Battery testing equipment

Abstract

The utility model discloses a battery test device, which solves the problems of poor battery test compatibility, low power supply conversion efficiency and insufficient voltage stability in the prior art through an integrated rack, a tray, a detection assembly and a power supply assembly. Particularly, by means of the scheme of high-voltage direct-current conversion and the DCDC module, the accuracy and efficiency of charging and discharging testing are improved, the equipment structure is simplified, the maintenance difficulty and the operation cost are reduced, meanwhile, the safety in the testing process is enhanced, the testing requirements of various battery types are met, and the testing efficiency is improved. And obvious technical progress and practical value are shown.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing equipment, in particular to a battery testing device. Background Art

[0002] In the rapidly growing new energy vehicle market, blade batteries, as key energy storage components, have become increasingly important for performance testing and quality assurance. While existing blade battery capacity grading equipment has met production needs to a certain extent, it still faces some challenges, such as insufficient compatibility with batteries of varying specifications, heat generated during capacity testing that raises ambient temperatures and affects test accuracy, and low energy conversion efficiency. These issues not only limit production efficiency but also increase energy consumption and costs. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a battery testing device with high energy utilization, high operating efficiency, and low production and maintenance costs.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A battery testing device comprising:

[0006] A rack, a tray and a detection assembly arranged on the rack, wherein the tray is used to place batteries to be tested;

[0007] A power supply assembly, comprising: a power module, a power conversion system, and a DCDC conversion module, wherein the power conversion system is used to convert the electric energy output by the power module into high-voltage direct current;

[0008] The DCDC conversion module is connected to the power conversion system and is used to convert the high-voltage direct current into a stable direct current voltage suitable for the detection component to perform charge and discharge tests on the battery.

[0009] Furthermore, it also includes a power cabinet, in which a power module and a power conversion system are arranged;

[0010] The power cabinet is equipped with a PLC control system, which is used to coordinate the work of the power module and the power conversion system so that they can cooperate to output high-voltage direct current to the DCDC conversion module.

[0011] Furthermore, the detection component includes:

[0012] Probe modules located on both sides of the tray, the probe modules being electrically connected to the power conversion module;

[0013] The driving member is in driving connection with the probe module and is used to drive the probe module to move close to or away from the tray to perform charge and discharge tests on the battery.

[0014] Furthermore, the probe module includes: a probe and a probe mounting frame, the probe mounting frame is provided with a first sliding member, the frame is provided with a second sliding member that cooperates with the first sliding member, and the probe mounting frame is slidably connected to the frame for adjusting the position of the probe;

[0015] The driving component is a motor, and a driving wheel is provided at the output end of the motor. A screw is provided on the probe mounting frame, and a driven wheel is provided at one end of the screw. The driving wheel is connected to the driven wheel through transmission. The motor drives the probe mounting frame to move on the frame, thereby realizing contact or separation between the probe and the battery, so as to facilitate charge and discharge testing of the battery.

[0016] Furthermore, a synchronization shaft is provided between the probe modules on both sides of the tray, and the synchronization shaft is used to link the probe modules located on both sides of the tray so that the probe modules can approach or move away from the tray synchronously, thereby ensuring that the probes and the batteries on the tray maintain consistent contact pressure during the test process, thereby achieving stable testing of the batteries.

[0017] Furthermore, the probe mounting frame includes a mounting plate and a base, and the probe is fixed on the mounting plate;

[0018] A first sliding member is provided below the base, and the probe mounting plate is connected to the base via an adjusting rod;

[0019] By adjusting the height of the adjusting rod, the height of the probe relative to the base can be adjusted to accommodate testing of batteries of different sizes.

[0020] Further, it also includes a cabinet and a cooling system;

[0021] The cabinet is arranged inside the cabinet;

[0022] The cooling system includes: a first blowing assembly, blowing air laterally toward the battery; a second blowing assembly, blowing air upward from the bottom of the battery;

[0023] An air outlet channel is provided on the top of the cabinet, the channel corresponds to the second blowing assembly and extends along both sides of the cabinet;

[0024] The cooling device is used to cool the hot air discharged from the air outlet channel and introduce the cooled air into the cabinet to maintain a stable operating temperature of the equipment.

[0025] Furthermore, inside the cabinet, a windshield is provided above the two probe modules, and an air outlet channel is formed between the windshield and the cabinet;

[0026] The cooling device includes: a cooling chamber, an air inlet fan, an air exhaust fan and a heat exchanger;

[0027] The air inlet fan is arranged at the upper part of the cooling chamber and is connected to the end of the air outlet channel;

[0028] The heat exchanger is placed obliquely in the cooling chamber for heat exchange;

[0029] The exhaust fan is located at the bottom of the cooling chamber and is used to discharge the air cooled by the heat exchanger into the interior of the cabinet.

[0030] Furthermore, a mounting frame is provided on the top of the rack, between the air outlet channel and the battery;

[0031] The DCDC module can be installed in the installation frame in a drawable manner.

[0032] Furthermore, a liquid receiving pan is provided below the heat exchanger.

[0033] The beneficial effects of the utility model are:

[0034] This utility model addresses the existing battery testing issues of poor compatibility, low power conversion efficiency, and insufficient voltage stability, through an integrated rack, tray, detection components, and power supply assembly. In particular, the utilization of high-voltage DC conversion and a DC-DC module not only improves the accuracy and efficiency of charge and discharge testing, but also simplifies the equipment structure, reduces maintenance and operating costs, and enhances safety during testing. The device is suitable for testing a variety of battery types, demonstrating significant technological advancement and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the battery testing equipment of the utility model;

[0037] Figure 2 This is a schematic diagram of the internal structure of the battery testing equipment of the utility model;

[0038] Figure 3 It is a three-dimensional schematic diagram of a partial structure of the battery testing device of the utility model;

[0039] Figure 4 It is a schematic diagram of the internal structure of a battery testing device of the utility model;

[0040] Figure 5 It is a structural diagram of the bottom frame of a partial structure of the battery testing equipment of the present invention.

[0041] in,

[0042] 100. Cabinet;

[0043] 200, rack;

[0044] 210, tray;

[0045] 220, detection assembly; 221, probe module; 2211, probe; 2212, probe mounting bracket; 2212a, mounting plate; 2212b, base; 2212c, adjustment rod; 2213, first sliding member; 2214, second sliding member; 2215, lead screw;

[0046] 230, driving member;

[0047] 240, Synchronous shaft;

[0048] 250, mounting frame; 251, DCDC conversion module;

[0049] 300, cooling system; 310, first blowing assembly; 320, second blowing assembly; 330, air outlet channel; 340, wind shield; 350, cooling device; 351, cooling chamber; 352, air inlet fan; 353, exhaust fan; 354, heat exchanger; 360, liquid collection tray;

[0050] 400. Power supply cabinet. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0052] The utility model provides a device and a method for battery testing. The device can effectively perform charge and discharge tests on a battery to be tested, while providing accurate detection and a reliable operating environment.

[0053] Reference Figure 1 A battery testing device includes a rack 200, a tray 210, a detection component 220, a power supply component, a power supply cabinet 400, a cooling system 300 and a control system.

[0054] Reference Figure 2 The tray 210 and the detection component 220 are arranged on the frame 200. The tray 210 is used to place the battery to be tested. The battery here refers to the energy storage battery. This case is explained by taking the blade battery as an example.

[0055] The power supply assembly includes: a power module, a power conversion system and a DCDC conversion module 251. The power conversion system is used to convert the electric energy output by the power module into high-voltage direct current; the DCDC conversion module 251 is connected to the power conversion system and is used to convert the high-voltage direct current into a stable direct current voltage suitable for the detection assembly 220 to perform charge and discharge tests on the battery.

[0056] Among them, the power conversion system is PCS (Power Conversion System), which is a system for converting one form of electrical energy into another form of electrical energy. In this patent, the main function of PCS is to convert alternating current (AC) into high-voltage direct current (HVDC), providing a stable high-voltage DC power supply for the charging and discharging of blade batteries. Through PCS conversion, the equipment can provide electrical energy to the DCDC conversion module 251 in the form of high-voltage DC, which is beneficial to improving the efficiency and safety of charging and discharging; DCDC conversion module 251 (DC to DC Converter), DCDC conversion module 251 is an electronic device that converts one DC voltage value into another DC voltage value. In this patent, DCDC conversion module 251 is used to convert high-voltage DC into a voltage value suitable for capacity detection of blade batteries.

[0057] Compared to traditional battery testing equipment, the present invention utilizes a PCS to provide high-voltage DC power in conjunction with a DC-DC converter module 251 for battery capacity testing. This reduces energy loss during current transmission, improves energy utilization efficiency, and thus enhances device performance stability. This significantly improves charge and discharge efficiency during testing, thereby increasing the device's operational efficiency and stability, reducing production and maintenance costs, minimizing production failure rates, and improving production efficiency.

[0058] In some embodiments, reference Figure 2-4 A tray 210 support frame is provided at the bottom of the rack 200 for supporting and positioning the tray 210. It also includes positioning pins arranged in a rectangular shape and micro switches and guide plates on both sides. The positioning pins work in conjunction with the micro switches to position and detect whether the tray 210 is in place. The guide plates are used to guide the tray 210 when it is placed to prevent the tray 210 from being offset.

[0059] In some embodiments, a power supply cabinet 400 is provided with a power module and a power conversion system. A PLC control system is also provided within the power supply cabinet 400. The PLC control system coordinates the operation of the power module and the power conversion system, enabling them to coordinately output high-voltage direct current to the DC-DC conversion module 251. The PLC control system controls the driver 230 to rotate the synchronization shaft 240, thereby controlling the movement of the probe module 221, causing the probe 2211 to press-fit against the positive and negative terminals of the battery to complete battery charging and discharging. The use of the PLC control system improves the efficiency and safety of the entire power supply assembly.

[0060] In some embodiments, reference Figure 2-4 The detection component 220 includes: probe modules 221 located on both sides of the tray 210, and the probe modules 221 are electrically connected to the power conversion module; a driving member 230, and the driving member 230 is transmission-connected to the probe module 221, and is used to drive the probe module 221 to move close to or away from the tray 210 to perform charge and discharge tests on the battery.

[0061] Further, refer to Figure 2-3 The probe module 221 includes: a probe 2211 and a probe mounting frame 2212, the probe mounting frame 2212 is provided with a first sliding member 2213, the frame 200 is provided with a second sliding member 2214 cooperating with the first sliding member 2213, the probe mounting frame 2212 is slidably connected to the frame 200, and is used to adjust the position of the probe 2211; the driving member 230 is a motor, the output end of the motor is provided with a driving wheel, the probe mounting frame 2212 is provided with a screw 2215, one end of the screw 2215 is provided with a driven wheel, the driving wheel is connected to the driven wheel, and the motor drives the probe mounting frame 2212 to move on the frame 200, thereby realizing the contact or separation of the probe 2211 and the battery, so as to facilitate the charge and discharge test of the battery. Preferably, the screw is a ball screw 2215. Specifically, the first sliding member 2213 is a slide seat, and the second sliding member 2214 is a slide rail. That is, the probe mounting frame 2212 is connected to the frame 200 through the sliding connection between the slide rail and the slide seat. The motor here is preferably a servo motor, which drives the probe modules 221 located on both sides of the battery to make linear reciprocating movements, thereby achieving contact or separation between the probe 2211 and the battery. This is compatible with blade batteries of various lengths and can perform charge and discharge tests on blade batteries of different models and lengths, with good compatibility. Preferably, the driving wheel and the driven wheel are connected by a synchronous belt drive.

[0062] Furthermore, the motor is welded to the bottom of the frame 200, and the servo motor is also connected to a reducer. The servo motor and the reducer cooperate to achieve the purpose of reducing the speed and increasing the torque, thereby providing a stronger driving force.

[0063] In some embodiments, reference Figure 3 The probe mounting frame 2212 includes a mounting plate 2212a and a base 2212b. The probe 2211 is fixed to the mounting plate 2212a. A first sliding member 2213 is provided below the base 2212b. The probe mounting plate 2212a and the base 2212b are connected by an adjustment rod 2212c. By adjusting the height of the adjustment rod 2212c, the height of the probe 2211 relative to the base 2212b can be adjusted to accommodate testing of batteries of different sizes, further improving the compatibility of the device.

[0064] Further, refer to Figure 5 A synchronization shaft is provided between the probe modules 221 on both sides of the tray 210, and the synchronization shaft is set at the bottom of the frame 200. The synchronization shaft is used to link the probe modules 221 on both sides of the tray 210, so that the probe modules 221 can be synchronously approached or moved away from the tray 210. The driving force of the servo motor can keep the probe modules 2211 on both sides moving synchronously through the synchronization shaft, thereby ensuring that the probes 2211 and the batteries on the tray 210 maintain consistent contact pressure during the test process, thereby achieving stable testing of the batteries.

[0065] During the test, a large amount of heat is generated, which is used by the cooling system 300 to maintain a stable operating temperature of the device.

[0066] In some embodiments, reference Figure 2 , including a cabinet 100 and a cooling system 300; the rack 200 is arranged inside the cabinet 100; the cooling system 300 includes: a first blowing component 310, which blows air horizontally toward the battery; a second blowing component 320, which blows air upward from the bottom of the battery; an air outlet duct 330 is provided on the top of the cabinet 100, which corresponds to the second blowing component 320 and extends along both sides of the cabinet 100; a cooling device 350, which is used to cool the hot air discharged from the air outlet duct 330 and introduce the cooled air into the interior of the cabinet 100 to maintain a stable operating temperature of the equipment. It can be understood that by setting up the cabinet 100, a small relatively enclosed space is formed inside the cabinet 100, and the temperature of the interior space of the cabinet 100 only needs to be maintained by the cooling system 300, thereby improving the cooling effect and reducing resource waste. Furthermore, inside cabinet 100, the first and second blowing assemblies 310 and 320 cooperate to ensure that the airflow passing through the batteries exchanges heat with the batteries before being discharged through top air outlet duct 330. The cooling device 350 cools the hot air discharged from air outlet duct 330 and introduces the cooled air into cabinet 100, creating a continuously circulating cooling airflow within cabinet 100. This further ensures that the equipment maintains a stable operating temperature during charging and discharging, thereby improving the overall operating efficiency and reliability of the equipment.

[0067] Further, inside the cabinet 100, refer to Figure 2-3 A windshield 340 is located above the two probe modules 221, forming an air outlet duct 330 between the windshield 340 and the cabinet 100. The cooling device 350 includes a cooling chamber 351, an air inlet fan 352, an exhaust fan 353, and a heat exchanger 354. The air inlet fan 352 is located at the top of the cooling chamber 351 and communicates with the end of the air outlet duct 330. It can be understood that the air inlet fan 352 is located inside the air outlet duct 330, and the exhaust fan 353 is located outside the air outlet duct 330. In other words, the windshield 340 separates the air inlet fan 352 and the exhaust fan 353, thereby constructing a good air circulation path. The heat exchanger 354 is tilted in the cooling chamber 351 for heat exchange. The exhaust fan 353 is located at the bottom of the cooling chamber 351 to discharge the air cooled by the heat exchanger 354 into the interior of the cabinet 100. The air inlet fan 352 delivers hot air into the cooling chamber 351 , and the hot air is converted into cold air through heat exchange with the heat exchanger 354 , and is finally discharged into the air cooling circulation system through the exhaust fan 353 .

[0068] Specifically, refer to Figure 2 The heat exchanger 354 is a water-cooled radiator having a heat sink, a water inlet, and a water outlet. Cooling water flows into the heat exchanger 354 through the water inlet, exchanges heat with the heat sink, lowering the temperature of the heat sink, and then the heat-exchanged water is discharged through the water outlet. Hot air enters the heat exchanger 354, contacts the heat sink, and is converted into cold air through heat exchange. Preferably, the heat exchanger 354 is arranged at an angle within the cooling chamber 351, so that the contact area of the heat sink can be increased, thereby improving the heat exchange efficiency.

[0069] Furthermore, a liquid receiving pan 360 is provided below the heat exchanger 354 for receiving cooling water generated during the water cooling process or leakage caused by a fault.

[0070] In some embodiments, reference Figure 2-3 A mounting frame 250 is located on top of the rack 200, between the air outlet duct 330 and the batteries. The DC-DC module can be installed within this mounting frame 250 by pulling it out. The DC-DC module is positioned along the airflow path of the cooling system 300, allowing for continuous cooling and dissipation of the cooling air before it enters the air outlet duct 330. This pull-out installation method reduces manual labor and facilitates installation and maintenance.

[0071] Specifically, the DCDC module connects to the high-voltage DC bus and charges and discharges the blade battery with the help of the probe module 221, ensuring low current transmission losses. The DCDC module is equipped with a fan to help dissipate heat. In addition, the DCDC module is directly installed inside the device and connected to the positive and negative probe modules 221, thereby shortening the cable length and improving the consistency and reliability of the battery.

[0072] Furthermore, a cable busbar is located within the mounting frame 250, securing and connecting the current cables between the probe module 221 and the DC / DC module. The mounting frame 250 is also equipped with a fire alarm system, which includes smoke and CO sensors. These sensors monitor the internal environment of the equipment in real time, detect potential fire risks, and trigger alarm signals based on the monitoring results, prompting personnel to take timely protective measures or automatically initiate firefighting measures.

[0073] A battery testing method facilitates the battery testing device described above to test the battery. It includes:

[0074] a. Place the battery on the test tray and ensure that the test tray is placed correctly;

[0075] b. Issue a start command through the PLC system to synchronously start the water cooling device, servo motor and other components;

[0076] c. Use the driving force generated by the servo motor and reducer to fully press the probe module and battery electrode through the synchronous belt, synchronous pulley and drive shaft;

[0077] d. Control the DCDC module through the PLC system to perform battery charging and discharging tests;

[0078] e. A cooling cycle is formed by the air inlet and outlet fans to maintain a stable temperature during the battery test;

[0079] f. After the test is completed, the device automatically stops working and resets, and the battery is removed from the device through system feedback signals.

[0080] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A battery testing device, characterized in that: include: A rack, a tray and a detection assembly arranged on the rack, wherein the tray is used to place batteries to be tested; A power supply assembly, comprising: a power module, a power conversion system, and a DCDC conversion module, wherein the power conversion system is used to convert the electric energy output by the power module into high-voltage direct current; The DCDC conversion module is connected to the power conversion system and is used to convert the high-voltage direct current into a stable direct current voltage suitable for the detection component to perform charge and discharge tests on the battery.

2. The battery testing device according to claim 1, wherein: It also includes a power cabinet, in which a power module and a power conversion system are arranged; The power cabinet is equipped with a PLC control system, which is used to coordinate the work of the power module and the power conversion system so that they can cooperate to output high-voltage direct current to the DCDC conversion module.

3. The battery testing device according to claim 1, wherein: The detection component includes: Probe modules located on both sides of the tray, the probe modules being electrically connected to the power conversion module; The driving member is in driving connection with the probe module and is used to drive the probe module to move close to or away from the tray to perform charge and discharge tests on the battery.

4. The battery testing device according to claim 3, characterized in that: The probe module includes: a probe and a probe mounting frame, the probe mounting frame is provided with a first sliding member, the frame is provided with a second sliding member that cooperates with the first sliding member, and the probe mounting frame is slidably connected to the frame for adjusting the position of the probe; The driving component is a motor, and a driving wheel is provided at the output end of the motor. A screw is provided on the probe mounting frame, and a driven wheel is provided at one end of the screw. The driving wheel is connected to the driven wheel through transmission. The motor drives the probe mounting frame to move on the frame, thereby realizing contact or separation between the probe and the battery, so as to facilitate charge and discharge testing of the battery.

5. The battery testing device according to claim 4, characterized in that: A synchronization shaft is provided between the probe modules on both sides of the tray, and the synchronization shaft is used to link the probe modules located on both sides of the tray so that the probe modules can approach or move away from the tray synchronously, thereby ensuring that the probes and the batteries on the tray maintain consistent contact pressure during the test process, thereby achieving stable testing of the batteries.

6. The battery testing device according to claim 4, characterized in that: The probe mounting frame includes a mounting plate and a base, and the probe is fixed on the mounting plate; A first sliding member is provided below the base, and the probe mounting plate is connected to the base via an adjusting rod; By adjusting the height of the adjusting rod, the height of the probe relative to the base can be adjusted to accommodate testing of batteries of different sizes.

7. The battery testing device according to claim 1, wherein: Also includes cabinets and cooling systems; The cabinet is arranged inside the cabinet; The cooling system includes: a first blowing assembly, blowing air laterally toward the battery; a second blowing assembly, blowing air upward from the bottom of the battery; An air outlet channel is provided on the top of the cabinet, the channel corresponds to the second blowing assembly and extends along both sides of the cabinet; The cooling device is used to cool the hot air discharged from the air outlet channel and introduce the cooled air into the cabinet to maintain a stable operating temperature of the equipment.

8. The battery testing device according to claim 7, characterized in that: Inside the cabinet, a windshield is provided above the two probe modules, and an air outlet channel is formed between the windshield and the cabinet; The cooling device includes: a cooling chamber, an air inlet fan, an air exhaust fan and a heat exchanger; The air inlet fan is arranged at the upper part of the cooling chamber and is connected to the end of the air outlet channel; The heat exchanger is placed obliquely in the cooling chamber for heat exchange; The exhaust fan is located at the bottom of the cooling chamber and is used to discharge the air cooled by the heat exchanger into the interior of the cabinet.

9. The battery testing device according to claim 7, wherein: A mounting frame is provided on the top of the rack, between the air outlet channel and the battery; The DCDC module can be installed in the installation frame in a drawable manner.

10. The battery testing device according to claim 8, wherein: A liquid receiving pan is provided below the heat exchanger.

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