Battery testing device and method

Abstract

A battery testing device and method. By means of a rack (200), a tray (210), a detection assembly (220) and a power assembly, which are integrated together, the problems in the prior art of a battery test having a poor compatibility, power conversion efficiency being low and voltage stability being insufficient are solved. In particular, the solution in which high-voltage direct-current conversion is performed and a DC-DC module is used not only improves the accuracy and efficiency of a charging / discharging test, but also simplifies the device structure, reduces the maintenance difficulty and operation costs, and enhances safety during the test, and the solution is applicable to the test requirements of various battery types.

Description

Battery testing device and method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing equipment, in particular to a battery testing device and method thereof. BACKGROUND

[0002] In the rapidly growing new energy vehicle market, as a key energy storage component, the performance testing and quality assurance of blade batteries become particularly important. Although the existing blade battery capacity distribution equipment meets the production requirements to some extent, there are still some problems, such as insufficient compatibility for different specifications of batteries, heat generated during capacity detection affecting test accuracy due to rising ambient temperature, and low energy conversion efficiency. These problems not only limit production efficiency, but also increase energy consumption and cost. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the present application provides a battery testing device and method thereof with high energy utilization rate, high operation efficiency, low production cost and low maintenance cost.

[0004] The technical scheme adopted by the present application 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, the tray being used for placing a battery to be tested;

[0007] a power supply assembly, the power supply assembly comprising a power supply module, a power supply conversion system and a DCDC conversion module, the power supply conversion system being used for converting electric energy output by the power supply module into high-voltage direct current;

[0008] the DCDC conversion module is connected with the power supply conversion system, and is used for converting the high-voltage direct current into stable direct current voltage suitable for the detection assembly, so as to perform charge and discharge testing on the battery.

[0009] Further, a power supply cabinet is further included, and the power supply cabinet is provided with the power supply module and the power supply conversion system;

[0010] The power supply cabinet is provided with a PLC control system, and the PLC control system is used for coordinating the work of the power supply module and the power supply conversion system, so that the high-voltage direct current can be output to the DCDC conversion module in cooperation.

[0011] Further, the detection assembly comprises:

[0012] probe modules located on both sides of the tray, the probe modules being electrically connected with the electric energy conversion module;

[0013] A driving member is in transmission connection with the probe module, and is used to drive the probe module to move between the positions close to or away from the tray, so as to test the battery.

[0014] Further, the probe module comprises a probe and a probe mounting rack, the first sliding member is arranged on the probe mounting rack, the second sliding member is arranged on the rack and matched with the first sliding member, and the probe mounting rack is in sliding connection with the rack, so as to adjust the position of the probe.

[0015] The driving member is a motor, the output end of the motor is provided with a driving wheel, the rack screw is arranged on the probe mounting rack, one end of the rack screw is provided with a driven wheel, the driving wheel is in transmission connection with the driven wheel, the motor drives the probe mounting rack to move on the rack, so that the probe is contacted or separated from the battery, and the battery is tested by charging and discharging.

[0016] Further, the synchronous shaft is arranged between the probe modules on the two sides of the tray, the synchronous shaft is used to drive the probe modules on the two sides of the tray to move synchronously, so that the probe modules can synchronously move close to or away from the tray, and the consistent contact pressure between the probe and the battery on the tray during the test is ensured, and the stable test of the battery is realized.

[0017] Further, the probe mounting rack comprises a mounting plate and a base, and the probe is fixed on the mounting plate.

[0018] The first sliding member is arranged below the base, and the probe mounting plate is connected with the base through the adjusting rod.

[0019] The height of the adjusting rod is adjusted to adjust the height of the probe relative to the base, so as to adapt to the test of the battery with different sizes.

[0020] Further, the cabinet and the cooling system are further included.

[0021] The cabinet is arranged in the cabinet.

[0022] The cooling system comprises a first blowing assembly for blowing horizontally towards the battery, and a second blowing assembly for blowing upwards from the bottom of the battery.

[0023] The cabinet is provided with an air outlet channel corresponding to the second blowing assembly and extending along the two 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 the stable operation temperature of the equipment.

[0025] Further, the air baffle is arranged above the two probe modules in the cabinet, and the air baffle forms the air outlet channel with the cabinet.

[0026] The cooling device comprises a cooling cavity, an air inlet fan, an air outlet fan and a heat exchanger.

[0027] The air inlet fan is arranged at the upper part of the cooling cavity and communicates with the end of the air outlet channel.

[0028] The heat exchanger is arranged in the cooling cavity in an inclined manner and is used for heat exchange.

[0029] The air outlet fan is arranged at the lower part of the cooling cavity and is used for discharging the air cooled by the heat exchanger into the cabinet.

[0030] Further, the mounting frame is arranged between the air outlet channel and the battery at the top of the rack.

[0031] The DCDC module is mounted in the mounting frame in a drawable manner.

[0032] A battery testing method is provided, which utilizes the above battery testing device to test the battery.

[0033] The battery testing device has the following advantages:

[0034] The battery testing device integrates the rack, the tray, the detection assembly and the power supply assembly, solves the problems of poor compatibility, low power conversion efficiency and insufficient voltage stability in the prior art, and has the following advantages: the high-voltage direct-current conversion and the DCDC module are used, the accuracy and efficiency of the charging and discharging test are improved, the device structure is simplified, the maintenance difficulty and operation cost are reduced, the safety during the test is enhanced, the device is suitable for the test of various types of batteries, and significant technical progress and practical value are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0035] The application will be further described below in combination with the drawings and examples.

[0036] Fig. 1 is a schematic structural diagram of the battery testing device according to the present application;

[0037] Fig. 2 is a schematic diagram of the internal structure of the battery testing device according to the present application;

[0038] Fig. 3 is a schematic diagram of the partial structure of the battery testing device according to the present application;

[0039] Fig. 4 is a schematic diagram of the internal structure of the partial structure of the battery testing device according to the present application;

[0040] Fig. 5 is a schematic diagram of the bottom frame of the partial structure of the battery testing device according to the present application.

[0041] In the drawings,

[0042] 100, cabinet;

[0043] 200, rack;

[0044] 210 tray;

[0045] 220 detection assembly; 221 probe module; 2211 probe; 2212 probe mounting rack; 2212a mounting plate; 2212b base; 2212c adjusting rod; 2213 first sliding piece; 2214 second sliding piece; 2215 lead screw;

[0046] 230 driving member;

[0047] 240 synchronization 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 cavity; 352 air inlet fan; 353 air outlet fan; 354 heat exchanger; 360 liquid receiving tray;

[0050] 400 power supply cabinet. DETAILED DESCRIPTION

[0051] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. In addition, all the coupling / connection relationships involved in the patent do not mean that the components are directly connected, but means that a better coupling structure can be formed by adding or reducing coupling accessories according to the specific implementation situation. The technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0052] The present application provides a device and method for battery testing, which can effectively perform charge-discharge test on the battery to be tested, while providing accurate detection and reliable operating environment.

[0053] Referring to FIG. 1, a battery testing device includes a rack 200, a tray 210, a detection assembly 220, a power supply assembly, a power supply cabinet 400, a cooling system 300 and a control system.

[0054] Referring to FIG. 2, the tray 210 and the detection assembly 220 are arranged on the rack 200, and the tray 210 is used to place the battery to be tested, where the battery refers to an energy storage battery, and the present case is illustrated by taking a blade battery as an example.

[0055] The power supply assembly comprises a power module, a power conversion system and a DCDC conversion module 251, the power conversion system is used for converting the electric energy output by the power module into high-voltage direct current, the DCDC conversion module 251 is connected with the power conversion system and is used for converting the high-voltage direct current into stable direct current voltage suitable for the detection assembly 220, and the battery is subjected to charge and discharge test.

[0056] The power conversion system is a PCS (Power Conversion System), which is a system for converting electric energy in one form into electric energy in another form. In the present patent, the main function of the PCS is to convert alternating current (AC) into high-voltage direct current (HVDC) to provide stable high-voltage direct current power for the charge and discharge of the blade battery. Through the conversion of the PCS, the equipment can provide electric energy in the form of high-voltage direct current to the DCDC conversion module 251, which is beneficial to improve the efficiency and safety of the charge and discharge; the DCDC conversion module 251 (DC to DC Converter) is an electronic device for converting one direct current voltage value into another direct current voltage value. In the present patent, the DCDC conversion module 251 is used for converting high-voltage direct current into a voltage value suitable for capacity detection of the blade battery.

[0057] Compared with the traditional battery test equipment, the equipment of the present patent can reduce energy loss in the current transmission process, improve energy utilization efficiency, and thus enhance the performance stability of the equipment by using the PCS to provide high-voltage direct current in cooperation with the DCDC conversion module 251 for battery capacity detection. This significantly improves the charge and discharge efficiency during the detection process, thereby improving the operation efficiency and stability of the equipment, reducing the production and maintenance costs, reducing the failure rate during the production process, and improving the production efficiency.

[0058] In some embodiments, referring to FIGS. 2-4, a tray 210 support frame is arranged at the bottom of the rack 200 to support and position the tray 210, and further comprises positioning pins arranged in a rectangular manner, microswitches and guide plates arranged on both sides, the positioning pins work in cooperation with the microswitches to position and detect the tray 210 to be in place, and the guide plates are used to guide the tray 210 when it is placed to prevent the tray 210 from being placed off-center.

[0059] In some embodiments, the power supply cabinet 400 is provided with a power supply module and a power conversion system; the power supply cabinet 400 is provided with a PLC control system, which is used to coordinate the work of the power supply module and the power conversion system, so that it can cooperate to output high-voltage direct-current to the DCDC conversion module 251. The PLC control system is used to control the driving member 230 to drive the synchronous shaft 240 to rotate, thereby controlling the movement of the probe module 221, so that the probe 2211 is pressed with the positive and negative poles of the battery to complete the charging and discharging of the battery. The application of the PLC control system improves the working efficiency and safety of the entire power supply assembly.

[0060] In some embodiments, referring to FIGS. 2-4, the detection assembly 220 includes: a probe module 221 located on both sides of the tray 210, which is electrically connected with the electric energy conversion module; a driving member 230, which is in transmission connection with the probe module 221, is used to drive the probe module 221 to move between close to or away from the tray 210, so as to test the charging and discharging of the battery.

[0061] Further, referring to FIGS. 2-3, the probe module 221 includes: a probe 2211 and a probe mounting rack 2212, the probe mounting rack 2212 is provided with a first sliding member 2213, the rack 200 is provided with a second sliding member 2214 matched with the first sliding member 2213, the probe mounting rack 2212 is in sliding connection with the rack 200, which 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 rack 2212 is provided with a lead screw 2215, one end of the lead screw 2215 is provided with a driven wheel, the driving wheel and the driven wheel are in transmission connection, the motor drives the probe mounting rack 2212 to move on the rack 200, thereby realizing the contact or separation of the probe 2211 and the battery, so as to test the charging and discharging of the battery, preferably, the lead screw is a ball screw 2215. Specifically, the first sliding member 2213 is a sliding seat, and the second sliding member 2214 is a sliding rail, that is, the probe mounting rack 2212 and the rack 200 are in sliding connection through the cooperation of the sliding rail and the sliding seat. The motor here is preferably a servo motor, which drives the probe module 221 located on both sides of the battery to move linearly, thereby realizing the contact or separation of the probe 2211 and the battery, which can be compatible with blade batteries of various lengths, and can test the charging and discharging of blade batteries of different models and lengths, with good compatibility. Preferably, the driving wheel and the driven wheel are in transmission connection through a synchronous belt.

[0062] Further, the motor is welded at the bottom of the rack 200, and the servo motor is also connected with a speed reducer, which cooperates with the servo motor to realize the purpose of reducing the speed and increasing the torque, and provides stronger driving force.

[0063] In some embodiments, referring to FIG. 3, the probe mounting rack 2212 includes a mounting plate 2212a and a base 2212b, the probes 2211 are fixed on the mounting plate 2212a; the lower part of the base 2212b is provided with a first sliding member 2213, and the probe mounting plate 2212a and the base 2212b are connected through an adjusting rod 2212c; by adjusting the height of the adjusting rod 2212c, the height of the probe 2211 relative to the base 2212b is adjusted to adapt to different sizes of batteries for testing. To further improve the compatibility of the equipment.

[0064] Further, referring to FIG. 5, a synchronization shaft is arranged between the probe modules 221 on both sides of the tray 210, the synchronization shaft is arranged at the bottom of the rack 200, and 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 close to or away from the tray 210. The driving force of the servo motor can make the probe modules 221 on both sides keep synchronous movement through the synchronization shaft, so as to ensure that the probe 2211 and the battery on the tray 210 keep consistent contact pressure during the test process, and realize stable test of the battery.

[0065] During the test, a large amount of heat is generated, and the cooling system 300 is used to maintain the stable operation temperature of the equipment.

[0066] In some embodiments, referring to FIG. 2, the cabinet 100 and the cooling system 300 are included; the rack 200 is arranged inside the cabinet 100; the cooling system 300 includes: a first blowing assembly 310 for transverse blowing towards the battery; a second blowing assembly 320 for blowing upwards from the bottom of the battery; the top of the cabinet 100 is provided with an air outlet channel 330 corresponding to the second blowing assembly 320 and extending along both sides of the cabinet 100; and a cooling device 350 is used to cool the hot air discharged from the air outlet channel 330 and introduce the cooled air into the inside of the cabinet 100 to maintain the stable operation temperature of the equipment. It can be understood that by arranging the cabinet 100, a small relatively closed space is formed inside the cabinet 100, and only the temperature of the space inside the cabinet 100 needs to be maintained through the cooling system 300, which improves the cooling effect and reduces resource waste. In addition, inside the cabinet 100, the first blowing assembly 310 and the second blowing assembly 320 cooperate to make the air current passing through the battery exchange heat with the battery and then discharged through the air outlet channel 330 at the top. The cooling device 350 cools the hot air discharged from the air outlet channel 330 and introduces the cooled air into the inside of the cabinet 100, so that a continuous circulating cooling air current is formed in the cabinet 100, further ensuring that the equipment maintains a stable working temperature during the charging and discharging process, and thereby improving the overall operation efficiency and reliability of the equipment.

[0067] Further, inside the cabinet 100, referring to FIGS. 2-3, a baffle 340 is arranged above the two probe modules 221, and an air outlet channel 330 is formed between the baffle 340 and the cabinet 100; the cooling device 350 includes a cooling cavity 351, an air inlet fan 352, an air outlet fan 353, and a heat exchanger 354; the air inlet fan 352 is arranged at the upper part of the cooling cavity 351 and communicates with the end of the air outlet channel 330. It can be understood that the air inlet fan 352 is located in the air outlet channel 330, and the air outlet fan 353 is located outside the air outlet channel 330, that is, the baffle 340 separates the air inlet fan 352 and the air outlet fan 353, thereby forming a good air duct circulation path. The heat exchanger 354 is arranged obliquely in the cooling cavity 351 and is used for heat exchange; the air outlet fan 353 is arranged at the lower part of the cooling cavity 351 and is used for discharging the air cooled by the heat exchanger 354 into the inside of the cabinet 100. The air inlet fan 352 delivers hot air into the inside of the cooling cavity 351, and the hot air is changed into cold air through heat exchange with the heat exchanger 354, and finally is discharged into the air cooling circulation system through the air outlet fan 353.

[0068] Specifically, referring to FIG. 2, the heat exchanger 354 is a water-cooled radiator and has radiating fins, a water inlet, and a water outlet. Cooling water flows into the heat exchanger 354 through the water inlet, exchanges heat with the radiating fins, reduces the temperature of the radiating fins, and then discharges the water after heat exchange through the water outlet. Hot air enters the heat exchanger 354 and contacts the radiating fins, and the hot air is changed into cold air through heat exchange. Preferably, the heat exchanger 354 is arranged obliquely in the cooling cavity 351, so that the contact area of the radiating fins is increased, thereby improving the heat exchange efficiency.

[0069] Further, a liquid receiving disc 360 is arranged below the heat exchanger 354 and is used for containing cooling water generated in the water-cooled cooling process or leakage caused by failure.

[0070] In some embodiments, referring to FIGS. 2-3, a mounting frame 250 is arranged at the top of the rack 200 and is located between the air outlet channel 330 and the battery. The DCDC module can be installed in the mounting frame 250 in a pull-out manner. The DCDC module is located on the air duct line of the cooling system 300, so that the DCDC module can be continuously cooled before the cooling air flows into the air outlet channel 330. The pull-out installation manner reduces the difficulty of manual operation and facilitates installation and maintenance.

[0071] Specifically, the DCDC module is connected to the high-voltage direct-current bus and charges and discharges the blade battery by means of the probe module 221, so as to ensure low loss of current transmission. The DCDC module is internally provided with a fan, which is helpful for heat dissipation. In addition, the DCDC module is directly installed in the inside of the equipment and is connected with the positive and negative probe modules 221, so that the cable length is shortened and the consistency and reliability of the battery are improved.

[0072] Further, the installation frame 250 is provided with a fixed cable row for fixing and connecting the current cable of the probe module 221 and the DCDC module. The installation frame 250 is also equipped with a fire alarm system, which includes a smoke sensor and a CO sensor, for real-time monitoring of the internal environment of the device, detecting potential fire risks, and triggering an alarm signal according to the monitoring results to prompt relevant personnel to take timely protection or automatically start fire protection measures.

[0073] A battery testing method for the above-mentioned battery testing device to detect the battery. It includes:

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

[0075] b. Send 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 the speed reducer to make the probe module and the battery electrode fully press together through the synchronous belt, synchronous wheel and transmission shaft;

[0077] d. Control the DCDC module to charge and discharge the battery through the PLC system;

[0078] e. Form a cooling cycle through the inlet fan and outlet fan to maintain the temperature stability during the battery testing process;

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

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

Claims

1. A battery testing apparatus, characterized by, The battery test device comprises a rack, a tray and a detection assembly arranged on the rack, the tray is used for placing a battery to be tested, a power supply assembly, the power supply assembly comprises a power supply module, a power supply conversion system and a DCDC conversion module, the power supply conversion system is used for converting electric energy output by the power supply module into high-voltage direct current, the DCDC conversion module is connected with the power supply conversion system and is used for converting the high-voltage direct current into stable direct current voltage suitable for the detection assembly, and the battery is subjected to charge and discharge test.

2. The battery test device according to claim 1, further comprising a power supply cabinet, wherein the power supply cabinet is internally provided with the power supply module and the power supply conversion system; the power supply cabinet is internally provided with a PLC control system, and the PLC control system is used for coordinating the work of the power supply module and the power supply conversion system so that the power supply module and the power supply conversion system can cooperate to output high-voltage direct current to the DCDC conversion module. The detection assembly comprises probe modules arranged on both sides of the tray, the probe modules are electrically connected with the power supply conversion module, a driving member is in transmission connection with the probe modules and is used for driving the probe modules to move between the positions close to or far away from the tray so as to test the battery.

4. The battery test device according to claim 3, wherein the probe module comprises probes and a probe mounting rack, the probe mounting rack is provided with a first sliding member, the rack is provided with a second sliding member matched with the first sliding member, the probe mounting rack is in sliding connection with the rack and is used for adjusting the position of the probes, and the driving member is a motor, the output end of the motor is provided with a driving wheel, the probe mounting rack is provided with a screw rod, one end of the screw rod is provided with a driven wheel, the driving wheel is in transmission connection with the driven wheel, and the motor drives the probe mounting rack to move on the rack, so that the probes are in contact with or separated from the battery, thereby facilitating the charge and discharge test of the battery.

5. The battery test device according to claim 4, wherein a synchronous shaft is arranged between the probe modules arranged on both sides of the tray, the synchronous shaft is used for linking the probe modules arranged on both sides of the tray, so that the probe modules can synchronously move close to or far away from the tray, thereby ensuring that the probes and the battery on the tray maintain consistent contact pressure during the test, and realizing stable test of the battery.

6. The battery test device according to claim 4, wherein the probe mounting rack comprises a mounting plate and a base, the probes are fixed on the mounting plate, the first sliding member is arranged below the base, and the probe mounting plate is connected with the base through an adjusting rod.

7. The battery test device according to claim 1, further comprising a cabinet and a cooling system, the cabinet is arranged inside the cabinet, the cooling system comprises a first blowing assembly for blowing horizontally towards the battery and a second blowing assembly for blowing upwards from the bottom of the battery, the top of the cabinet is provided with an air outlet channel corresponding to the second blowing assembly and extending along both sides of the cabinet.

3. The battery testing apparatus of claim 1, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A cooling device is arranged to cool the hot air discharged from the air outlet channel and introduce the cooled air into the cabinet to maintain a stable operation temperature of the device.

8. The battery testing device of claim 7, wherein, A baffle is arranged above the two probe modules in the cabinet, and an air outlet channel is formed between the baffle and the cabinet; The cooling device comprises a cooling cavity, an air inlet fan, an air outlet fan and a heat exchanger; The air inlet fan is arranged at the upper portion of the cooling cavity and communicates with the end of the air outlet channel; The heat exchanger is arranged in the cooling cavity in an inclined manner for heat exchange; The air outlet fan is arranged at the lower portion of the cooling cavity for discharging the air cooled by the heat exchanger into the cabinet.

9. The battery testing device of claim 7, wherein, A mounting frame is arranged between the air outlet channel and the battery at the top of the cabinet; The DCDC module is arranged in the mounting frame in a pull-out manner.

10. A battery testing method, characterized by, The battery testing device of claims 1-9 is used for testing a battery.

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