Battery current measuring device

Abstract

The utility model discloses a battery current measuring device, which relates to the technical field of current measurement, and comprises a shell, an ampere meter is arranged on the shell, two measuring arms which are symmetrically arranged are rotatably arranged at one end of the shell, a through hole is formed in one end, far away from the shell, of each measuring arm, a rotating block is rotatably arranged in each through hole, and the ampere meter is arranged on the shell. A measuring contact is fixedly arranged on the rotating block, the measuring contact is electrically connected with the ampere meter, a driving assembly for driving the rotating block to rotate is arranged on the measuring arm, and the rotating block rotates to store the measuring contact into the through hole. The measuring contact is prevented from being damaged due to collision when the device is carried, the occupied space is reduced, and the device is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of current measurement, in particular to a battery current measuring device. Background Art

[0002] A battery is a cup, tank, or other container, or part of a composite container, that contains an electrolyte solution and metal electrodes to generate an electric current. It converts chemical energy into electrical energy and has a positive and negative electrode. To understand the battery's operating status and performance, a current measuring device is needed to measure the battery's current.

[0003] Chinese patent publication CN221378094U discloses a battery voltage measurement device comprising a measuring handle with two measuring arms positioned opposite one end. Each measuring arm is detachably mounted with a measuring contact. The measuring handle is provided with a digital voltmeter, electrically connected to the measuring contact, and shaped to match the terminal shape of the battery being tested. This device allows a single person to hold the measuring handle and measure battery voltage.

[0004] The disadvantage of the above disclosed solution is that since the measuring contact is kept perpendicular to the measuring arm, it is inconvenient to store the measuring contact, so when the measuring device is carried, the measuring contact is easily damaged by collision. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a battery current measuring device, which can fold the measuring contact into the through hole to prevent collision, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a battery current measuring device, comprising a shell, an ammeter is provided on the shell, two symmetrically arranged measuring arms are rotatably provided at one end of the shell, a through hole is provided at the end of the measuring arm away from the shell, a rotating block is rotatably provided in the through hole, a measuring contact is fixedly provided on the rotating block, the measuring contact is electrically connected to the ammeter, a driving assembly is provided on the measuring arm to drive the rotating block to rotate, and the rotating block rotates to receive the measuring contact into the through hole.

[0007] Furthermore, the driving assembly includes a first rotating shaft, which is rotatably arranged in the through hole, and is fixedly connected to the rotating block. A giveway groove is provided on the measuring arm, and a slide groove is provided on one side of the giveway groove. A slider is slidably arranged in the slide groove, and a spring is fixedly arranged between the slider and the bottom wall of the slide groove. A rack is fixedly arranged on one side of the slider, and the first rotating shaft extends into the giveway groove and is fixedly sleeved with a fifth gear, and the fifth gear is meshed with the rack. A sliding rod is fixedly arranged on the top of the rack, and the top of the sliding rod is arc-shaped. Both sides of the shell are arc surfaces, and the top of the sliding rod slides with the corresponding arc surface of the shell.

[0008] Furthermore, a cavity is provided in the shell, and four second rotating shafts are rotatably arranged in the cavity. The four second rotating shafts are respectively fixedly sleeved with a first gear, a second gear, a third gear and a fourth gear, and the first gear, the second gear, the third gear and the fourth gear are meshed in sequence. A motor is fixedly provided on the shell, and the output end of the motor is fixedly connected to one of the second rotating shafts, and the two second rotating shafts far away from each other are respectively fixedly connected to the corresponding measuring arms.

[0009] Furthermore, a battery compartment is provided in the shell, and a lithium battery is provided in the battery compartment, and the lithium battery is electrically connected to the ammeter and the motor respectively.

[0010] Furthermore, a handle is fixedly provided on the top of the shell.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Because the measuring arms are equipped with a drive assembly that drives the rotating block, rotating the rotating block retracts the measuring contacts into the through-hole. Therefore, after measurement is completed, the two measuring arms are rotated toward the housing, allowing them to rotate directly below the housing. During this process, the arcuate surface at the top of the sliding rod slides with the arcuate surface on the housing, driving the sliding rod downward. The sliding rod then drives the rack downward, which in turn rotates the fifth gear 90 degrees. The fifth gear, via the first rotating shaft, rotates the rotating block, which in turn causes the measuring contacts to flip upward 90 degrees, folding them into the through-hole. This retracts the measuring contacts into the through-hole, preventing them from being damaged by bumps when carrying the device. This also reduces the space required, making it easier to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the structural shell of the utility model;

[0015] Figure 3 This is a cross-sectional view of the measuring arm of the utility model structure;

[0016] Figure 4 For the utility model structure Figure 3 A in the enlarged view.

[0017] In the figure: 1. Housing; 2. Handle; 3. Ammeter; 4. Button; 5. Measuring arm; 6. Through hole; 7. Sliding rod; 8. Rotating block; 9. Measuring contact; 10. First rotating shaft; 11. Battery compartment; 12. First gear; 13. Second rotating shaft; 14. Second gear; 15. Third gear; 16. Fourth gear; 17. Motor; 18. Slide; 19. Rack; 20. Gap; 21. Fifth gear; 22. Slider; 23. Cavity; 24. Spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a battery current measuring device, comprising a shell 1, a handle 2 fixedly provided on the top of the shell 1, and after holding the handle 2 by hand, the shell 1 can be moved to measure the battery.

[0020] Two symmetrically arranged measuring arms 5 are rotatably mounted on one end of the housing 1. A cavity 23 is defined within one side of the housing 1, within which four second rotating shafts 13 are rotatably mounted. These four second rotating shafts 13 are equidistantly arranged in a straight line. A first gear 12, a second gear 14, a third gear 15, and a fourth gear 16 are fixedly mounted on each of these four second rotating shafts 13. These gears mesh sequentially, with the second gear 14 meshing with the first gear 12 and the third gear 15, respectively, and the third gear 15 meshing with the fourth gear 16.

[0021] A motor 17 is fixedly embedded in the housing 1 , and the output end of the motor 17 is fixedly connected to the second rotating shaft 13 on which the third gear 15 is mounted. The two second rotating shafts 13 that are spaced apart from each other extend to the outside of the cavity 23 and are fixedly connected to the corresponding measuring arms 5 .

[0022] The end of the measuring arm 5 facing away from the housing 1 defines a through hole 6 along its extension. A rotating block 8 is rotatably mounted within the through hole 6. A measuring contact 9 is fixedly mounted on the rotating block 8 and remains perpendicular to the measuring arm 5 during operation. The measuring contact 9 fits snugly within the through hole 6, allowing it to be folded into the hole. One side of the rotating block 8 is curved to prevent interference with the inner wall of the hole 6 during rotation. A drive assembly is provided on the measuring arm 5 to drive the rotating block 8. Rotation of the rotating block 8 retracts the measuring contact 9 into the through hole 6.

[0023] The drive assembly includes a first rotating shaft 10, which is rotatably mounted within the through-hole 6 and fixedly connected to the rotating block 8. A clearance groove 20 is defined on the measuring arm 5. A chute 18 is defined on one side of the clearance groove 20. A slider 22 is slidably mounted within the chute 18. A spring 24 is fixedly mounted on the bottom surface of the slider 22, and the bottom end of the spring 24 is fixedly connected to the bottom wall of the chute 18. A rack 19 is fixedly mounted on one side of the slider 22 and slidably connected to the clearance groove 20. The first rotating shaft 10 extends into the clearance groove 20 and is fixedly mounted with a fifth gear 21, which meshes with the rack 19.

[0024] The top of the rack 19 is fixed with a sliding rod 7, which can enter the slide groove 18 when it moves downward. The top of the sliding rod 7 is arc-shaped, and both sides of the housing 1 are arc surfaces. The top of the sliding rod 7 slides with the corresponding arc surface of the housing 1.

[0025] In another embodiment, the drive assembly includes a servo motor fixedly mounted on the measuring arm 5 , with its output end coaxially and fixedly connected to the first rotating shaft 10 . When the servo motor is activated, it rotates the first rotating shaft 10 , which in turn rotates the rotating block 8 , which in turn causes the measuring contacts 9 to fold into the corresponding through-holes 6 .

[0026] An ammeter 3 is embedded in the top surface of the housing 1, and two buttons 4 are also provided on the top surface of the housing 1. One button 4 is electrically connected to the ammeter 3 and is used to control the ammeter 3 on and off. The ammeter 3 is also electrically connected to the measuring contact 9. The other button 4 is electrically connected to the motor 17 and is used to control the motor 17 on and off.

[0027] A battery compartment 11 is provided in the housing 1 , and a lithium battery is provided in the battery compartment 11 . The lithium battery is electrically connected to the ammeter 3 and the motor 17 , respectively, so as to provide power to the ammeter 3 and the motor 17 .

[0028] The working principle of a battery current measuring device provided by the utility model is as follows:

[0029] During use, the staff member holds the handle 2 and starts the motor 17 and the ammeter 3 through the control button 4. The motor 17 drives the second rotating shaft 13 with the third gear 15 to rotate, thereby driving the third gear 15 to rotate. The third gear 15 drives the second gear 14 and the fourth gear 16 to rotate. The second gear 14 drives the first gear 12 to rotate. The first gear 12 and the fourth gear 16 respectively drive the corresponding second rotating shaft 13 to rotate, thereby causing the two measuring arms 5 to rotate. The measuring arm 5 drives the measuring contact 9 to rotate, thereby adjusting the distance between the two measuring contacts 9 to adapt to the distance between the positive and negative poles of different types of batteries. Then the two measuring contacts 9 are respectively brought into contact with the positive and negative poles of the battery to be measured, and the ammeter 3 can measure the current of the battery to be measured.

[0030] After the measurement is completed, the two measuring arms 5 are rotated toward the housing 1, so that the two measuring arms 5 rotate to the bottom of the housing 1. During this process, the arc surface on the top of the sliding rod 7 will slide and cooperate with the arc surface on the housing 1, driving the sliding rod 7 downward, while compressing the spring 24. The sliding rod 7 drives the rack 19 downward, and the rack 19 drives the fifth gear 21 to rotate 90 degrees. The fifth gear 21 drives the rotating block 8 to rotate via the first rotating shaft 10. The rotating block 8 drives the measuring contact 9 to flip upward 90 degrees, so that the measuring contact 9 is folded into the through hole 6. The measuring contact 9 is thus stored in the through hole 6, preventing it from being damaged by bumps when the device is carried.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery current measuring device, comprising a housing (1), characterized in that: The housing (1) is provided with an ammeter (3), and one end of the housing (1) is rotatably provided with two symmetrically arranged measuring arms (5), one end of the measuring arm (5) away from the housing (1) is provided with a through hole (6), a rotating block (8) is rotatably provided in the through hole (6), a measuring contact (9) is fixedly provided on the rotating block (8), and the measuring contact (9) is electrically connected to the ammeter (3), and a driving component for driving the rotating block (8) to rotate is provided on the measuring arm (5), and the rotating block (8) rotates to receive the measuring contact (9) in the through hole (6).

2. The battery current measuring device according to claim 1, wherein: The driving assembly comprises a first rotating shaft (10), the first rotating shaft (10) is rotatably arranged in the through hole (6), the first rotating shaft (10) is fixedly connected to the rotating block (8), a giving groove (20) is provided on the measuring arm (5), a sliding groove (18) is provided on one side of the giving groove (20), a slider (22) is slidably arranged in the sliding groove (18), a spring (24) is fixedly arranged between the slider (22) and the bottom wall of the sliding groove (18), a rack (19) is fixedly arranged on one side of the slider (22), the first rotating shaft (10) extends into the giving groove (20) and is fixedly sleeved with a fifth gear (21), the fifth gear (21) is meshed with the rack (19), a sliding rod (7) is fixedly arranged on the top of the rack (19), the top of the sliding rod (7) is arc-shaped, both sides of the shell (1) are arc surfaces, and the top of the sliding rod (7) is slidably matched with the corresponding arc surface of the shell (1).

3. The battery current measuring device according to claim 1, wherein: A cavity (23) is provided in the housing (1), and four second rotating shafts (13) are rotatably arranged in the cavity (23). A first gear (12), a second gear (14), a third gear (15), and a fourth gear (16) are fixedly sleeved on the four second rotating shafts (13), respectively. The first gear (12), the second gear (14), the third gear (15), and the fourth gear (16) are meshed in sequence. A motor (17) is fixedly provided on the housing (1), and an output end of the motor (17) is fixedly connected to one of the second rotating shafts (13). Two second rotating shafts (13) that are spaced apart from each other are fixedly connected to corresponding measuring arms (5).

4. The battery current measuring device according to claim 3, wherein: A battery compartment (11) is provided in the housing (1), and a lithium battery is provided in the battery compartment (11). The lithium battery is electrically connected to the ammeter (3) and the motor (17) respectively.

5. The battery current measuring device according to claim 1, wherein: A handle (2) is fixedly provided on the top of the housing (1).

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