Aging test device

Abstract

The utility model discloses an aging test device, and relates to the technical field of aging test. The aging test device comprises a main control module, a plurality of communication modules, a relay control module, an upper computer, a first RS485 module and a second RS485 module. The communication modules are electrically connected with the main control module, each communication module is provided with a plurality of communication channels, and the communication modules are connected with the corresponding BMS protection boards through the communication channels; the relay control module is electrically connected with the main control module and the communication module, the relay control module comprises a plurality of relays, and the main control module can control opening and closing of the corresponding communication channel through each relay; the upper computer is electrically connected with the main control module through the first RS485 module, and is also electrically connected with the communication module through the second RS485 module. According to the aging test device provided by the utility model, a plurality of BMS protection boards can be tested at the same time, so that the aging test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aging testing, in particular to an aging testing device. Background Art

[0002] In the prior art, when performing aging tests on BMS (Battery Management System) protection boards, the single-cell aging method is used, which requires manual operation. Single-cell aging has problems such as low efficiency, large number of products, and messy stacking. In the mass production process, the aging time of a protection board often takes four or five hours, or even longer. During the aging process, manual supervision is required to constantly patrol and check for problems. The labor cost is high, and it is easy to fail to discover problems in time, which can easily lead to problems such as missed detection, re-inspection, and false detection. Moreover, the single-cell aging method is not convenient for unified storage and unified output of data. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an aging test device that can perform aging tests on multiple BMS protection boards at the same time to improve the test efficiency.

[0004] The aging test device according to the embodiment of the utility model includes:

[0005] Main control module;

[0006] A plurality of communication modules, each of which is electrically connected to the main control module, and each of which has a plurality of communication channels, and each of which is connected to a corresponding BMS protection board through each communication channel;

[0007] A relay control module, electrically connected to the main control module and the communication module respectively, wherein the relay control module comprises a plurality of relays, and the main control module can control the opening and closing of the corresponding communication channel through each of the relays;

[0008] The host computer is electrically connected to the main control module via a first RS485 module, and the host computer is also electrically connected to the communication module via a second RS485 module.

[0009] According to some embodiments of the present utility model, the aging test device further includes a power supply module, and the power supply module is electrically connected to the main control module, the communication module, the relay control module, the first RS485 module and the second RS485 module respectively.

[0010] According to some embodiments of the present utility model, the power supply module includes:

[0011] A first DC / DC unit, used to convert an externally input 12V power supply into a 5V power supply to supply power to the relay control module;

[0012] A voltage isolation module, used for isolating and supplying power to the communication module, the first RS485 module and the second RS485 module through the 5V power supply;

[0013] The second DC / DC unit is used to convert the 5V power supply into a 3.3V power supply to supply power to the main control module.

[0014] According to some embodiments of the present utility model, the aging test device further includes:

[0015] A decoder, electrically connected to the main control module;

[0016] A dual-color indicator light module is electrically connected to the decoder, and the dual-color indicator light module is used to indicate the state of the BMS protection board.

[0017] According to some embodiments of the present invention, the aging test device further includes a real-time clock module, and the real-time clock module is electrically connected to the main control module.

[0018] According to some embodiments of the present invention, the aging test device further includes a storage module, and the storage module is electrically connected to the main control module.

[0019] According to some embodiments of the present utility model, the aging test device further includes a buzzer alarm module, and the buzzer alarm module is electrically connected to the main control module.

[0020] According to some embodiments of the present invention, the aging test device further includes a plurality of voltage acquisition modules, each of which is used to acquire the voltage of the corresponding BMS protection board.

[0021] According to some embodiments of the present utility model, the aging test device further includes a reset button, and the reset button is electrically connected to the main control module.

[0022] According to some embodiments of the present utility model, the aging test device further includes a power light, and the power light is electrically connected to the main control module.

[0023] According to the aging test device of the embodiment of the utility model, at least the following beneficial effects are achieved: since each communication module has multiple communication channels, each communication module can be connected to multiple BMS protection boards, and the main control module can perform aging tests on multiple BMS protection boards at the same time through the communication modules, and send the test results to the host computer, thereby improving the efficiency of the aging test and realizing unified output and management of data; moreover, the main control module can select any communication channel of each communication module through the relay of the relay control module, so as to realize sequential testing of all BMS protection boards connected to each communication module.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the structure of an aging test device according to an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the specific structure of the aging test device according to an embodiment of the utility model;

[0028] Figure 3 This is a circuit schematic diagram of the main control module of the embodiment of the utility model;

[0029] Figure 4 The circuit schematic diagram of the real-time clock module, storage module and buzzer alarm module of the embodiment of the utility model;

[0030] Figure 5 A circuit schematic diagram of a communication module according to an embodiment of the present utility model;

[0031] Figure 6 It is a circuit schematic diagram of the first RS485 module and the second RS485 module of the utility model embodiment;

[0032] Figure 7 The circuit schematic diagram of the decoder and the dual-color indicator light module of the embodiment of the utility model;

[0033] Figure 8 One of the circuit schematic diagrams of the relay control module of the embodiment of the utility model;

[0034] Fig. 9 The second circuit schematic diagram of the relay control module of the embodiment of the utility model;

[0035] Fig.10 This is one of the circuit schematics of the voltage acquisition module of the embodiment of the utility model;

[0036] Fig.11 This is the second circuit schematic diagram of the voltage acquisition module of the embodiment of the utility model;

[0037] Fig.12 This is the third circuit schematic diagram of the voltage acquisition module of the embodiment of the utility model;

[0038] Fig.13 This is a circuit diagram of a power supply module according to an embodiment of the present utility model;

[0039] Reference numerals:

[0040] Main control module 100, communication module 200, BMS protection board 300, relay control module 400, host computer 500, first RS485 module 600, second RS485 module 700, first DC / DC unit 810, voltage isolation module 820, second DC / DC unit 830, decoder 900, dual-color indicator light module 1000, real-time clock module 1100, storage module 1200, buzzer alarm module 1300, voltage acquisition module 1400. DETAILED DESCRIPTION

[0041] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] like Figure 1 and Figure 2 As shown, an embodiment of the utility model proposes an aging test device, including: a main control module 100, several communication modules 200, a relay control module 400, a host computer 500, a first RS485 module 600 and a second RS485 module 700; the communication module 200 is electrically connected to the main control module 100, and each communication module 200 has a plurality of communication channels, and the communication module 200 is connected to the corresponding BMS protection board 300 through each communication channel; the relay control module 400 is electrically connected to the main control module 100 and the communication module 200 respectively, the relay control module 400 includes a plurality of relays, and the main control module 100 can control the opening and closing of the corresponding communication channel through each relay; the host computer 500 is electrically connected to the main control module 100 through the first RS485 module 600, and the host computer 500 is also electrically connected to the communication module 200 through the second RS485 module 700.

[0046] Specifically, Figure 3 As shown, in this example, the main control module 100 includes a main control MCU U5 and its peripheral circuits, wherein the main control MCU U5 can use a microprocessor of the model STM32F103RCT6; it should be noted that the main control MCU U5 can also use other types of microprocessors, such as APM32E103RCT6, APM32F103RCT6, etc., but not limited to this. The main control module 100 is set on the control board, and the communication module 200 is set on the communication board; Figure 1 As shown, the main control module 100 can be connected to multiple communication boards (for example, three boards), and each communication board can be connected to multiple BMS protection boards 300 (for example, 30 boards); therefore, through one main control module 100, multiple communication modules 200 can be controlled at the same time, and aging tests can be performed on multiple BMS protection boards 300, thereby improving the test efficiency.

[0047] like Figure 5As shown, in some embodiments of the present invention, the communication module 200 uses RS485 communication to communicate with the main control module 100 and the BMS protection board 300. The communication module 200 includes a 485 chip U21, and the 485 chip U21 is connected to the CPU_RX_485_2 and CPU_TX_485_2 pins of the main control MCU U5 through a dual-channel isolation chip U23, thereby avoiding signal interference between the communication module 200 and the main control module 100 and improving the stability of the system operation. The communication module 200 has multiple communication channels, and the communication module 200 communicates with the corresponding BMS protection board 300 through each communication channel, thereby testing the BMS protection board 300 and obtaining the test results of the BMS protection board 300.

[0048] like Figure 8 and Fig. 9 As shown, in some embodiments of the present invention, the relay control module 400 includes a plurality of relays ( Figures 8 to 9 15 relays are shown in the figure), and the controlled ends of the 15 relays are respectively connected to the K_CTR_01-K_CTR_15 pins of the main control MCU U5. The main control MCU U5 can select different communication channels connected to the communication module 200 by controlling the on and off of different relays, thereby testing the BMS protection board 300 corresponding to the selected communication channel.

[0049] like Figure 2 and Figure 6 As shown, in some embodiments of the present invention, the host computer 500 is connected to the control board through two 485s, wherein the host computer 500 is connected to the main control module 100 of the control board through the first RS485 module 600, for communicating with the main control module 100, initiating control of the main control module 100, and reading relevant information of the main control module 100; the host computer 500 also uses the second RS485 module 700 to connect the communication module 200 through the control board, and the host computer 500 communicates with the communication module 200 through the second RS485 module 700, thereby obtaining relevant information of the BMS protection board 300. The host computer 500 can manually or automatically send instructions to the main control module 100, so that the main control module 100 turns on the specified relay in the relay control module 400, and then the host computer 500 will automatically communicate with the corresponding BMS protection board 300 through the second RS485 module 700, so as to obtain the information of the corresponding BMS protection board 300, and store the information in the database for future reference.

[0050] According to the aging test device of the embodiment of the utility model, after connecting the control board, the communication board and all the BMS protection boards 300 that need aging test, it can enter the unattended mode. In this mode, the host computer 500 can send control commands to the main control module 100, automatically activate the relays on the communication board in turn, and connect all the connected BMS protection boards 300 in sequence; when the host computer 500 obtains the various parameters of the BMS protection board 300 connected to a channel, it automatically switches to the next channel, continues to obtain the data of the corresponding BMS protection board 300, and cycles in sequence. After obtaining the data of all BMS protection boards 300, it continues to perform the next round of tests according to the number of tests set by the system. All the acquired BMS data will be recorded in the database for subsequent tracking and tracing; the various inspection standards of the system can be pre-configured by the host computer 500, and the system can support mixed tests of BMS with multiple protocols and multiple specifications.

[0051] In some embodiments of the present invention, the aging test device further includes a power supply module, which is electrically connected to the main control module 100, the communication module 200, the relay control module 400, the first RS485 module 600 and the second RS485 module 700, respectively, for providing working power to each module. Figure 2 and Fig.13 As shown, in this example, the power supply module includes a first DC / DC unit 810, a voltage isolation module 820, and a second DC / DC unit 830; wherein the first DC / DC unit 810 is used to convert the external input 12V power supply into a 5V power supply to power the relay control module 400; the voltage isolation module 820 is used to isolate and power the communication module 200, the first RS485 module 600, and the second RS485 module 700 through a 5V power supply; the second DC / DC unit 830 is used to convert the 5V power supply into a 3.3V power supply to power the main control module 100. Specifically, as Fig.13 As shown, the first DC / DC unit 810 is connected to the external 12V power supply through the interface J1, and the 12V power supply is filtered and rectified after passing through the fuse F1, and the 12V power supply is converted into a 5V power supply through the DC / DC chip U11, and the relay control module 400 is powered. At the same time, after the 5V voltage is isolated and stabilized by the power isolation chip DC1 of the voltage isolation module 820, the output 5V_ISO is isolated and powered to the communication module 200, the first RS485 module 600 and the second RS485 module 700 to ensure the stable operation of the system. The second DC / DC unit 820 converts the 5V power supply into a 3V3 power supply through the DC / DC chip U8, and powers the main control module 100.

[0052] like Figure 2 and Figure 7As shown, in some embodiments of the present invention, the aging test device further includes a decoder 900 and a dual-color indicator light module 1000, the decoder 900 is electrically connected to the main control module 100, the dual-color indicator light module 1000 is electrically connected to the decoder 900, and the dual-color indicator light module 1000 is used to indicate the state of the BMS protection board 300. Specifically, as Figure 7 As shown, in this example, the decoder 900 uses 38 decoders U1, U2, U15 and U16, and the 38 decoders are connected to the main control MCU U5 of the main control module 100 through the LED1-LED12 pins. At the same time, the 38 decoders are connected to the dual-color indicator light module 1000 through the L1-L30 pins. The dual-color indicator light module 1000 includes a plurality of dual-color indicator light circuits, each of which is arranged on the corresponding BMS protection board 300. The dual-color indicator light circuit includes two colors (for example, green and red) of LED lights. When the test process and test results of the BMS protection board 300 are normal, one color of the light is lit (for example, green); when the test process and test results of the BMS protection board 300 are abnormal, the other color of the light is lit (for example, red), thereby playing a prompting role, and promptly reminding the staff that the test results are abnormal and need to be checked in time.

[0053] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the aging test device further includes a real-time clock module 1100, and the real-time clock module 1100 is electrically connected to the main control module 100. Specifically, Figure 4 As shown, the real-time clock module 1100 includes an RTC chip U4, the model of which may be BL5372 or the like. The real-time clock module 1100 is used to provide real-time time for the device.

[0054] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the aging test device further includes a storage module 1200, and the storage module 1200 is electrically connected to the main control module 100. Specifically, Figure 4 As shown, the storage module 1200 includes a memory chip U3, the model of which may be P25Q16SH-SSH-IT. The storage module 1200 is used to store the data required by the main control module 100 and the processed data.

[0055] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the aging test device further includes a buzzer alarm module 1300, and the buzzer alarm module 1300 is electrically connected to the main control module 100. Specifically, Figure 4As shown, the buzzer alarm module 1300 includes a buzzer SP1 and a transistor Q6, the base of the transistor Q6 is connected to the FB pin of the main control MCU U5 through a resistor R63, the emitter of the transistor Q6 is grounded, a resistor R64 is connected between the emitter and the base of the transistor Q6, the collector of the transistor Q6 is connected to the second pin of the buzzer SP1, and the first pin of the buzzer SP1 is connected to the 5V power supply provided by the power supply module. When the test process and test results of a certain BMS protection board 300 are abnormal, the main control module 100 can alarm through the buzzer alarm module 1300, thereby reminding the staff that the test results are abnormal and need to be checked in time.

[0056] Figures 10 to 12 As shown, in some embodiments of the present invention, the aging test device further includes a plurality of voltage acquisition modules 1400, each of which is used to collect the voltage of the corresponding BMS protection board 300. Figures 10 to 12 As shown, in this example, 20 voltage acquisition modules 1400 are shown, and the voltage acquisition module 1400 is used to collect the voltage of the corresponding BMS protection board 300, so as to check whether the voltage of each BMS protection board 300 is normal. The voltage acquisition module 1400 is isolated and powered by a DC3.3V-3.3V isolation module, such as Fig.10 As shown, the DC3.3V-3.3V isolation module includes a power isolation chip DC2, and the input pin of the power isolation chip DC2 is used to connect the 3V3_MCU voltage provided by the second DC / DC unit 830. After isolating and stabilizing the 3V3_MCU voltage, the 3V3 voltage is output to power the voltage acquisition module 1400; at the same time, the working state of the DC3.3V-3.3V isolation module is controlled by the main control module 100, and the main control module 100 controls whether the DC3.3V-3.3V isolation module is working by controlling the conduction and cutoff of the transistor Q3.

[0057] like Figure 3 As shown, in some embodiments of the present invention, the aging test device further includes a reset button SW1, which is electrically connected to the main control module 100. The reset button SW1 is used to reset and restart the main control module 100 when it fails.

[0058] like Figure 3 As shown, in some embodiments of the present invention, the aging test device further includes a power light LED 20, which is electrically connected to the main control module 100. The power light LED 20 is used to indicate the working state of the main control module 100. When the main control module 100 is turned on, the power light LED 20 is on, and when the main control module 100 is turned off, the power light LED 20 is off.

[0059] According to the aging test device of the embodiment of the utility model, up to 90 BMS protection boards 300 can be connected to perform aging tests at the same time. During the aging test, various parameters of the connected BMS protection boards 300 are automatically checked to find unqualified products. When unqualified products are found, an audible and visual alarm is issued to remind the tester to replace the protection board for testing. The test data can be sent to the host computer 500 and stored in the database for traceability and after-sales use.

[0060] According to the aging test device of the embodiment of the utility model, since each communication module 200 has multiple communication channels, each communication module 200 can be connected to multiple BMS protection boards 300, and the main control module 100 can perform aging tests on multiple BMS protection boards 300 at the same time through the communication module 200, and send the test results to the host computer, thereby improving the efficiency of the aging test and realizing unified output and management of data; moreover, the main control module 100 can select any communication channel of each communication module 200 through the relay of the relay control module 400, realize sequential testing of all BMS protection boards 300 connected to each communication module 200, and can perform sound and light alarms when unqualified products are found; during the test process, there is no need for manual duty at all times, and only needs to check when an abnormal alarm occurs, thereby reducing labor costs.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "further embodiments", "some specific embodiments" or "some examples" etc. means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aging test device, characterized in that: include: Main control module; A plurality of communication modules, each of which is electrically connected to the main control module, and each of which has a plurality of communication channels, and each of which is connected to a corresponding BMS protection board through each communication channel; A relay control module, electrically connected to the main control module and the communication module respectively, wherein the relay control module comprises a plurality of relays, and the main control module can control the opening and closing of the corresponding communication channel through each of the relays; The host computer is electrically connected to the main control module via a first RS485 module, and the host computer is also electrically connected to the communication module via a second RS485 module.

2. The aging test device according to claim 1, characterized in that: The aging test device further includes a power supply module, which is electrically connected to the main control module, the communication module, the relay control module, the first RS485 module and the second RS485 module respectively.

3. The aging test device according to claim 2, characterized in that: The power supply module comprises: A first DC / DC unit, used to convert an externally input 12V power supply into a 5V power supply to supply power to the relay control module; A voltage isolation module, used for isolating and supplying power to the communication module, the first RS485 module and the second RS485 module through the 5V power supply; The second DC / DC unit is used to convert the 5V power supply into a 3.3V power supply to supply power to the main control module.

4. The aging test device according to claim 1, characterized in that: The aging test device also includes: A decoder, electrically connected to the main control module; A dual-color indicator light module is electrically connected to the decoder, and the dual-color indicator light module is used to indicate the state of the BMS protection board.

5. The aging test device according to claim 1, characterized in that: The aging test device further comprises a real-time clock module, and the real-time clock module is electrically connected to the main control module.

6. The aging test device according to claim 1, characterized in that: The aging test device further includes a storage module, and the storage module is electrically connected to the main control module.

7. The aging test device according to claim 1, characterized in that: The aging test device further comprises a buzzer alarm module, and the buzzer alarm module is electrically connected to the main control module.

8. The aging test device according to claim 1, characterized in that: The aging test device further includes a plurality of voltage acquisition modules, each of which is used to acquire the voltage of the corresponding BMS protection board.

9. The aging test device according to claim 1, characterized in that: The aging test device further includes a reset button, and the reset button is electrically connected to the main control module.

10. The aging test device according to claim 1, characterized in that: The aging test device further comprises a power light, and the power light is electrically connected to the main control module.

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