Self-discharge detection device for polymer lithium battery

Abstract

The invention discloses a polymer lithium battery self-discharge detection device, and relates to the technical field of battery detection devices.The polymer lithium battery self-discharge detection device comprises a bottom supporting frame, the right side of the top of the bottom supporting frame is fixedly connected with a control box, and the left side of the interior of the control box is fixedly connected with a direct-current voltmeter; the top end of the bottom supporting frame is provided with a power connection assembly facilitating adjustment of the position of the power connection electrode. According to the polymer lithium battery self-discharge detection device, through arrangement of a vertical positioning plate, a vertical adjusting groove, a transverse adjusting plate, a threaded fixing rod, a positioning nut, a transverse adjusting groove, an electrode positioning clamp, a power connection electrode tip and an electrode connecting wire, when the device is used, a bottom electric cylinder is started regularly during testing, and a battery bearing plate is pushed to move rightwards through an electric cylinder connecting plate; the battery electrode is contacted with the power connection electrode tip, and the direct-current voltmeter measures the open-circuit voltage of the battery, so that the function of automatic power connection detection is realized, and the problem that the device does not have the function of automatic power connection detection is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection devices, in particular to a self-discharge detection device for a polymer lithium battery. Background Art

[0002] Lithium-ion polymer batteries, also known as high-polymer lithium batteries, are a type of battery chemistry characterized by high energy, compactness, and lightweight design. When stored or not in use, lithium-ion polymer batteries experience charge loss due to internal charge distribution and charge migration, a phenomenon known as self-discharge. This self-discharge leads to energy loss, thus affecting battery performance and lifespan.

[0003] Currently, the open circuit voltage method is often used to detect self-discharge of polymer lithium batteries. This is also one of the simplest and most commonly used self-discharge test methods. This method measures the polymer lithium battery to be tested. After charging to a standard voltage, the charging source is disconnected. The open circuit voltage of the battery to be tested is measured and recorded at regular intervals using a DC voltmeter. By analyzing the trend of the open circuit voltage, the self-discharge of the electronic device or battery can be determined. The actual operation process is relatively cumbersome, requiring frequent disassembly and assembly of the power connection electrodes, and it does not have the function of automatic power connection detection.

[0004] Now, a new type of polymer lithium battery self-discharge detection device is proposed to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a self-discharge detection device for a polymer lithium battery to solve the problem of the lack of automatic power-on detection function in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a polymer lithium battery self-discharge detection device, comprising a bottom support bracket, a control box fixedly connected to the right side of the top of the bottom support bracket, a DC voltmeter fixedly connected to the left side of the inside of the control box, two groups of battery support plates horizontally placed on the left side of the top of the bottom support bracket, a lower positioning plate fixedly connected to the bottom of the battery support plate, an electric cylinder connecting plate fixedly connected to the right side of the lower positioning plate, two groups of bottom electric cylinders installed at the bottom end of the bottom support bracket, two groups of sliding grooves provided at the top of the bottom support bracket, side baffles fixedly connected to the front and rear ends of the top of the battery support plate, a top cover frame sleeved on the outside of the side baffle, and a power connection component for facilitating adjustment of the electrode connection position provided at the top of the bottom support bracket.

[0007] The power connection assembly includes a vertical positioning plate, four groups of vertical adjustment slots are provided at the top of the vertical positioning plate, two groups of horizontal adjustment plates are provided on the left side of the vertical positioning plate, two groups of threaded fixing rods are fixedly connected to the right side of the horizontal adjustment plate, and positioning nuts are sleeved on the outside of the threaded fixing rods, horizontal adjustment slots are respectively provided at the upper and lower ends of the horizontal adjustment plate, two groups of electrode positioning clips are sleeved on the left side of the horizontal adjustment plate, a power connection electrode head is fixedly connected to the left side of the electrode positioning clip, and the top of the power connection electrode head is movably connected to the electrode wiring.

[0008] As a further technical solution of the present invention, the positions and sizes of the vertical adjustment slots and the threaded fixing rods correspond to each other, and the left side of the positioning nut fits in with the right side of the vertical positioning plate.

[0009] As a further technical solution of the present invention, the shape and size of the interior of the electrode positioning clamp are adapted to the shape and size of the exterior of the transverse adjustment plate, and the electrode positioning clamp can slide back and forth along the exterior of the transverse adjustment plate.

[0010] As a further technical solution of the present invention, the DC voltmeter and the electrode wiring are connected, and the control box, the DC voltmeter, the power electrode head, and the electrode wiring are electrically connected.

[0011] As a further technical solution of the present invention, an internally threaded tube seat is fixedly connected to the middle position of the top of the top cover frame, an externally threaded adjustment rod is vertically inserted into the inside of the internally threaded tube seat, the top of the externally threaded adjustment rod is fixedly connected to an adjustment handwheel, and the bottom end of the externally threaded adjustment rod is threadedly connected to a battery pressure plate.

[0012] As a further technical solution of the present invention, the internal threads of the internally threaded pipe seat and the external threads of the externally threaded adjusting rod are adapted to each other, and the vertical center lines of the top cover frame, the internally threaded pipe seat and the externally threaded adjusting rod coincide with each other.

[0013] As a further technical solution of the present invention, a plurality of positioning screw eyes are provided inside the side baffles, and two groups of hand-tightened bolts are respectively inserted into the front and rear ends of the top cover frame.

[0014] As a further technical solution of the present invention, the hand-tightening bolts pass through the top cover frame and extend into the interior of the positioning screw eyes, and the positioning screw eyes are arranged at equal intervals.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the polymer lithium battery self-discharge detection device not only realizes the function of automatic power connection detection, but also realizes the function of convenient pressing and positioning, and also realizes the function of convenient adjustment of vertical dimensions;

[0016] (1) By providing a vertical positioning plate, a vertical adjustment slot, a horizontal adjustment plate, a threaded fixing rod, a positioning nut, a horizontal adjustment slot, an electrode positioning clamp, an electrode head for connection to the power supply and an electrode connection, when in use, the polymer lithium battery is placed horizontally on the battery support plate and fixed in position, then the position of the electrode head for connection to the power supply is adjusted according to the actual position of the electrode on the battery, the positioning nut is loosened, and the horizontal adjustment plate can adjust the height of the electrode head for connection to the power supply along the vertical adjustment slot on the vertical positioning plate, after adjustment, the positioning nut on the threaded fixing rod is tightened to lock it, then the electrode positioning clamp is adjusted to the left and right along the horizontal adjustment plate so that it corresponds to the position of the battery electrode, during the test, the bottom electric cylinder is opened regularly, and the battery support plate is pushed to the right through the electric cylinder connecting plate, so that the battery electrode and the electrode head for connection to the power supply are in contact, and the DC voltmeter measures the open circuit voltage of the battery, and after the measurement is completed, the bottom electric cylinder retracts, the battery electrode and the electrode head for connection to the power supply are separated, and the next measurement is waited for, thereby realizing the function of automatic power connection detection;

[0017] (2) By providing an internal threaded tube seat, an external threaded adjustment rod, a battery pressing plate and an adjustment hand wheel, when in use, as the polymer lithium battery is placed horizontally on the battery support plate, the adjustment hand wheel is turned, and the adjustment hand wheel drives the external threaded adjustment rod inside the internal threaded tube seat to rotate, and the battery pressing plate is pressed down and pressed against the top of the battery to fix its position, thereby realizing the function of facilitating pressing and positioning;

[0018] (3) By providing a battery support plate, a top cover frame, a side baffle, a positioning screw eye and a hand-tightening bolt, when in use, the height of the top cover frame can be adjusted according to the thickness of the battery. By loosening the hand-tightening bolt to disengage the positioning screw eye, the top cover frame can slide up and down along the outside of the side baffle. The multiple positioning screw eyes provide multiple height options and can be adapted to batteries of different heights, thus realizing the function of facilitating the adjustment of vertical dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the top view of the bottom support bracket of the present invention;

[0021] Figure 3 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 4 This is a side-view enlarged structural diagram of the vertical positioning plate of the present invention;

[0023] Figure 5 It is a side view enlarged structural schematic diagram of the lateral adjustment plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the enlarged side view of the battery support plate of the present invention.

[0025] In the figure: 1. Bottom support bracket; 2. Control box; 3. DC voltmeter; 4. Vertical positioning plate; 5. Vertical adjustment slot; 6. Horizontal adjustment plate; 7. Threaded fixing rod; 8. Positioning nut; 9. Horizontal adjustment slot; 10. Electrode positioning clamp; 11. Electrode head for connection; 12. Electrode connection; 13. Battery support plate; 14. Lower positioning plate; 15. Electric cylinder connection plate; 16. Bottom electric cylinder; 17. Top cover frame; 18. Side baffle; 19. Internally threaded pipe socket; 20. Externally threaded adjustment rod; 21. Battery pressure plate; 22. Adjustment handwheel; 23. Positioning screw eye; 24. Hand-tightening bolt; 25. Sliding slot. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0027] Example: See Figure 1-6 , a polymer lithium battery self-discharge detection device includes a bottom support bracket 1, a control box 2 is fixedly connected to the right side of the top of the bottom support bracket 1, a DC voltmeter 3 is fixedly connected to the left side of the inside of the control box 2, two groups of battery support plates 13 are horizontally placed on the left side of the top of the bottom support bracket 1, the bottom of the battery support plate 13 is fixedly connected to a lower positioning plate 14, and the right side of the lower positioning plate 14 is fixedly connected to an electric cylinder connecting plate 15, two groups of bottom electric cylinders 16 are installed at the bottom end of the bottom support bracket 1, and two groups of sliding grooves 25 are opened at the top of the bottom support bracket 1, and the front and rear ends of the top of the battery support plate 13 are respectively fixedly connected to side baffles 18, and the outer side of the side baffle 18 is sleeved with a top cover frame 17, and the top of the bottom support bracket 1 is provided with a power connection component for facilitating adjustment of the electrode position;

[0028] See also Figure 1-6 The polymer lithium battery self-discharge detection device also includes a power connection component, which includes a vertical positioning plate 4, four groups of vertical adjustment slots 5 are opened at the top of the vertical positioning plate 4, two groups of horizontal adjustment plates 6 are provided on the left side of the vertical positioning plate 4, two groups of threaded fixing rods 7 are fixedly connected to the right side of the horizontal adjustment plate 6, and the outer side of the threaded fixing rod 7 is sleeved with a positioning nut 8, and horizontal adjustment slots 9 are respectively opened at the upper and lower ends of the horizontal adjustment plate 6, and two groups of electrode positioning clips 10 are sleeved on the left side of the horizontal adjustment plate 6, and the left side of the electrode positioning clip 10 is fixedly connected to the power connection electrode head 11, and the top of the power connection electrode head 11 is movably connected to the electrode connection 12;

[0029] The position and size of the vertical adjustment slot 5 and the threaded fixing rod 7 correspond one to one, the left side of the positioning nut 8 fits with the right side of the vertical positioning plate 4, the shape and size of the inside of the electrode positioning clamp 10 match the shape and size of the outside of the transverse adjustment plate 6, and the electrode positioning clamp 10 can slide back and forth along the outside of the transverse adjustment plate 6. The DC voltmeter 3 and the electrode wiring 12 are connected, and the control box 2, the DC voltmeter 3, the power electrode head 11, and the electrode wiring 12 are electrically connected, which can automatically detect the open circuit voltage without the need to manually connect the electrode head;

[0030] Specifically, if Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, loosen the positioning nut 8, and the horizontal adjustment plate 6 can adjust the height of the power electrode head 11 along the vertical adjustment slot 5 on the vertical positioning plate 4. After adjustment, tighten the positioning nut 8 on the threaded fixing rod 7 to lock it, and then adjust the position of the electrode positioning clamp 10 left and right along the horizontal adjustment plate 6 to make it correspond to the position of the battery electrode. During the test, the bottom electric cylinder 16 is opened regularly, and the battery supporting plate 13 is pushed to the right through the electric cylinder connecting plate 15, so that the battery electrode and the power electrode head 11 are in contact, and the DC voltmeter 3 measures the open circuit voltage of the battery. After the measurement, the bottom electric cylinder 16 retracts, and the battery electrode and the power electrode head 11 are separated, waiting for the next measurement. The control box 2, DC voltmeter 3, power electrode head 11, and electrode wiring 12 are electrically connected. This technology is a prior art, so it will not be repeated here.

[0031] An internally threaded tube seat 19 is fixedly connected to the middle position of the top of the top cover frame 17. An externally threaded adjustment rod 20 is vertically inserted into the internal portion of the internally threaded tube seat 19. An adjustment handwheel 22 is fixedly connected to the top of the externally threaded adjustment rod 20. The bottom end of the externally threaded adjustment rod 20 is threadedly connected to a battery pressure plate 21. The internal threads of the internally threaded tube seat 19 match the external threads of the externally threaded adjustment rod 20. The vertical center lines of the top cover frame 17, the internally threaded tube seat 19, and the externally threaded adjustment rod 20 coincide with each other, making it convenient to fix the battery position.

[0032] Specifically, if Figure 1 and Figure 6 As shown, the adjusting hand wheel 22 is rotated, and the adjusting hand wheel 22 drives the external thread adjusting rod 20 inside the internal threaded tube seat 19 to rotate, and the battery pressing plate 21 is pressed down and pressed against the top of the battery to fix its position.

[0033] The side baffle 18 has multiple sets of positioning screw eyes 23 formed inside, and two sets of hand-tightened bolts 24 are respectively inserted into the front and rear ends of the top cover frame 17. The hand-tightened bolts 24 pass through the top cover frame 17 and extend into the interior of the positioning screw eyes 23. The positioning screw eyes 23 are arranged at equal intervals to facilitate vertical height adjustment.

[0034] Specifically, if Figure 1 and Figure 6 As shown, loosen the hand-tightening bolt 24 to disengage it from the positioning screw eye 23, and the top cover frame 17 can slide up and down along the outside of the side baffle 18. Multiple positioning screw eyes 23 allow it to have multiple height options and can adapt to batteries of different heights.

[0035] Working principle: When the present invention is in use, first, the polymer lithium battery is placed horizontally on the battery support plate 13 and fixed in position, and then the position of the power electrode head 11 is adjusted according to the actual position of the electrode on the battery, and the positioning nut 8 is loosened. The horizontal adjustment plate 6 can adjust the height of the power electrode head 11 along the vertical adjustment slot 5 on the vertical positioning plate 4. After adjustment, tighten the positioning nut 8 on the threaded fixing rod 7 to lock it, and then adjust the position of the electrode positioning clamp 10 left and right along the horizontal adjustment plate 6 to make it correspond to the position of the battery electrode. During the test, the bottom electric cylinder 16 is opened regularly, and the battery supporting plate 13 is pushed to the right through the electric cylinder connecting plate 15, so that the battery electrode and the power electrode head 11 are in contact, and the DC voltmeter 3 measures the open circuit voltage of the battery. After the measurement is completed, the bottom electric cylinder 16 retracts, and the battery electrode and the power electrode head 11 are separated, waiting for the next measurement. With the polymer lithium battery placed horizontally on the battery support plate 13, turning the adjustment handwheel 22 rotates the externally threaded adjustment rod 20 inside the internally threaded tube socket 19, pressing the battery pressure plate 21 downward and against the top of the battery, securing it in place. The height of the top cover 17 can be adjusted based on the thickness of the battery. Loosening the thumb screws 24 to disengage the positioning screws 23 allows the top cover 17 to slide up and down along the outside of the side panels 18. The multiple positioning screws 23 allow for a variety of height options to accommodate batteries of varying heights.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A polymer lithium battery self-discharge detection device, comprising a bottom support bracket (1), characterized in that: The right side of the top of the bottom support bracket (1) is fixedly connected to a control box (2), the left side of the inside of the control box (2) is fixedly connected to a DC voltmeter (3), two groups of battery support plates (13) are horizontally placed on the left side of the top of the bottom support bracket (1), the bottom of the battery support plate (13) is fixedly connected to a lower positioning plate (14), the right side of the lower positioning plate (14) is fixedly connected to an electric cylinder connecting plate (15), two groups of bottom electric cylinders (16) are installed at the bottom end of the bottom support bracket (1), two groups of sliding grooves (25) are opened at the top of the bottom support bracket (1), the front and rear ends of the top of the battery support plate (13) are respectively fixedly connected to side baffles (18), the outside of the side baffles (18) is sleeved with a top cover frame (17), and the top of the bottom support bracket (1) is provided with an electrical connection component for facilitating adjustment of the electrode connection position; The power connection assembly includes a vertical positioning plate (4), the top of the vertical positioning plate (4) is provided with four groups of vertical adjustment slots (5), the left side of the vertical positioning plate (4) is provided with two groups of transverse adjustment plates (6), the right side of the transverse adjustment plate (6) is fixedly connected with two groups of threaded fixing rods (7), the outer side of the threaded fixing rod (7) is sleeved with a positioning nut (8), the upper and lower ends of the transverse adjustment plate (6) are respectively provided with transverse adjustment slots (9), the left side of the transverse adjustment plate (6) is sleeved with two groups of electrode positioning clamps (10), the left side of the electrode positioning clamp (10) is fixedly connected with a power connection electrode head (11), and the top of the power connection electrode head (11) is movably connected with an electrode wiring (12).

2. The polymer lithium battery self-discharge detection device according to claim 1, characterized in that: The positions and sizes of the vertical adjustment slot (5) and the threaded fixing rod (7) correspond to each other, and the left side of the positioning nut (8) and the right side of the vertical positioning plate (4) are in close contact with each other.

3. The polymer lithium battery self-discharge detection device according to claim 1, characterized in that: The shape and size of the interior of the electrode positioning clamp (10) are adapted to the shape and size of the exterior of the transverse adjustment plate (6), and the electrode positioning clamp (10) can slide forward and backward along the exterior of the transverse adjustment plate (6).

4. The polymer lithium battery self-discharge detection device according to claim 1, characterized in that: The DC voltmeter (3) and the electrode wiring (12) are connected, and the control box (2), the DC voltmeter (3), the power electrode head (11), and the electrode wiring (12) are electrically connected.

5. The polymer lithium battery self-discharge detection device according to claim 1, characterized in that: An internal threaded tube seat (19) is fixedly connected to the middle position of the top end of the top cover frame (17), an external threaded adjustment rod (20) is vertically inserted into the interior of the internal threaded tube seat (19), an adjustment hand wheel (22) is fixedly connected to the top end of the external threaded adjustment rod (20), and a battery pressure plate (21) is threadedly connected to the bottom end of the external threaded adjustment rod (20).

6. The polymer lithium battery self-discharge detection device according to claim 5, characterized in that: The internal threads of the internal threaded pipe seat (19) and the external threads of the external threaded adjustment rod (20) are adapted to each other, and the vertical center lines of the top cover frame (17), the internal threaded pipe seat (19) and the external threaded adjustment rod (20) coincide with each other.

7. The polymer lithium battery self-discharge detection device according to claim 1, characterized in that: The side baffle (18) is provided with a plurality of positioning screw holes (23) therein, and the front and rear ends of the top cover frame (17) are respectively connected with two groups of hand-tightened bolts (24).

8. The polymer lithium battery self-discharge detection device according to claim 7, characterized in that: The hand-tightening bolts (24) pass through the top cover frame (17) and extend into the interior of the positioning screw eyes (23), and the positioning screw eyes (23) are arranged at equal intervals.

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