Lithium battery charging and discharging test device for communication base station

Abstract

The invention relates to the technical field of lithium battery testing, and discloses a lithium battery charging and discharging testing device for a communication base station, which comprises a base, a bearing plate arranged above the base and a first support frame used for supporting the bearing plate, the bearing plate is used for placing a lithium battery to be tested, and the first support frame is used for supporting the bearing plate. The first supporting frame is fixedly installed on the base and is in sliding fit with the bearing plate. The technical means that the bearing plate and the stress rod are matched is adopted, when a to-be-detected battery is placed, the bearing plate is driven to move downwards through the gravity of the battery, the stress rod is extruded in the downward moving process of the bearing plate to rotate, a connector of an electrified wire hung at the other end of the stress rod is conveyed to the position close to the positive electrode and the negative electrode of the battery, connection with the battery is facilitated, and the detection efficiency is improved. And the two electrified wires are separated by the convex part on the hook-shaped block, so that the distinguishing is convenient, the defects in the prior art are overcome, and the practicability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery testing technology, and more specifically, to a lithium battery charge and discharge testing device for communication base stations. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental conditions. Among them, lithium iron phosphate batteries have the advantages of high safety and strong stability compared to other lithium batteries, and are often used as backup power for communication base stations. Before lithium iron phosphate batteries leave the factory, they often need to undergo charge and discharge tests. The specific operation involves connecting the connectors of the two power-carrying wires of the test device to the positive and negative terminals of the lithium iron phosphate battery, and then performing charge and discharge tests.

[0003] While existing testing equipment can perform charge and discharge tests on lithium iron phosphate batteries relatively well, in actual operation, since factory testing is mostly batch testing, and many small and medium-sized manufacturers still use manual battery replacement for testing due to cost considerations, each time the battery to be tested is replaced, the two conductive wires used to connect the positive and negative terminals of the battery must be removed from the tested battery, the new battery is replaced, and then the wires are connected to the new battery to be tested. During this process, the two wires of the testing equipment are prone to getting tangled together, and the wires connecting the positive and negative terminals are easily confused, resulting in reduced work efficiency. At the same time, the functions of existing testing equipment are often relatively simple, and it is impossible to perform the test of the deformation of lithium batteries under overcharge while conducting electrical testing. Summary of the Invention

[0004] This invention discloses a lithium battery charging and discharging test device for communication base stations, which solves the technical problem of low efficiency in removing and connecting wires in existing test devices.

[0005] This invention discloses a lithium battery charging and discharging test device for communication base stations, comprising: a base, a support plate disposed above the base, and a first support frame for supporting the support plate. The support plate is used to place the lithium battery to be tested, and the first support frame is fixedly installed on the base and slides with the support plate.

[0006] At least one of the two sides of the base in the width direction is rotatably connected to a force-bearing rod. One end of the force-bearing rod abuts against the lower surface of the base, and the other end of the force-bearing rod is fixedly installed with a hook-shaped block. The hook-shaped block is used to hook the wire part of the wire connector of the lithium battery. The inner side of the hook-shaped block has a protrusion for separating the wire parts of the two wire connectors.

[0007] Preferably, the number of force-bearing rods is set to two, and they are symmetrically arranged on both sides of the base.

[0008] Preferably, a measuring unit is provided on at least one of the two sides in the width direction of the bearing plate. The measuring unit includes a second support frame fixedly installed on the base. A mounting plate is rotatably connected to the second support frame. A plurality of equidistant outer tubes are fixedly connected to the mounting plate. An inner rod is inserted into the outer tube. Each inner rod is provided with a scale mark. At least one pull rod is hinged to the side of the mounting plate near the bearing plate, and the pull rod is hinged to the bearing plate.

[0009] Preferably, the number of outer tubes is set to an odd number, and the median number of outer tubes is fixedly installed in the middle of the mounting plate.

[0010] Preferably, the number of the measuring units is set to two, and the two measuring units are arranged symmetrically.

[0011] Preferably, a rubber ball is fixedly connected to the end of each inner rod away from the outer tube.

[0012] Preferably, the base is provided with an adjustment unit, the adjustment unit includes an electric telescopic rod fixedly connected to the middle of the upper surface of the base, the moving end of the electric telescopic rod is fixedly connected to a third support frame, and the contact part of the third support frame with the bearing plate is made of rubber.

[0013] Preferably, the first support frame is configured with multiple vertical rods, and the multiple vertical rods are symmetrically arranged, with each vertical rod being slidably connected to the bearing plate.

[0014] Preferably, the number of vertical rods is set to four, and the four vertical rods are arranged in pairs, with a first baffle fixedly connected between the two vertical rods in each pair.

[0015] Preferably, the support plate is provided with a clamping unit, the clamping unit includes a bidirectional lead screw rotatably connected to the lower side of the support plate, two sliders are threadedly connected to the bidirectional lead screw, and a second baffle is fixedly connected to the portion of each slider extending to the upper side of the support plate, and a limiting groove for the slider to move is provided through the corresponding position on the support plate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention employs a combination of a support plate and a force-bearing rod. When the battery to be tested is placed, the weight of the battery causes the support plate to move downwards. During the downward movement of the support plate, the force-bearing rod is squeezed, causing it to rotate. This brings the connector of the energized wire hanging at the other end of the support plate to the vicinity of the positive and negative terminals of the battery, facilitating connection with the battery. Furthermore, the two energized wires are separated by the protrusion on the hook-shaped block, making them easy to distinguish. This overcomes the shortcomings of the prior art and improves the practicality of the device.

[0018] 2. This invention employs a combination of a support plate and a mounting plate. When the support plate moves downward, the mounting plate is rotated by a pull rod. Multiple inner rods on the mounting plate slide under gravity and press against the battery. The change in the length of the inner rods exposed outside the outer tube is used to calculate the deformation data of the lithium iron phosphate battery after overcharging, making the device more functional and easier to operate.

[0019] 3. This invention employs a combination of an adjustment unit and a support plate. The electric telescopic rod drives the support plate upward, and the mounting plate flips to a horizontal position under its own weight. This significantly reduces the squeezing force of the inner rod on the battery, preventing excessive squeezing of the inner rod from interfering with the battery's deformation, thereby improving the accuracy of the test deformation data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure in another embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram illustrating the overall structure of the measurement unit according to the present invention;

[0023] Figure 4 This is an exploded view of the architecture of the measurement unit section of the present invention;

[0024] Figure 5 This is a schematic diagram of the overall structure of the mounting plate and inner rod used to demonstrate the present invention;

[0025] Figure 6 This is a schematic diagram illustrating the overall structure of the adjustment unit according to the present invention;

[0026] Figure 7 This is a schematic diagram illustrating the overall structure of the clamping unit of the present invention.

[0027] In the diagram: 100, base; 200, support plate; 300, measuring unit; 400, adjustment unit; 500, clamping unit;

[0028] 201. Vertical rod; 202. Force-bearing rod; 203. Hook-shaped block; 204. First baffle;

[0029] 301. Second support frame; 302. Mounting plate; 303. Outer tube; 304. Inner rod; 305. Tie rod; 306. Rubber ball;

[0030] 401. Electric telescopic pole; 402. Third support frame;

[0031] 501, double-acting lead screw; 502, slider; 503, second baffle. Detailed Implementation

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0033] like Figure 1 , Figure 2 As shown, this embodiment discloses a lithium battery charging and discharging test device for a communication base station, including: a base 100, a support plate 200 disposed above the base 100, and a first support frame for supporting the support plate 200. The support plate 200 is used to place the lithium battery to be tested, and the first support frame is fixedly installed on the base 100 and slides with the support plate 200.

[0034] At least one of the two sides of the base 100 in the width direction is rotatably connected to a force-bearing rod 202. One end of the force-bearing rod 202 abuts against the lower surface of the base 100, and the other end of the force-bearing rod 202 is fixedly installed with a hook block 203. The hook block 203 is used to hook the wire part of the wire connector of the lithium battery. The inner side of the hook block 203 has a protrusion for separating the wires of the two wire connectors.

[0035] The working principle and beneficial effects of the above technical solution are as follows: First, the two energized wires on the test device are hung on the inside of the hook block 203, and the position of the wires is adjusted so that the wires of the two wires are respectively embedded on both sides of the protrusion on the hook block 203, and the protrusion is used to separate them.

[0036] Subsequently, the lithium iron phosphate battery to be tested is placed on the support plate 200. Under the gravity of the battery and with the cooperation of the first support frame, the support plate 200 moves vertically downward. During the downward movement of the support plate 200, it squeezes the force rod 202, causing it to rotate. This sends the connector of the power-carrying wire on the hook block 203 hanging on it to the vicinity of the positive and negative terminals of the battery, making it easy to connect to the battery. The two power-carrying wires are separated by the protrusion on the hook block 203, making them easy to distinguish and preventing them from getting tangled together.

[0037] This embodiment employs a combination of a support plate 200 and a force-bearing rod 202. When the battery to be tested is placed, the weight of the battery causes the support plate 200 to move downwards. During the downward movement of the support plate 200, it presses against the force-bearing rod 202, causing it to rotate. This brings the connector of the energized wire hanging at the other end of the rod to the vicinity of the positive and negative terminals of the battery, facilitating connection with the battery. Furthermore, the two energized wires are separated by the protrusion on the hook block 203. The length between the wire connector and the hook block 203 is shorter than the overall length of the wires, making it insufficient to entangle them together. Even if the wires between the testing equipment and the hook block 203 become entangled, it will not affect the testing process.

[0038] like Figure 2 As shown, in a specific embodiment, the number of force-bearing rods 202 is set to two, and they are symmetrically arranged on both sides of the base 100.

[0039] The working principle and beneficial effects of the above technical solution are as follows: By setting two force rods 202, the two energized wires of the test device can be hung on the corresponding hook blocks 203 respectively, and the placement direction of the battery can be standardized so that the energized wire connected to the positive terminal of the battery is hung on the hook block 203 closer to the positive terminal of the battery, and the energized wire connected to the negative terminal of the battery is hung on the hook block 203 closer to the negative terminal of the battery. This makes the connection more convenient and can further reduce the probability of connecting the positive and negative terminals of the battery incorrectly.

[0040] like Figure 1 , Figure 3 , Figure 4 As shown, in a specific embodiment: a measuring unit 300 is provided on at least one of the two sides of the bearing plate 200 in the width direction. The measuring unit 300 includes a second support frame 301 fixedly installed on the base 100. A mounting plate 302 is rotatably connected to the second support frame 301. A plurality of equidistant outer tubes 303 are fixedly connected to the mounting plate 302. An inner rod 304 is inserted into the outer tube 303. Each inner rod 304 is provided with a scale mark. At least one pull rod 305 is hinged to the side of the mounting plate 302 near the bearing plate 200, and the pull rod 305 is hinged to the bearing plate 200.

[0041] The working principle and beneficial effects of the above technical solution are as follows: After the battery to be tested is placed on the support plate 200, the support plate 200 moves downward under the action of the battery's gravity, pulling the corresponding pull rod 305, which in turn drives the mounting plate 302 to move, causing the mounting plate 302 and the second support frame 301 to rotate relative to each other. After the mounting plate 302 has rotated past the horizontal position, the inner rod 304 slides relative to the corresponding outer tube 303 under the action of gravity, so that the end of the inner rod 304 away from the mounting plate 302 abuts against the surface of the corresponding side of the battery. After the support plate 200 stops moving downward, the corresponding scale on the inner rod 304 is recorded at this time. At the same time, if the battery deforms during the charging process, it will push the inner rod 304 at the corresponding position, causing the length of the inner rod 304 exposed outside the corresponding outer tube 303 to change, and the corresponding scale will also change. Every certain period of time... The time is recorded by the scale change on the inner rod 304 until the end of the charge and discharge test. Then, by converting the data with the tilt angle of the mounting plate 302, the accurate data of the deformation at the corresponding position can be obtained. At the same time, multiple inner rods 304 can measure the data at multiple positions at the same time, providing more references. After the test, the tested lithium iron phosphate battery is removed, and the support plate 200 is no longer pressed by the battery. Under the push of the pull rod 305 and the force rod 202, the support plate 200 moves vertically upward, and the mounting plate 302 rotates in the opposite direction. After passing the horizontal position, the multiple inner rods 304 slide towards the outer tube 303 under the action of gravity until they abut against the inner wall of the mounting plate 302. The inner rods 304 are automatically reset without manual reset, so that the device can be reused and further improve the practicality of the device.

[0042] like Figure 5 As shown, in a specific embodiment, the number of outer tubes 303 is set to an odd number, and the median outer tube 303 is fixedly installed in the middle of the mounting plate 302.

[0043] The working principle and beneficial effects of the above technical solution are as follows: the median outer tube 303 is set in the middle of the mounting plate 302 so that it can be placed exactly against the middle position of the battery to be tested, so as to ensure the accuracy of the acquired data.

[0044] In one specific embodiment: the number of measurement units 300 is set to two, and the two measurement units 300 are arranged symmetrically.

[0045] The working principle and beneficial effects of the above technical solution are as follows: by setting two measuring units 300, data on both sides of the tested lithium iron phosphate battery can be obtained simultaneously, further improving the practicality of the device.

[0046] like Figure 5 As shown, in a specific embodiment, a rubber ball 306 is fixedly connected to the end of each inner rod 304 away from the outer tube 303.

[0047] The working principle and beneficial effects of the above technical solution are as follows: the setting of the rubber ball 306 can play a certain buffering role, preventing the inner rod 304 from leaving scratches on the battery after contacting it.

[0048] like Figure 6 As shown, in a specific embodiment: an adjustment unit 400 is provided on the base 100. The adjustment unit 400 includes an electric telescopic rod 401 fixedly connected to the middle of the upper surface of the base 100. The moving end of the electric telescopic rod 401 is fixedly connected to a third support frame 402. The contact part between the third support frame 402 and the bearing plate 200 is made of rubber.

[0049] The working principle and beneficial effects of the above technical solution are as follows: The setting of the third support frame 402 can hold the downward-moving bearing plate 200 in place, preventing it from moving too far downward, which would cause the mounting plate 302 to flip at too large an angle, making it difficult for the inner rod 304 to retract. It can also activate the electric telescopic rod 401. The movement of the moving end of the electric telescopic rod 401 drives the third support frame 402 to move upward, which in turn drives the bearing plate 200 to move upward synchronously, causing the mounting plate 302 to rotate in the opposite direction until the mounting plate 302 rotates to a horizontal state. The third support frame 402 stops moving and remains at this height. At this time, although the multiple inner rods 304 are pressed against the surface of the battery, the squeezing force on the battery is small and will not interfere with the deformation of the battery after overcharging, thereby improving the accuracy of the obtained battery deformation data.

[0050] like Figure 2 As shown, in a specific embodiment: the first support frame is configured with multiple vertical rods 201, and the multiple vertical rods 201 are symmetrically arranged, and each vertical rod 201 is slidably connected to the bearing plate 200.

[0051] The working principle and beneficial effects of the above technical solution are as follows: the setting of the vertical rod 201 restricts the movement trajectory of the bearing plate 200, so that the bearing plate 200 can only move stably up and down in the vertical direction.

[0052] like Figure 2 As shown, in a specific embodiment, the number of vertical rods 201 is set to four, and the four vertical rods 201 are arranged in pairs, with a first baffle 204 fixedly connected between the two vertical rods 201 in each pair.

[0053] The working principle and beneficial effects of the above technical solution are as follows: the four vertical rods 201 form a group, which, together with the corresponding first baffle 204, can play a certain role in protecting the battery, preventing the battery from shaking or even falling off during the up-and-down movement of the support plate 200, thereby improving the stability of the device.

[0054] like Figure 7As shown, in a specific embodiment: a clamping unit 500 is provided on the support plate 200. The clamping unit 500 includes a bidirectional lead screw 501 rotatably connected to the lower side of the support plate 200. Two sliders 502 are threadedly connected to the bidirectional lead screw 501. A second baffle 503 is fixedly connected to the portion of each slider 502 extending to the upper side of the support plate 200. A limiting groove for the slider 502 to move is provided through the corresponding position on the support plate 200.

[0055] The working principle and beneficial effects of the above technical solution are as follows: The lithium iron phosphate battery to be tested is placed on the support plate 200. The bidirectional lead screw 501 is rotated to drive the two sliders 502 to move, so that the sliders 502 and the corresponding limiting grooves slide relative to each other. At the same time, the limiting grooves restrict the movement trajectory of the sliders 502, so that the two sliders 502 move closer to each other along the direction of the limiting grooves, thereby actuating the two second baffles 503 to move closer to each other. The opposing surfaces of the two second baffles 503 contact and push the battery, making a fine adjustment to the position of the battery and moving it to the middle position of the support plate 200, so that the inner rod 304 used for testing can abut against the corresponding position, so as to ensure the accuracy of the deformation data obtained. At the same time, this device can clamp and test lithium iron phosphate batteries of different sizes, improving the adaptability of this device.

[0056] Working principle: First, when the base 100 has a force rod 202 on only one side, hang the two power-carrying wires on the test device on the inside of the hook block 203, adjust the position of the wires, and leave a certain length between the hook block 202 and the wire joint, so that the wires are respectively embedded on both sides of the protrusion on the hook block 203, and the protrusion separates them.

[0057] The lithium iron phosphate battery to be tested is placed on the support plate 200. Under the weight of the battery and with the cooperation of the first support frame, the support plate 200 moves vertically downward. During the downward movement of the support plate 200, it squeezes the force rod 202, causing it to rotate. This brings the connector of the energized wire on the hook block 203 hanging on it to the vicinity of the positive and negative terminals of the battery, facilitating its connection with the battery. The two energized wires are separated by the protrusion on the hook block 203 for easy identification. The length between the wire connector and the hook block 203 is shorter than the overall wire length, making it insufficient to entangle together. Even if the wires between the testing equipment and the hook block 203 entangle together, it will not affect the testing process.

[0058] Secondly, with force-bearing rods 202 on both sides of the base 100, the two wires are respectively hung on the inside of the hook-shaped blocks 203 on the two force-bearing rods 202, and a certain length is reserved between the hook-shaped blocks 202 and the wire joints. Similarly, when the support plate 200 moves down, it drives the two force-bearing rods 202 to rotate at the same time, sending the wire used to connect to the positive terminal of the battery to the vicinity of the positive terminal of the battery, and the wire used to connect to the negative terminal of the battery to the negative terminal of the battery. This effectively avoids the two energized wires from getting tangled, and also separates the wires connecting the positive and negative terminals to avoid confusion, further improving the practicality of this device.

[0059] Meanwhile, as the support plate 200 moves downward, the corresponding pull rod 305 is pulled, which in turn drives the mounting plate 302 to move, causing the mounting plate 302 and the second support frame 301 to rotate relative to each other. After the mounting plate 302 has rotated past the horizontal position, the inner rod 304 slides relative to the corresponding outer tube 303 under the action of gravity, so that the end of the inner rod 304 away from the mounting plate 302 abuts against the surface of the battery on the corresponding side. After the support plate 200 stops moving downward, the corresponding scale on the inner rod 304 is recorded at this time. At the same time, if the battery deforms during the charging process, it will push the inner rod 304 at the corresponding position, causing its length exposed outside the corresponding outer tube 303 to change, and the corresponding scale will also change. The scale change on the inner rod 304 is recorded every once in a while until the charge and discharge test is completed. Then, by converting the data with the tilt angle of the mounting plate 302, the accurate data of the deformation at the corresponding position can be obtained. At the same time, multiple inner rods 304 can measure the data at multiple positions at the same time, providing more references.

[0060] The third support frame 402 can hold the downward-moving support plate 200 in place, preventing it from moving too far downward and causing the mounting plate 302 to flip at an excessive angle, making it difficult for the inner rods 304 to retract. It can also activate the electric telescopic rod 401. The movement of the moving end of the electric telescopic rod 401 drives the third support frame 402 to move upward, causing the support plate 200 to move upward synchronously, making the mounting plate 302 rotate in the opposite direction until the mounting plate 302 rotates to a horizontal state. The third support frame 402 stops moving and remains at this height. At this time, although the multiple inner rods 304 are pressed against the surface of the battery, the squeezing force on the battery is small and will not interfere with the deformation of the battery after overcharging, thereby improving the accuracy of the obtained battery deformation data.

[0061] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A lithium battery charge / discharge testing device, characterized in that, include: The base (100), the support plate (200) disposed above the base (100), and the first support frame for supporting the support plate (200), the support plate (200) is used to place the lithium battery to be tested, and the first support frame is fixedly installed on the base (100) and slides with the support plate (200). At least one of the two sides of the base (100) in the width direction is rotatably connected to a force-bearing rod (202). One end of the force-bearing rod (202) abuts against the lower surface of the base (100), and the other end of the force-bearing rod (202) is fixedly installed with a hook-shaped block (203). The hook-shaped block (203) is used to hook the wire part of the wire connector of the lithium battery. The inner side of the hook-shaped block (203) has a protrusion for separating the wires of the two wire connectors.

2. The lithium battery charge / discharge testing device according to claim 1, characterized in that, The number of force-bearing rods (202) is set to two, and they are symmetrically arranged on both sides of the base (100).

3. The lithium battery charge / discharge testing device according to claim 2, characterized in that, A measuring unit (300) is provided on at least one side of the bearing plate (200) in the width direction. The measuring unit (300) includes a second support frame (301) fixedly installed on the base (100). A mounting plate (302) is rotatably connected to the second support frame (301). A plurality of equidistant outer tubes (303) are fixedly connected to the mounting plate (302). An inner rod (304) is inserted into the outer tube (303). Each inner rod (304) is provided with a scale mark. At least one pull rod (305) is hinged to the side of the mounting plate (302) near the bearing plate (200). The pull rod (305) is hinged to the bearing plate (200).

4. The lithium battery charge / discharge testing device according to claim 3, characterized in that, The number of the outer tubes (303) is set to an odd number, and the median number of the outer tubes (303) is fixedly installed in the middle of the mounting plate (302).

5. A lithium battery charge / discharge testing device according to claim 4, characterized in that, The number of the measuring units (300) is set to two, and the two measuring units (300) are arranged symmetrically.

6. The lithium battery charge / discharge testing device according to claim 5, characterized in that, Each inner rod (304) has a rubber ball (306) fixedly connected to one end away from the outer tube (303).

7. The lithium battery charging and discharging test device for a communication base station according to claim 6, characterized in that, An adjustment unit (400) is provided on the base (100). The adjustment unit (400) includes an electric telescopic rod (401) fixedly connected to the middle of the upper surface of the base (100). The moving end of the electric telescopic rod (401) is fixedly connected to a third support frame (402). The contact part between the third support frame (402) and the bearing plate (200) is made of rubber.

8. A lithium battery charge / discharge testing device according to claim 7, characterized in that, The first support frame is configured with multiple vertical rods (201), and the multiple vertical rods (201) are symmetrically arranged, and each vertical rod (201) is slidably connected to the bearing plate (200).

9. A lithium battery charge / discharge testing device according to claim 8, characterized in that, The number of vertical rods (201) is set to four, and the four vertical rods (201) are grouped in pairs, with a first baffle (204) fixedly connected between the two vertical rods (201) in each group.

10. A lithium battery charge / discharge testing device according to claim 9, characterized in that, The support plate (200) is provided with a clamping unit (500). The clamping unit (500) includes a bidirectional lead screw (501) rotatably connected to the lower side of the support plate (200). Two sliders (502) are threadedly connected to the bidirectional lead screw (501). Each slider (502) is fixedly connected to a second baffle (503) at the part extending to the upper side of the support plate (200). A limiting groove for the slider (502) to move is provided through the corresponding position on the support plate (200).

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