Electronic load equipment for testing capacity of small lithium battery
By setting up a circuit protection mechanism in the lithium battery test equipment and using the timer and controller to control the circuit power-on time, the safety problem caused by the inability to be powered off in time in existing equipment is solved, and lithium batteries of different sizes are realized through structures such as clamps. The test improves the safety and scope of use of the equipment.
Patent Information
- Application Number
- CN202420776307.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing lithium battery testing equipment lacks circuit protection mechanism, which leads to failure to cut off power in time during the test, which is prone to overdischarge of power supply and overlimiting of lithium batteries, reducing the safety of the test.
A small-scale electronic load device for testing capacity of lithium batteries was designed. By setting the main body, discharge power supply, NTC sensor, wiring tube, transformer, timer, control panel and rheostat in the equipment, the timer and controller are used to cooperate with the transformer and rheostat. To control the circuit power-on time to avoid overloading and overdischarge.
Effectively avoid over-limit and over-discharge of the equipment during the test, improve the safety and reliability of the test. At the same time, through clamps, slide chutes, strong springs, limit rods, limit blocks and cam structures, the correct The testing of lithium batteries of different sizes has expanded the scope of use of the equipment.
Smart Images
Figure CN222439640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery testing equipment, in particular to an electronic load device for testing the capacity of a small lithium battery. Background Art
[0002] Lithium batteries are a power source used in transportation vehicles. During the production process, in order to ensure the stability of lithium batteries during operation, lithium batteries need to be tested, so a load device is used.
[0003] Although the existing load equipment can achieve the testing effect during use, the existing test equipment is not equipped with a circuit protection mechanism. Therefore, during the test process, the circuit cannot be powered off in time, resulting in over-discharge of the equipment power supply and over-limit of the lithium battery, thereby reducing the safety of the existing load equipment during the test. For this reason, we propose an electronic load device for small lithium battery capacity testing. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a small electronic load device for lithium battery capacity testing, which has the advantages of high safety and wide application range, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical scheme: an electronic load device for testing the capacity of a small lithium battery, comprising a main body, wherein a discharge power supply, an NTC sensor, and a heat dissipator are fixedly mounted on the right side of the main body, and a wiring tube, a transformer, a rheostat, a control panel, and a TFT color screen are fixedly mounted on the left side of the main body, a main body is placed on the inner wall of the main body, a slide groove is provided at the bottom of the inner wall of the main body, a limit block is slidably connected to the inner wall of the slide groove, a clamp is slidably connected to the inner wall of the main body, a limit rod is fixedly mounted on the outer wall of the clamp, a strong spring is sleeved on the outer wall of the limit rod, a cam is tightly fitted on the outer wall of the strong spring, and a handle is fixedly mounted on the bottom of the cam.
[0006] As a preferred technical solution of the utility model: the number of the wiring tubes is four, and the four wiring tubes are evenly distributed along the outer wall of the main body, a positioning plate is fixedly installed on the left side of the main body, and a timer and a controller are fixedly installed on the bottom of the positioning plate, and the controller is electrically connected to the timer, wiring tube, transformer, TFT color screen and control panel respectively.
[0007] As a preferred technical solution of the utility model: the top of the cam is rotatably connected to the bottom of the main body, the top of the limit block is fixedly assembled with the bottom of the clamping plate, the number of the clamping plates is two, and the two clamping plates are symmetrically distributed along the inner wall of the main body.
[0008] As a preferred technical solution of the utility model: a through hole is opened on the inner wall of the main body, and the inner wall of the through hole is slidably connected to the outer wall of the clamping plate.
[0009] As a preferred technical solution of the utility model: one end of the strong spring is in contact with the inner wall of the main body, and the other end of the strong spring is in contact with the outer wall of the clamping plate.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] 1. The electronic load device for testing the capacity of a small lithium battery is equipped with a main body, a discharge power supply, an NTC sensor, a wiring tube, a transformer, a timer, a control panel, and a rheostat. During operation, the device uses a timer and a controller as well as a transformer and a rheostat to control the circuit power-on time within the time range set by the user, thereby avoiding the main body from exceeding the limit or the discharge power supply from over-discharging, thereby improving the safety and reliability of the device during the test process.
[0012] 2. The electronic load device for testing the capacity of a small lithium battery has a clamping plate, a slide groove, a strong spring, a limit rod, a limit block, and a cam structure. When the user installs the body, the two clamping plates can be moved in opposite directions by turning the handle, so that there is enough space between the two clamping plates for the user to place the body, ensuring that the device can perform testing operations on bodies of different sizes, thereby increasing the scope of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0014] Figure 2 This is a side view of the structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the main structure of the utility model;
[0016] Figure 4 This is a schematic diagram of the handle structure of the utility model.
[0017] In the figure: 1. Main body; 2. Discharge power supply; 3. NTC sensor; 4. Heat dissipator; 5. Main body; 6. Clamp; 7. Slide; 8. Limit block; 9. Cam; 10. Handle; 11. Wiring tube; 12. Transformer; 13. Variable resistor; 14. Control panel; 15. TFT color screen; 16. Limit rod; 17. Strong spring. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-4 A small-sized electronic load device for lithium battery capacity test comprises a main body 1, a discharge power source 2, an NTC sensor 3 and a heat dissipator 4 are fixedly mounted on the right side of the main body 1, a wiring tube 11, a transformer 12, a rheostat 13, a control panel 14 and a TFT color screen 15 are fixedly mounted on the left side of the main body 1, a main body 5 is placed on the inner wall of the main body 1, a slide groove 7 is provided at the bottom of the inner wall of the main body 1, a limit block 8 is slidably connected to the inner wall of the slide groove 7, a clamping plate 6 is slidably connected to the inner wall of the main body 1, a limit rod 16 is fixedly mounted on the outer wall of the limit rod 16, a strong spring 17 is sleeved on the outer wall of the limit rod 16, a cam 9 is tightly fitted on the outer wall of the strong spring 17, and a handle 10 is fixedly mounted on the bottom of the cam 9.
[0020] In the above structure, by setting the main body 1, discharge power supply 2, NTC sensor 3, heat rejector 4, wiring tube 11, transformer 12, rheostat 13, control panel 14, and TFT color screen 15 structure, during the use of the device, the user can set the voltage, current, and power over-limit protection range of the device through the control panel 14, and can also control the discharge power supply 2 to stop the discharge voltage and discharge time through the timer, and then use the NTC sensor 3 to monitor the temperature of the discharge power supply 2 in real time, and cooperate with the heat rejector 4 to achieve an intelligent temperature control effect.
[0021] In a preferred embodiment: the number of the wiring tubes 11 is four, and the four wiring tubes 11 are evenly distributed along the outer wall of the main body 1, a positioning plate is fixedly installed on the left side of the main body 1, and a timer and a controller are fixedly installed on the bottom of the positioning plate, and the controller is electrically connected to the timer, the wiring tube 11, the transformer 12, the TFT color screen 15 and the control panel 14 respectively.
[0022] In the above structure, the timer and controller set can cooperate with the control panel 14 to facilitate the user to limit the operating time and power of the equipment, thereby ensuring that the equipment operates in a protection-first-operation-later mode, thereby avoiding over-limit and over-discharge, and improving the safety and detection effect of the equipment.
[0023] In a preferred embodiment: the top of the cam 9 is rotatably connected to the bottom of the main body 1 , the top of the limit block 8 is fixedly assembled with the bottom of the clamping plate 6 , there are two clamping plates 6 , and the two clamping plates 6 are symmetrically distributed along the inner wall of the main body 1 .
[0024] In the above structure, through the provided slide groove 7, limit block 8, cam 9, and handle 10 structure, the user can rotate the handle 10 to make the limit block 8 drive the clamping plate 6 to move in the opposite direction, thereby facilitating the user to use the device to test lithium batteries of different sizes, thereby increasing the scope of use of the device.
[0025] In a preferred embodiment: a through hole is formed on the inner wall of the main body 1 , and the inner wall of the through hole is slidably connected to the outer wall of the clamping plate 6 .
[0026] In the above structure, through the through-hole structure, the pressure exerted on the limit block 8 when the cam 9 rotates is transmitted to the clamp 6 and the limit rod 16, so that the clamp 6 compresses the strong spring 17 to move, thereby achieving the effect of testing the main bodies 5 of different sizes, thereby increasing the scope of use of the equipment and improving the stability of the main body 5 during the test process.
[0027] In a preferred embodiment, one end of the strong spring 17 abuts against the inner wall of the main body 1 , and the other end of the strong spring 17 abuts against the outer wall of the clamping plate 6 .
[0028] In the above structure, by setting up the strong spring 17 structure, after the user installs the main body 5, the elasticity of the strong spring 17 is used to make the outer wall of the clamp 6 always close to the outer wall of the main body 5, so that the main body 5 is clamped by the two clamps 6, thereby ensuring that the main body 5 will not be offset during operation and pull the circuit loose, thereby improving the stability of the main body 5.
[0029] Working principle: First, after the user assembles the device, the cam 9 can be rotated synchronously by turning the handle 10. After the rotation, the outer wall of the cam 9 conflicts with the outer wall of the limit block 8, so that the cam 9 gradually pushes the limit block 8 to move. At this time, the movement of the limit block 8 will drive the splint 6 and the limit rod 16 to move synchronously and compress the strong spring 17, so that the user can place the body 5 in the main body 1, and then use the four-wire connection method to make the four-wire system backward compatible with the two-wire connection method. When wiring, you only need to short-circuit A+ and V+, v- and A- respectively. Through the four-wire connection method, in the CC constant current mode, set a discharge current of 19.5A, and then test the body 5. Use the control panel 14 to set the operating time, voltage and resistance of the discharge power supply 2. After the body 5 is connected to the circuit, the data will be displayed on the TFT color screen 15 to achieve the detection effect. When the temperature of the discharge power supply 2 rises, the NTC sensor 3 will automatically control the operation of the heat exhauster 4 through the controller to achieve the intelligent temperature control effect.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electronic load device for testing the capacity of a small lithium battery, comprising a main body (1), characterized in that: The right side of the main body (1) is fixedly equipped with a discharge power supply (2), an NTC sensor (3), and a heat dissipator (4); the left side of the main body (1) is fixedly equipped with a wiring tube (11), a transformer (12), a rheostat (13), a control panel (14), and a TFT color screen (15); the inner wall of the main body (1) is provided with a body (5); the bottom of the inner wall of the main body (1) is provided with a slide groove (7); the inner wall of the slide groove (7) is slidably connected to a limit block (8); the inner wall of the main body (1) is slidably connected to a clamp (6); the outer wall of the clamp (6) is fixedly equipped with a limit rod (16); the outer wall of the limit rod (16) is sleeved with a strong spring (17); the outer wall of the strong spring (17) is tightly fitted with a cam (9); and the bottom of the cam (9) is fixedly equipped with a handle (10).
2. The electronic load device for testing the capacity of a small lithium battery according to claim 1, characterized in that: The number of the wiring tubes (11) is four, and the four wiring tubes (11) are evenly distributed along the outer wall of the main body (1). A positioning plate is fixedly mounted on the left side of the main body (1), and a timer and a controller are fixedly mounted on the bottom of the positioning plate, respectively. The controller is electrically connected to the timer, the wiring tubes (11), the transformer (12), the TFT color screen (15) and the control panel (14), respectively.
3. The electronic load device for testing the capacity of a small lithium battery according to claim 1, characterized in that: The top of the cam (9) is rotatably connected to the bottom of the main body (1), and the top of the limit block (8) is fixedly assembled to the bottom of the clamping plate (6). There are two clamping plates (6), and the two clamping plates (6) are symmetrically distributed along the inner wall of the main body (1).
4. The electronic load device for testing the capacity of a small lithium battery according to claim 1, characterized in that: The inner wall of the main body (1) is provided with a through hole, and the inner wall of the through hole is slidably connected to the outer wall of the clamping plate (6).
5. The electronic load device for testing the capacity of a small lithium battery according to claim 1, characterized in that: One end of the strong spring (17) contacts the inner wall of the main body (1), and the other end of the strong spring (17) contacts the outer wall of the clamping plate (6).