A battery discharge testing device

Abstract

This utility model discloses a battery discharge testing device. The device includes a control box and at least one load cell. The control box has battery connection terminals, a communication port, and multiple load cell connection terminals. The battery connection terminals are connected to the battery; the load cell connection terminals are connected to the load cell; the communication port is connected to the power plant's control system. The battery is installed in the power plant and connected to the load cells. The control box acquires the battery's voltage and current signals through the battery connection terminals and uploads the battery's operating information to the power plant's control system through the communication port. The control box also controls the resistance of the load cells through the load cell connection terminals. This utility model enables precise control of the battery discharge current, improving testing efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, and in particular to a battery discharge test device. Background Technology

[0002] In the DC power system of a nuclear power plant, DC batteries can provide reliable DC power to safety-related equipment required for instrumentation, monitoring, and other important functions necessary for plant shutdown.

[0003] When a power plant loses both external and internal AC power simultaneously, the DC battery must have sufficient capacity to continuously supply power to the necessary DC and AC loads, meeting their power requirements for 72 hours. Therefore, whether the battery performance meets the design requirements is an important monitoring item during the commissioning and operation phase of a nuclear power plant.

[0004] To verify that the battery performance meets design requirements, performance and operational tests are required during the commissioning phase. In existing technologies, monitoring during battery discharge tests requires multiple manual measurements and control of the discharge current. However, manual methods reduce testing efficiency and pose lower safety risks. Utility Model Content

[0005] This invention provides a battery discharge testing device to achieve precise control of the battery discharge current, thereby improving testing efficiency and safety.

[0006] In a first aspect, this utility model provides a battery discharge test device, which includes a control box and at least one load box;

[0007] The control box is equipped with a battery connection terminal, a communication port, and multiple load cell connection terminals; the battery connection terminal is connected to the battery; the load cell connection terminal is connected to the load cell; the communication port is connected to the power plant's control system; wherein, the battery is located in the power plant, and the battery is connected to the load cell.

[0008] The control box is used to acquire the voltage and current signals of the battery through the battery connection terminal, and to upload the battery's operating information to the power plant's control system through the communication port; the control box is also used to control the resistance of the load box through the load box connection terminal.

[0009] Optionally, the control box includes a voltage and current acquisition module, a control module, and an output module;

[0010] The battery connection terminal is connected to the input terminal of the voltage and current acquisition module, and the output terminal of the voltage and current acquisition module is connected to the first input terminal of the control module. The voltage and current acquisition module is used to acquire the voltage and current signals of the battery and send them to the control module.

[0011] The first output terminal of the control module is connected to the input terminal of the output module, and the load bank connection terminal is connected to the output terminal of the output module. The control module is specifically used to send control commands to the load bank through the output module to control the resistance of the load bank.

[0012] Optionally, the control box may also include a communication module;

[0013] The communication port is connected to the output of the communication module, and the input of the communication module is connected to the second output of the control module. The control module is specifically used to upload the working information of the battery to the control system of the power plant through the communication module.

[0014] Optionally, the communication module is connected to the power plant's control system via RS485 communication.

[0015] Optionally, the control box may also include an input module;

[0016] The output terminal of the input module is connected to the second input terminal of the control module;

[0017] The input module is used to receive the battery discharge curve and test acceptance criteria, and send them to the control module;

[0018] The control module is also used to generate discharge test results based on the voltage and current signals of the battery, the battery discharge curve, and the test acceptance criteria, and to generate an alarm signal when the voltage and current signals of the battery do not meet the battery discharge curve and the test acceptance criteria.

[0019] Optionally, the control box may also include a display module;

[0020] The input terminal of the display module is connected to the third output terminal of the control module, and the display module is used to display the voltage and current signals of the battery in real time.

[0021] Optionally, the display module includes a display screen.

[0022] Optionally, the control box is also equipped with a power on / off button, indicator lights, and a power socket;

[0023] The power socket is used to connect to a power source, and the indicator light is used to illuminate when the power source is connected; the power switch button is used to control the power on and off of the control box.

[0024] Optionally, the battery includes a lead-acid flooded battery.

[0025] Optionally, the power plant is a nuclear power plant.

[0026] This invention provides a battery discharge testing device, comprising a control box and at least one load box. The control box is equipped with battery connection terminals, a communication port, and multiple load box connection terminals. The battery connection terminals can connect to the battery to collect its voltage and current signals. The load box connection terminals can connect to the load box for control. The communication port can connect to the power plant's control system to upload the battery's operating information. The battery and load boxes are connected to provide a matching high-current load during the battery discharge test. The control box acquires the battery's voltage and current signals through the battery connection terminals and uploads the battery's operating information to the power plant's control system through the communication port. The control box also controls the resistance of the load boxes through the load box connection terminals, enabling precise control of the battery discharge current without manual operation, thus improving testing efficiency and safety. Attached Figure Description

[0027] Figure 1 A schematic diagram of the structure of a battery discharge test device provided in an embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the control box in the battery discharge test device provided in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of the control box in the battery discharge test device provided in this embodiment of the utility model;

[0030] Figure 4 A schematic diagram of the control box in another battery discharge test device provided in this embodiment of the present utility model. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] Figure 1This is a schematic diagram of the structure of a battery discharge test device provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the control box in the battery discharge test device provided in this embodiment of the utility model. Figure 1 and Figure 2 As shown, the battery discharge test device includes a control box 10 and at least one load box 20.

[0033] The control box 10 is equipped with a battery connection terminal 101, a communication port 102, and multiple load box connection terminals 103; the battery connection terminal 101 is connected to the battery; the load box connection terminal 103 is connected to the load box 20; the communication port 102 is connected to the power plant's control system; wherein, the battery is installed in the power plant and is connected to the load box 20.

[0034] The control box 10 is used to obtain the voltage and current signals of the battery through the battery connection terminal 101, and to upload the battery's operating information to the power plant's control system through the communication port 102; the control box is also used to control the resistance of the load box 20 through the load box connection terminal 103.

[0035] The storage battery serves as the power source for the power plant's DC system, supplying power to critical functional equipment. To verify whether the battery performance meets requirements, performance and operational tests are conducted during the commissioning phase. The battery performance test is a constant-capacity discharge test to determine if the battery is aging; for example, an 8-hour discharge at 429A can be performed on-site. The battery operational test is a discharge test based on the battery's actual operating cycle and load, performed on-site according to the battery's actual operating curve; for example, the maximum discharge current can be 1433A. Both performance and operational tests require significant discharge current. However, on-site testing typically lacks a matching high-current DC load to support these tests. Therefore, the load cell 20 in the battery discharge test device provided in this embodiment is used as the load. In the battery discharge test device, the battery's discharge terminal is connected to the load cell 20 (not shown in the figure), supplying power to the load cell 20 to generate different currents to test the battery's performance. Different load cells 20 have different internal resistances. The discharge terminals of the battery can be selectively connected to different models and quantities of load cells 20. The control box 10 is also connected to the load cells 20 to which the battery is connected via load cell connection terminals 103, controlling the resistance within the load cells 20 and thus controlling the battery discharge current to achieve performance testing of different battery models. The power plant's control system can be a distributed control system (DCS), which can collect various data and issue control commands.

[0036] For details, please refer to Figure 2The control box 10 can be a box structure, equipped with a battery connection terminal 101, a communication port 102, and multiple load box connection terminals 103. This facilitates connection between the battery connection terminal 101 and the battery, connection between the load box connection terminals 103 and the load box 20, and connection between the communication port 102 and the power plant's control system. The control box 10 contains computer equipment. After acquiring the battery voltage and current signals through the battery connection terminal 101, the control box 10 can determine the validity of these signals. For example, it can set the valid range for the voltage and current signals; if the acquired signals are within this range, they are considered valid. The control box 10 can also send commands to the load box 20 through the load box connection terminals 103 based on the acquired battery voltage and current signals, controlling the resistance of the load box 20. This achieves closed-loop control of the battery discharge current, enabling precise control without manual operation, thus improving testing efficiency and safety.

[0037] In addition, the control box 10 can also upload the battery's operating information to the power plant's control system. The battery's operating information can include the acquisition of the battery's voltage and current signals. The control box 10 can also upload the battery discharge test results to the power plant's control system. The battery discharge test results are obtained by the control box 10 through calculation and analysis based on the continuously acquired battery voltage and current signals over a certain period of time. The control box 10 uploads the battery's operating information and battery discharge test results to the power plant's control system so that staff can promptly confirm the battery's status and battery discharge test results.

[0038] This utility model provides a battery discharge testing device, which includes a control box and at least one load box. The control box is equipped with battery connection terminals, a communication port, and multiple load box connection terminals. The battery connection terminals can be connected to the battery to collect its voltage and current signals. The load box connection terminals can be connected to the load box to control it. The communication port can be connected to the power plant's control system to upload the battery's operating information to the power plant's control system. The battery is connected to the load box to provide a matching high-current load during the battery discharge test. The control box acquires the battery's voltage and current signals through the battery connection terminals and uploads the battery's operating information to the power plant's control system through the communication port. The control box is also used to control the resistance of the load box through the load box connection terminals, which can achieve precise control of the battery discharge current without manual operation, improving test efficiency and safety.

[0039] This utility model embodiment also provides another battery discharge test device. Figure 3This is a schematic diagram of the internal structure of the control box in the battery discharge test device provided in this embodiment of the utility model, as shown below. Figure 3 As shown, the control box 10 in the battery discharge test device also includes a voltage and current acquisition module 110, a control module 120, and an output module 130.

[0040] The battery connection terminal 101 is connected to the input terminal of the voltage and current acquisition module 110. The output terminal of the voltage and current acquisition module 110 is connected to the first input terminal of the control module 120. The voltage and current acquisition module 110 is used to acquire the voltage and current signals of the battery and send them to the control module 120.

[0041] The first output terminal of the control module 120 is connected to the input terminal of the output module 130, and the load bank connection terminal 103 is connected to the output terminal of the output module 130. The control module 120 is specifically used to send control commands to the load bank 20 through the output module 130 to control the resistance of the load bank 20.

[0042] Specifically, the voltage and current acquisition module 110 can acquire the battery voltage and current signals in real time through the battery connection terminal 101 and transmit them to the control module 120. The control module 120 is a computer device. After obtaining the battery voltage and current signals, the control module 120 can determine their validity. For example, it can set the valid range for the voltage and current signals; if the acquired voltage and current signals are within the valid range, they are considered valid. The control module 120 can also send control commands to the load bank 20 through the output module 130 based on the acquired battery voltage and current signals to control the resistance of the load bank 20. Because the resistance of the load bank 20 changes, the discharge current of the battery connected to the load bank 20 also changes, thereby achieving closed-loop control of the battery discharge current. This allows for precise control of the battery discharge current without manual operation, improving experimental efficiency and safety.

[0043] In addition, the voltage and current acquisition module 110 in the control box 10 realizes the process of acquiring voltage and current during the battery discharge test, which reduces the risk of battery short circuit and electric shock caused by manual current measurement and improves safety.

[0044] The control module 120 controls the resistance in the load bank 20. Since the resistance in the load bank 20 and the battery discharge current are known, the discharge current of the battery can be controlled by adjusting the resistance in the load bank 20. This ensures that the battery discharge current meets the requirements of the battery discharge test and corresponds to different battery discharge currents at different times during the test. For example, in a battery discharge test performed at a discharge rate of 429A for 8 hours, the battery discharge current can be made to meet the 429A requirement by adjusting the resistance in the load bank 20. In addition, the battery operation test is a discharge test conducted based on the actual working cycle and load of the battery. On-site, it is performed according to the actual operating curve of the battery, with a maximum discharge current of 1433A. When this device is used in the battery operation test, the resistance in the load box 20 can be controlled at different times, thereby controlling the corresponding battery discharge current. During this period, the battery discharge current can be 1433A, 72A, 44A, 340A, 63A, 39A, etc., so as to obtain the actual operating curve of the battery. The control module 120 can determine whether the battery performance meets the requirements by comparing the actual operating curve of the battery with the standard battery discharge curve.

[0045] Optional, continue to refer to Figure 3 The control box also includes a communication module 140; the communication port 102 is connected to the output of the communication module 140, and the input of the communication module 140 is connected to the second output of the control module 120. The control module 120 is specifically used to upload the working information of the battery to the power plant's control system through the communication module 140.

[0046] Specifically, the communication module 140 can upload the battery discharge test results calculated by the control module 120 to the power plant's control system. The battery discharge test results are obtained by the control module 120 through calculation and analysis based on the voltage and current signals of the battery continuously acquired over a certain period of time. The communication module 140 also uploads the battery's working information and the battery discharge test results to the power plant's control system so that staff can promptly confirm the battery's status and the battery discharge test results.

[0047] The communication module 140 can also be connected to the voltage and current acquisition module 110 and the output module 130 to directly upload the voltage and current signals of the battery acquired by the voltage and current acquisition module 110 to the power plant's control system, and send the working status of the output module 130 to the power plant's control system so that the test personnel can understand the test status.

[0048] Optionally, the communication module 140 can communicate with the power plant's control system via RS485 communication.

[0049] Specifically, the communication module 140 communicates with the power plant's control system via RS485 communication, which can meet the data acquisition needs of the power plant's control system and enable the power plant's control system to monitor the battery discharge test process at all times.

[0050] Optional, continue to refer to Figure 3 The control box 10 also includes an input module 150; the output terminal of the input module 150 is connected to the second input terminal of the control module 120; the input module 150 is used to receive the battery discharge curve and test acceptance standards, and send them to the control module 120.

[0051] The control module 120 is also used to generate discharge test results based on the battery voltage and current signals, the battery discharge curve and the test acceptance standards, and to generate an alarm signal when the battery voltage and current signals do not meet the battery discharge curve and the test acceptance standards.

[0052] Specifically, the control module 120 can generate discharge test results based on the battery voltage and current signals, the battery discharge curve, and the test acceptance standards. It can also generate control signals to control the switching of the resistors in the load box 20, thereby controlling the overall resistance of the load box 20 and calculating the corresponding battery output current. This achieves closed-loop control of the battery discharge current, eliminating the need for manual operation during the control process and improving test efficiency and safety.

[0053] In addition, the communication module 140 can also send the discharge test results and alarm signals generated by the control module 120 to the power plant's control system so that the test personnel can understand the test status.

[0054] Optionally, the control box 10 also includes a display module 160; the input terminal of the display module 160 is connected to the third output terminal of the control module 120, and the display module 160 is used to display the voltage and current signals of the battery in real time.

[0055] Specifically, the display module 160 can be used for monitoring the operating status of the battery discharge test device and collecting data. For example, the display module 160 can display the voltage and current signals of the battery in real time, as well as the discharge test results and alarm signals. When the display module 160 is a touch screen, it can also control the control module 120, such as power on / off operation, thereby realizing human-machine interaction.

[0056] Optionally, the display module 160 includes a display screen.

[0057] Figure 4 A schematic diagram of the control box in another battery discharge test device provided in this embodiment of the present invention is shown below. Figure 4As shown, optionally, the control box 10 is also equipped with wheels 104 for moving the control box 10. The control box 10 is also equipped with a keyboard 108 for operating and controlling the battery discharge test device to achieve human-machine interaction.

[0058] like Figure 4 As shown, optionally, the control box 10 is also equipped with a power on / off button 105, an indicator light 106, and a power socket 107.

[0059] The power socket 107 is used to connect to a power source, and the indicator light 106 illuminates when power is connected. The power on / off button 105 is used to control the power on and off of the control box 10. The control box 10 is also equipped with a power socket 107 so that the control box 10 can be connected to a power source.

[0060] Optionally, the battery may include a lead-acid flooded battery.

[0061] Specifically, lead-acid flooded batteries can be arranged in multiple rows. For example, each row of lead-acid flooded batteries may have 106 cells, a rated capacity of 3430AH, and an operating voltage range of 186VDC-247VDC. In the field, lead-acid flooded batteries can be discharged at a rate of 429A for 8 hours. The battery operation test is a discharge test conducted based on the actual working cycle and load of the battery, and is performed on-site according to the actual operating curve of the battery. For example, the maximum discharge current can be 1433A.

[0062] Optional, the power plant is a nuclear power plant.

[0063] The nuclear power plant's DC power system provides reliable DC power to safety-related equipment required for instrumentation, monitoring, and other critical functions during plant shutdown. When both external and internal AC power are lost simultaneously, the DC batteries must have sufficient capacity to continuously power the necessary DC and AC UPS loads, meeting their power requirements for 72 hours. Therefore, whether the battery performance meets design requirements is a crucial monitoring aspect during the nuclear power plant's commissioning and operation phases.

[0064] Specifically, in nuclear power plants, the discharge performance of batteries is crucial and affects the safety of the plant. Therefore, a safer and more efficient battery discharge testing device is needed. The battery discharge testing device in this embodiment can meet the battery discharge testing requirements in nuclear power plants. This device is small in size and easy to operate, which can improve testing efficiency.

[0065] The successful application of the battery discharge test device in this embodiment enables precise automatic control of the battery discharge current and cycle during battery discharge tests in power plants. It can also be connected to the power plant's DCS system to achieve full-process data monitoring and test result acceptance. Furthermore, the device allows for programmable test methods and acceptance standards, enabling data recording and result judgment. Additionally, the device is characterized by its small size, ease of operation, and few interfaces, requiring only simple parameter settings, thus reducing the workload of test personnel and improving test efficiency.

[0066] This utility model embodiment provides a method to obtain the voltage and current signals of the battery through the battery connection terminal, upload the battery's operating information to the power plant's control system through the communication port, and control the resistance of the load box through the load box connection terminal. This enables precise control of the battery discharge current without manual operation, improving test efficiency and safety.

[0067] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery discharge testing device, characterized in that, The battery discharge test device includes a control box and at least one load box; The control box is equipped with a battery connection terminal, a communication port, and multiple load cell connection terminals; the battery connection terminal is connected to the battery; the load cell connection terminal is connected to the load cell; the communication port is connected to the power plant's control system; wherein, the battery is located in the power plant, and the battery is connected to the load cell. The control box is used to acquire the voltage and current signals of the battery through the battery connection terminal, and to upload the battery's operating information to the power plant's control system through the communication port; the control box is also used to control the resistance of the load box through the load box connection terminal.

2. The battery discharge test apparatus according to claim 1, characterized in that, The control box includes a voltage and current acquisition module, a control module, and an output module; The battery connection terminal is connected to the input terminal of the voltage and current acquisition module, and the output terminal of the voltage and current acquisition module is connected to the first input terminal of the control module. The voltage and current acquisition module is used to acquire the voltage and current signals of the battery and send them to the control module. The first output terminal of the control module is connected to the input terminal of the output module, and the load bank connection terminal is connected to the output terminal of the output module. The control module is specifically used to send control commands to the load bank through the output module to control the resistance of the load bank.

3. The battery discharge test apparatus according to claim 2, characterized in that, The control box also includes a communication module; The communication port is connected to the output of the communication module, and the input of the communication module is connected to the second output of the control module. The control module is specifically used to upload the working information of the battery to the control system of the power plant through the communication module.

4. The battery discharge test apparatus according to claim 3, characterized in that, The communication module is connected to the power plant's control system via RS485 communication.

5. The battery discharge test apparatus according to claim 2, characterized in that, The control box also includes an input module; The output terminal of the input module is connected to the second input terminal of the control module; The input module is used to receive the battery discharge curve and test acceptance criteria, and send them to the control module; The control module is also used to generate discharge test results based on the voltage and current signals of the battery, the battery discharge curve, and the test acceptance criteria, and to generate an alarm signal when the voltage and current signals of the battery do not meet the battery discharge curve and the test acceptance criteria.

6. The battery discharge test apparatus according to claim 1, characterized in that, The control box also includes a display module; The input terminal of the display module is connected to the third output terminal of the control module, and the display module is used to display the voltage and current signals of the battery in real time.

7. The battery discharge test apparatus according to claim 6, characterized in that, The display module includes a display screen.

8. The battery discharge test apparatus according to claim 1, characterized in that, The control box is also equipped with a power on / off button, indicator lights, and a power socket; The power socket is used to connect to a power source, and the indicator light is used to illuminate when the power source is connected; the power switch button is used to control the power on and off of the control box.

9. The battery discharge test apparatus according to claim 1, characterized in that, The battery includes a lead-acid flooded battery.

10. The battery discharge test apparatus according to claim 1, characterized in that, The power plant in question is a nuclear power plant.

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