CN213843473U

CN213843473U - Lithium battery charging and discharging testing device

Info

Publication number: CN213843473U
Application number: CN202022399886.5U
Authority: CN
Inventors: 陈一淋
Original assignee: Shenyang Sanfeng Electrical Co ltd
Current assignee: Shenyang Sanfeng Electrical Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-30
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a lithium cell measurement testing arrangement relates to battery test technical field, including testboard and monitoring case, the spacing section of thick bamboo of side fixedly connected with of monitoring case, the inside swing joint of a spacing section of thick bamboo has the connection bull stick, the middle part of connecting the bull stick be provided with the elliptical column of rubber strip looks adaptation. The utility model discloses a set up the elliptical column, make the biography power piece of monitoring bottom of the case portion compress tightly the lithium cell, when carrying out charge and discharge test to the lithium cell, can prevent that the lithium cell from taking place to remove, thereby it is stable to guarantee to be connected between metal clip and the lithium cell, reach the purpose that prevents contact failure and lead to test error, through setting up the monitoring case, after compressing tightly the lithium cell, can monitor the temperature and the internal pressure change of lithium cell at charge and discharge, when carrying out charge and discharge test to the lithium cell, can make lithium cell temperature and pressure show on the warm-pressing display screen, reach the purpose that prevents that the lithium cell from leaving the potential safety hazard.

Description

Lithium battery charging and discharging testing device

Technical Field

The utility model relates to a battery test technical field specifically is a lithium cell charge and discharge testing arrangement.

Background

Lithium batteries are batteries in which metallic lithium is used as a negative electrode, and are also called lithium metal batteries. It is noted that lithium batteries are classified into primary batteries and secondary batteries according to the configuration of the batteries. Early lithium batteries were primary batteries, but because of the very active chemical properties of metallic lithium, their processing, storage, use have very high environmental requirements. Therefore, lithium batteries have not been widely used after the invention. With the development of microelectronic technology at the end of the twentieth century, increasingly miniaturized devices are increasing, and higher requirements are made on power supplies. The lithium battery has then entered a large-scale practical stage. Currently, the most common lithium battery structure for consumers uses metal lithium as a negative electrode, manganese dioxide as a positive electrode, and lithium salt dissolved in an organic solvent as an electrolyte. Lithium batteries use a non-aqueous electrolyte solution, and thus such batteries are also called lithium metal batteries. Unlike other batteries, lithium batteries have the characteristics of high charge density, long service life, high unit cost and the like. Lithium batteries can produce voltages of 1.5V (equivalent to zinc-carbon or alkaline batteries) to 3.7V depending on the structural design and the electrode material. The lithium cell is extensive be used for to the cell-phone power supply, in order to guarantee the security that the lithium cell used, need carry out the charge-discharge test to the lithium cell after lithium cell production is accomplished to guarantee the safety in utilization of lithium cell.

At present, current lithium cell charge and discharge testing arrangement is inconvenient when testing the battery fixes the battery, and the battery removes when testing easily, makes contact failure between the electrode to cause the influence to the lithium cell test result, and current lithium cell charge and discharge testing arrangement can not monitor the charge and discharge temperature and the pressure variation of battery, thereby make the lithium cell leave the potential safety hazard when using.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a lithium cell charge and discharge testing arrangement has solved the problem of proposing in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the device comprises a test board and a monitoring box, wherein both sides of the top of the test board are fixedly connected with side frames, the middle parts of the side frames are provided with lifting holes, the middle parts of the inner side walls of the lifting holes are fixedly connected with rubber strips, the side surfaces of the monitoring box are fixedly connected with limiting cylinders, the inner parts of the limiting cylinders are movably connected with connecting rotating rods, the middle parts of the connecting rotating rods are provided with elliptic columns matched with the rubber strips, and one side surfaces of the elliptic columns are fixedly connected with limiting rods matched with the lifting holes; the bottom activity joint of monitoring case has and passes power piece, be provided with the heat conduction copper sheet in the middle of passing the bottom of power piece, the inside of passing power piece is provided with the temperature sensing probe with heat conduction copper sheet looks adaptation, be provided with piezo-resistor between monitoring case and the power piece, the inside wall of monitoring case passes through mounting screw fixedly connected with detector, piezo-resistor passes through the wire and is connected with the detector electricity, be provided with the lithium cell between testboard and the monitoring case.

Optionally, the lateral surface of monitoring case is provided with warm-pressing display screen, warm-pressing switch and the button of zeroing, warm-pressing display screen, warm-pressing switch and the button of zeroing all are connected with the detector electricity through the wire.

Optionally, be provided with the charge-discharge display screen in the middle of the top of testboard, top one side of testboard is provided with current knob, voltage knob and master switch, the top of testboard is through detecting wire fixedly connected with metal clip, the inside of testboard is provided with the tester of being connected with charge-discharge display screen, current knob, voltage knob, master switch, metal clip electricity.

Optionally, the temperature sensing probes are distributed in a rectangular array, and are electrically connected with the detector through signal lines.

Optionally, the bottom of the test board is fixedly connected with four non-slip pads, and the four non-slip pads are distributed in a rectangular array at four corners of the bottom of the test board.

Optionally, one end of the connecting rotating rod is fixedly connected with a crank, and the connecting rotating rod penetrates through the monitoring box and is movably connected with the monitoring box through a bearing.

Three beneficial effects

The utility model provides a lithium cell charge and discharge testing arrangement possesses following beneficial effect:

1. this lithium battery charge and discharge testing arrangement through setting up the elliptical column, can carry on spacingly to the monitoring case, makes the biography power piece of monitoring bottom of the case portion compress tightly the lithium cell, when carrying out the charge and discharge test to the lithium cell, can prevent that the lithium cell from taking place to remove to it is stable to guarantee to be connected between metal clamp and the lithium cell, reaches and prevents contact failure and leads to the purpose of test error.

2. This lithium battery charge and discharge testing arrangement through setting up monitoring box, after compressing tightly the lithium cell, can monitor the lithium cell at the temperature and the internal pressure change of charge and discharge, when carrying out the charge and discharge test to the lithium cell, can make lithium cell temperature and pressure show on the warm-pressing display screen, reach and prevent that the lithium cell from leaving the purpose of potential safety hazard.

Drawings

Fig. 1 is a schematic view of a top-down perspective structure of the present invention;

FIG. 2 is a schematic view of the cross-section of the monitoring box of the present invention;

FIG. 3 is a schematic side view of the connecting rod of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the crank of the present invention.

In the figure: 1. a side frame; 2. a rubber strip; 3. an elliptic cylinder; 4. connecting the rotating rod; 5. a monitoring box; 6. a temperature and pressure display screen; 7. a lithium battery; 8. a test bench; 9. a current knob; 10. a voltage knob; 11. a non-slip mat; 12. a master switch; 13. charging and discharging the display screen; 14. detecting a lead; 15. a metal clip; 16. a temperature and pressure switch; 17. a zero button; 18. a limiting rod; 19. a crank; 20. a limiting cylinder; 21. a lifting hole; 22. a detector; 23. mounting screws; 24. a piezoresistor; 25. a force transfer block; 26. a thermally conductive copper sheet; 27. a signal line; 28. a temperature sensing probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 4, the present invention provides a technical solution: a lithium battery charging and discharging testing device comprises a testing platform 8 and a monitoring box 5, wherein anti-slip pads 11 are fixedly connected to the bottom of the testing platform 8, the number of the anti-slip pads 11 is four, the four anti-slip pads 11 are distributed in a rectangular array at four corners of the bottom of the testing platform 8, side frames 1 are fixedly connected to two sides of the top of the testing platform 8, lifting holes 21 are formed in the middle of the side frames 1, rubber strips 2 are fixedly connected to the middle of the inner side walls of the lifting holes 21, limiting cylinders 20 are fixedly connected to the sides of the monitoring box 5, connecting rotating rods 4 are movably connected to the inside of the limiting cylinders 20, a crank 19 is fixedly connected to one ends of the connecting rotating rods 4, the connecting rotating rods 4 penetrate through the monitoring box 5 and are movably connected with the monitoring box 5 through bearings, elliptical columns 3 matched with the rubber strips 2 are arranged in the middle of the connecting rotating rods 4, and limiting rods 18 matched with the lifting holes 21 are fixedly connected to one sides of the elliptical columns 3; a force transfer block 25 is movably clamped at the bottom of the monitoring box 5, a heat conduction copper sheet 26 is arranged in the middle of the bottom of the force transfer block 25, a plurality of temperature sensing probes 28 matched with the heat conduction copper sheet 26 are arranged inside the force transfer block 25, the temperature sensing probes 28 are distributed in a rectangular array, the temperature sensing probes 28 are electrically connected with a detector 22 through signal lines 27, a pressure resistor 24 is arranged between the monitoring box 5 and the force transfer block 25, the inner side wall of the monitoring box 5 is fixedly connected with the detector 22 through mounting screws 23, the pressure resistor 24 is electrically connected with the detector 22 through lead wires, a temperature and pressure display screen 6, a temperature and pressure switch 16 and a zero return button 17 are arranged on the outer side surface of the monitoring box 5, the temperature and pressure display screen 6, the temperature and pressure switch 16 and the zero return button 17 are electrically connected with the detector 22 through lead wires, a lithium battery 7 is arranged between the testing board 8 and the monitoring box 5, a charging and discharging screen 13 is arranged in the middle of the top of the testing board 8, a current knob 9, a voltage knob 10 and a main switch 12 are arranged on one side of the top of the test platform 8, a metal clamp 15 is fixedly connected to the top of the test platform 8 through a detection wire 14, and a tester electrically connected with a charge-discharge display screen 13, the current knob 9, the voltage knob 10, the main switch 12 and the metal clamp 15 is arranged inside the test platform 8.

When the lithium battery monitoring box is used, the lithium battery 7 is firstly placed at the top of the test board 8, then the crank handle 19 is rotated by ninety degrees, so that the long shaft of the elliptic cylinder 3 is in a vertical state, the elliptic cylinder 3 is not tightly propped against the rubber strip 2, the monitoring box 5 can be in a vertical free state, the limiting cylinder 20 can limit two sides of the monitoring box 5, so that the monitoring box 5 cannot move in the horizontal direction, after the monitoring box 5 is pressed at the top of the lithium battery 7, the connecting rotating rod 4 can only be rotated by ninety degrees back and forth due to the limiting relation between the limiting rod 18 and the lifting hole 21, the long shaft of the elliptic cylinder 3 is rotated by ninety degrees by the crank handle 19 to be in a horizontal state, so that the side surface of the elliptic cylinder 3 is clamped with the rubber strip 2, so that the monitoring box 5 is limited in the vertical direction, the monitoring box 5 compresses the lithium battery 7, and then the two metal clamps 15 are respectively clamped with two electrodes of the lithium battery 7, since the air pressure inside the lithium battery 7 changes during the charging and discharging processes, the temperature and pressure of the lithium battery 7 can be measured by opening the temperature and pressure switch 16, before measurement, the zero button 17 is pressed to zero the pressure between the lithium battery 7 and the detector 22, and the lithium battery 7 is tested for charging and discharging by opening the main switch 12, the charging current and voltage can be adjusted by the current knob 9 and the voltage knob 10 during the test, when the temperature of the lithium battery 7 changes, the temperature sensing probe 28 can transmit the temperature change to the detector 22, when the pressure intensity of gas generated in the lithium battery 7 changes, the pressure of the force transmission block 25 on the pressure resistor 24 changes, and the temperature and pressure values are displayed on the temperature and pressure display screen 6 after being processed by the detector 22, so that the purpose of testing the temperature and the pressure intensity of the lithium battery 7 is achieved.

To sum up, this device is through setting up the elliptical column 3, can be spacing to monitoring case 5, make the biography power piece 25 of monitoring case 5 bottom compress tightly lithium cell 7, when carrying out the charge-discharge test to lithium cell 7, can prevent that lithium cell 7 from taking place to remove, thereby it is stable to guarantee to be connected between metal clip 15 and the lithium cell 7, reach and prevent contact failure and lead to test error's purpose, through setting up monitoring case 5, after compressing tightly lithium cell 7, can monitor lithium cell 7 at the temperature and the internal pressure change of charge-discharge, when carrying out the charge-discharge test to lithium cell 7, can make lithium cell 7 temperature and pressure show on warm-pressing display screen 6, reach and prevent that lithium cell 7 from leaving the purpose of potential safety hazard.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a lithium cell measurement testing arrangement, includes testboard (8) and monitoring box (5), its characterized in that: both sides of the top of the test board (8) are fixedly connected with side frames (1), the middle of each side frame (1) is provided with a lifting hole (21), the middle of the inner side wall of each lifting hole (21) is fixedly connected with a rubber strip (2), the side surface of the monitoring box (5) is fixedly connected with a limiting cylinder (20), the inside of each limiting cylinder (20) is movably connected with a connecting rotating rod (4), the middle of each connecting rotating rod (4) is provided with an elliptic column (3) matched with the rubber strip (2), and one side surface of each elliptic column (3) is fixedly connected with a limiting rod (18) matched with the lifting hole (21); the utility model discloses a monitoring device, including monitoring case (5), power transmission block (25) is connected to the bottom activity joint of monitoring case (5), be provided with heat conduction copper sheet (26) in the middle of the bottom of power transmission block (25), the inside of power transmission block (25) is provided with temperature sensing probe (28) with heat conduction copper sheet (26) looks adaptation, be provided with between monitoring case (5) and power transmission block (25) piezo-resistor (24), the inside wall of monitoring case (5) passes through mounting screw (23) fixedly connected with detector (22), piezo-resistor (24) are connected with detector (22) electricity through the wire, be provided with lithium cell (7) between testboard (8) and monitoring case (5).

2. The lithium battery charging and discharging test device according to claim 1, wherein: the outer side face of the monitoring box (5) is provided with a warm-pressing display screen (6), a warm-pressing switch (16) and a zero returning button (17), and the warm-pressing display screen (6), the warm-pressing switch (16) and the zero returning button (17) are electrically connected with the detector (22) through leads.

3. The lithium battery charging and discharging test device according to claim 1, wherein: be provided with charge-discharge display screen (13) in the middle of the top of testboard (8), top one side of testboard (8) is provided with current knob (9), voltage knob (10) and master switch (12), the top of testboard (8) is through detecting wire (14) fixedly connected with metal clip (15), the inside of testboard (8) is provided with the tester of being connected with charge-discharge display screen (13), current knob (9), voltage knob (10), master switch (12), metal clip (15) electricity.

4. The lithium battery charging and discharging test device according to claim 1, wherein: the temperature sensing probes (28) are distributed in a rectangular array, and the temperature sensing probes (28) are electrically connected with the detector (22) through signal lines (27).

5. The lithium battery charging and discharging test device according to claim 1, wherein: the anti-skid device is characterized in that anti-skid pads (11) are fixedly connected to the bottom of the test board (8), the number of the anti-skid pads (11) is four, and the four anti-skid pads (11) are distributed in a rectangular array at four corners of the bottom of the test board (8).

6. The lithium battery charging and discharging test device according to claim 1, wherein: one end of the connecting rotating rod (4) is fixedly connected with a crank (19), and the connecting rotating rod (4) penetrates through the monitoring box (5) and is movably connected with the monitoring box (5) through a bearing.