Quick connecting device for collecting head of magnetic type storage battery tester and working method of quick connecting device

Abstract

The invention relates to a magnetic type storage battery tester acquisition head quick connecting device and a working method thereof, belongs to an electrical test technology, and aims to fix an acquisition head on a storage battery pole screw through magnetic force, thereby not only improving the connecting strength of the acquisition head, but also improving the wire connection and disconnection speed, and solving the trouble of interruption in the midway of discharge. And the other end adopts a connecting female head for connecting an acquisition line. The magnetic collection head meets the requirements of large-scale, high-precision, high-efficiency, high-safety and non-destructive modern storage battery testing, and is an important innovation on traditional outdated, low-efficiency and dangerous connection modes (such as shark clips and puncture probes). A magnetic material technology, an electric contact technology and an insulation safety design are integrated. The design greatly improves the efficiency and safety of the test work, and is a typical example for promoting industry development.

Description

Technical Field

[0001] This invention belongs to the field of electrical testing technology, and in particular to a quick connection device for the acquisition head of a magnetic battery tester and its working method. Background Technology

[0002] As a core energy storage unit, batteries are widely used in industries such as telecommunications, power, and information technology, where they serve as backup power. Accurate measurement of their performance parameters, such as terminal voltage, internal resistance, and capacity, is crucial for assessing battery state of health (SOH) and ensuring the safe and reliable operation of the system. Annual charge-discharge tests are required to guarantee battery reliability, and the accuracy and reliability of these tests depend primarily on the voltage acquisition connection device. During testing, the voltage acquisition line of the tester must be reliably connected to the battery terminals.

[0003] Existing technology 1: Shark clip connection. This is the most traditional and common connection method. However, it has significant drawbacks: 1. The clamping force of traditional shark springs decreases with use and is prone to loosening in vibrating environments, leading to unstable and increased contact resistance. Unstable contact resistance directly introduces error voltage into the measurement circuit, severely affecting the accuracy of voltage acquisition.

[0004] 2. In cases where the space in the insulation of the battery terminals is narrow, the shark clips cannot stably grip the terminals and may pop open. A set of communication batteries has 24 cells, and a single discharge can last for 3 to 8 hours, requiring a total of 31 data acquisition heads (total positive, total negative, negative of the first cell, all positive of the 24 cells, and 4 acquisition modules). The popping open of a single shark clip can cause the entire discharge to fail.

[0005] 3. Inefficiency and physical damage: Clamping individual batteries one by one on large-scale battery packs is time-consuming and labor-intensive. Furthermore, the metal teeth can scratch or damage the electrode terminal surfaces, affecting subsequent connections and potentially inducing corrosion.

[0006] 4. Significant safety hazards: Its metal jaws and exposed shaft structure make it extremely easy for short circuits to occur between the positive and negative terminals when operating within densely packed battery packs due to improper operation or tool slippage. This can generate huge electric arcs, posing a serious threat to personnel and equipment and posing a great safety hazard.

[0007] Existing technology 2: Bolt-fixed connection.

[0008] In some applications requiring high reliability, bolts are used to secure the wires to the battery terminals. This method offers the lowest and most stable connection resistance, but its biggest drawback is its extremely low efficiency, making it completely unsuitable for the frequent testing and rapid maintenance needs of the power communication field.

[0009] Therefore, there is an urgent need in this field for a voltage acquisition connection device that can achieve fast connection, high reliability contact, non-destructive terminals, high security and error prevention capabilities. Summary of the Invention

[0010] The purpose of this invention is to overcome the shortcomings of the prior art and propose a magnetic battery tester acquisition head quick connection device and its working method. This invention is easy to install and disassemble, and the secure fixation facilitates monitoring the voltage of each battery cell during discharge. This design uses simple magnetic force to fix the acquisition head to the screws on the battery terminals, which not only improves the connection strength of the acquisition head but also increases the speed of wiring and disconnection, and solves the problem of interruption during discharge. In addition, the magnetic acquisition head is easy to store and can be expanded for remote charging and discharging of single battery cell information.

[0011] The technical problem solved by this invention is achieved through the following technical solution: The magnetic battery tester's acquisition head quick connection device includes a high-conductivity contact piece, a connecting female connector, and an integrated insulating housing. The high-conductivity contact piece is installed inside the integrated insulating housing, and its protruding end connects to the connecting female connector. The high-conductivity contact piece is used for low-resistance, stable, and non-destructive electrical contact with the battery. The connecting female connector is used to connect to the tester's main unit via a high-quality shielded cable, enabling quick connection and signal transmission. The integrated insulating housing provides safety shielding.

[0012] Furthermore, the contact surface between the high-conductivity contact piece and the battery is made of gold-plated copper, where the gold layer prevents oxidation and the copper-based material ensures excellent conductivity. The high-conductivity contact piece is embedded inside an integrated insulating housing.

[0013] Furthermore, the highly conductive contact piece is gourd-shaped, with a powerful permanent magnet placed inside the gourd, and the bottom of the gourd being the contact surface that makes electrical contact with the battery. Voltage is collected by contacting the battery terminals. The gourd handle is embedded in the connecting female connector and is connected to the acquisition box through an external test cable.

[0014] Moreover, the powerful permanent magnet is a neodymium iron boron magnet, which is embedded in a highly conductive contact piece.

[0015] Furthermore, one end of the female connector is connected to a highly conductive contact piece, and the other end of the female connector is connected to the main unit of the test instrument through a high-quality shielded wire, achieving rapid connection and signal transmission.

[0016] Moreover, the integrated insulating shell is shaped like a thumbtack, with a highly conductive contact piece exposed on the back. The edge of the integrated insulating shell is the thinnest, gradually thickening inward in an arc shape. The connecting female head and the back are integrated into one structure, and the acquisition contact piece extends from the inside to the inside of the acquisition female head.

[0017] A method for operating a quick-connect device for the acquisition head of a magnetic battery tester, comprising the following steps: Step 1: Connect the main unit of the tester to the female connector using a high-quality shielded cable; Step 2: Place the connecting device on the battery terminal screw, and achieve a fixed connection with the battery terminal screw through the strong permanent magnet inside the high conductivity contact piece. At the same time, the screw of the battery terminal is connected through the contact surface of the high conductivity contact piece. Step 3: Turn on the tester and test the battery.

[0018] The advantages and effects of this invention are as follows: 1. This invention uses magnetic force to fix the acquisition head to the battery terminal screw, which not only improves the connection strength of the acquisition head but also increases the speed of wiring and disconnection, and solves the problem of interruption during discharge. The other end uses a female connector for connecting the acquisition wire. The magnetic acquisition head meets the modern battery testing requirements of large-scale, high-precision, high-efficiency, high-safety, and non-destructive testing, and represents a significant innovation over traditional, outdated, inefficient, and dangerous connection methods (such as shark clips and puncture probes). It integrates magnetic material technology, electrical contact technology, and insulation safety design. This design greatly improves the efficiency and safety of testing work and is a typical example of driving industry development.

[0019] 2. This invention has extremely high connection efficiency and convenience: it achieves quick connection and disconnection with a single touch through magnetic adsorption, which improves the speed of wiring and disconnection of the acquisition head and saves installation time.

[0020] 3. This invention has high environmental adaptability: the strong magnetic force ensures the reliability of the connection in the environment of slight vibration, and solves the problem of interruption during discharge.

[0021] 4. This invention has excellent safety performance: the fully insulated housing completely eliminates the risk of accidental short circuits and electric shock to operators.

[0022] 5. This invention facilitates storage: Traditional shark clips are irregularly shaped, often resulting in the collection line becoming tangled. The shark clip's unusual shape easily damages the storage bag and makes it very easy to lose. The magnetic collection head features a circular design; its regular shape facilitates storage, and the absence of sharp edges will not damage the storage bag. The clips can be magnetically attached together, and the insulating shell makes them easy to separate.

[0023] 6. This invention enables non-destructive testing: Traditional metal teeth can easily damage the surface of electrode terminals, while the magnetic acquisition head achieves a completely non-destructive connection. Attached Figure Description

[0024] Figure 1 This is a rear view of the magnetic collection head of the present invention; Figure 2 This is a side view of the magnetic acquisition head of the present invention. Figure 3 This is a schematic diagram of the high conductivity contact piece of the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Magnetic battery tester acquisition head quick connection device, such as Figures 1 to 3 As shown, it includes a high-conductivity contact piece, a connecting female connector, and an integrated insulating housing. The high-conductivity contact piece is installed inside the integrated insulating housing, and the protruding end of the high-conductivity contact piece connects to the connecting female connector. The high-conductivity contact piece is used for low-resistance, stable, and non-destructive electrical contact with the battery. The connecting female connector is used to connect to the test instrument host through a high-quality shielded wire to achieve fast connection and signal transmission. The integrated insulating housing is used for safety shielding.

[0027] The contact surface between the high-conductivity contact piece and the battery uses gold-plated copper. The gold layer prevents oxidation, while the copper base material ensures excellent conductivity. The high-conductivity contact piece is embedded inside an integrated insulating housing. The core function of the high-conductivity contact piece is to ensure a low-resistance ohmic contact with the metal electrode body under magnetic force, greatly reducing the overall contact resistance and improving stability, thereby ensuring the accuracy of voltage acquisition.

[0028] The highly conductive contact piece is gourd-shaped, with a powerful permanent magnet placed inside. The bottom of the gourd is the contact surface that makes electrical contact with the battery, and the voltage is collected by contacting the battery terminals. The handle of the gourd is embedded in the connecting female connector and is connected to the acquisition box through an external test cable.

[0029] The powerful permanent magnet uses neodymium iron boron (NdFeB) magnets, which are embedded in highly conductive contact pieces. The magnetic force of the NdFeB magnets is precisely calculated to ensure that it provides sufficient attraction force to resist slight vibrations in the testing environment, while not being too strong to be difficult to remove or to cause magnetic damage to the battery terminals.

[0030] One end of the female connector connects to a highly conductive contact piece, while the other end connects to the main unit of the test instrument via a high-quality shielded cable, enabling rapid connection and signal transmission. The connection between the high-quality shielded cable and the female connector features a stress-relief design to prevent pulling and bending.

[0031] The integrated insulating shell is the basic structure and safety barrier of this invention. The fully insulated shell is circular in shape, resembling a thumbtack on the front, with the acquisition contact piece exposed on the back. It contains a circular magnet inside, being thinnest at the edges and gradually thickening inwards in an arc. The connecting female head is integrated with the back, and the acquisition contact piece extends from the inside into the acquisition female head. The main body material uses flame-retardant engineering plastics meeting V0 UL94 standards, such as polycarbonate (PC) / acrylonitrile-butadiene-styrene (ABS) alloy or nylon reinforced with glass fiber, ensuring high strength, high toughness, and flame retardancy. The permanent magnet and acquisition pad are encased in the insulating shell, with only the necessary metal contact surfaces exposed to prevent accidental short circuits and electric shock. The colors differ according to the connection position of the acquisition head: red for the positive terminal and black for the negative terminal. For the acquisition box, the positive terminal is yellow and the negative terminal is blue.

[0032] A method for operating a quick-connect device for the acquisition head of a magnetic battery tester, comprising the following steps: Step 1: Connect the main unit of the tester to the female connector using a high-quality shielded cable; Step 2: Place the connecting device on the battery terminal screw, and achieve a fixed connection with the battery terminal screw through the strong permanent magnet inside the high conductivity contact piece. At the same time, the screw of the battery terminal is connected through the contact surface of the high conductivity contact piece. Step 3: Turn on the tester and test the battery.

[0033] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention includes, but is not limited to, the embodiments described in the specific implementation. Any other implementations derived by those skilled in the art based on the technical solutions of this invention are also within the scope of protection of this invention.

Claims

1. A quick-connect device for the acquisition head of a magnetic battery tester, characterized in that: It includes a high-conductivity contact piece, a connecting female connector, and an integrated insulating housing. The high-conductivity contact piece is installed inside the integrated insulating housing, and the protruding end of the high-conductivity contact piece connects to the connecting female connector. The high-conductivity contact piece is used for low-resistance, stable, and non-destructive electrical contact with the battery. The connecting female connector is used to connect to the test instrument host through a high-quality shielded cable to achieve fast connection and signal transmission. The integrated insulating housing is used for safety shielding.

2. The quick connection device for the magnetic battery tester acquisition head according to claim 1, characterized in that: The contact surface of the high-conductivity contact piece that makes electrical contact with the battery uses gold-plated copper, where the gold layer prevents oxidation and the copper-based material ensures excellent conductivity. The high-conductivity contact piece is embedded inside an integrated insulating shell.

3. The quick connection device for the magnetic battery tester acquisition head according to claim 1, characterized in that: The highly conductive contact piece is gourd-shaped, with a powerful permanent magnet placed inside. The bottom of the gourd is the contact surface that makes electrical contact with the battery, and the voltage is collected by contacting the battery terminals. The handle of the gourd is embedded in the connecting female connector and is connected to the acquisition box through an external test cable.

4. The quick connection device for the magnetic battery tester acquisition head according to claim 1, characterized in that: The powerful permanent magnet is a neodymium iron boron magnet, which is embedded in a highly conductive contact piece.

5. The quick connection device for the magnetic battery tester acquisition head according to claim 1, characterized in that: One end of the female connector is connected to a highly conductive contact piece, and the other end of the female connector is connected to the main unit of the test instrument through a high-quality shielded wire, so as to achieve fast connection and signal transmission.

6. The quick connection device for the magnetic battery tester acquisition head according to claim 1, characterized in that: The integrated insulating housing is shaped like a thumbtack, with a highly conductive contact piece exposed on the back. The integrated insulating housing is thinnest at the edges and gradually thickens inward in an arc shape. The connecting female head and the back are integrated into one structure, and the acquisition contact piece extends from the inside to the inside of the acquisition female head.

7. A method for operating the quick connection device for the acquisition head of a magnetic battery tester according to any one of claims 1 to 6, characterized in that: The following steps: Step 1: Connect the main unit of the tester to the female connector using a high-quality shielded cable; Step 2: Place the connecting device on the battery terminal screw, and achieve a fixed connection with the battery terminal screw through the strong permanent magnet inside the high conductivity contact piece. At the same time, the screw of the battery terminal is connected through the contact surface of the high conductivity contact piece. Step 3: Turn on the tester and test the battery.

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