facilitate the installation of the vibration damping component 1 and the sensor main body 2 on the vehicle. At the same time, the mounting seat 3 can stably support the vibration damping component 1 and the sensor main body 2, and the bottom pad 31 can initially slow down the vibration force transmitted from the vehicle body to the vibration damping component 1 and the sensor main body 2. When the shell cover 22 contacts the shell body 21, the bolt 221 will enter the screw hole 211. By rotating the bolt 221, the bolt 221 can continuously enter the inside of the screw hole 211 while rotating, thereby realizing the connection and ensuring the firmness of the connection between the shell cover 22 and the shell body 21.

[0036] During use, first, the magnetic core 23 is placed inside the shell body 21, and then the shell body 21 can limit it. The pin piece 25 can connect the magnetic core 23 and the PCB board 24. The shell cover 22 closes the shell body 21, thereby protecting the PCB board 24 and the magnetic core 23. When monitoring the battery current, when the current of the battery passes through the vibration damping component 1 through the power transmission line, the current electric field will affect the electron flow of the vibration damping component 1, and then an output signal proportional to the current intensity will be generated. By outputting the output signal, it is convenient for personnel to know the current situation of the in-vehicle battery during discharge. When the vehicle vibrates, the bottom pad 31 can initially slow down the vibration, and the rubber strip 27 and the rubber pad 26 can buffer the vibration force of the vehicle to damp the vibration of the magnetic core 23 and the PCB board 24, thereby initially ensuring the stability of the magnetic core 23 and the PCB board 24. At the same time, the vibration force causes the arc-shaped piece 14, the damper 13, and the spring 12 to deform through the vibration damping component 1, and the deformed force will buffer the vibration force, making the vibration damping component 1 gradually stable. At the same time, the reset elastic force of the arc-shaped piece 14, the damper 13, and the spring 12 can cancel the vibration force, thereby ensuring the stability of the vibration damping component 1 and realizing the buffer vibration damping operation.

[0037] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. The control method is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in this field. And this application document is mainly used to protect the mechanical device, so the control method and circuit connection will not be explained in detail in this application document.

[0038] Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model pertains may make various modifications and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. A current sensor for monitoring a vehicle battery, comprising a vibration reduction assembly (1), characterized in that: The inner cavity of the vibration reduction component (1) is provided with a sensor body (2), the vibration reduction component (1) comprises a placement frame (11), and springs (12) are fixedly connected to both sides of the top and bottom of the inner cavity of the placement frame (11), the inner cavity of the spring (12) is provided with a damper (13), and the top and bottom of the inner cavity of the placement frame (11) are provided with an arc-shaped piece (14), the sensor body (2) comprises a shell (21), one side of the shell (21) is provided with a shell cover (22), the inner cavity of the shell (21) is provided with a magnetic core (23), and one side of the magnetic core (23) is provided with a pin piece (25), one side of the magnetic core (23) is provided with a PCB board (24), and the other end of the pin piece (25) is connected to the PCB board (24), one side of the shell cover (22) is fixedly connected with a rubber strip (27), and the inner wall of the shell (21) is fixedly connected with a rubber pad (26).

2. The vehicle-mounted battery monitoring current sensor as claimed in claim 1, characterized in that: The side of the rubber pad (26) away from the inner wall of the shell (21) contacts the magnetic core (23), and the side of the rubber strip (27) away from the shell cover (22) contacts the PCB board (24), and the PCB board is integrated with a magnetic sensitive element, an amplification processing circuit and a signal line.

3. The vehicle-mounted battery monitoring current sensor as claimed in claim 1, characterized in that: The side of the arc-shaped sheet (14) away from the placement rack (11) is fixedly connected to the placement rack (11), the end of the damper (13) away from the placement rack (11) is fixedly connected to the placement rack (11), one end of the damper (13) is fixedly connected to the inner wall of the placement rack (11), and the other end is fixedly connected to the placement rack (11).

4. The vehicle-mounted battery monitoring current sensor as claimed in claim 1, characterized in that: The top and bottom of the inner cavity of the placement rack (11) are both provided with a limiting groove (141); one end of the arc-shaped piece (14) is fixedly connected to the inner wall of the placement rack (11); the other end of the arc-shaped piece (14) extends to the inner cavity of the limiting groove (141) and is slidably connected to the inner cavity of the limiting groove (141).

5. The vehicle-mounted battery monitoring current sensor as claimed in claim 1, characterized in that: The bottom of the placement rack (11) is fixedly connected to a mounting seat (3), both sides of the top of the mounting seat (3) are provided with mounting holes, and the bottom of the mounting seat (3) is fixedly connected to a bottom pad (31).

6. The vehicle-mounted battery monitoring current sensor as claimed in claim 1, characterized in that: Bolts (221) are movably connected around one side of the shell cover (22), screw holes (211) are opened around one side of the shell (21), and one end of the bolt (221) extends to the inner cavity of the screw hole (211) and is threadedly connected to the inner cavity of the screw hole (211).

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