A battery open circuit voltage detection device

Abstract

The present invention discloses a battery open circuit voltage detection device, comprising a detection block and a detection head arranged on the detection block, wherein the left and right sides of the detection block are respectively hinged with V-shaped arms, and the lower support arms of the V-shaped arms are provided with right-angled rulers. The detection block is movably matched with a push rod, and the top of the push rod is provided with a top limit structure, and the bottom of the push rod is provided with a bottom limit structure, and a telescopic spring is sleeved on the push rod. A pair of push rods cooperate with a pair of V-shaped arms in a one-to-one manner, and the top limit structure of the push rod is against the top support arm of the V-shaped arm. The present invention utilizes the descending action and descending time of the detection block to make the push rod rise relative to the detection block, drive the pair of V-shaped arms to swing toward each other, and a pair of right-angled rulers drive the battery to translate so that the positive and negative contacts of the battery are accurately aligned with the pair of detection heads on the detection block, thereby ensuring the accuracy of the detection data and effectively avoiding the arc generated between the detection head and the positive and negative contacts of the battery to burn the detection head or the positive and negative contacts.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, and in particular to a detection device for a storage battery. Background Art

[0002] The battery has positive and negative contacts on the top, which may be diagonally distributed on the battery. The battery has the advantages of portability, stable operation, long life, low cost and easy manufacturing. The produced battery needs to be tested and qualified before it can be shipped out of the factory for use.

[0003] The patent document with application publication number CN 117250535 A discloses a battery open circuit voltage measuring device. When the battery is transported by the main roller to contact the push plate, as the battery continues to move forward, the battery will squeeze the push plate, causing the push plate spring to be squeezed, thereby driving the horizontal rack to slide, thereby driving the conversion gear to rotate, thereby driving the lower rack and the lifting rod to slide downward along the push frame, thereby driving the detection block and the detection head to slide downward, when the detection head contacts the battery contacts, the detection spring is slightly compressed, and the battery open circuit voltage is measured through the detection head. Among them, the detection block and the detection head slide downward, and the detection head may not be able to accurately and stably contact the positive and negative contacts of the battery, resulting in inaccurate detection data, and arcs are generated between the detection head and the positive and negative contacts of the battery, burning the detection head or the positive and negative contacts. Summary of the invention

[0004] The technical problem solved by the present invention is as follows: When detecting the open-circuit voltage of a battery, the detection head in the prior art moves downward and may not be able to accurately and stably contact the positive and negative contacts of the battery, resulting in inaccurate detection data, or even arcing between the detection head and the positive and negative contacts of the battery, thereby burning the detection head or the positive and negative contacts.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a battery open circuit voltage detection device, comprising a detection block, a detection head arranged on the detection block, the detection block is connected to a lifting mechanism, the detection head is electrically connected to a detection instrument through a wire, and V-shaped arms are hinged on the left and right sides of the detection block respectively; one arm of any V-shaped arm is located above the detection block and is set as an upper arm, and the other arm of any V-shaped arm is located below the detection block and is set as a lower arm; the lower arm is provided with a right angle rule. The detection block is provided with a pair of guide holes, and a push rod is movably matched in each guide hole, and a top limit structure is provided at the top of the push rod, and the top limit structure is located above the detection block, and a bottom limit structure is provided at the bottom of the push rod, and a telescopic spring is sleeved on the push rod, and the telescopic spring is located between the bottom limit structure and the bottom surface of the detection block. A pair of push rods cooperate with a pair of V-shaped arms in a one-to-one manner, and the top limit structure of the push rod is against the top arm of the V-shaped arm.

[0006] According to the above technical solution, initially, under the action of the telescopic spring and gravity, the push rod descends to the lowest position, and the top limit structure presses against the detection block. Under the action of gravity, the upper arm presses against the top limit structure of the push rod, and the lower arm is in an outward swing state below the detection block. The robot or the transmission device or the worker transfers the battery to be tested to the bottom of the detection block. At this time, the positive and negative contacts of the battery and the two detection heads on the bottom surface of the detection block are not accurately aligned up and down, but there is a deviation. Afterwards, driven by the lifting mechanism (such as a cylinder, a screw mechanism), the detection block descends, and the bottom end of the push rod first contacts the upper surface of the battery, and the push rod is pushed against the upper surface of the battery, so that the push rod rises relative to the detection block. The top limit structure of the rising push rod pushes the upper arm of the V-shaped arm, and the V-shaped arm rotates, so that the lower arms of a pair of V-shaped arms close together, with a tendency to clamp the battery.

[0007] Since the positive and negative contacts of the battery are not exactly under the pair of detection heads, but there is a position deviation, the square of one of the lower arms of the pair of V-shaped arms that are closed together must first contact the vertical edge of the battery and push the battery to move horizontally. The battery moves horizontally between the pair of opposite right-angled rulers, and the pair of right-angled rulers move together, which can push the battery to move horizontally and put the battery in an accurate position, where the positive and negative contacts of the battery are aligned with the pair of detection heads.

[0008] The linear rise of the push rod drives the V-shaped arm to rotate. When the top limit structure of the push rod is at the end of the upper arm and is about to be separated from the end of the upper arm, the top limit structure drives the V-shaped arm to reach the maximum rotation angle. The detection block continues to descend, and the push rod continues to rise relative to the detection block, and the top limit structure separates from the upper arm upward. When the V-shaped arm reaches the maximum rotation angle, the lower arm is in a plumb state, and a pair of lower arms clamp a pair of vertical diagonal edges of the battery to put the battery in an accurate position, which aligns the positive and negative contacts of the battery with a pair of detection heads. Since the top limit structure separates from the upper arm upward, the push rod no longer drives the V-shaped arm to rotate as the detection block continues to descend. Finally, the pair of detection heads that descend with the detection block accurately contact the positive and negative contacts of the battery.

[0009] After the top limit structure drives the V-shaped arm to reach the maximum rotation angle, the detection block continues to descend, and the top rod continues to rise relative to the detection block, and the top limit structure detaches upward from the upper arm. Since the outer diameter of the top limit structure is larger than the outer diameter of the main body of the top rod, after the top limit structure detaches upward from the upper arm, the upper arm will swing back to a certain angle under the action of gravity, so that the pair of lower arms will swing outward at a certain angle instead of being in a plumb state. When the battery has been moved to the correct position, the upper arm swings back at a certain angle, so that the pair of lower arms no longer clamp the battery, which is conducive to the detection block continuing to descend smoothly, and the pair of lower arms will not rub against the battery and cause damage to the battery.

[0010] As an option, the top limiting structure is spherical, and the ball diameter of the top limiting structure is larger than the outer diameter of the top rod. The spherical top limiting structure can reduce the friction resistance between it and the upper support arm.

[0011] As an improvement, an arc groove is formed on the upper support arm to cooperate with the top limiting structure. In this way, the spherical top limiting structure slides along the arc groove, and the arc groove serves as a guide and limit for the top limiting structure, so that the V-shaped arm can swing stably and avoid deviation of the V-shaped arm during rotation, which is beneficial for the positive and negative contacts of the battery to be accurately located directly below a pair of detection heads.

[0012] As an option, the angle between the upper arm and the lower arm is 150 degrees.

[0013] Grooves are provided on both left and right sides of the detection block, and the V-shaped arms are hinged in the grooves through hinge shafts.

[0014] The upper support arm is provided with a counterweight groove, in which a counterweight is installed, so that the upper support arm can stably swing toward the push rod under the action of gravity and counteract the push rod.

[0015] The present invention utilizes the descending action and descending time of the detection block to make the top rod rise relative to the detection block, drive a pair of V-shaped arms to swing toward each other, and a pair of right-angled rulers drive the battery to translate so that the positive and negative contacts of the battery are accurately aligned with a pair of detection heads on the detection block, thereby ensuring the accuracy of the detection data and effectively avoiding the arc between the detection head and the positive and negative contacts of the battery and the ablation of the detection head or the positive and negative contacts. Among them, the design of the spherical top limit structure allows the pair of right-angled rulers to stay away from the battery after the battery is in the correct position, which is not only conducive to the detection block to continue to descend smoothly, but also can avoid the friction between the right-angled ruler and the battery and damage to the battery during the process of the detection block continuing to descend. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings:

[0017] Figure 1It is a schematic diagram of a battery open circuit voltage detection device;

[0018] Figure 2 It is a front view of the battery open circuit voltage detection device;

[0019] Figure 3 The schematic diagram is a diagram of placing the battery under the detection device;

[0020] Figure 4 for Figure 3 The main view of

[0021] Figure 5 is a schematic diagram of the V-shaped arm 20 reaching the maximum rotation angle;

[0022] Figure 6 for Figure 5 The main view of

[0023] Figure 7 It is a schematic diagram of the V-shaped arm 20 rotating at a certain angle;

[0024] Figure 8 for Figure 7 main view.

[0025] Explanation of symbols in the figure:

[0026] 10. Detection block; 11. Detection head; 110. The jack on the top of the detection head is convenient for connecting with the wire; 12. Groove; 13. Hole for installing the hinge shaft;

[0027] 20. V-shaped arm; 21. upper arm; 22. lower arm; 23. square rule; 24. counterweight; 25. arc groove;

[0028] 30. ejector rod; 31. top limit structure; 32. bottom limit structure; 33. telescopic spring;

[0029] 90. Battery; 91. Positive contact; 92. Negative contact. DETAILED DESCRIPTION

[0030] Combination Figure 1 , Figure 2 A battery open circuit voltage detection device comprises a detection block 10 and a detection head 11 arranged on the detection block. The detection block is connected to a lifting mechanism, and the detection head is electrically connected to a detection instrument through a wire. V-shaped arms 20 are hinged on the left and right sides of the detection block respectively; one arm of any V-shaped arm is located above the detection block and is set as an upper arm 21, and the other arm of any V-shaped arm is located below the detection block and is set as a lower arm 22; the lower arm is provided with a right-angle rule 23.

[0031] The detection block is provided with a pair of guide holes, each of which is movably fitted with a push rod 30, the top of the push rod is provided with a top limiting structure 31, the top limiting structure is located above the detection block, the bottom of the push rod is provided with a bottom limiting structure 32, and a telescopic spring 33 is sleeved on the push rod, and the telescopic spring is located between the bottom limiting structure and the bottom surface of the detection block.

[0032] A pair of push rods cooperate with a pair of V-shaped arms in a one-to-one manner, and the top limiting structure of the push rods abuts against the top supporting arms of the V-shaped arms.

[0033] Grooves 12 are provided on both left and right sides of the detection block 10, and the V-shaped arms 20 are hinged in the grooves via hinge shafts.

[0034] The upper support arm 21 is provided with a counterweight groove, in which a counterweight 24 is installed.

[0035] The top limiting structure 31 is spherical, and the spherical diameter of the top limiting structure is larger than the outer diameter of the top rod 30 .

[0036] The upper support arm 21 is provided with an arc-shaped groove 25 which cooperates with the top limiting structure 31 .

[0037] The top rod 30 rises linearly to drive the V-shaped arm 20 to rotate. After the top limiting structure 31 drives the V-shaped arm to reach the maximum rotation angle, it separates upward from the upper support arm 21. When the V-shaped arm reaches the maximum rotation angle, the lower support arm 22 is in a vertical state.

[0038] refer to Figures 3 to 8 In actual operation, under the action of the telescopic spring 33 and gravity, the push rod 30 drops to the lowest position, and the top limit structure 31 presses against the detection block 10. Under the action of gravity, the upper arm 21 presses against the top limit structure 31 of the push rod, and the lower arm 22 is in an outward swing state below the detection block 10. The robot or transmission device or worker transfers the battery 90 to be tested to the bottom of the detection block 10. At this time, the positive and negative contacts of the battery and the two detection heads 11 on the bottom surface of the detection block are not accurately aligned up and down, but there is a deviation. Afterwards, driven by the lifting mechanism, the detection block 10 descends, and the bottom end of the push rod 30 first contacts the upper surface of the battery, and the upper surface of the battery pushes the push rod, causing the push rod to rise relative to the detection block. The top limiting structure 31 of the rising push rod 30 pushes up the upper arm 21 of the V-shaped arm, and the V-shaped arm 20 rotates, so that the lower arms 22 of a pair of V-shaped arms close together, with a tendency to clamp the battery 90 .

[0039] Since the positive and negative contacts of the battery 90 are not exactly located directly below the pair of detection heads, but there is a position deviation, therefore, the lower arm 22 of the pair of V-shaped arms that are closed together must have a square 23 of the lower arm that first contacts the vertical edge of the battery and pushes the battery to move horizontally. The battery moves horizontally between the pair of opposite squares, and the pair of squares move closer together, which can push the battery to move horizontally and put the battery in an accurate position, which makes the positive and negative contacts of the battery aligned with the pair of detection heads 11 up and down.

[0040] refer to Figure 5 , Figure 6 , the linear rise of the push rod 30 drives the V-shaped arm 20 to rotate. When the top limit structure 31 of the push rod is at the end of the upper support arm 21 and is about to be separated from the end of the upper support arm, the top limit structure 31 drives the V-shaped arm 20 to reach the maximum rotation angle. The detection block 10 continues to descend, the push rod 30 continues to rise relative to the detection block, and the top limit structure 31 is separated from the upper support arm 21 upward. When the V-shaped arm reaches the maximum rotation angle, the lower support arm 22 is in a plumb state, and a pair of lower support arms clamp a pair of vertical diagonal edges of the battery, so that the battery is in an accurate position, which makes the positive and negative contacts of the battery and the pair of detection heads aligned up and down. Since the top limit structure 31 is separated from the upper support arm 21 upward, the push rod 30 no longer drives the V-shaped arm 20 to rotate as the detection block 10 continues to descend. Finally, the pair of detection heads 11 that descend with the detection block 10 accurately contact the positive and negative contacts of the battery 90.

[0041] refer to Figure 7 , Figure 8 After the top limiting structure 31 drives the V-shaped arm 20 to reach the maximum rotation angle, the detection block 10 continues to descend, and the top rod 30 continues to rise relative to the detection block, and the top limiting structure detaches from the upper support arm 21 upward. Since the outer diameter of the top limiting structure 31 is larger than the outer diameter of the main body of the top rod, after the top limiting structure detaches from the upper support arm 21 upward, under the action of gravity, the upper support arm 21 will swing back to a certain angle, so that the pair of lower support arms 22 will swing outward at a certain angle instead of being in a plumb state. When the battery 90 has been moved to the correct position, the upper support arm swings back at a certain angle, so that the pair of lower support arms 22 no longer clamp the battery 90, which is conducive to the detection block 10 to continue to descend smoothly, and the pair of lower support arms 22 will not rub against the battery and cause damage to the battery.

[0042] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A battery open circuit voltage detection device, comprising a detection block (10), a detection head (11) arranged on the detection block, the detection block is connected to a lifting mechanism, and the detection head is electrically connected to a detection instrument through a wire, characterized in that: V-shaped arms (20) are hingedly connected to the left and right sides of the detection block respectively; one arm of any V-shaped arm is located above the detection block and is set as an upper arm (21); the other arm of any V-shaped arm is located below the detection block and is set as a lower arm (22); the lower arm is provided with a right angle rule (23); The detection block is provided with a pair of guide holes, each guide hole is movably fitted with a push rod (30), the top of the push rod is provided with a top limit structure (31), the top limit structure is located above the detection block, the bottom of the push rod is provided with a bottom limit structure (32), the push rod is sleeved with a telescopic spring (33), and the telescopic spring is located between the bottom limit structure and the bottom surface of the detection block; A pair of push rods cooperate with a pair of V-shaped arms in a one-to-one manner, and the top limiting structure of the push rods abuts against the top supporting arms of the V-shaped arms.

2. The battery open circuit voltage detection device according to claim 1, characterized in that: Grooves (12) are provided on both left and right sides of the detection block (10), and the V-shaped arms (20) are hinged in the grooves via hinge shafts.

3. The battery open circuit voltage detection device according to claim 1, characterized in that: The upper support arm (21) is provided with a counterweight groove, in which a counterweight (24) is installed.

4. The battery open circuit voltage detection device according to claim 1, characterized in that: The top limiting structure (31) is spherical, and the spherical diameter of the top limiting structure is larger than the outer diameter of the top rod (30).

5. The battery open circuit voltage detection device as claimed in claim 4, characterized in that: The upper support arm (21) is provided with an arc-shaped groove (25) which cooperates with the top limiting structure (31).

6. The battery open circuit voltage detection device according to claim 1, characterized in that: The top rod (30) rises linearly to drive the V-shaped arm (20) to rotate, and after the top limit structure (31) drives the V-shaped arm to reach the maximum rotation angle, it separates upward from the upper support arm (21); when the V-shaped arm reaches the maximum rotation angle, the lower support arm (22) is in a vertical state.

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