Probe for power battery detection

Abstract

The utility model relates to a probe for power battery detection in the technical field of battery detection, which comprises a shell, a top plate, a probe body and a metal probe head, the shell is provided with a connector, one end of a connecting frame is a limiting rod matched with the shell for fixing and limiting, and the limiting rod extends out of the surface of the shell; multi-point positioning is formed through a mounting frame, a connector, a limiting rod and a charging port, the freedom degrees of the X axis, the Y axis and the Z axis of a circuit board are limited, and a sealing rubber ring fixed and limited at one end of the charging port also plays a role in assisting the charging port to buffer when assisting the charging port to form point positioning, and meanwhile, the probability that dust enters the shell from the edge of the charging port is reduced; by adopting the structure, the position of the circuit board is limited comprehensively, the phenomenon that the circuit board is displaced or falls off when being subjected to impact force is reduced, and the traditional structure for reducing the situation that the circuit board is limited in a compact space, so that the circuit board is overheated or the temperature around the circuit board is increased, and the service life of the circuit board is influenced is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a probe for power battery detection. Background Art

[0002] Power batteries are specifically designed to power devices such as electric vehicles, electric bicycles, and power tools. They typically feature high energy density, long cycle life, and good safety performance. Common power battery types include lithium-ion batteries, nickel-metal hydride batteries, and lead-acid batteries. With the rapid development of the electric vehicle industry, power battery technology is also constantly advancing to meet higher energy demands and extend driving range.

[0003] A power battery test probe is a specialized tool used to detect and measure power battery performance parameters. It typically consists of a probe head, a connecting cable, and a measuring instrument. The probe head contacts the battery to collect data such as voltage and current. The connecting cable transmits this data to the measuring instrument, which displays and records this data, helping technicians analyze the battery's health and performance. Power battery test probes play a vital role in power battery production, assembly, maintenance, and recycling.

[0004] In existing probe testers, the circuit boards are generally welded or spliced inside the tester. When replacement is required, the welded method requires special tools for disassembly, while the spliced method circuit boards are easy to replace, but their installation stability is poor. When impacted by external forces, the circuit boards may be separated from their original installation positions, thereby causing errors in the detection accuracy. When a narrow space is used to limit the installation position of the circuit board, the circuit board will generate temperature during operation, causing the local temperature to be too high, which may cause the circuit board to short-circuit or affect its service life. When in use, its structure needs to be further processed and improved, which increases the process and reduces work efficiency. For this reason, the inventors have proposed a probe for power battery detection to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A probe for power battery detection includes a shell, a top plate, a needle body and a metal probe. The shell is connected to the top plate by a locking screw. The metal probe is installed at one end of the needle body. A connector for limiting the position of the needle body is installed inside the shell. A connecting hole for placing the needle body is provided in the middle of the connector. A connecting groove for fixing and limiting the position with the shell is provided on the surface of the connector. A circuit board is installed inside the shell. The surface of the circuit board is electrically connected to the charging port. The charging port extends to the surface of the shell. A sealing rubber ring for assisting in fixing and limiting the charging port is provided on the surface of the shell. A support plate is installed inside the shell. A connecting frame is provided on the surface of the support plate. One end of the connecting frame is a limiting rod for fixing and limiting the position with the shell. The limiting rod extends beyond the surface of the shell.

[0007] Furthermore, the connecting frames are respectively mounted on the surface of the support plate and are symmetrical to each other, one end of the connector extends beyond the surface of the shell, the needle body is mounted on the end of the connector that extends beyond the surface of the shell, the metal probe is circular, and the connector, the needle body and the metal probe are coaxially arranged;

[0008] The connecting frame is installed on the surface of the support plate to form a mutually symmetrical structure, which ensures the stability and symmetry of the circuit board. One end of the connector extends beyond the surface of the shell, so that the needle body can be installed at this end, thereby achieving more flexible connection and operation; the metal probe is circular and coaxially arranged with the connector and needle body. This design can ensure the accuracy and efficiency of signal transmission. The coaxial structure helps to reduce signal interference and improve measurement accuracy. At the same time, it is easy to maintain and replace the metal probe, enhancing the applicability and reliability of the detection device.

[0009] Furthermore, the internal wires of the circuit board are connected to an ammeter, one end of the ammeter abuts against the surface of the metal probe, one end of the ammeter is electrically connected to a wire, and one end of the wire is connected to a display;

[0010] The ammeter can monitor the current changes passing through the metal probe in real time and display them on the display. This design allows users to intuitively observe the current situation in the circuit, making it easier to detect circuit performance and diagnose faults. The display provides an output value condition, making the current reading easier to understand and analyze;

[0011] The working principle of the ammeter is based on the magnetic field effect generated when current passes through the wire. The coil inside the ammeter will be affected by the force when moving in the magnetic field, resulting in deflection. By measuring the deflection angle of the coil, the magnitude of the current passing through can be calculated. The display is connected to the end of the wire. The current at the end of the wire drives the control board inside the display to convert signals. When the display receives the display data, the display controls each liquid crystal particle inside to rotate to a different color surface, thereby combining into different colors and images, facilitating the display of accurately measured current values.

[0012] Furthermore, one end of the display is a display screen, which extends to the surface of the shell and is flush with the surface of the shell; the design of the display screen being flush with the shell makes the overall appearance more neat and modern, and since the display screen does not protrude from the surface of the shell, the risk of damage due to accidental collision or pressure is reduced, and the durability of the display screen is improved; in addition, since there are no protruding edges, dust and stains are not easy to accumulate between the display screen and the shell, which is convenient for cleaning and maintenance, and further facilitates the intuitive display of current values on the display screen.

[0013] Furthermore, a connection plate for limiting the position of the wire is installed on the surface of the support plate, and a plurality of fixed legs are installed on the surface of the connection plate. The fixed legs are in contact with the surface of the support plate, and the distance between two adjacent fixed legs is equidistant.

[0014] This design ensures the uniform distribution of the fixing brackets on the connecting plate. This setting helps to improve the stability and consistency of the support plate's positioning of the wires. The evenly distributed fixing brackets can more effectively disperse the weight and tension of the connecting plate and wires, reducing the pressure on a single point, thereby reducing the risk of damage or deformation. In addition, the use of an equidistant structure also facilitates standardization and automation in the production process, improves assembly efficiency, and ensures product consistency and reliability.

[0015] Furthermore, a battery is installed inside the housing, the battery and the circuit board are connected by a wire, one end of the battery is electrically connected to a power switch, and the power switch is fixed to the surface of the support plate through a mounting bracket, one end of the power switch extends beyond the surface of the housing, and one end of the mounting bracket abuts against the inner surface of the housing;

[0016] One end of the mounting bracket abuts against the inner surface of the shell to ensure the stable position of the power switch inside the shell and prevent the power switch from being displaced or loosened during use. In addition, this fixing method helps to disperse the force generated by the power switch when it is switched on and off, reduce the stress concentration of the power switch on the shell, thereby improving the stability and durability of the overall structure. At the same time, the abutment of the mounting bracket can also help absorb and disperse the vibration generated when the power switch is operated, reduce noise, and enhance user experience. Multi-point positioning is formed by the mounting bracket, connector, limit rod and charging port, reducing the displacement or falling off of the circuit board when it is subjected to impact force.

[0017] Furthermore, the surface of the circuit board is electrically connected to a power-on indicator light, and the shell is made of polymethyl methacrylate. The surface of the shell is provided with heat dissipation holes, which are used to assist in discharging heat inside the shell to the outside of the shell. When a circuit is formed between the power-on indicator light, the circuit board and the battery, the power-on indicator light emits light to ensure that the detection probe can be used normally. When the ammeter input of the detection probe is higher than the DC current set by the circuit board, the circuit between the power-on indicator light, the circuit board and the battery is disturbed, which proves that the voltage of the power battery is unstable and needs to be re-inspected. Polymethyl methacrylate has excellent electrical insulation properties and can effectively prevent the current generated by the power-on indicator light on the surface of the circuit board from damaging the shell during operation. In addition, polymethyl methacrylate also has good transparency, which is convenient for observing the status of the power-on indicator light. Polymethyl methacrylate is also strong in weather resistance and chemical corrosion resistance, which helps to protect the internal circuit from the influence of the external environment and extend the service life of the equipment.

[0018] Compared with the prior art, the present invention has the following advantages: multi-point positioning is achieved by the mounting bracket, connector, limit rod, and charging port, reducing the displacement or falling of the circuit board when subjected to impact force; the connector and limit rod limit the X-axis and Y-axis degrees of freedom of the circuit board; the sealing rubber ring fixed at one end of the charging port acts as a buffer for the auxiliary charging port when forming a point positioning, while reducing the probability of dust entering the interior of the housing from the edge of the charging port;

[0019] By abutting one end of the mounting bracket against the inner surface of the housing, the stable position of the power switch inside the housing can be ensured, preventing the power switch from being displaced or loosened during use. At the same time, the freedom of the circuit board in the Z axis is limited, thereby comprehensively defining the position of the circuit board, reducing the displacement or falling off of the circuit board when it is subjected to impact force, and improving the traditional structure that reduces the circuit board from being confined to a tight space, thereby causing the circuit board to overheat or causing the temperature around the circuit board to rise, thereby affecting the service life of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an axial view of a probe used for power battery testing;

[0021] Figure 2 This is a three-dimensional diagram of a probe for power battery testing;

[0022] Figure 3 This is another perspective view of a power battery testing probe;

[0023] Figure 4 This is an axial view of the internal structure of a probe used for power battery testing;

[0024] Figure 5This is a diagram of the internal structure of a power battery testing probe from another axis;

[0025] Figure 6 This is another axial view of the internal structure of a power battery testing probe;

[0026] Figure 7 This is a three-dimensional internal structure diagram of a power battery testing probe;

[0027] Figure 8 This is another three-dimensional internal structure diagram of a power battery testing probe;

[0028] Figure 9 This is another three-dimensional internal structure diagram of a power battery testing probe;

[0029] In the figure: housing 1, top plate 2, needle body 3, metal probe 4, locking screw 5, connector 6, connection hole 7, connection slot 8, circuit board 9, charging port 10, sealing rubber ring 11, support plate 12, connecting frame 13, limit rod 14, ammeter 15, wire 16, display 17, display screen 18, connecting plate 19, fixed tripod 20, fixed tripod 20, battery 21, power switch 22, mounting frame 23, power-on indicator light 24, heat dissipation hole 25. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0031] For this example, please refer to Figures 1-9 , a specific implementation of a power battery detection probe includes a shell 1, a top plate 2, a needle body 3 and a metal probe 4, the shell 1 is connected to the top plate 2 by a locking screw 5, the metal probe 4 is installed at one end of the needle body 3, a connector 6 for limiting the position of the needle body 3 is installed inside the shell 1, a connecting hole 7 for placing the needle body 3 is opened in the middle of the connector 6, a connecting groove 8 for fixing and limiting with the shell 1 is opened on the surface of the connector 6, a circuit board 9 is installed inside the shell 1, the surface of the circuit board 9 is electrically connected to the charging port 10, the charging port 10 extends to the surface of the shell 1, the surface of the shell 1 is provided with a sealing rubber ring 11 for assisting the fixing and limiting of the charging port 10, a support plate 12 is installed inside the shell 1, the surface of the support plate 12 is provided with a connecting frame 13, one end of the connecting frame 13 is a limiting rod 14 for fixing and limiting with the shell 1, and the limiting rod 14 extends beyond the surface of the shell 1.

[0032] The connecting frames 13 are respectively mounted on the surface of the support plate 12 and are symmetrical to each other. One end of the connector 6 extends beyond the surface of the housing 1. The needle body 3 is mounted on the end of the connector 6 that extends beyond the surface of the housing 1. The metal probe 4 is circular, and the connector 6, the needle body 3 and the metal probe 4 are coaxially arranged.

[0033] The connecting frame 13 is installed on the surface of the support plate 12 to form a mutually symmetrical structure, which ensures the stability and symmetry of the circuit board 9. One end of the connector 6 extends beyond the surface of the shell 1, so that the needle body 3 can be installed at this end, thereby achieving more flexible connection and operation; and the metal probe 4 is circular and is coaxially arranged with the connector 6 and the needle body 3. This design can ensure the accuracy and efficiency of signal transmission. The coaxial structure helps to reduce signal interference and improve measurement accuracy. At the same time, it is easy to maintain and replace the metal probe 4, thereby enhancing the applicability and reliability of the detection device.

[0034] The internal wires of the circuit board 9 are connected to an ammeter 15, one end of the ammeter 15 abuts against the surface of the metal probe 4, one end of the ammeter 15 is electrically connected to a wire 16, one end of the wire 16 is connected to a display 17;

[0035] The ammeter 15 can monitor the current changes passing through the metal probe 4 in real time and display them on the display 17. This design allows the user to intuitively observe the current situation in the circuit, making it easier to detect circuit performance and diagnose faults. The display 17 provides a condition for outputting a numerical value, making the current reading easier to understand and analyze.

[0036] The operating principle of ammeter 15 is based on the magnetic field effect generated when current passes through wire 16. The coil (not shown) inside ammeter 15 is subjected to a force when moving in the magnetic field, resulting in deflection. By measuring the deflection angle of the coil, the magnitude of the current passing through can be calculated. The end of wire 16 is connected to display 17. The current at the end of wire 16 drives the control board (not shown) inside display 17 to perform signal conversion. When display 17 receives display data, display 17 controls each liquid crystal particle inside to rotate to a different color surface, thereby combining different colors and images to facilitate the display of accurately measured current values.

[0037] One end of the display 17 is a display screen 18, which extends to the surface of the shell 1 and is flush with the surface of the shell 1; the design of the display screen 18 being flush with the shell 1 makes the overall appearance more neat and modern, and since the display screen 18 does not protrude from the surface of the shell 1, the risk of damage due to accidental collision or pressure is reduced, and the durability of the display screen 18 is improved; in addition, since there are no protruding edges, dust and stains are not easy to accumulate between the display screen 18 and the shell 1, which is convenient for cleaning and maintenance, and further facilitates the intuitive display of current values on the display screen 18.

[0038] The surface of the support plate 12 is mounted with a connection plate 19 for limiting the position of the wire 16. The surface of the connection plate 19 is mounted with a plurality of fixed legs 20. The fixed legs 20 abut against the surface of the support plate 12. The distance between two adjacent fixed legs 20 is equidistant.

[0039] This design ensures the uniform distribution of the fixed legs 20 on the connecting plate 19. This setting helps to improve the stability and consistency of the support plate 12 in defining the position of the wire 16. The evenly distributed fixed legs 20 can more effectively disperse the weight and tension of the connecting plate 19 and the wire 16, reducing the pressure on a single point, thereby reducing the risk of damage or deformation. In addition, the use of an equidistant structure also facilitates standardization and automation in the production process, improves assembly efficiency, and ensures product consistency and reliability.

[0040] A battery 21 is installed inside the housing 1. The battery 21 is connected to the circuit board 9 by an electric wire. One end of the battery 21 is electrically connected to a power switch 22. The power switch 22 is fixed to the surface of the support plate 12 via a mounting bracket 23. One end of the power switch 22 extends beyond the surface of the housing 1, and one end of the mounting bracket 23 abuts against the inner surface of the housing 1.

[0041] One end of the mounting bracket 23 abuts against the inner surface of the shell 1 to ensure the stable position of the power switch 22 inside the shell 1, preventing the power switch 22 from being displaced or loosened during use. In addition, this fixing method helps the power switch 22 to disperse the force generated by the operation when performing the switch operation, reduce the stress concentration of the power switch 22 on the shell 1, thereby improving the stability and durability of the overall structure. At the same time, the abutment of the mounting bracket 23 can also help absorb and disperse the vibration generated when the power switch 22 is operated, reduce noise, and enhance user experience. Multi-point positioning is formed by the mounting bracket 23, the connector 6, the limit rod 14 and the charging port 10, reducing the displacement or falling off of the circuit board 9 when it is subjected to impact force.

[0042] The surface of the circuit board 9 is electrically connected to a power-on indicator light 24. The housing 1 is made of polymethyl methacrylate. The surface of the housing 1 is provided with heat dissipation holes 25. The heat dissipation holes 25 are used to assist the heat inside the housing 1 to be discharged to the outside of the housing 1, thereby preventing the circuit board 9 from overheating or increasing the temperature around the circuit board 9, thereby affecting the service life of the circuit board 9. When a circuit is formed between the power-on indicator light 24, the circuit board 9 and the battery 21, the power-on indicator light 24 emits light to ensure that the detection probe can be used normally. When the input of the ammeter 15 of the detection probe is higher than the DC set by the circuit board 9, the power supply 24 will be turned on. When the power is on, if the circuit between the power-on indicator light 24 and the circuit board 9 and the battery 21 is disturbed, it proves that the voltage of the power battery is unstable and needs to be re-inspected; polymethyl methacrylate has excellent electrical insulation properties, which can effectively prevent the current generated by the power-on indicator light 24 on the surface of the circuit board 9 during operation from damaging the shell. In addition, polymethyl methacrylate also has good transparency, which is convenient for observing the status of the power-on indicator light 24. Polymethyl methacrylate is also strong in weather resistance and chemical corrosion resistance, which helps to protect the internal circuit from the influence of the external environment and extend the service life of the equipment.

[0043] The key points of the design of the present invention are: multi-point positioning is formed by the mounting bracket 23, the connector 6, the limiting rod 14 and the charging port 10, which reduces the displacement or falling off of the circuit board 9 when subjected to impact force. The connector 6 and the limiting rod 14 limit the X-axis and Y-axis freedom of the circuit board 9. The sealing rubber ring 11 fixed at one end of the charging port 10 also plays a role in buffering the auxiliary charging port 10 when forming a point positioning, while reducing the probability of dust entering the interior of the housing 1 from the edge of the charging port 10.

[0044] By abutting one end of the mounting bracket 23 against the inner surface of the housing 1, the stable position of the power switch 22 inside the housing 1 can be ensured, preventing the power switch 22 from being displaced or loosened during use, and at the same time limiting the Z-axis freedom of the circuit board 9, thereby comprehensively limiting the position of the circuit board 9, reducing the displacement or falling off of the circuit board 9 when it is subjected to impact force, and improving the traditional structure that reduces the circuit board 9 to be confined to a tight space, thereby causing the circuit board 9 to overheat or increase the temperature around the circuit board 9, thereby affecting the service life of the circuit board 9.

[0045] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered as within the scope of protection of the present invention.

Claims

1. A power battery detection probe, comprising a housing, a top plate, a needle body, and a metal probe, characterized in that: The shell is connected to the top plate by a locking screw, and the metal probe is installed at one end of the needle body. A connector for limiting the position of the needle body is installed inside the shell. A connecting hole for placing the needle body is provided in the middle of the connector. A connecting groove for fixing and limiting the position with the shell is provided on the surface of the connector. A circuit board is installed inside the shell, and the surface of the circuit board is electrically connected to the charging port. The charging port extends to the surface of the shell. A sealing rubber ring for assisting the fixing and limiting of the charging port is provided on the surface of the shell. A support plate is installed inside the shell, and a connecting frame is provided on the surface of the support plate. One end of the connecting frame is a limiting rod for fixing and limiting the position with the shell, and the limiting rod extends beyond the surface of the shell.

2. A power battery detection probe according to claim 1, characterized in that: The connecting frames are respectively installed on the surface of the support plate and are symmetrical to each other. One end of the connecting head extends beyond the surface of the shell. The needle body is installed on the end of the connecting head extending beyond the surface of the shell. The metal probe is circular, and the connecting head, needle body and metal probe are coaxially arranged.

3. The power battery detection probe according to claim 1, characterized in that: The internal wires of the circuit board are connected to an ammeter, one end of the ammeter abuts against the surface of the metal probe, one end of the ammeter is electrically connected to a wire, and one end of the wire is connected to a display.

4. A power battery detection probe according to claim 3, characterized in that: One end of the display is a display screen, which extends to the surface of the shell and is flush with the surface of the shell.

5. A power battery detection probe according to any one of claims 1 to 3, characterized in that: The surface of the support plate is installed with a connecting plate for limiting the position of the wire, and the surface of the connecting plate is installed with a plurality of fixed legs, which abut against the surface of the support plate, and the distance between two adjacent fixed legs is equidistant.

6. A power battery testing probe according to any one of claims 1 to 3, characterized in that: A battery is installed inside the shell, and the battery and the circuit board are connected by wires. One end of the battery is electrically connected to a power switch, and the power switch is fixed to the surface of the support plate through a mounting bracket. One end of the power switch extends beyond the surface of the shell, and one end of the mounting bracket abuts against the inner surface of the shell.

7. A power battery testing probe according to any one of claims 1 to 3, characterized in that: The surface of the circuit board is electrically connected with a power-on indicator light. The shell is made of polymethyl methacrylate, and heat dissipation holes are opened on the surface of the shell.

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