A battery internal resistance test pen with a low resistance value

Abstract

The present invention relates to the technical field of electrical variable testing, and particularly relates to a battery internal resistance testing pen with a low resistance value, comprising: a plug board, the bottom of the pen rod is connected with the plug board; a slot is formed in the probe, the plug board is matched with the slot, and the upper part of the probe can be deformed by the slot; a hook part, the probe is fixedly connected with the hook part, and the hook part will cooperate with the pen rod; a reserved port is arranged at the upper part of the plug board; an electrical connection wire, the electrical connection wire is arranged in the pen rod, and the electrical connection wire is connected with the probe. The present invention is provided with a split-type fixed installation of the probe and the pen rod, so that the probe can be replaced timely and conveniently, ensuring the measurement accuracy of the present invention; the fixing means of the present invention is to use an insertion fit between the plug board and the probe, and use the hook part to increase the cooperation stability, that is, when the present invention is provided with an additional disassembly and assembly function, the probe can be stably fixed, thus ensuring the use stability of the present invention.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical variable testing, and particularly relates to a battery internal resistance testing pen with a low resistance value. Background Art

[0002] A resistance testing pen is a resistance value testing device based on Ohm's law. By applying a constant voltage to the resistance to be measured and measuring the current value flowing through the element to be measured, the resistance value of the resistance to be measured can be calculated according to Ohm's law (R = V / I).

[0003] As a key component directly contacting the resistance to be measured, the conductivity and contact stability of the probe directly affect the accuracy of the measurement result. However, it is found in practical applications that the probe of the testing pen will be worn and oxidized during use, reducing its contact area, increasing its contact resistance, and increasing its contact impedance, thereby leading to an increase in measurement error and a decrease in test accuracy. Summary of the Invention

[0004] In view of the defects of the prior art, the present invention provides a battery internal resistance testing pen with a low resistance value that can conveniently disassemble the probe for replacement and renovation.

[0005] The technical solution includes: a pen barrel;

[0006] a probe, the probe is connected to the pen barrel;

[0007] It further includes: a plug board, the bottom of the pen barrel is connected with a plug board;

[0008] a slot is opened on the probe, the plug board cooperates with the slot, and the slot enables the upper part of the probe to be deformed;

[0009] a hook part, the hook part is fixedly connected to the probe, and the hook part will cooperate with the pen barrel;

[0010] a reserved port is arranged on the upper part of the plug board;

[0011] an electric wire, an electric wire is arranged in the pen barrel, and the electric wire is connected to the probe.

[0012] In some embodiments, the plug board is insulated, the slot divides the probe into two parts, and the two parts of the probe only converge at the tip position of the probe, and the probe is hollow.

[0013] In some embodiments, the plug board is rotatably connected to the bottom of the pen barrel, and it further includes: a first reset member, a first reset member is fixedly connected between the plug board and the pen barrel;

[0014] a moving ring, a moving ring is slidably connected in the pen barrel, and the electric wire is fixedly connected to the moving ring;

[0015] Contact head, a contact head is fixedly connected to the bottom of the movable ring, the electrical wiring is electrically connected to the contact head, and the electrical wiring is respectively connected to two parts of the probe through the contact head;

[0016] Insulating abutting block, an insulating abutting block is fixedly connected to the bottom of the movable ring;

[0017] Second reset member, a second reset member is fixedly connected between the pen barrel and the movable ring;

[0018] Control board, a control board is fixedly connected to the movable ring, and the control board is arranged outside the pen barrel.

[0019] In some embodiments, the control board is arranged in an arc shape, and friction lines are arranged on the control board.

[0020] In some embodiments, it further includes: a pressing strip, a pressing strip is fixedly connected to the bottom of the pen barrel, and the pressing strip is arranged at the reserved opening.

[0021] In some embodiments, it further includes: a clamping ring, a clamping ring is fixedly connected to the upper part of the pen barrel, and the probe can be fixedly connected to the clamping ring in a clamping manner.

[0022] In some embodiments, it further includes: a protective tube, a protective tube is slidably connected to the pen barrel, and the protective tube is arranged outside the clamping ring.

[0023] In some embodiments, it further includes: a gripping part, a gripping part is fixedly connected to the pen barrel, and the gripping part is arranged in an arc-shaped finger groove type.

[0024] Advantages of the present invention: The present invention is provided with a split-type fixed installation of the probe and the pen barrel, so that the probe of the present invention can be replaced timely and conveniently, ensuring the measurement accuracy of the present invention; the fixing means of the present invention is the insertion-type cooperation of the insertion plate and the probe, and the hook part is used to increase the cooperation stability, that is, when the present invention is provided with an additional disassembly and assembly function, the probe can be stably fixed, ensuring the use stability of the present invention. The present invention improves the measurement accuracy of the present invention by changing the converging position of the electrical wiring, reducing the resistance part of the probe incorporated into the detection result, and setting the probe to be hollow to reduce the resistance value of the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 This is a schematic structural diagram of the whole of the present invention.

[0027] Figure 2 This is a schematic positional structure diagram of the pen barrel, probe, plug board and control board in the present invention.

[0028] Figure 3 This is a separated view of the connection structure of the pen barrel, probe, plug board and contact head in the present invention.

[0029] Figure 4 This is a cross-sectional view of the connection structure after the contact head is docked with the probe in the present invention.

[0030] Figure 5 This is a schematic structural diagram of the connection structure of the gripping part, protective tube and snap ring in the present invention.

[0031] The reference signs in the drawings are: 1 - pen barrel; 2 - probe; 201 - slot; 202 - hook part; 3 - plug board; 301 - reserved port; 302 - connection block; 303 - connection ring; 4 - first reset member; 5 - electric wiring; 6 - moving ring; 7 - contact head; 8 - insulating abutting block; 9 - second reset member; 10 - control board; 11 - abutting strip; 12 - snap ring; 13 - protective tube; 14 - connecting plate; 15 - sliding groove; 16 - gripping part. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0035] Embodiment: A battery internal resistance test pen with a low resistance value. Refer to Figures 1 - 4, including: a pen shaft 1; a probe 2, the probe 2 is detachably and fixedly installed at the bottom of the pen shaft 1; a slot 201 is formed in the probe 2, the slot 201 enables the upper part of the probe 2 to be deformed, and the slot 201 divides the probe 2 into two parts, and the two parts of the probe 2 only converge at the tip position of the probe 2, and the probe 2 is hollow to reduce the resistance value of the probe 2 itself; a hook part 202, the hook part 202 is fixedly installed on the upper part of the probe 2; an insertion plate 3, the insertion plate 3 is rotatably installed at the bottom of the pen shaft 1, the insertion plate 3 is insulated, and the insertion plate 3 cooperates with the slot 201 so that the probe 2 can penetrate through the insertion plate 3. An installation cavity is provided at the bottom of the pen shaft 1. When the probe 2 penetrates through the insertion plate 3, the hook part 202 of the probe 2 will cooperate with the installation cavity of the pen shaft 1 to realize the detachably fixed installation of the probe 2 and the pen shaft 1; a reserved port 301 is provided at the upper part of the insertion plate 3. Pressing the probe 2 at the position of the reserved port 301 can deform the upper part of the probe 2, so that the hook part 202 of the probe 2 is disengaged from the installation cavity of the pen shaft 1; a connection block 302, the connection block 302 is fixedly installed at the bottom of the pen shaft 1; a connection ring 303, the connection ring 303 is fixedly installed at the top of the insertion plate 3, and the connection ring 303 is rotatably installed with the connection block 302 to realize the rotatable installation of the insertion plate 3 and the pen shaft 1; a first reset member 4, a first reset member 4 is fixedly installed between the connection ring 303 and the pen shaft 1, and the first reset member 4 is a kind of tension spring for resetting the insertion plate 3 after the insertion plate 3 rotates.

[0036] Refer to Figures 1 - 4 , further including: an electrical connection wire 5, the electrical connection wire 5 is arranged in the pen shaft 1, and the electrical connection wire 5 is used to provide a test voltage for this test pen; a moving ring 6, the moving ring 6 is slidably installed in the pen shaft 1, the moving ring 6 moves up and down, and the electrical connection wire 5 is fixedly installed with the moving ring 6; a contact head 7, two contact heads 7 are fixedly installed at the bottom of the moving ring 6, and the two contact heads 7 are respectively in contact with the two parts of the probe 2, and the two contact heads are respectively electrically connected to the two electrical connection wires 5; an insulating abutting block 8, the insulating abutting block 8 is fixedly installed at the bottom of the moving ring 6, and the insulating abutting block 8 can be inserted into the slot 201 to make the contact head 7 contact with the probe 2, and when the insulating abutting block 8 is misaligned with the slot 201, the insulating abutting block 8 will directly abut against the probe 2, so that the contact head 7 is disengaged from the probe 2; a second reset member 9, a second reset member 9 is fixedly installed between the pen shaft 1 and the moving ring 6, and the second reset member 9 is a kind of compression spring for resetting the moving ring 6 after the moving ring 6 moves; a control board 10, the control board 10 is fixedly installed on the moving ring 6, the control board 10 is arranged outside the pen shaft 1, the control board 10 is set to be arc-shaped to fit the finger arc, and the control board 10 is provided with friction lines for increasing the friction coefficient to prevent the inconvenience of control caused by the finger slipping when using the control board 10; a resisting strip 11, the resisting strip 11 is fixedly installed at the bottom of the pen shaft 1, the resisting strip 11 is correspondingly arranged at the reserved port 301 to prevent the probe 2 from being disengaged from the pen shaft 1 due to accidental extrusion, and the resisting strip 11 will also contact the insertion plate 3 to limit the rotation angle of the insertion plate 3.

[0037] When using this test pen, contact the probe 2 with the battery. Then, apply a voltage of a constant value to the probe 2 and the battery through the electrical connection wire 5, and measure the current value flowing through the electrical connection wire 5. The resistance value of the battery can then be calculated. Compared with traditional test pens, the connection wire of this test pen is directly connected to the tail of the test pen, which is equivalent to the connection wire converging at the tail end of the probe. Therefore, when using a traditional test pen for detection, the entire resistance value of the probe will be directly incorporated into the detection result, resulting in a certain error in the detection result. In contrast, for this test pen, the two electrical connection wires 5 of this test pen are respectively butted against two parts of the probe 2 through two contact heads, so that the electrical connection wires 5 will finally converge at the tip of the probe 2. Therefore, the resistance value incorporated into the detection result of this test pen is only the tip part of the probe 2, greatly reducing the resistance impact caused by the probe 2 on the detection result and improving the detection accuracy of this test pen.

[0038] When the probe 2 is worn or oxidized after being used for a period of time, the probe 2 needs to be replaced:

[0039] First, use the control board 10 to move the moving ring 6 upward. The second resetting member 9 is compressed, and the insulating abutting block 8 is removed from the slot 201, so that the insulating abutting block 8 no longer restricts the probe 2. The first resetting member 4 resumes, and the insertion plate 3 and the probe 2 are rotated. Subsequently, the insertion plate 3 is rotated until it abuts against the abutting strip 11, restricting the position of the insertion plate 3 after resetting, causing the insulating abutting block 8 to be misaligned with the slot 201. Therefore, when the control board 10 is released later, the second resetting member 9 moves the insulating abutting block 8 to abut against the probe 2, causing the contact head 7 to be disengaged from the probe 2, thereby disconnecting the probe 2.

[0040] Second, press the upper part of the probe 2 at the position of the reserved opening 301, causing the upper part of the probe 2 to deform and reduce in volume, so that the hook portion 202 can be disengaged from the installation cavity of the pen barrel 1. Subsequently, the probe 2 can be moved downward, and the probe 2 can be quickly and conveniently removed from the pen barrel 1.

[0041] Then, take a new replacement probe 2 and insert the new probe 2 into the insertion plate 3. During this process, the upper part of the probe 2 will be deformed by the pen barrel 1, causing the hook portion 202 to enter the installation cavity of the pen barrel 1. After the hook portion 202 completely enters the installation cavity of the pen barrel 1, the upper part of the probe 2 resumes its deformation, causing the hook portion 202 to cooperate with the installation cavity of the pen barrel 1 to stably install the new probe 2 on the pen barrel 1.

[0042] Finally, rotate the plug board 3 and the probe 2. The first reset member 4 is stretched. Rotate the plug board 3 until the insulating abutting block 8 is aligned with the slot 201 of the probe 2. The second reset member 9 then moves the moving ring 6 downward, inserts the insulating abutting block 8 into the slot 201 of the probe 2, fixes the probe 2 and the plug board 3, and at the same time makes the contact head 7 contact the probe 2 to connect the probe 2. Therefore, when using this test pen, the electrical connection wire 5 can supply voltage to the battery under test through the moving ring 6, the contact head 7 and the probe 2 in sequence.

[0043] Refer to Figure 1 and Figure 5 , it further includes: a snap ring 12, a snap ring 12 is fixedly installed on the upper part of the pen barrel 1, the probe 2 can be fixedly connected to the snap ring 12 in a snap-fit manner, so that replacement probes 2 can be stored on this test pen, and the new replacement probes 2 are stored on this test pen, making the replacement of the probe 2 more convenient and convenient for the management of this test pen; a protective tube 13, a protective tube 13 is slidably installed on the pen barrel 1, the protective tube 13 is arranged outside the snap ring 12 to protect the probes 2 stored on the snap ring 12 and ensure the quality of the new replacement probes 2; a connecting plate 14, a connecting plate 14 is fixedly installed inside the protective tube 13; a sliding groove 15 is formed on the pen barrel 1, and the connecting plate 14 is slidably installed in the sliding groove 15 to realize the sliding connection between the protective tube 13 and the pen barrel 1; a gripping part 16, a gripping part 16 is fixedly installed on the pen barrel 1, the gripping part 16 is set as an arc-shaped finger groove type, enabling people to comfortably and stably grip the pen barrel 1 and facilitating the use of this test pen.

[0044] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A low-resistance battery internal resistance tester, comprising: Penholder (1); A probe (2), the pen holder (1) being connected to the probe (2); It is characterized by further comprising: An inserting plate (3), the bottom of the pen holder (1) being connected to the inserting plate (3); The probe (2) is provided with a slot (201), the plug board (3) cooperates with the slot (201), so that the probe (2) can be inserted into the plug board (3), and the slot (201) enables the upper part of the probe (2) to be deformed; A hook portion (202), the probe (2) being fixedly connected with the hook portion (202), and when the probe (2) is inserted into the plug board (3), the hook portion (202) will cooperate with the pen holder (1), so that the pen holder (1) and the probe (2) are fixedly connected in a split manner; The upper portion of the plug plate (3) is provided with a reserved opening (301) to provide space for pressing the probe (2) to deform; An electrical connection (5), wherein the pen holder (1) is provided with an electrical connection (5), the electrical connection (5) being connected to the probe (2), and the electrical connection (5) being used to provide a test voltage to the object to be tested through the probe (2); The plug board (3) is insulated, the slot (201) divides the probe (2) into two parts, the two parts of the probe (2) are only connected at the tip of the probe (2), and the probe (2) is hollow to reduce the resistance value of the probe (2).

2. A low resistance battery internal resistance tester according to claim 1, characterized in that: The plug plate (3) is rotatably connected to the bottom of the pen holder (1), and further comprises: a first resetting member (4), wherein a first resetting member (4) for resetting the plug plate (3) is fixedly connected between the plug plate (3) and the pen holder (1); A movable ring (6), wherein the movable ring (6) is slidably connected inside the pen holder (1), and the electrical connection (5) is fixedly connected to the movable ring (6); A contact head (7), the bottom of the movable ring (6) being fixedly connected with the contact head (7), the electrical wiring (5) being electrically connected to the contact head (7), and the electrical wiring (5) being respectively connected to the two parts of the probe (2) through the contact head (7); An insulating abutment block (8), wherein the bottom of the movable ring (6) is fixedly connected with an insulating abutment block (8), and the insulating abutment block (8) can be inserted into the slot (201) to make the contact head (7) contact the probe (2); when the insulating abutment block (8) and the slot (201) are misaligned, the insulating abutment block (8) and the probe (2) will abut against each other, so that the contact head (7) and the probe (2) are out of contact; A second resetting member (9), wherein a second resetting member (9) for resetting the moving ring (6) is fixedly connected between the pen holder (1) and the moving ring (6); A control panel (10), wherein the movable ring (6) is fixedly connected with a control panel (10) for controlling the movement of the movable ring (6), and the control panel (10) is arranged outside the pen holder (1).

3. A low resistance battery internal resistance tester according to claim 2, characterized in that: The control panel (10) is arranged in an arc shape to fit the arc of a finger, and friction patterns for increasing the friction coefficient are arranged on the control panel (10).

4. A low-resistance battery internal resistance tester according to claim 3, characterized in that: Also includes: A stop bar (11), wherein the bottom of the pen holder (1) is fixedly connected with the stop bar (11), and the stop bar (11) is arranged at the reserved opening (301).

5. A low-resistance battery internal resistance tester according to claim 4, characterized in that: Also includes: A clamping ring (12), wherein the upper portion of the pen holder (1) is fixedly connected to the clamping ring (12), and the probe (2) can be fixed to the clamping ring (12) in a clamping manner for storage.

6. A low-resistance battery internal resistance tester according to claim 5, characterized in that: Also includes: A protection tube (13), wherein the pen holder (1) is slidably connected with a protection tube (13) for protecting the probe (2) on the clamp ring (12), and the protection tube (13) is arranged outside the clamp ring (12).

7. A low-resistance battery internal resistance tester according to claim 6, characterized in that: Also includes: A gripping portion (16), wherein the pen holder (1) is fixedly connected with the gripping portion (16), and the gripping portion (16) is arranged in an arc-shaped finger groove type.

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