Charging and discharging measuring device suitable for batteries with different sizes and specifications

Abstract

The utility model discloses a charging and discharging measuring device suitable for batteries of different dimensions, which relates to the technical field of battery testing and comprises a detection cabinet, a cabinet door hinged to the front of the detection cabinet, an observation window arranged on the surface of the cabinet door, a charging module mounted on the upper surface of the detection cabinet, and a discharging module mounted on the upper surface of the detection cabinet. A controller is arranged on the right side of the detection cabinet, a sliding groove is formed in the upper surface of a fixed plate, a contact is installed on the surface of a second installation plate, a ventilation pipeline is installed on the outer side of a movable plate, a cooling fan is installed in the ventilation pipeline, through holes are formed in the inner side faces of clamping plates, vertical grooves are formed in the upper surfaces of the clamping plates, and the vertical grooves communicate with the corresponding through holes. Through the arrangement of the movable plate, the clamping plate, the contact, the contact and the controller, the purpose of improving the use convenience is achieved, and through the arrangement of the ventilation pipeline, the cooling fan, the through hole and the vertical groove, the purpose of improving the safety performance of the measuring device is achieved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically to a battery charge and discharge measurement device suitable for different sizes and specifications. Background Technology

[0002] With the rapid development and promotion of the electric vehicle industry, OEMs have placed higher demands on the energy density, safety, cost, and battery management technology of power lithium-ion batteries. Square lithium-ion batteries, with their advantages of simple structure, high energy density, good safety, ease of assembly and capacity expansion, high battery pack energy efficiency, and simple management system, are gradually becoming one of the most important energy storage components in the power systems of electric vehicles (especially electric commercial vehicles). Currently, there are numerous sizes and models of square lithium-ion batteries used on a large scale. According to my country's 2017 standard for square battery dimensions for electric vehicles, "G Battery Testing / T34013-2017 Specifications and Dimensions of Power Batteries for Electric Vehicles," there are still more than 100 different sizes and models of square lithium-ion batteries currently in the market. However, universal charge and discharge test fixtures for square lithium-ion batteries are relatively rare in the current market.

[0003] A smart battery pack charge / discharge testing device disclosed in Chinese Utility Model Patent Application Publication CN217278832U, while convenient for clamping and positioning the testing module to prevent displacement during testing, facilitating cooling, purifying the air inside the testing cabinet to ensure accurate test results, and easily removing moisture from the testing cabinet and replacing the fiber moisture-absorbing plate, has several drawbacks. The device requires manual rotation of long bolts during battery clamping, which is inconvenient and hinders proper use. Furthermore, the tight fit between the clamp and the battery prevents adequate heat dissipation, potentially causing localized overheating during charging / discharging tests and leading to accidents. This results in poor safety performance during testing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a battery charge and discharge measurement device suitable for different sizes and specifications, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery charging and discharging measurement device suitable for different sizes and specifications, comprising a testing cabinet. The testing cabinet has a hinged door on its front, an observation window on the surface of the door, a charging module mounted on the upper surface of the testing cabinet, a discharging module mounted on the upper surface of the testing cabinet, a controller on the right side of the testing cabinet, ventilation windows on both sides of the testing cabinet, a fixed plate fixedly connected inside the testing cabinet, a sliding groove on the upper surface of the fixed plate, a slider slidably connected to the surface of the sliding groove, and a movable... The movable plate has a groove on its inner side, and a clamping plate is slidably connected to the surface of the groove. The battery body is clamped on the inner side of the clamping plate. A second spring is fixedly connected to the inner side of the groove, and a first mounting plate is fixedly connected to the other end of the second spring. Contacts are installed on the surface of the first mounting plate. A second mounting plate is fixedly connected to the inner side of the clamping plate, and contacts are installed on the surface of the second mounting plate. A ventilation duct is installed on the outer side of the movable plate, and a cooling fan is installed inside the ventilation duct. A through hole is opened on the inner side of the clamping plate, and a vertical groove is opened on the upper surface of the clamping plate, which communicates with the corresponding through hole.

[0006] Optionally, there are four ventilation windows, which are symmetrically distributed in pairs on both sides of the testing cabinet.

[0007] Optionally, a limiting groove is formed on the upper surface of the fixed plate, and a limiting block is fixedly connected to the lower surface of the movable plate, with the limiting block sliding within the limiting groove.

[0008] Optionally, a servo motor is installed on the right side of the testing cabinet. A bidirectional lead screw is fixedly connected to the output end of the servo motor. Bearings are provided at the connection points between the two ends of the bidirectional lead screw and the surface of the testing cabinet. A slider is threaded onto the surface of the bidirectional lead screw. There are two sliders and two moving plates on each fixed plate, and they are symmetrically distributed.

[0009] Optionally, there are two fixing plates, and each fixing plate is provided with the same moving plate and clamping plate.

[0010] Optionally, a first spring is fixedly connected to the inner side of the groove, and a clamping plate is fixedly connected to the other end of the first spring. There are two first springs in each groove, and they are symmetrically distributed.

[0011] Optionally, the contacts and contacts are positioned opposite each other, and the contacts and contacts are set on the control circuit of the controller through wires. The controller is electrically connected to the charging module, the discharging module and the servo motor through wires.

[0012] Optionally, each clamp plate has several through holes and vertical slots, which are distributed in a rectangular array.

[0013] This utility model provides a battery charge and discharge measurement device suitable for different sizes and specifications, which has the following beneficial effects:

[0014] 1. This battery charging and discharging measurement device, applicable to different sizes and specifications, achieves ease of use through the configuration of the moving plate, clamping plate, contacts, contacts, and controller. During the battery clamping process, the device can automatically clamp batteries of different sizes by controlling the stop of the slider and moving plate, making it highly applicable and convenient to clamp, thus improving ease of use.

[0015] 2. This battery charging and discharging measurement device, applicable to various battery sizes, utilizes ventilation ducts, cooling fans, through holes, and vertical slots to prevent localized overheating at the clamping position. During use, after clamping the battery, the through holes and vertical slots on the clamping plate allow outside air to enter through the slots and through holes by turning on the cooling fan, and then exit through the ventilation ducts. This accelerated airflow effectively cools the battery. During this process, the clamping plate abuts against the side of the battery, and air enters through the through holes via the vertical slots, carrying away heat from the contact area between the clamping plate and the battery. This prevents overheating due to insufficient heat dissipation at the clamping position, reducing the probability of accidents caused by high temperatures and improving the safety performance of the measurement device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-section of the present invention;

[0019] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A;

[0020] Figure 5 This utility model Figure 3 Schematic diagram of the structure at point B;

[0021] Figure 6 This is a three-dimensional structural diagram of the movable plate of this utility model;

[0022] Figure 7 This is a top view of the structure of the fixing plate of this utility model.

[0023] In the diagram: 1. Testing cabinet; 101. Controller; 2. Cabinet door; 3. Observation window; 4. Charging module; 5. Discharging module; 6. Ventilation window; 7. Fixing plate; 701. Limiting groove; 8. Sliding groove; 9. Servo motor; 10. Bidirectional lead screw; 11. Sliding block; 12. Moving plate; 121. Limiting block; 13. Groove; 14. First spring; 15. Clamping plate; 16. Battery body; 17. Second spring; 18. First mounting plate; 19. Contact; 20. Second mounting plate; 21. Contact head; 22. Ventilation duct; 23. Cooling fan; 24. Through hole; 25. Vertical groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0025] Please see Figures 1 to 7This utility model provides a technical solution: a battery charging and discharging measurement device suitable for different sizes and specifications, including a testing cabinet 1. A cabinet door 2 is hinged to the front of the testing cabinet 1, and an observation window 3 is provided on the surface of the cabinet door 2. A controller 101 is provided on the right side of the testing cabinet 1. Four ventilation windows 6 are installed on both sides of the testing cabinet 1, symmetrically distributed in pairs on both sides. A fixed plate 7 is fixedly connected inside the testing cabinet 1. A sliding groove 8 is formed on the upper surface of the fixed plate 7. A limiting groove 701 is formed on the upper surface of the fixed plate 7. A limiting block 121 is fixedly connected to the lower surface of a movable plate 12, and the limiting block 121 slides within the limiting groove 701. A slider 11 is slidably connected to the surface of the sliding groove 8. A movable plate 12 is fixedly connected to the upper surface of the slider 11. A groove 13 is formed on the inner side of the movable plate 12. A clamping plate 15 is slidably connected to the surface of the groove 13, and a battery body 16 is clamped on the inner side of the clamping plate 15. A servo motor 9 is installed on the right side of the testing cabinet 1. A bidirectional lead screw 10 is fixedly connected to the output end of the servo motor 9. Bearings are provided at the connection points between the two ends of the bidirectional lead screw 10 and the surface of the testing cabinet 1. A slider 11 is threadedly connected to the surface of the bidirectional lead screw 10. There are two sliders 11 and two moving plates 12 on each fixed plate 7, which are symmetrically distributed. There are two fixed plates 7, and each fixed plate 7 is provided with the same moving plate 12 and clamping plate 15. A second spring 17 is fixedly connected to the inner side of the groove 13. The other end of the second spring 17 is fixedly connected to the first mounting plate 1. 8. The surface of the first mounting plate 18 is equipped with contacts 19. The inner side of the clamping plate 15 is fixedly connected to the second mounting plate 20. The surface of the second mounting plate 20 is equipped with contacts 21. The inner side of the groove 13 is fixedly connected to the first spring 14. The other end of the first spring 14 is fixedly connected to the clamping plate 15. There are two first springs 14 in each groove 13, and they are symmetrically distributed. The positions of the contacts 19 and contacts 21 are opposite to each other. The contacts 19 and contacts 21 are set on the control circuit of the controller 101 through wires. The controller 101 is electrically connected to the servo motor 9 through wires.

[0026] To improve ease of use, the battery body 16 to be tested is placed on the upper surface of the fixing plate 7. Then, the output end of the servo motor 9 is controlled to rotate forward by the controller 101. The servo motor 9 drives the bidirectional lead screw 10 to rotate, causing the sliders 11 connected to the threads on both sides of the bidirectional lead screw 10 to slide inward synchronously within the slide groove 8. As the sliders 11 move, the moving plate 12 moves together, so that the clamping plates 15 on the inner side of the moving plate 12 contact the battery body 16. After contact, as the movement continues, the clamping plates 15 on both sides squeeze the battery body 16 to the middle. During the squeezing process, the clamping plates 15 enter the groove 13 under the reaction force. The first spring 14 is squeezed and generates an outward force. When it moves to a certain position, the outward force of the first spring 14 clamps the battery body 16 between the two clamping plates 15. In the middle, at the same time, the contact 21 on the surface of the second mounting plate 20 on the inner side of the clamping plate 15 contacts the contact point 19. After contact, the circuit for the controller 101 to stop the servo motor 9 is closed, thereby controlling the slider 11 and the moving plate 12 to stop moving, thus clamping and fixing the clamping plate 15. After fixing, the battery body 16 is charged through the charging module 4. After charging is completed, the battery body 16 is discharged through the discharging module 5. During the charging and discharging process, the controller 101 adjusts the voltage and current to simulate the performance of the battery in actual use under different load conditions. In the process of clamping the battery body 16, the device can automatically clamp battery bodies 16 of different sizes by controlling the stop of the slider 11 and the moving plate 12. It has strong applicability and is convenient to clamp, thus achieving the purpose of improving ease of use. Example

[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 This utility model provides a technical solution: a battery charging and discharging measurement device suitable for different sizes and specifications, including a testing cabinet 1, a charging module 4 installed on the upper surface of the testing cabinet 1, a discharging module 5 installed on the upper surface of the testing cabinet 1, a fixed plate 7 fixedly connected inside the testing cabinet 1, a sliding groove 8 opened on the upper surface of the fixed plate 7, a slider 11 slidably connected to the surface of the sliding groove 8, a moving plate 12 fixedly connected to the upper surface of the slider 11, a ventilation duct 22 installed on the outer side of the moving plate 12, a cooling fan 23 installed inside the ventilation duct 22, a through hole 24 opened on the inner side of the clamping plate 15, a vertical groove 25 opened on the upper surface of the clamping plate 15, the vertical groove 25 communicating with the corresponding through hole 24, and each clamping plate 15 has several through holes 24 and vertical grooves 25, which are distributed in a rectangular array. The controller 101 is electrically connected to the charging module 4 and the discharging module 5 through wires.

[0028] To improve the safety performance of the measuring device, during use, after clamping the battery body 16, the surface of the clamping plate 15 has through holes 24 and vertical grooves 25. By turning on the cooling fan 23, outside air enters the groove 13 through the vertical grooves 25 and through holes 24, and then is discharged outward from the ventilation duct 22. By accelerating air circulation, heat dissipation and cooling are achieved. During this process, the clamping plate 15 abuts against the side of the battery body 16, and air enters the through holes 24 through the vertical grooves 25, thereby carrying away the heat at the contact point between the clamping plate 15 and the battery body 16. This prevents the clamping position from being unable to dissipate heat and causing local overheating, reducing the probability of accidents caused by high temperature, and achieving the goal of improving the safety performance of the measuring device.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery charge / discharge measurement device suitable for different sizes and specifications, including a testing cabinet, characterized in that: The testing cabinet has a hinged door on its front, with an observation window on the door surface. A charging module and a discharging module are installed on the upper surface of the cabinet. A controller is located on the right side of the cabinet. Ventilation windows are installed on both sides of the cabinet. A fixed plate is fixedly connected inside the cabinet. A sliding groove is formed on the upper surface of the fixed plate, and a slider is slidably connected to the surface of the groove. A movable plate is fixedly connected to the upper surface of the slider. A groove is formed on the inner side of the movable plate, and a clamping plate is slidably connected to the surface of the groove. The battery body is clamped on the inner side of the clamping plate. A second spring is fixedly connected to the inner side of the groove, and a first mounting plate is fixedly connected to the other end of the second spring. Contacts are installed on the surface of the first mounting plate. A second mounting plate is fixedly connected to the inner side of the clamping plate, and contacts are installed on the surface of the second mounting plate. A ventilation duct is installed on the outer side of the movable plate, and a cooling fan is installed inside the ventilation duct. A through hole is formed on the inner side of the clamping plate, and a vertical groove is formed on the upper surface of the clamping plate, communicating with the corresponding through hole.

2. The battery charging and discharging measuring device applicable to different size specifications according to claim 1, characterized in that: The number of ventilation windows is four, and they are symmetrically distributed in pairs on both sides of the testing cabinet.

3. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: The upper surface of the fixed plate has a limiting groove, and the lower surface of the movable plate is fixedly connected to a limiting block, which slides within the limiting groove.

4. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: A servo motor is installed on the right side of the testing cabinet. A bidirectional lead screw is fixedly connected to the output end of the servo motor. Bearings are installed at the connection points between the two ends of the bidirectional lead screw and the surface of the testing cabinet. A slider is threaded onto the surface of the bidirectional lead screw. There are two sliders and two moving plates on each fixed plate, and they are symmetrically distributed.

5. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: The number of fixed plates is two, and each fixed plate is equipped with the same movable plate and clamping plate.

6. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: A first spring is fixedly connected to the inner side of the groove, and a clamp is fixedly connected to the other end of the first spring. There are two first springs in each groove, and they are symmetrically distributed.

7. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: The contacts and contacts are positioned opposite each other, and the contacts and contacts are set on the control circuit of the controller through wires. The controller is electrically connected to the charging module, the discharging module and the servo motor through wires.

8. The battery charge / discharge measuring device applicable to different size specifications according to claim 1, characterized in that: Each clamp plate has several through holes and vertical slots, which are distributed in a rectangular array.

Images