Low-resistance battery internal resistance test pen

Abstract

The invention relates to the technical field of electrical variable testing, in particular to a low-resistance-value battery internal resistance testing pen which comprises an insertion plate, and the bottom of a pen holder is connected with the insertion plate. The probe is provided with a slot, the plugboard is matched with the slot, and the slot enables the upper part of the probe to deform; the clamping hook part is fixedly connected to the probe, and the clamping hook part is matched with the pen holder; a reserved opening is formed in the upper portion of the inserting plate. And the electric connecting wire is arranged in the pen holder, and the electric connecting wire is connected with the probe. According to the invention, the probe and the penholder are fixedly mounted in a split manner, so that the probe can be replaced timely and conveniently, and the measurement accuracy of the probe is ensured; according to the fixing means, the inserting plate is matched with the probe in an inserting mode, the clamping hook part is used for improving the matching stability, in other words, it is guaranteed that the probe can be stably fixed when the dismounting and mounting function is added, and the using stability of the probe fixing device is guaranteed.

Description

Technical Field

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

[0002] A resistance test pen is a resistance test device based on Ohm's law. It applies a constant voltage to the resistor being tested and measures the current flowing through the component being tested. The resistance value of the resistor being tested can be calculated according to Ohm's law (R=V / I).

[0003] As a key component that directly contacts the resistance being measured, the conductivity and contact stability of the probe directly affect the accuracy of the measurement results. However, in actual applications, it is found that the probe of the test pen will wear and oxidize with use, reducing its contact area, increasing its contact resistance, and increasing its contact impedance, which will lead to increased measurement errors and reduced test accuracy. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides a low-resistance battery internal resistance test pen with a probe that can be easily disassembled for replacement and maintenance.

[0005] The technical solution includes: pen holder; A probe, wherein the pen holder is connected with the probe; It also includes: an insert plate, the bottom of the pen holder is connected with the insert plate; The probe is provided with a slot, the plug plate cooperates with the slot, and the slot enables the upper part of the probe to be deformed; A hook portion, the probe is fixedly connected with the hook portion, and the hook portion will cooperate with the pen holder; A reserved opening is provided on the upper portion of the plugboard; An electrical connection is provided in the pen body, and the electrical connection is connected to the probe.

[0006] In some embodiments, the plug board is insulated, the slot divides the probe into two parts, the two parts of the probe are only connected at the tip of the probe, and the probe is hollow.

[0007] In some embodiments, the plug plate is rotatably connected to the bottom of the pen holder, and further comprises: a first resetting member, wherein the plug plate and the pen holder are fixedly connected with the first resetting member; A moving ring, wherein the pen holder is slidably connected with the moving ring, and the electrical wiring is fixedly connected to the moving ring; A contact head, the bottom of the movable ring is fixedly connected with the contact head, the electrical wiring is electrically connected to the contact head, and the electrical wiring is respectively connected to the two parts of the probe through the contact head; An insulating stop block, wherein the bottom of the movable ring is fixedly connected with an insulating stop block; A second resetting member, wherein the pen holder and the movable ring are fixedly connected with the second resetting member; A control panel is fixedly connected to the movable ring, and the control panel is arranged outside the pen holder.

[0008] In some embodiments, the control panel is configured to be arc-shaped, and friction patterns are provided on the control panel.

[0009] In some embodiments, it also includes: a resistance bar, the bottom of the pen barrel is fixedly connected with a resistance bar, and the resistance bar is arranged at the reserved opening.

[0010] In some embodiments, it also includes: a clamping ring, the upper part of the pen body is fixedly connected with the clamping ring, and the probe can be fixed on the clamping ring in a clamping manner.

[0011] In some embodiments, it also includes: a protective tube, the pen body is slidably connected to the protective tube, and the protective tube is arranged outside the clamping ring.

[0012] In some embodiments, it also includes: a gripping portion, the gripping portion is fixedly connected to the pen shaft, and the gripping portion is configured as an arc-shaped finger groove.

[0013] Beneficial effects of the present invention: The present invention sets the probe and the pen holder to be fixedly installed separately, so that the present invention can replace the probe in time and conveniently, ensuring the measurement accuracy of the present invention; the fixing means of the present invention is to use the plug-in matching of the plug-in board and the probe, and use the hook part to increase the matching stability, that is, the present invention ensures that the probe can be stably fixed when the disassembly function is added, thereby ensuring the use stability of the present invention. The present invention improves the measurement accuracy of the present invention by changing the gathering position of the electrical wiring, reducing the resistance value 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

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 The figure is a schematic diagram of the position structure of the pen holder, probe, plug board and control board in the present invention.

[0017] Figure 3This is a separation diagram of the connection structure of the pen holder, probe, plug board and contact head in the present invention.

[0018] Figure 4 It is a cross-sectional view of the connection structure after the contact head and the probe are docked in the present invention.

[0019] Figure 5 It is a schematic diagram of the connection structure of the gripping portion, the protective tube and the clamping ring in the present invention.

[0020] The markings in the accompanying drawings are: 1-pen body; 2-probe; 201-slot; 202-hook; 3-plug board; 301-reserved opening; 302-connecting block; 303-connecting ring; 4-first reset member; 5-electrical wiring; 6-moving ring; 7-contact head; 8-insulating block; 9-second reset member; 10-control board; 11-resistance bar; 12-clamp ring; 13-protective tube; 14-connecting plate; 15-slide groove; 16-grip. DETAILED DESCRIPTION

[0021] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the inventive product is usually placed when used. This 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. Therefore, it cannot be understood as a limitation on the present invention.

[0024] Embodiment: A low resistance battery internal resistance test pen, see Figure 1-Figure 4, including: a pen body 1; a probe 2, the probe 2 is separately fixedly installed at the bottom of the pen body 1; a slot 201 is opened on the probe 2, the slot 201 allows the upper part of the probe 2 to be deformed, and the slot 201 divides the probe 2 into two parts, the two parts of the probe 2 are only gathered at the tip 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 upper part of the probe 2 is fixedly installed with the hook part 202; an inserting plate 3, the bottom of the pen body 1 is rotatably installed with the inserting plate 3, the inserting plate 3 is insulated, and the inserting plate 3 cooperates with the slot 201 so that the probe 2 can be inserted into the inserting plate 3, and the bottom of the pen body 1 is provided with an installation cavity, when the probe 2 is inserted into the inserting plate 3, the hook part 202 of the probe 2 will be in contact with the pen body 1 The mounting cavity cooperates to realize the split fixed installation of the probe 2 and the pen body 1; a reserved opening 301 is provided on the upper part of the plug plate 3, and the probe 2 is pressed at the position of the reserved opening 301 to deform the upper part of the probe 2, so that the hook part 202 of the probe 2 is disengaged from the mounting cavity of the pen body 1; a connecting block 302 is fixedly installed on the bottom of the pen body 1; a connecting ring 303 is fixedly installed on the top of the plug plate 3, and the connecting ring 303 and the connecting block 302 are rotatably installed to realize the rotatable installation of the plug plate 3 and the pen body 1; a first reset member 4 is fixedly installed between the connecting ring 303 and the pen body 1, and the first reset member 4 is a tension spring, which is used to reset the plug plate 3 after the plug plate 3 is rotated.

[0025] See also Figure 1-Figure 4 , further comprising: an electric wiring 5, an electric wiring 5 is arranged in the pen body 1, and the electric wiring 5 is used to provide a test voltage for the test pen; a moving ring 6, a moving ring 6 is slidably installed in the pen body 1, the moving ring 6 moves up and down, and the electric wiring 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, the two contact heads 7 are respectively in contact with two parts of the probe 2, and the two contact heads are respectively electrically connected to the two electric wirings 5; an insulating abutment 8, an insulating abutment 8 is fixedly installed at the bottom of the moving ring 6, the insulating abutment 8 can be inserted into the slot 201, so that the contact head 7 is in contact with the probe 2, and when the insulating abutment 8 is misaligned with the slot 201, the insulating abutment 8 will directly abut against the probe 2, so that the contact head 7 is out of contact with the probe 2; A second reset member 9 is fixedly installed between the pen body 1 and the movable ring 6. The second reset member 9 is a compression spring, which is used to reset the movable ring 6 after the movable ring 6 moves; a control panel 10 is fixedly installed on the movable ring 6, and the control panel 10 is arranged outside the pen body 1. The control panel 10 is arranged in an arc shape to fit the arc of the finger. The control panel 10 is provided with friction patterns for increasing the friction coefficient to prevent the control inconvenience caused by finger slippage when using the control panel 10; a resistance strip 11 is fixedly installed on the bottom of the pen body 1, and the resistance strip 11 is arranged correspondingly at the reserved opening 301 to prevent the probe 2 from being separated from the pen body 1 due to accidental squeezing. The resistance strip 11 will also contact with the plug board 3 to limit the rotation angle of the plug board 3.

[0026] When using this test pen, put the probe 2 in contact with the battery, then pass a constant voltage through the probe 2 and the battery through the electrical connection 5, and then test the current value flowing through the electrical connection 5 to calculate the resistance value of the battery. Compared with the traditional test pen, its connecting wire is directly connected to the tail of the test pen, which is equivalent to its connecting wire being gathered at the tail end of its probe. Therefore, when using the traditional test pen for detection, the entire resistance value of its probe will be directly incorporated into the detection result, resulting in a certain error in the detection result; on the other hand, the two electrical connections 5 of this test pen are respectively connected to the two parts of the probe 2 through two contact heads, so that the electrical connection 5 will eventually be gathered at the tip of the probe 2. Therefore, the resistance value incorporated into the detection result on this test pen is only the tip of the probe 2, which greatly reduces the resistance value influence caused by the probe 2 on the detection result and improves the detection accuracy of this test pen.

[0027] When the probe 2 is worn or oxidized after being used for a period of time, it is necessary to replace the probe 2: First, use the control board 10 to move the moving ring 6 upward, the second reset member 9 is compressed, and the insulating block 8 is moved out of the slot 201, so that the insulating block 8 no longer restricts the probe 2, and the first reset member 4 is restored, and the plug board 3 and the probe 2 are rotated; then, the plug board 3 is rotated to abut against the abutment bar 11, limiting the position of the plug board 3 after reset, so that the insulating block 8 is misaligned with the slot 201. Therefore, when the control board 10 is released, the second reset member 9 moves the insulating block 8 to abut against the probe 2, so that the contact head 7 is out of contact with the probe 2, thereby disconnecting the probe 2.

[0028] Secondly, the upper part of the probe 2 is pressed at the position of the reserved opening 301 to deform the upper part of the probe 2 and reduce its volume, so that the hook part 202 can be disengaged from the installation cavity of the pen body 1, and then the probe 2 can be moved downward to conveniently and quickly remove the probe 2 from the pen body 1.

[0029] Then, take out the new probe 2 for replacement and insert the new probe 2 into the plug board 3. During the process, the upper part of the probe 2 will be squeezed and deformed by the pen barrel 1, so that the hook part 202 enters the installation cavity of the pen barrel 1. After the hook part 202 completely enters the installation cavity of the pen barrel 1, the upper part of the probe 2 can restore its deformation, so that the hook part 202 cooperates with the installation cavity of the pen barrel 1, so as to stably install the new probe 2 on the pen barrel 1.

[0030] Finally, the plug board 3 and the probe 2 are rotated, the first reset member 4 is stretched, and the plug board 3 is rotated to align the insulating block 8 with the slot 201 of the probe 2. The second reset member 9 moves the movable ring 6 downward, and the insulating block 8 is inserted into the slot 201 of the probe 2 to fix the probe 2 and the plug board 3. At the same time, the contact head 7 is brought into contact with the probe 2 to connect the probe 2. Therefore, when using this test pen, the electrical connection 5 can supply voltage to the battery under test through the movable ring 6, the contact head 7 and the probe 2 in sequence.

[0031] See also Figure 1 and Figure 5 , and also includes: a clamping ring 12, a clamping ring 12 is fixedly installed on the upper part of the pen body 1, and the probe 2 can be fixed on the clamping ring 12 in a clamping manner, so that the replacement probe 2 can be stored on the test pen, and the replaced new probe 2 can be stored on the test pen, making the replacement of the probe 2 more convenient and quick, so as to manage the test pen; a protective tube 13, a protective tube 13 is slidably installed on the pen body 1, and the protective tube 13 is arranged outside the clamping ring 12 to protect the probe 2 stored on the clamping ring 12 and ensure the quality of the replaced new probe 2; a connecting plate 14, a connecting plate 14 is fixedly installed inside the protective tube 13; a sliding groove 15 is opened on the pen body 1, and the connecting plate 14 and the sliding groove 15 are slidably installed to realize the sliding connection between the protective tube 13 and the pen body 1; a gripping part 16, a gripping part 16 is fixedly installed on the pen body 1, and the gripping part 16 is arranged as an arc-shaped finger groove type, so that people can grip the pen body 1 comfortably and stably, and the use of the test pen is convenient.

[0032] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in 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), wherein the electrical connection (5) is connected to the probe (2), and wherein the electrical connection (5) is used to provide a test voltage to the object to be tested via the probe (2).

2. A low resistance battery internal resistance tester according to claim 1, characterized in that: 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).

3. A low resistance battery internal resistance tester according to claim 2, 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).

4. A low-resistance battery internal resistance tester according to claim 3, 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).

5. A low-resistance battery internal resistance tester according to claim 4, 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).

6. A low-resistance battery internal resistance tester according to claim 5, 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.

7. A low resistance battery internal resistance tester according to claim 6, 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).

8. A low-resistance battery internal resistance tester according to claim 7, 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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