Square lithium battery charging and discharging test cabinet device

Abstract

The utility model relates to a kind of square lithium battery charge-discharge test cabinet device, including frame, frame includes set frame top plate and frame bottom plate, second fixed plate and first fixed plate are arranged between frame bottom plate and frame top plate up and down parallelly, tool box is set between first fixed plate and frame bottom plate, multiple test areas are arranged between second fixed plate and frame top plate left and right symmetry, each test area includes jig bottom plate, probe mounting plate, fixed rod and test unit.The utility model can adjust size, current probe center spacing;Test fixture performance is good, and different specifications of battery compatibility is good.

Description

Technical Field

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

[0002] With the continuous development and innovation of the new energy industry, lithium batteries are widely used in electronic devices, electric vehicles, energy storage grids, and other fields due to their advantages such as long cycle life, high energy density, safety, and environmental friendliness. In the energy storage field, prismatic lithium batteries account for the vast majority of usage, making electrical performance testing of different types and sizes of batteries particularly important. However, due to the differences in battery types and sizes, electrical performance testing often requires preparing different test leads for repeated switching, and sometimes even external welding of flexible plates, consuming a significant amount of time and labor.

[0003] Testing square lithium batteries requires adaptability to different sizes and electrode center-to-center distances. Existing test cabinet solutions have the following drawbacks: (1) Poor contact stability: In traditional vertical fixtures, the probe moves with the quick clamp. Due to the thick and stiff current line, it is difficult to fix and the quick clamp needs to move up and down, resulting in poor contact between the probe and the positive and negative terminals of the square battery. The contact resistance is high, which leads to the battery temperature being too high during testing. (2) Insufficient compatibility: A single clamp can only be used for 1-2 battery sizes and is not suitable for various specifications of directional lithium batteries; (3) Inefficient operation: The replacement time of a single fixture is also long, resulting in low testing efficiency.

[0004] The aforementioned problems result in poor test performance, high test error rate, and increased labor costs. Therefore, this utility model proposes a square lithium battery charge and discharge test cabinet device to solve the problems of poor stability, poor versatility, and inconvenience in using existing battery charge and discharge test devices. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a square lithium battery charge and discharge test cabinet device with high compatibility, high contact stability and fast adjustment function, which is suitable for electrical performance testing of lithium batteries of various specifications.

[0006] The purpose of this utility model is achieved as follows: A universal vehicle for testing the performance of square batteries includes a frame, the frame including a top plate at the top and a bottom plate at the bottom, a second fixing plate and a first fixing plate arranged vertically parallel between the bottom plate and the top plate, a toolbox between the first fixing plate and the bottom plate, and multiple test areas arranged symmetrically between the second fixing plate and the top plate, each test area including a fixture base plate, a probe mounting plate, a fixing rod and a test unit; The second fixing plate is provided with two fixture base plates on the left and right, and a probe mounting plate is provided above each fixture base plate. A fixing rod is provided between the probe mounting plate and the fixture base plate. Multiple test units are arranged in an array between the fixture base plate and the probe mounting plate. Each test unit includes a probe, a battery slot, a moving guide assembly, and a manual clamp assembly. The probe mounting plate is connected to multiple sets of square lithium batteries through probes, and each lithium battery has a corresponding battery slot. The battery compartment includes a battery compartment base plate and a limiting plate assembly. The limiting plate assembly is vertically disposed on the battery compartment base plate and includes a left limiting plate, a right limiting plate, and a rear limiting plate. The left and right limiting plates are disposed at the left and right ends of the battery compartment, and the rear limiting plate is disposed at the rear end of the battery compartment, thereby forming a battery compartment with an opening on one side. The left, right, and rear limiting plates are respectively moved and adjusted on the battery compartment base plate by a moving guide assembly. The manual clamp assembly includes a manual clamp, a connecting rod, and a floating joint. One end of the connecting rod passes through the fixture base plate and the second fixed plate and connects to the floating joint. The other end of the connecting rod is connected to the manual clamp. The floating joint is connected to the battery slot base plate of the battery slot. The manual clamp is positioned between the first fixed plate and the second fixed plate.

[0007] Preferably, the fixing rod is located at the four corners of the fixture base plate, and the top of the fixing rod passes through the probe mounting plate and is fixed by bolts, so that the height of the probe mounting plate can be adjusted.

[0008] Preferably, the probe mounting plate is provided with multiple sets of probe holes, each set of probe holes consists of two probe holes arranged in parallel front to back: an outer probe hole and an inner probe hole. Each probe hole is provided with a probe, the probe in the outer probe hole is the outer probe, and the probe in the inner probe hole is the inner probe.

[0009] Preferably, the inner probe is fixedly disposed in the inner probe hole, and the outer probe is slidably disposed in the outer probe hole by means of a screw rotating knob, which is suitable for charging and discharging tests of square lithium batteries with different center distances.

[0010] Preferably, the bottom of the inner probe and the outer probe of each set of probe holes are connected to the two ends of the top surface of the same lithium battery, and a set of battery slots is provided below each set of probe holes, corresponding to one lithium battery.

[0011] Preferably, the left limiting plate, the right limiting plate, and the rear limiting plate are all slidably disposed on the bottom plate of the battery compartment. The bottom of the left limiting plate, the right limiting plate, and the rear limiting plate are each provided with two guide holes, and the bottom plate of the battery compartment is provided with corresponding sliding grooves, so that the left limiting plate, the right limiting plate, and the rear limiting plate can move on the bottom plate of the battery compartment through the moving guide assembly.

[0012] Preferably, the moving guide assembly includes a front guide rod and a rear guide rod, which are respectively disposed in two guide holes of the left limit plate, the right limit plate, or the rear limit plate. The front guide rod and the rear guide rod are respectively disposed on a slide rail, which is disposed on the base plate of the fixture. After moving to the designated position in the guide hole, the guide rod is fixed in the guide hole by bolts. Thus, by adjusting the position of the left limit plate, the right limit plate, and the rear limit plate, charge and discharge tests can be performed on square lithium batteries of different specifications and sizes.

[0013] Preferably, the frame is provided with rollers at the four corners of its bottom for easy pushing.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention provides a square lithium battery charge / discharge test cabinet device, in which probes and current lines are mounted on a probe mounting plate. It has the following advantages: (1) Zero floating contact: The structure is simple and stable. The fixed probe reduces the contact resistance to 1mΩ, which improves the clamping of the battery. (2) Compatibility breakthrough: Adjustable size and current probe center spacing, with good compatibility with different specifications of batteries, suitable for charging and discharging tests of different models of square lithium batteries; (3) Improved efficiency: Convenient operation, quick fixation, greatly shortened changeover time, and greatly improved testing efficiency; (4) Improved test results: The manual clamp assembly is installed at the bottom of the battery compartment to avoid problems such as the current wire being too thick and hard to fix and the quick clamp needing to move up and down, ensuring good contact between the probe and the lithium battery terminal and improving the test results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is the front view of the present invention.

[0017] Figure 3 This is a side view of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of a test unit of this utility model.

[0019] In the picture: Frame 1, Frame base plate 101, Frame top plate 102, First fixing plate 103, Second fixing plate 104, Fixture base plate 2, Probe mounting plate 3, Probe hole 301, Probe 302, Screw rotary knob 303, Fixing rod 4, Battery slot 5, Battery slot base plate 501, Limiting plate assembly 502, Left limiting plate 5021, Right limiting plate 5022, Rear limiting plate 5023, Moving guide assembly 6, Front guide rod 601, Rear guide rod 602, Manual clamp assembly 7, Manual clamp 701, Connecting rod 702, Floating joint 703, Lithium battery 8, Roller 9. Detailed Implementation

[0020] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1

[0021] See Figures 1-4 , Figure 1 A schematic diagram of a square lithium battery charge and discharge test cabinet device is shown. As shown in the figure, the square lithium battery charge and discharge test cabinet device of this embodiment 1 includes a frame 1. The frame 1 includes a frame top plate 102 disposed at the top and a frame bottom plate 101 disposed at the bottom. A second fixing plate 104 and a first fixing plate 103 arranged vertically parallel to each other are provided between the frame bottom plate 101 and the frame top plate 102. A toolbox is disposed between the first fixing plate 103 and the frame bottom plate 101. Two test areas are arranged symmetrically from left to right between the second fixing plate 104 and the frame top plate 102. Each test area includes a fixture base plate 2, a probe mounting plate 3, a fixing rod 4, and a test unit.

[0022] The second fixing plate 104 is provided with two fixture base plates 2 on the left and right. Each fixture base plate 2 is provided with a probe mounting plate 3 on its upper part. The probe mounting plate 3 is connected to the fixture base plate 2 by a fixing rod 4. The fixing rod 4 is located at the four corners of the fixture base plate 2. The top of the fixing rod 4 passes through the probe mounting plate 3 and is fixed by bolts, so that the height position of the probe mounting plate 3 can be adjusted.

[0023] Multiple arrayed test units are arranged between the fixture base plate 2 and the probe mounting plate 3. Each test unit includes a probe 302, a battery slot 5, a moving guide assembly 6, and a manual clamp assembly 7. The probe mounting plate 3 has multiple sets of probe holes 301. Each set of probe holes 301 consists of two probe holes 301 arranged in parallel front and back: an outer probe hole and an inner probe hole. Each probe hole 301 contains a probe 302. The probe in the outer probe hole is the outer probe, and the probe in the inner probe hole is the inner probe. The inner probe is fixedly installed in the inner probe hole. The outer probe is adjustablely slidably installed in the outer probe hole by means of a screw rotation knob 303. This method is suitable for charging and discharging tests of square lithium batteries 8 with different center distances. The bottom of the inner and outer probes of each set of probe holes 301 are connected to the two ends of the top surface of the same lithium battery 8.

[0024] Below each set of probe holes 301 is a set of battery slots 5, corresponding to one lithium battery 8; the battery slot 5 includes a battery slot bottom plate 501 and a limiting plate assembly 502. The limiting plate assembly 502 is vertically arranged on the battery slot bottom plate 501. The limiting plate assembly 502 includes a left limiting plate 5021, a right limiting plate 5022 and a rear limiting plate 5023. The left limiting plate 5021 and the right limiting plate 5022 are arranged at the left and right ends of the battery slot 5, and the rear limiting plate 5023 is arranged at the rear end of the battery slot 5, thereby forming a battery slot 5 with an opening on one side; The left limiting plate 5021, right limiting plate 5022, and rear limiting plate 5023 are all slidably disposed on the battery compartment bottom plate 501. The bottom of the left limiting plate 5021, right limiting plate 5022, and rear limiting plate 5023 are respectively provided with two guide holes, and the battery compartment bottom plate 501 is provided with corresponding sliding grooves, so that the left limiting plate 5021, right limiting plate 5022, and rear limiting plate 5023 can move on the battery compartment bottom plate 501 through the moving guide assembly 6.

[0025] The moving guide assembly 6 includes a front guide rod 601 and a rear guide rod 602. The front guide rod 601 and the rear guide rod 602 are respectively disposed in two guide holes of the left limiting plate 5021, the right limiting plate 5022, or the rear limiting plate 5023. The front guide rod 601 and the rear guide rod 602 are respectively disposed on a slide rail, which is disposed on the fixture base plate 2. After moving to the designated position in the guide hole, the assembly is fixed in the guide hole by bolts. Thus, by adjusting the position of the left limiting plate 5021, the right limiting plate 5022, and the rear limiting plate 5023, charge and discharge tests can be performed on square lithium batteries 8 of different specifications and sizes.

[0026] The manual clamp assembly 7 includes a manual clamp 701, a connecting rod 702, and a floating connector 703. One end of the connecting rod 702 passes through the fixture base plate 2 and the second fixing plate 104 and is connected to the floating connector 703. The other end of the connecting rod 702 is connected to the manual clamp 701. The floating connector 703 is connected to the battery slot base plate 501 of the battery slot 5. The manual clamp 701 is disposed between the first fixing plate 103 and the second fixing plate 104.

[0027] Thus, the size of the battery slot 5 is adjusted by sliding the movable guide component 6, and the manual clamp component 7 moves up and down to clamp and hold the square lithium battery 8.

[0028] The frame is equipped with rollers 9 at the four corners of its bottom for easy pushing. Example 2

[0029] The general-purpose vehicle used for testing the performance of square batteries in Embodiment 2 differs from Embodiment 1 in that: Left limit plate 5021 and right limit plate 5022: The guide hole is equipped with a scale. Rear limit plate 5023: with elastic ejector pin, adapts to battery thickness; Probe mounting plate 3: Made of aluminum alloy plate, with a copper busbar built into the probe hole 301 for conductive path; Front guide rod 601 and rear guide rod 602: made of chrome-plated steel rods.

[0030] Working principle: This utility model provides a square lithium battery charge and discharge test cabinet device, comprising the following: (1) Chassis module: Double-layer fixing plate: Separates the toolbox area from the testing area; Roller base: with braked casters, load capacity ≥500kg.

[0031] (2) Core structure of the test unit: Fixed probe board: Made of aluminum alloy plate, with arrayed probe holes and built-in copper busbar conductive path; Dual-mode probe: Inner probe: Fixed type, directly soldered to copper busbar; External probe: with screw-type rotary knob, lateral adjustment range ±50mm; (3) Three-dimensional limiting system: Left / Right Limiting Plate: A scale is installed inside the guide hole; Rear limit plate: with elastic ejector pins, adapting to battery thickness; (4) Linkage clamping mechanism: Dual guide rods: The front and rear guide rods are made of chrome-plated steel bars; Manual clamps + floating connector: provide a constant pressure of 2000N The operation procedure of the square lithium battery charge and discharge test cabinet device of this utility model is as follows: 1. Battery positioning: Slide the left / right limit plates to the battery width mark and tighten the bolts; Insert the battery, and then tighten the rear limit plate. 2. Probe adjustment: Rotate the screw knob to move the outer probe and match the center distance of the pole; 3. Clamping test: Move the manual clamp; the battery slot rises along the guide rod, and the probe presses into the terminal. The floating joint compensates for ±2mm assembly error, ensuring uniform pressure.

[0032] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A square lithium battery charge / discharge test cabinet device, characterized in that: It includes a frame (1), the frame (1) includes a frame top plate (102) at the top and a frame bottom plate (101) at the bottom, a second fixing plate (104) and a first fixing plate (103) arranged vertically and horizontally between the frame bottom plate (101) and the frame top plate (102), a toolbox is provided between the first fixing plate (103) and the frame bottom plate (101), and multiple test areas are arranged symmetrically from left to right between the second fixing plate (104) and the frame top plate (102). Each test area includes a fixture bottom plate (2), a probe mounting plate (3), a fixing rod (4) and a test unit; The second fixing plate (104) is provided with two jig base plates (2) on the left and right sides. Each jig base plate (2) is provided with a probe mounting plate (3) above it. The probe mounting plate (3) is connected to the jig base plate (2) by a fixing rod (4). Multiple test units are arranged in an array between the fixture base plate (2) and the probe mounting plate (3). The test unit includes a probe (302), a battery slot (5), a moving guide assembly (6), and a manual clamp assembly (7). The probe mounting plate (3) is connected to multiple square lithium batteries (8) through the probe (302). Each lithium battery (8) is provided with a corresponding battery slot (5). The battery slot (5) includes a battery slot base plate (501) and a limiting plate assembly (502). The limiting plate assembly (502) is vertically disposed on the battery slot base plate (501). The limiting plate assembly (502) includes a left limiting plate (5021), a right limiting plate (5022), and a rear limiting plate (5023). The left limiting plate (5021) and the right limiting plate (5022) are disposed at the left and right ends of the battery slot (5), and the rear limiting plate (5023) is disposed at the rear end of the battery slot (5), thereby forming a battery slot (5) with an opening on one side. The left limiting plate (5021), the right limiting plate (5022), and the rear limiting plate (5023) are respectively moved and adjusted on the battery slot base plate (501) by a moving guide assembly (6). The manual clamp assembly (7) includes a manual clamp (701), a connecting rod (702), and a floating connector (703). One end of the connecting rod (702) passes through the fixture base plate (2) and the second fixing plate (104) and is connected to the floating connector (703). The other end of the connecting rod (702) is connected to the manual clamp (701). The floating connector (703) is connected to the battery slot base plate (501) of the battery slot (5). The manual clamp (701) is located between the first fixing plate (103) and the second fixing plate (104).

2. The square lithium battery charge / discharge test cabinet device according to claim 1, characterized in that: The fixing rod (4) is set at the four corners of the fixture base plate (2). The top of the fixing rod (4) passes through the probe mounting plate (3) and is fixed by bolts, so that the height position of the probe mounting plate (3) can be adjusted.

3. The square lithium battery charge / discharge test cabinet device according to claim 1, characterized in that: The probe mounting plate (3) is provided with multiple sets of probe holes (301). Each set of probe holes (301) consists of two probe holes (301) arranged in parallel front and back: an outer probe hole and an inner probe hole. Each probe hole (301) is provided with a probe (302). The probe hole located in the outer probe hole is the outer probe, and the probe hole located in the inner probe hole is the inner probe.

4. The square lithium battery charge / discharge test cabinet device according to claim 3, characterized in that: The inner probe is fixedly installed in the inner probe hole, and the outer probe is adjustablely slidably installed in the outer probe hole by means of a screw rotating knob (303). This method is suitable for charging and discharging tests of square lithium batteries (8) with different center distances.

5. The square lithium battery charge / discharge test cabinet device according to claim 4, characterized in that: The bottom of the inner probe and the outer probe of each set of probe holes (301) are connected to the top two ends of the same lithium battery (8). A set of battery slots (5) is provided below each set of probe holes (301), corresponding to one lithium battery (8).

6. The square lithium battery charge / discharge test cabinet device according to claim 1, characterized in that: The left limiting plate (5021), right limiting plate (5022) and rear limiting plate (5023) are all slidably disposed on the bottom plate (501) of the battery compartment. The bottom of the left limiting plate (5021), right limiting plate (5022) and rear limiting plate (5023) are respectively provided with two guide holes. The bottom plate (501) of the battery compartment is provided with corresponding sliding grooves, so that the left limiting plate (5021), right limiting plate (5022) and rear limiting plate (5023) can move on the bottom plate (501) of the battery compartment through the moving guide assembly (6).

7. The square lithium battery charge / discharge test cabinet device according to claim 6, characterized in that: The moving guide assembly (6) includes a front guide rod (601) and a rear guide rod (602). The front guide rod (601) and the rear guide rod (602) are respectively set in two guide holes of the left limit plate (5021), the right limit plate (5022) or the rear limit plate (5023). The front guide rod (601) and the rear guide rod (602) are respectively set on the slide rail, which is set on the fixture base plate (2). After moving to the designated position in the guide hole, it is fixed in the guide hole by bolts. Thus, by adjusting the position of the left limit plate (5021), the right limit plate (5022) and the rear limit plate (5023), it is possible to perform charge and discharge tests on square lithium batteries (8) of different specifications and sizes.

8. The square lithium battery charge / discharge test cabinet device according to claim 1, characterized in that: The frame is equipped with rollers (9) at the four corners of its bottom for easy pushing.

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