Battery cell charging and discharging test equipment

Abstract

The utility model relates to the field of battery cell testing, and discloses battery cell charging and discharging testing equipment which comprises a supporting plate, a testing frame, a testing head, a heat dissipation frame and a heat dissipation assembly. The testing frame is fixedly arranged above the supporting plate, the testing heads are symmetrically arranged at the left end and the right end of the testing frame, the two testing heads can move close to or away from each other, and the heat dissipation frame is slidably installed at the bottom end of the testing frame. The utility model has the following advantages and effects: the battery is quickly mounted in the frame body through the mounting groove, a tester can quickly contact or separate the test electrode with or from the battery cell through the pressing plate, so as to realize the charge and discharge test on the battery cell, and after the charge and discharge test is finished, the heat dissipation cylinder can be driven to move through the pulling plate to quickly take out the battery cell, and meanwhile, the test efficiency is greatly improved. And the temperature generated by the battery cell can be quickly concentrated through the heat dissipation barrel, and is quickly cooled by the fan, so that relative normal temperature in the frame body can be kept in multi-batch measurement, and shutdown or influence on test data caused by over-high temperature is avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery cell testing technology, and in particular to a battery cell charge and discharge testing device. Background Technology

[0002] Battery cells are a crucial component of rechargeable batteries, also known as battery chips or secondary batteries. The quality of the battery cell directly determines the quality of the rechargeable battery. Different types of battery cells vary in energy density, cycle life, and safety.

[0003] Battery cell charge-discharge testing refers to a test method that charges and discharges a battery cell at a specific current to a specific cutoff voltage to evaluate the battery cell's performance. Based on the recorded data, the battery cell's discharge rate, capacity decay, and other performance indicators are calculated. At the same time, the temperature change and voltage stability of the battery cell during the discharge process are observed to evaluate the battery cell's safety and reliability.

[0004] Based on the above, the inventors believe that in the current battery cell discharge test, since there are many batches of battery cells to be tested, the battery cell testing and unloading operation needs to be optimized to shorten the operation time. At the same time, the test will carry a lot of heat, and it is also difficult to cool down the heat absorbed by the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a battery cell charging and discharging testing device that optimizes the testing process and reduces the device temperature.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a battery cell charging and discharging test device, including a tray, a test frame, a test head, a heat sink, and a heat dissipation component;

[0007] The test frame is fixed above the tray, and the test heads are symmetrically arranged at the left and right ends of the test frame. The two test heads can move closer to or further away from each other. The heat sink is slidably installed at the bottom of the test frame, and the heat dissipation component is located below the heat sink to quickly cool the heat sink.

[0008] A further feature of this invention is that the test frame includes a frame fixedly installed above the tray, an installation groove opened inside the frame, and a temperature probe embedded in the side of the frame. The installation groove has an open structure at the top and bottom.

[0009] By adopting the above technical solution, it is convenient to fill and install the battery cells into the mounting slot.

[0010] A further feature of this invention is that test holes with mounting grooves are provided at both ends of the frame.

[0011] By adopting the above technical solution, it is easier to make contact between the test head and the battery cell through the test hole.

[0012] A further feature of this invention is that the test head includes a slide cylinder fixed to the outside of the frame, a test column that slides in cooperation with the inner wall of the slide cylinder, and a support plate fixed to the end of the test column away from the slide cylinder.

[0013] By adopting the above technical solution, the test column slides inside the slide cylinder, which facilitates the needs of cell testing and quick separation.

[0014] A further feature of this invention is that the test post is coaxially fitted with the test hole, and an electrode is fixedly provided at one end of the test post near the test hole, with a wire for energizing the electrode embedded inside the test post.

[0015] By adopting the above technical solution, discharge testing of the battery cell can be achieved by contacting the electrodes with both ends of the battery cell.

[0016] A further feature of this invention is that the outer side of the support plate is fixed to the frame by a spring, and a pressure plate is fixedly provided on the outer side of the support plate.

[0017] By adopting the above technical solution, the electrode can be reset by the pressure of the spring.

[0018] A further feature of this invention is that the heat sink includes heat sink cylinders arranged below the frame, a fixing plate fixedly connected to one end of the heat sink cylinders, and a pull plate fixed to the outside of the fixing plate.

[0019] By adopting the above technical solution, heat can be concentratedly absorbed when the battery cell releases heat, so as to help with rapid cooling in the future.

[0020] A further feature of this invention is that the outer wall of the heat sink cylinder is slidably fitted with the frame plate, the top of the frame plate is fixedly mounted on the frame, and a limiting block is fixedly mounted on one end of the heat sink cylinder away from the fixed plate.

[0021] By adopting the above technical solution, the limiting block is used to limit the sliding stroke of the heat sink on the frame plate to prevent it from sliding out.

[0022] A further feature of this invention is that the heat dissipation assembly includes a central chamber fixedly connected to the bottom of a support plate, a fan fixedly installed inside the central chamber, and a filter screen fixedly installed on the top surface of the central chamber.

[0023] By adopting the above technical solution, cooling air is generated and blown towards the heat sink to quickly lower the temperature.

[0024] A further feature of this invention is that a bracket is fixedly installed on the upper surface of the tray, and the top of the bracket is fixedly connected to the frame.

[0025] By adopting the above technical solution, the frame can be placed and used stably.

[0026] The beneficial effects of this utility model are:

[0027] The battery is quickly installed into the frame through the mounting slot. Testers can use the pressure plate to quickly contact or separate the test electrodes from the battery cell, thereby realizing the charge and discharge test. After completion, the heat sink can be moved by the pull plate to quickly remove the battery cell. At the same time, the temperature generated by the battery cell can be quickly concentrated by the heat sink and rapidly cooled by the fan. This can maintain a relatively normal temperature inside the frame during multiple batches of testing, avoiding downtime caused by excessive temperature or affecting the test data. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a battery cell charge and discharge testing device provided in an embodiment of this utility model;

[0030] Figure 2 This is a schematic diagram of the test frame structure in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the heat sink frame in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the heat dissipation component in an embodiment of the present invention.

[0033] In the diagram, 1. tray; 2. test frame; 3. test head; 4. heat sink rack; 5. heat sink assembly; 11. bracket; 21. frame; 22. mounting slot; 23. temperature probe; 24. test hole; 31. slide cylinder; 32. test column; 33. support plate; 34. electrode; 35. wire; 36. spring; 37. pressure plate; 41. heat sink cylinder; 42. fixing plate; 43. pull plate; 44. frame plate; 45. limit block; 51. central chamber; 52. fan; 53. filter screen. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] This utility model embodiment specifically provides a battery cell charge and discharge testing device. Please refer to... Figure 1 It includes a tray 1, a test frame 2, a test head 3, a heat sink 4, and a heat sink assembly 5.

[0036] The test frame 2 is fixed above the support plate 1, and the test heads 3 are symmetrically arranged at the left and right ends of the test frame 2. The two test heads 3 can move closer or further away from each other, so as to meet the contact discharge and separation of the two electrodes of the battery cell. The heat sink 4 is slidably installed at the bottom of the test frame 2, and the heat sink component 5 is located below the heat sink 4 so as to quickly cool the heat sink 4 through the heat sink component 5.

[0037] Specifically, the test frame 2 includes a frame 21 fixedly installed above the tray 1, a mounting groove 22 opened inside the frame 21, and a temperature probe 23 embedded in the side of the frame 21. The temperature probe 23 detects the temperature of the battery cell during discharge. The mounting groove 22 has an open structure at the top and bottom to facilitate the filling and installation of the battery cell into the mounting groove 22.

[0038] A bracket 11 is fixedly installed on the upper surface of the tray 1. The top of the bracket 11 is fixedly connected to the frame 21 so that the frame 21 can be placed and used stably.

[0039] The frame 21 has test holes 24 at both ends of the left and right sides that communicate with the mounting slots 22. The two test holes 24 are coaxial with the two test poles of the battery cell to facilitate the test head 3 to contact the battery cell through the test holes 24.

[0040] Further, please refer to Figure 2 and Figure 3 The test head 3 includes a slide cylinder 31 fixed to the outside of the frame 21, a test column 32 that slides with the inner wall of the slide cylinder 31, and a support plate 33 fixed to the end of the test column 32 away from the slide cylinder 31. The test column 32 slides inside the slide cylinder 31 to facilitate cell testing and quick separation.

[0041] During implementation, the test post 32 is coaxially fitted with the test hole 24, and an electrode 34 is fixed at one end of the test post 32 near the test hole 24. A wire 35 for energizing the electrode 34 is embedded inside the test post 32. The wire 35 is connected to an external test circuit. By contacting the electrode 34 with both ends of the battery cell, the discharge test is achieved.

[0042] The outer side of the support plate 33 is fixed to the frame 21 by a spring 36. A pressure plate 37 is fixed on the outer side of the support plate 33. The pressure plate 37 can press the two test columns 32 towards the battery cell, so that the electrode 34 can contact it. When not needed, the force can be released and the electrode 34 can be reset by the pressure of the spring 36.

[0043] Further, please refer to Figure 3 The heat sink 4 includes a heat sink 41 arranged below the frame 21, a fixing plate 42 fixedly connected to one end of the heat sink 41, and a pull plate 43 fixed to the outside of the fixing plate 42. When the battery cell is placed, the bottom surface will contact the heat sink 41. The heat sink 41 can be made of aluminum alloy and coated with an insulating coating so that it can absorb heat in a concentrated manner when the battery cell releases heat, in order to help cool down quickly in the future.

[0044] During implementation, the outer wall of the heat sink 41 slides with the frame plate 44, the top of the frame plate 44 is fixedly mounted on the frame 21, and a limiting block 45 is fixedly mounted on the end of the heat sink 41 away from the fixed plate 42. The limiting block 45 is used to limit the sliding stroke of the heat sink 41 on the frame plate 44 to prevent it from sliding out.

[0045] By adopting the above solution, after the battery cell test is completed, the heat sink 41 can be moved outward by pulling the pull plate 43, causing the bottom of the battery cell to lose its support and fall out for removal. The heat sink 41 can then be reset by pushing the pull plate 43.

[0046] Further, please refer to Figure 4 The heat dissipation assembly 5 includes a central chamber 51 fixedly connected to the bottom of the support plate 1, a fan 52 fixedly installed in the central chamber 51, and a filter screen 53 fixedly installed on the top surface of the central chamber 51. The filter screen 53 is used to prevent dust from falling into the fan 52. After the test is completed, the fan 52 can be powered on, and then the cooling air force is generated to blow towards the heat dissipation cylinder 41 for quick cooling and convenient testing next time.

[0047] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery cell charge / discharge testing device, characterized in that: It includes a tray (1), a test frame (2), a test head (3), a heat sink (4), and a heat dissipation assembly (5); The test frame (2) is fixed above the tray (1), and the test heads (3) are symmetrically arranged at the left and right ends of the test frame (2). The two test heads (3) can move closer or further away from each other. The heat sink (4) is slidably installed at the bottom of the test frame (2), and the heat sink component (5) is located below the heat sink component (4) to quickly cool the heat sink component (4).

2. The battery cell charge / discharge testing equipment according to claim 1, characterized in that: The test frame (2) includes a frame (21) fixedly installed above the tray (1), an installation groove (22) opened inside the frame (21), and a temperature probe (23) embedded in the side of the frame (21). The installation groove (22) has an open structure at the top and bottom.

3. The battery cell charge / discharge testing equipment according to claim 2, characterized in that: The frame (21) has test holes (24) that communicate with the mounting slots (22) at both ends.

4. The battery cell charge / discharge testing equipment according to claim 3, characterized in that: The test head (3) includes a slide cylinder (31) fixed to the outside of the frame (21), a test column (32) that slides in cooperation with the inner wall of the slide cylinder (31), and a support plate (33) fixed to the end of the test column (32) away from the slide cylinder (31).

5. The battery cell charge / discharge testing device according to claim 4, characterized in that: The test post (32) is coaxially fitted with the test hole (24), and an electrode (34) is fixedly provided at one end of the test post (32) near the test hole (24). A wire (35) for energizing the electrode (34) is embedded inside the test post (32).

6. The battery cell charge / discharge testing equipment according to claim 5, characterized in that: The outer side of the support plate (33) is fixed to the frame (21) by a spring (36), and a pressure plate (37) is fixed on the outer side of the support plate (33).

7. The battery cell charge / discharge testing equipment according to claim 6, characterized in that: The heat sink (4) includes a heat sink (41) arranged below the frame (21), a fixing plate (42) fixedly connected to one end of the heat sink (41), and a pull plate (43) fixed to the outside of the fixing plate (42).

8. The battery cell charge / discharge testing equipment according to claim 7, characterized in that: The outer wall of the heat sink (41) is slidably fitted with the frame plate (44), the top of the frame plate (44) is fixedly mounted on the frame (21), and a limiting block (45) is fixedly mounted on one end of the heat sink (41) away from the fixing plate (42).

9. The battery cell charge / discharge testing device according to claim 8, characterized in that: The heat dissipation assembly (5) includes a central chamber (51) whose bottom end is fixedly connected to the support plate (1), a fan (52) fixedly installed in the central chamber (51), and a filter screen (53) fixedly installed on the top surface of the central chamber (51).

10. A battery cell charge / discharge testing device according to claim 9, characterized in that: A bracket (11) is fixedly installed on the upper surface of the tray (1), and the top of the bracket (11) is fixedly connected to the frame (21).

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