A battery aging test apparatus

Abstract

The application relates to the technical field of batteries, in particular to a battery aging test equipment which comprises a frame, the frame has a containing cavity enclosed by two side plates, the upper part of the containing cavity is provided with a precision detection piece, the inner side surfaces of the two side plates are provided with a plurality of pairs of outer tracks arranged in layers from top to bottom, each pair of outer tracks is slidably connected with a drawer type assembly, so that the plurality of drawer type assemblies are contained in the containing cavity and form a multilayer structure with intervals from top to bottom, the drawer type assembly comprises an inner track slidably connected with the outer track, a pull plate connected with the inner track, a plurality of test pieces arranged at the front part of the pull plate and used for battery aging test, and a board card arranged at the rear part of the pull plate and independently connected with the precision detection piece, wherein the plurality of test pieces are electrically connected with the board card respectively. The aging test equipment has high working condition simulation degree, high test precision, safety controllability and high intelligent degree.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery aging test device. Background Technology

[0002] With technological advancements, the fields of new energy vehicles, electrochemical energy storage, portable digital devices, and industrial backup power supplies are rapidly evolving. The installed capacity and application scenarios of electrochemical energy storage devices such as lithium batteries, sodium-ion batteries, and lead-acid batteries continue to expand, becoming the core driving force and energy storage carrier of the new energy industry. The battery's capacity retention capability, internal resistance stability, cycle life, and thermal safety performance directly determine the operational reliability, range, and service life of terminal equipment, and are key factors affecting the safety and market competitiveness of new energy products.

[0003] During actual service, batteries are subjected to multiple coupled stresses from charge-discharge cycles, temperature fluctuations, load fluctuations, and voltage disturbances. With increasing service time, irreversible aging and degradation occur, leading not only to performance issues such as capacity reduction, range degradation, and malfunctions, but also to serious safety accidents such as battery bulging, leakage, micro-short circuits, and even thermal runaway, fire, and explosion. Therefore, in the stages of new battery product development, factory quality inspection, batch sampling, and lifespan calibration, there is an urgent need to simulate the real-world operating conditions of a battery throughout its entire lifecycle using dedicated aging testing equipment. This allows for the accelerated induction of potential failure defects and the accurate acquisition of key parameters such as battery cycle life, capacity degradation patterns, internal resistance changes, and safety thresholds. This provides reliable data support for optimizing battery material formulations, improving structures, quality grading, and optimizing BMS control strategies.

[0004] As industry standardization continues to improve, a series of battery reliability testing standards, such as GB / T31484, have put forward stringent requirements for the accuracy of operating condition simulation, consistency of data acquisition, safety protection level, and test standardization of aging tests. However, existing conventional aging test solutions generally suffer from problems such as single operating condition simulation, poor consistency of multi-channel testing, lagging anomaly monitoring, weak data traceability, and high test energy consumption. These problems can easily lead to distorted test data, missed detection of hidden defects, and waste of test energy, which seriously restricts the efficiency of battery quality inspection and product quality upgrades. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a battery aging test device to solve the technical problems of the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a battery aging test device, comprising a frame having a receiving cavity enclosed by two side plates, a precision testing component being disposed at the upper part of the receiving cavity, and several pairs of outer rails arranged vertically on the inner sides of the two side plates, each pair of outer rails being slidably connected to a drawer-type component, so that several drawer-type components are housed in the receiving cavity and form a multi-layer structure with vertical spacing, the drawer-type component comprising an inner rail slidably connected to the outer rails, a pull plate connected to the inner rails, several test components disposed at the front of the pull plate and used for battery aging testing, and a board disposed at the rear of the pull plate and independently connected to the precision testing component, wherein the several test components are electrically connected to the board respectively.

[0007] Furthermore, the frame is also provided with a back panel that is connected to the two side panels and can be opened and closed. The side panel includes an inner panel and several crossbars connected to the inner panel. The inner panel is connected to the back panel, and the outer rail is provided on the inner side of the crossbars.

[0008] Furthermore, the frame is also provided with a partition with a window and located inside the back panel. The partition is located at the connection between the inner panel and the crossbar, and a containment area is formed between the partition and the back panel.

[0009] Furthermore, the precision testing component is a digital multimeter.

[0010] Furthermore, the drawer-type assembly also includes a cable tray located around the periphery of the board and a cable chain located inside the pull-out plate.

[0011] Furthermore, the test piece includes a base, a floating plate disposed above the base, and a first adjusting rod passing through the floating plate and connected to the base. An elastic element and a limiting post are disposed between the base and the floating plate.

[0012] Furthermore, the test piece also includes a pressure block disposed on the rear side of the first adjusting rod.

[0013] Furthermore, the test piece also includes two adapter blocks connected to the floating plate and two needle blocks connected to the adapter blocks, with a second adjusting rod provided between the adapter blocks and the floating plate.

[0014] Furthermore, the needle block is equipped with downward-facing probes, and the distance between the two probes ranges from 8 to 40 mm.

[0015] Compared with the prior art, the technical solution of this application has the following advantages: By configuring a dedicated frame with a receiving cavity, and adopting an independent and layered drawer-type structure inside the receiving cavity to accommodate several drawer-type components, this application can realize independent pull-out operation and independently complete the picking, placing, testing and clamping of the battery under test, thereby achieving the accuracy of multi-channel parallel or independent testing. It can meet the usage requirements of aging tests on batteries of different batches and specifications at the same time. Furthermore, the use of precision testing components improves data traceability, making it intelligent, safe and controllable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only part of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the frame structure from one perspective in this invention; Figure 3 This is a schematic diagram of the framework from another perspective in this invention; Figure 4 This is a schematic diagram of the drawer-type component in this invention; Figure 5 This is a schematic diagram of the structure of the test piece in this invention.

[0018] Explanation of icon numbers: 1-Frame, 11-Accommodation cavity, 12-Side plate, 121-Inner plate, 122-Crossbar, 13-Back plate, 14-Partition, 15-Outer rail, 16-Accommodation area; 2-Precision testing parts; 3-Drawer assembly, 31-Inner slide, 32-Pull-out panel, 33-Panel, 34-Cable channel, 35-Drag chain; 4-Test piece, 41-Base, 42-Floating plate, 43-First adjusting rod, 44-Limiting post, 45-Fitting block, 46-Adapter block, 47-Pin block, 48-Second adjusting rod, 49-Probe. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0020] Throughout this specification, the terms "comprising," "having," etc., are used to specify the presence of the stated features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. Technical terms such as "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features.

[0021] like Figures 1 to 5As shown, a battery aging test device includes a frame 1, which has a cavity 11 enclosed by two side plates 12. A precision testing component 2 is disposed on the upper part of the cavity 11. Several pairs of outer rails 15 arranged vertically are disposed on the inner sides of the two side plates 12. Each pair of outer rails 15 is slidably connected to a drawer-type component 3 so that several drawer-type components 3 are housed in the cavity 11 and form a multi-layer structure with vertical spacing. The drawer-type component 3 includes an inner rail 31 slidably connected to the outer rails 15, a pull plate 32 connected to the inner rails 31, several test components 4 placed in front of the pull plate 32 and used for battery aging test, and a board 33 placed in the rear of the pull plate 32 and independently connected to the precision testing component 2. The several test components 4 are electrically connected to the board 33 respectively.

[0022] Through the above scheme, the aging test equipment in this embodiment is equipped with a dedicated frame 1 and has a receiving cavity 11. The receiving cavity 11 adopts an independent and layered drawer-type structure and is used to accommodate several drawer-type components 3. It can realize independent pull-out operation, and independently complete the picking, placing, testing and clamping operations of the battery to be tested, thereby completing the accuracy of multi-channel parallel or independent testing. It can meet the usage requirements of aging tests of different batches and different specifications of batteries at the same time. Furthermore, the precision detection component 2 improves data traceability, making it intelligent, safe and controllable.

[0023] In addition, in this embodiment, frame 1 serves as the main support for the whole machine test, providing a stable and independent testing environment for battery aging tests. The outer rails 15 are arranged in 16 pairs, meaning the drawer-type components 3 have 16 layers. This layered structure supports independent operation of each layer, such as pull-out operations, battery placement and removal, clamping, and testing. This significantly reduces the overall space occupied by the equipment, effectively improving space utilization and the density of battery batch testing. Each drawer-type component 3 is equipped with an independent dedicated test circuit, which is connected to the precision testing component 2. The circuits on each layer are independent and do not interfere with each other, ensuring the independence and data accuracy of multi-channel parallel testing from a structural perspective. The outer rails 15 and inner rails 31 are slidably connected and form a... The two-section slide rail structure ensures smooth sliding and reliable positioning, facilitating quick pulling and unloading of products under test by operators. The pull plate 32 serves as the support platform for the test piece 4, and the number of test pieces 4 on one pull plate 32 can be set according to actual production conditions, such as three in a single row or six in a double row. The board 33 connects each test piece 4 via a coaxial line. It is worth noting that, based on the drawer-type component 3's layered structure, it can achieve independent control and testing at each layer level. For example, it can perform start / stop, parameter configuration, and other operations on any layer independently. Therefore, in actual production, if different batches or different specifications of batteries are encountered, differentiated aging tests can be performed simultaneously, meeting more production and usage needs and improving the equipment's adaptability.

[0024] like Figures 1 to 3As shown, as an improved specific implementation, the frame 1 is also provided with a back plate 13 that is connected to the two side plates 12 and can be opened and closed. The side plate 12 includes an inner plate 121 and a plurality of crossbars 122 connected to the inner plate 121. The inner plate 121 is connected to the back plate 13, and the outer rail 15 is provided on the inner side of the crossbars 122.

[0025] Specifically, the back panel 13 is a double-opening door, the inner panel 121 is a solid panel, and there are 16 crossbars 122 arranged in an array, which can improve the ventilation effect of the equipment and improve the heat dissipation efficiency. The crossbars 122 are used to install the outer track 15 and are compatible with it. In addition, since the front of the frame 1 is open, it is convenient for the operation of the drawer-type component 3. The frame 1 is also equipped with a top plate and a bottom plate to ensure the structural sturdiness. The bottom plate is equipped with universal casters to facilitate the relocation of the equipment and ensure the stability of the internal parts during movement.

[0026] like Figure 2 As shown, in one specific embodiment of the improvement, the frame 1 is also provided with a partition 14 with a window and placed inside the back plate 13. The partition 14 is located at the connection between the inner plate 121 and the crossbar 122, and a containment area 16 is formed between the partition 14 and the back plate 13.

[0027] Specifically, the window is set along the height line of the frame 1, and the wiring of all circuits of the equipment is concentrated in the wiring area 16 on the back of the frame 1. The partition 14 can isolate the wiring from the drawer-type component 3, while the wiring is realized through the window. The back panel 13 can be opened to facilitate the later inspection of the wiring, circuit maintenance and fault diagnosis, greatly reducing the difficulty of equipment operation and maintenance and improving space utilization.

[0028] As one specific implementation of the improvement, the precision testing component 2 is a digital multimeter.

[0029] Specifically, the precision testing component 2 is a DMM34465A high-precision digital multimeter. The 34465A digital multimeter, with its excellent display, assists test engineers in observing measurement results at multiple levels, quickly obtaining effective information, and easily archiving measurement results. The Truevolt digital multimeter provides advanced graphical display functions such as trend charts and histograms, helping to obtain in-depth analysis more quickly. Furthermore, the 34465A digital multimeter offers three acquisition modes: continuous mode, data recording mode, and digital mode, meeting different testing needs. The equipment in this embodiment is mainly used for data acquisition and performance testing during charge-discharge aging tests. Relying on the precision testing component 2, it completes accurate testing. The direct acquisition scheme using the original meter enables high-precision, high-stability real-time acquisition of electrical parameters, ensuring the accuracy, consistency, and reliability of battery aging test data, ensuring data traceability, and reducing equipment testing energy consumption.

[0030] like Figure 4As shown, as an improved specific embodiment, the drawer-type component 3 also includes a wire groove 34 placed around the board 33 and a drag chain 35 placed inside the pull plate 32.

[0031] Specifically, based on the structure of setting several test pieces 4 and multi-layer drawer-type components 3 on each board 33, the wire groove 34 can neatly arrange various wire harnesses in the circuit, reducing signal crosstalk and wire harness wear caused by messy wiring; while the board 33 is connected to the main control board on the back of the equipment via the communication line in the drag chain 35. The two ends of the drag chain 35 are respectively set between the pull plate 32 and the partition 14, so that the drag chain 35 can be flexibly bent by following the drawer-type components 3, effectively protecting the connecting wires and avoiding damage, aging, scratches or entanglement of the wires due to long-term repeated pulling.

[0032] like Figure 4 and Figure 5 As shown, in one specific embodiment of the improvement, the test piece 4 includes a base 41, a floating plate 42 disposed above the base 41, and a first adjusting rod 43 passing through the floating plate 42 and connected to the base 41. An elastic element and a limiting post 44 are provided between the base 41 and the floating plate 42.

[0033] Specifically, the base 41 and the floating plate 42 are separate structures. The first adjusting rod 43 can be an adjusting screw, which screws the first adjusting rod 43 to the base 41, allowing the floating plate 42 to be adjusted up and down and limited. The elastic element is a spring. The top surface of the base 41 and the bottom surface of the floating plate 42 are provided with grooves that correspond vertically and are used to accommodate the elastic element. The limiting post 44 is detachably installed on the base 41 and faces upward. The floating plate 42 is provided with a through hole that matches the limiting post 44. The elastic element and the limiting post 44 are arranged adjacent to each other, and the number of each can be two. In actual application, the elastic element is first placed in the groove of the base 41, and the floating plate 42 is placed on the base 41. Above, the limiting post 44 passes through the floating plate 42, and the first adjusting rod 43 passes through the floating plate 42 and connects to the base 41. By rotating the first adjusting rod 43, the floating plate 42 is driven to make up-down displacement adjustment, and the spring force and screw rotation are controlled to adjust the stroke to avoid overpressure or jamming. The spring provides a stable upward pressing force, and together with the guide structure formed by the limiting post 44, they constrain the posture of the floating plate 42 to ensure that it completes the lifting action in a parallel and stable manner, preventing deviation, tilting and jamming. The three work together to achieve precise adjustment of the distance between the base 41 and the floating plate 42, improving the adaptability of the equipment test.

[0034] like Figure 5 As shown, as an improved specific embodiment, the test piece 4 also includes a pressure block 45 disposed on the rear side of the first adjusting rod 43.

[0035] Specifically, the wire clamping block 45 is installed on the upper rear side of the floating plate 42 by screws. The wire clamping block 45 can organize the connected wires and prevent the floating plate 42 from being pulled or squeezed, thus preventing the floating plate 42 from tilting and ensuring the service life of the elastic element.

[0036] like Figure 5 As shown, in one specific embodiment of the improvement, the test piece 4 also includes two adapter blocks 46 connected to the floating plate 42 and two needle blocks 47 connected to the adapter blocks 46, and a second adjusting rod 48 is provided between the adapter blocks 46 and the floating plate 42.

[0037] Specifically, the adapter block 46 is located on the front side of the first adjusting rod 43. There are two second adjusting rods 48, one for each adapter block 46. The second adjusting rod 48 is a combination of a height-equalizing screw and a spring, which enables adjustment between the adapter block 46 and the floating plate 42. After the floating plate 42 is adjusted to a suitable working height by the first adjusting rod 43, the second adjusting rod 48 is then finely adjusted left and right to adjust the installation position of the adapter block 46. The needle block 47 is located below the front end of the adapter block 46 and can be disassembled by screws, which enables the needle block 47 to be adjusted up and down and left and right, improving the adaptability of the test.

[0038] like Figure 5 As shown, in one specific embodiment of the improvement, the needle block 47 is provided with a downward-facing probe 49, and the distance between the two probes 49 is in the range of 8-40mm.

[0039] Specifically, the pin block 47 is used to install the probe 49. The probe 49 is connected to the wire harness of the pressure block 45. Based on the up-down adjustment of the floating plate 42 and the left-right adjustment of the pin block 47, the position of the probe 49 can be adjusted within the range of 8-40mm. For example, when adjusted to 8mm, the two adapter blocks 46 are parallel; when adjusted to 20mm or 40mm, the two adapter blocks 46 are in a figure-eight shape or the maximum figure-eight shape. This allows the probe 49 to be accurately aligned with the test points of different specifications of products. The probe 49 corresponds to the precise matching of the battery tabs and can be adapted to the testing of different models or specifications of batteries. During testing, the first adjusting rod 43 cooperates with the limiting post 44 to ensure the balance of the floating plate 42. Then, the second adjusting rod 48 is used to realize the pre-pressure action of the product under test, effectively compensating for height tolerance and buffering force, ensuring continuous, reliable and stable contact between the probe 49 and the test point, and ensuring the consistency of the test state.

[0040] Test process: First, the drawer of the drawer-type component 3 is pulled out and the product under test is placed in the designated position. Then, the test piece 4 for aging test is adjusted, the corresponding probe 49 is placed on the test point, and the drawer is pushed in to reset. Finally, the test is started. Each layer is connected to the corresponding board 33 through a concentric line, and each layer is then connected to the main control board on the back of the frame 1. Charge and discharge aging test is performed on the product under test. It should be noted that the drawer-type components 3 of different layers can be tested separately, so that products under test of different specifications can be tested simultaneously. Only the above operations are required and the equipment is then debugged. The equipment of this application can be applied to the research and development verification, factory quality inspection, life calibration and reliability assessment of various electrochemical energy storage batteries and battery components.

[0041] Finally, it should be noted that the above description is only an implementation method of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A battery aging test device, characterized in that, The system includes a frame (1) having a cavity (11) enclosed by two side plates (12). A precision testing component (2) is provided on the upper part of the cavity (11). Several pairs of outer rails (15) are arranged in a vertical layer on the inner side of the two side plates (12). Each pair of outer rails (15) is slidably connected to a drawer-type component (3) so that several drawer-type components (3) are housed in the cavity (11) and form a multi-layer structure with vertical spacing. The drawer-type component (3) includes an inner rail (31) slidably connected to the outer rails (15), a pull plate (32) connected to the inner rails (31), several test pieces (4) placed in front of the pull plate (32) and used for battery aging testing, and a board (33) placed in the rear of the pull plate (32) and independently connected to the precision testing component (2). The several test pieces (4) are electrically connected to the board (33) respectively.

2. The battery aging test equipment according to claim 1, characterized in that, The frame (1) is also provided with a back plate (13) that is connected to the two side plates (12) and can be opened and closed. The side plate (12) includes an inner plate (121) and a plurality of crossbars (122) connected to the inner plate (121). The inner plate (121) is connected to the back plate (13). The outer track (15) is provided on the inner side of the crossbars (122).

3. The battery aging test equipment according to claim 2, characterized in that, The frame (1) is also provided with a partition (14) with a window and placed inside the back plate (13). The partition (14) is located at the connection between the inner plate (121) and the crossbar (122). A containment area (16) is formed between the partition (14) and the back plate (13).

4. The battery aging test equipment according to claim 1, characterized in that, The precision testing component (2) is a digital multimeter.

5. The battery aging test equipment according to claim 1, characterized in that, The drawer-type assembly (3) also includes a wire groove (34) located around the board (33) and a drag chain (35) located inside the pull plate (32).

6. The battery aging test equipment according to claim 1, characterized in that, The test piece (4) includes a base (41), a floating plate (42) disposed above the base (41), and a first adjusting rod (43) passing through the floating plate (42) and connected to the base (41). An elastic element and a limiting post (44) are provided between the base (41) and the floating plate (42).

7. The battery aging test equipment according to claim 6, characterized in that, The test piece (4) also includes a pressure block (45) disposed on the rear side of the first adjusting rod (43).

8. The battery aging test equipment according to claim 7, characterized in that, The test piece (4) also includes two adapter blocks (46) connected to the floating plate (42) and two needle blocks (47) connected to the adapter blocks (46). A second adjusting rod (48) is provided between the adapter blocks (46) and the floating plate (42).

9. The battery aging test equipment according to claim 8, characterized in that, The needle block (47) is provided with downward-facing probes (49), and the distance between the two probes (49) is 8-40 mm.

Images