Cascade type storage battery pack voltage monitoring device and system

Abstract

The utility model discloses a cascaded storage battery pack voltage monitoring device and a cascaded storage battery pack voltage monitoring system. Relates to the technical field of voltage monitoring. Comprising a main control module used for sending a measurement instruction or a charging instruction to a measurement transmission sub-module and also used for charging the measurement transmission sub-module; the measurement transmission sub-module is used for executing a measurement instruction or a charging instruction and transmitting measurement data to the main control module; each storage battery is provided with a measurement transmission sub-module, and the adjacent measurement transmission sub-modules are cascaded; the main control module and the measurement transmission sub-modules are detachably and electrically connected, the structure of the measurement device is improved on the basis of the traditional storage battery voltage measurement technology, the main control module and the measurement transmission sub-modules are matched, the adjacent measurement transmission sub-modules are cascaded, other wiring is not needed, maintenance and overhaul are facilitated, and the measurement efficiency is improved. And one main control module can correspondingly control a plurality of measurement transmission sub-modules, so that the measurement cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of voltage monitoring technology, specifically to a cascaded battery pack voltage monitoring device and system. Background Technology

[0002] During normal reactor operation, the battery system, through a UPS, continuously provides uninterrupted power to the reactor's safety systems and equipment after a loss of normal power, playing a crucial role in the reactor's safe operation. Regular monitoring of battery parameters such as cell size and specific gravity is necessary, along with an annual capacity verification test. During the test, battery voltage fluctuations are significant and require close monitoring. Currently, there are three common methods for measuring battery voltage: the first involves operators measuring the voltage of each battery individually with a voltmeter, which is time-consuming and labor-intensive; the second involves using a dedicated voltage measuring device to monitor the voltage of each battery, requiring each battery to be connected to the monitoring device via a set of wires, resulting in complex wiring and inconvenience for maintenance; the third utilizes a wireless communication module, connecting one or more batteries to a single module, which then communicates with a terminal wirelessly after measuring the voltage of one or more batteries. This method has simpler wiring, but due to reactor security requirements, wireless communication is prohibited in some areas, and wireless equipment is expensive, making it less suitable for reactors. Utility Model Content

[0003] The technical problem this invention aims to solve is that traditional battery voltage measurement technology involves complex wiring, inconvenient maintenance and repair, and requires a wireless communication module for each battery, resulting in high cost and low applicability. Therefore, this solution provides a cascaded battery pack voltage monitoring device and system. Based on traditional battery voltage measurement technology, the device structure is improved. Through the cooperation of the main control module and the measurement transmission sub-module, adjacent measurement transmission sub-modules are cascaded without the need for additional wiring, facilitating maintenance and repair. Furthermore, one main control module can control multiple measurement transmission sub-modules, significantly reducing measurement costs.

[0004] This utility model is achieved through the following technical solution:

[0005] This solution provides a cascaded battery pack voltage monitoring device, including:

[0006] The main control module is used to send measurement commands or charging commands to the measurement and transmission sub-module, and also to charge the measurement and transmission sub-module.

[0007] The measurement transmission submodule is used to execute measurement commands or charging commands, and also to transmit measurement data to the main control module; each battery is equipped with one measurement transmission submodule, and adjacent measurement transmission submodules are cascaded; the main control module and the measurement transmission submodule are detachably electrically connected.

[0008] Working principle of this solution: Traditional battery voltage measurement technology involves complex wiring, inconvenient maintenance and repair, and requires a wireless communication module for each battery, resulting in high cost and low applicability. In view of this, this solution provides a cascaded battery pack voltage monitoring device. Based on traditional battery voltage measurement technology, the device structure is improved. Through the cooperation of the main control module and the measurement transmission sub-module, adjacent measurement transmission sub-modules are cascaded without the need for additional wiring, which facilitates maintenance and repair. Moreover, one main control module can control multiple measurement transmission sub-modules, which greatly saves measurement costs.

[0009] A further optimized solution is that the main control module includes a first battery;

[0010] The measurement and transmission sub-module includes: a charging circuit, a second battery, an analog-to-digital converter chip, a shifter chip, and a relay chip;

[0011] The second battery is used to power the analog-to-digital converter chip, the shifter chip, and the relay chip;

[0012] The relay chip is used to isolate the first battery from the storage battery; the relay chip is also used to isolate the storage battery from the measurement and transmission submodule;

[0013] The analog-to-digital converter chip is used to perform analog-to-digital conversion on the measurement data;

[0014] The shifter chip is used to transmit the measurement data after analog-to-digital conversion; the shifter chips of adjacent measurement transmission sub-modules are cascaded.

[0015] A further optimized scheme is as follows: the serial input port and serial output port of the shifter chip are connected to the serial output port of the next-stage shifter chip and the serial input port of the previous-stage shifter chip, respectively; the CP clock ports of each shifter chip are cascaded and connected to the clock control center; the GND ground ports of each shifter chip are cascaded and connected to the clock control center; and the VCC power supply ports of each shifter chip are cascaded.

[0016] The VCC power port of the shifter chip is also connected to the charging circuit, analog-to-digital converter chip and battery through a relay chip;

[0017] The shifter chip's GND ground port is also connected to the charging circuit via a relay chip.

[0018] A further optimized solution is that the relay chip includes: a first relay, a second relay, a third relay, a fourth relay, a fifth relay, and a sixth relay;

[0019] The VCC power supply port of the shifter chip is connected to the positive terminal of the charging circuit through the switch of the first relay, and the GND ground port of the shifter chip is connected to the negative terminal of the charging circuit through the switch of the second relay.

[0020] The positive terminal of the charging circuit is connected to the VCC power supply terminal of the analog-to-digital converter chip via the switch of the third relay; the GND ground terminal of the analog-to-digital converter chip is connected to the negative terminal of the charging circuit.

[0021] The number of digital output terminals of the analog-to-digital converter chip corresponds one-to-one with the number of parallel input terminals of the shifter chip. Each digital output terminal of the analog-to-digital converter chip is connected in series with the coil of a fourth relay and then connected to the negative terminal of the charging circuit. Each parallel input terminal of the shifter chip is connected in series with the switch of a fourth relay and then connected to the VCC power supply terminal of the shifter chip.

[0022] The analog signal input positive terminal of the analog-to-digital converter chip is connected to the positive terminal of the battery after being connected in series with the switch of the fifth relay, and the analog signal input negative terminal of the analog-to-digital converter chip is connected to the negative terminal of the battery after being connected in series with the switch of the sixth relay.

[0023] A further optimized solution is to ground one end of the coils of the first, second, third, fifth, and sixth relays, and connect the other end to the second battery.

[0024] A further optimized solution is that the shifter chip includes: an input trigger circuit, and multiple trigger shift circuits with the same circuit structure, with each trigger circuit cascaded.

[0025] The input triggering circuit includes: an input D flip-flop, a first NOT gate, and a second NOT gate; a second battery is connected to the D port of the input D flip-flop, the Q port of the input D flip-flop is connected to the input of the first NOT gate, and the output of the first NOT gate is connected to the input of the second NOT gate.

[0026] The trigger shift circuit includes: a first AND gate, a second AND gate, an OR gate, and a D flip-flop;

[0027] In each trigger shift circuit, the second input of the first AND gate is connected to the output of the second NOT gate; the first input of the second AND gate is connected between the first NOT gate and the second NOT gate; the second input of the second AND gate serves as the buffer value input; the outputs of the first AND gate and the second AND gate are respectively connected to the two inputs of the OR gate; the output of the OR gate is connected to the D terminal of the D flip-flop; and the CP terminal of the D flip-flop in each trigger shift circuit is connected to the CP clock port.

[0028] In the trigger shift circuit located at the first stage: the first input terminal of the first AND gate serves as the serial input port;

[0029] In the trigger shift circuit located in the middle position: the first input terminal of the first AND gate is connected to the Q terminal of the D flip-flop in the previous stage trigger circuit;

[0030] In the final stage of the trigger-shift circuit: the Q terminal of the D flip-flop serves as the serial output port.

[0031] A further optimized solution is to have each main control module correspond to one or more measurement and transmission sub-modules.

[0032] A further optimized solution is that both the main module and the sub-modules include: a power line interface, a signal line interface, a control line interface, a ground line interface, and a status switching line interface.

[0033] A further optimized solution is that the main control module also includes a microcontroller, a display screen, and operation buttons; the display screen is used to display measurement commands, charging commands, or measurement data; the microcontroller is connected to the display screen and operation buttons.

[0034] This solution also provides a cascaded battery pack voltage monitoring system, including the aforementioned cascaded battery pack voltage monitoring device.

[0035] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0036] This embodiment provides a cascaded battery pack voltage monitoring device and system. Based on traditional battery voltage measurement technology, the device structure is improved. Through the cooperation of the main control module and the measurement transmission sub-module, adjacent measurement transmission sub-modules are cascaded without the need for other wiring, which facilitates maintenance and repair. Moreover, one main control module can control multiple measurement transmission sub-modules, which greatly saves measurement costs. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a schematic diagram of a cascaded battery pack voltage monitoring device.

[0039] Figure 2 This is a schematic diagram of the measurement transmission module structure;

[0040] Figure 3 This is a schematic diagram of the shifter chip structure. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0042] Traditional battery voltage measurement techniques are complex to wire, inconvenient to maintain and repair, and require each battery to be equipped with a wireless communication module, resulting in high costs and low applicability. In view of this, this solution provides the following embodiments to solve the above-mentioned technical problems.

[0043] Example 1

[0044] This embodiment provides a cascaded battery pack voltage monitoring device, such as... Figure 1 As shown, it includes:

[0045] The main control module is used to send measurement commands or charging commands to the measurement and transmission sub-module, and also to charge the measurement and transmission sub-module.

[0046] The measurement transmission submodule is used to execute measurement commands or charging commands, and also to transmit measurement data to the main control module; each battery is equipped with one measurement transmission submodule, and adjacent measurement transmission submodules are cascaded; the main control module and the measurement transmission submodules are detachably electrically connected. The cascading can be understood as adjacent measurement transmission submodules being connected in series.

[0047] The main control module includes: a first battery, a microcontroller, a display screen, and operation buttons; the display screen is used to display measurement commands, charging commands, or measurement data; the microcontroller is connected to the display screen and operation buttons.

[0048] The main control module includes a first battery, enabling operation without an external power source. This first battery can also charge the second batteries within multiple measurement and transmission sub-modules. The main control module has two operating states: charging the second batteries in the measurement and transmission sub-modules and voltage measurement. Switching between these states is controlled by a button on the main control module that operates the microcontroller.

[0049] like Figure 2 As shown, the measurement and transmission sub-module includes: a charging circuit, a second battery, an analog-to-digital converter chip, a shifter chip, and a relay chip;

[0050] The second battery is used to power the analog-to-digital converter chip, the shifter chip, and the relay chip.

[0051] The relay chip is used to isolate the first battery from the storage battery; the relay chip is also used to isolate the storage battery from the measurement and transmission submodule.

[0052] Analog-to-digital converter chips are used to convert measurement data from analog to digital.

[0053] Shifter chips are used to transmit measurement data after analog-to-digital conversion; shifter chips of adjacent measurement transmission sub-modules are cascaded.

[0054] The serial input and serial output ports of the shifter chips are connected to the serial output port of the next-stage shifter chip and the serial input port of the previous-stage shifter chip, respectively; the CP clock ports of each shifter chip are cascaded and connected to the clock control center; the GND ground ports of each shifter chip are cascaded and connected to the clock control center; the VCC power supply ports of each shifter chip are cascaded.

[0055] The VCC power port of the shifter chip is also connected to the charging circuit, analog-to-digital converter chip and battery through a relay chip;

[0056] The shifter chip's GND ground port is also connected to the charging circuit via a relay chip.

[0057] The main control module can be detachably electrically connected to any measurement and transmission sub-module via an interface. When the main control module is electrically connected to the measurement and transmission sub-module, the first battery in the main control module is connected to the charging circuit, and the first battery charges the second battery of each measurement and transmission sub-module.

[0058] The relay chip includes: a first relay, a second relay, a third relay, a fourth relay, a fifth relay, and a sixth relay;

[0059] The VCC power supply terminal of the shifter chip is connected to the positive terminal of the charging circuit through the switch of the first relay, and the GND ground terminal of the shifter chip is connected to the negative terminal of the charging circuit through the switch of the second relay.

[0060] The positive terminal of the charging circuit is connected to the VCC power supply terminal of the analog-to-digital converter chip via the switch of the third relay; the GND ground terminal of the analog-to-digital converter chip is connected to the negative terminal of the charging circuit.

[0061] The number of digital output terminals of the analog-to-digital converter chip corresponds one-to-one with the number of parallel input terminals of the shifter chip. Each digital output terminal of the analog-to-digital converter chip is connected in series with the coil of a fourth relay and then connected to the negative terminal of the charging circuit. Each parallel input terminal of the shifter chip is connected in series with the switch of a fourth relay and then connected to the VCC power supply terminal of the shifter chip.

[0062] The analog signal input positive terminal of the analog-to-digital converter chip is connected to the positive terminal of the battery after being connected in series with the switch of the fifth relay, and the analog signal input negative terminal of the analog-to-digital converter chip is connected to the negative terminal of the battery after being connected in series with the switch of the sixth relay.

[0063] The coils of the first, second, third, fifth, and sixth relays are grounded at one end and connected to the second battery at the other end.

[0064] When no measurement is being performed, the switches of the first and second relays are closed, and the battery inside the measurement transmission module is charged; when a measurement is being performed, the switches of the first and second relays are open, the third relay K3 is closed, and the second battery inside the measurement transmission module supplies power to the analog-to-digital converter chip.

[0065] like Figure 3 As shown, the shifter chip includes: an input trigger circuit, and multiple trigger shift circuits with the same circuit structure, all of which are cascaded; in this embodiment, there are 8 trigger shift circuits from A to G; after the first rising edge of the clock signal CP arrives, the values ​​of the eight ports AH are buffered in the D flip-flops, and in each subsequent clock cycle, all data are serially shifted.

[0066] The input trigger circuit includes: an input D flip-flop, a first NOT gate, and a second NOT gate; a second battery is connected to the D port of the input D flip-flop, the Q port of the input D flip-flop is connected to the input of the first NOT gate, and the output of the first NOT gate is connected to the input of the second NOT gate.

[0067] The trigger shift circuit includes: a first AND gate, a second AND gate, an OR gate, and a D flip-flop;

[0068] In each trigger shift circuit, the second input of the first AND gate is connected to the output of the second NOT gate; the first input of the second AND gate is connected between the first NOT gate and the second NOT gate; the second input of the second AND gate serves as the buffer value input; the outputs of the first AND gate and the second AND gate are respectively connected to the two inputs of the OR gate; the output of the OR gate is connected to the D terminal of the D flip-flop; and the CP terminal of the D flip-flop in each trigger shift circuit is connected to the CP clock port.

[0069] In the trigger shift circuit located at the first stage: the first input terminal of the first AND gate serves as the serial input port;

[0070] In the trigger shift circuit located in the middle position: the first input terminal of the first AND gate is connected to the Q terminal of the D flip-flop in the previous stage trigger circuit;

[0071] In the final stage of the trigger-shift circuit: the Q terminal of the D flip-flop serves as the serial output port.

[0072] Each main control module corresponds to one or more measurement and transmission sub-modules.

[0073] Both the main module and the sub-modules include: a power line interface, a signal line interface, a control line interface, a ground line interface, and a state switching line interface. The control line is used to start the shifter, and the state switching line controls the relay to switch the battery charging state and voltage measurement state of the measurement and transmission sub-module. The power line, signal line, control line, ground line, and state switching line of the measurement and transmission sub-module are integrated together, with five-hole plugs at both ends. The power line and ground line are thicker to ensure power supply to multiple sub-modules.

[0074] The main control module also includes a microcontroller, a display screen, and operation buttons; the display screen is used to display measurement commands, charging commands, or measurement data; the microcontroller is connected to the display screen and operation buttons. The display module is controlled by the microcontroller and has functions such as battery quantity selection, historical record viewing, and module working status viewing.

[0075] Example 2

[0076] This embodiment provides a cascaded battery pack voltage monitoring system, including the cascaded battery pack voltage monitoring device described in Embodiment 1.

[0077] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cascaded battery pack voltage monitoring device, characterized in that, include: The main control module is used to send measurement commands or charging commands to the measurement and transmission sub-module, and also to charge the measurement and transmission sub-module. The measurement transmission submodule is used to execute measurement commands or charging commands, and also to transmit measurement data to the main control module; each battery is equipped with one measurement transmission submodule, and adjacent measurement transmission submodules are cascaded; the main control module and the measurement transmission submodule are detachably electrically connected.

2. The cascaded battery pack voltage monitoring device according to claim 1, characterized in that, The main control module includes a first battery; The measurement and transmission sub-module includes: a charging circuit, a second battery, an analog-to-digital converter chip, a shifter chip, and a relay chip; The second battery is used to power the analog-to-digital converter chip, the shifter chip, and the relay chip; The relay chip is used to isolate the first battery from the storage battery; the relay chip is also used to isolate the storage battery from the measurement and transmission submodule; The analog-to-digital converter chip is used to perform analog-to-digital conversion on the measurement data; The shifter chip is used to transmit the measurement data after analog-to-digital conversion; the shifter chips of adjacent measurement transmission sub-modules are cascaded.

3. The cascaded battery pack voltage monitoring device according to claim 2, characterized in that, The serial input and serial output ports of the shifter chips are connected to the serial output port of the next-stage shifter chip and the serial input port of the previous-stage shifter chip, respectively; the CP clock ports of each shifter chip are cascaded and connected to the clock control center; the GND ground ports of each shifter chip are cascaded and connected to the clock control center; the VCC power supply ports of each shifter chip are cascaded. The VCC power port of the shifter chip is also connected to the charging circuit, analog-to-digital converter chip and battery through a relay chip; The shifter chip's GND ground port is also connected to the charging circuit via a relay chip.

4. The cascaded battery pack voltage monitoring device according to claim 3, characterized in that, The relay chip includes: a first relay, a second relay, a third relay, a fourth relay, a fifth relay, and a sixth relay; The VCC power supply port of the shifter chip is connected to the positive terminal of the charging circuit through the switch of the first relay, and the GND ground port of the shifter chip is connected to the negative terminal of the charging circuit through the switch of the second relay. The positive terminal of the charging circuit is connected to the VCC power supply terminal of the analog-to-digital converter chip via the switch of the third relay; the GND ground terminal of the analog-to-digital converter chip is connected to the negative terminal of the charging circuit. The number of digital output terminals of the analog-to-digital converter chip corresponds one-to-one with the number of parallel input terminals of the shifter chip. Each digital output terminal of the analog-to-digital converter chip is connected in series with the coil of a fourth relay and then connected to the negative terminal of the charging circuit. Each parallel input terminal of the shifter chip is connected in series with the switch of a fourth relay and then connected to the VCC power supply terminal of the shifter chip. The analog signal input positive terminal of the analog-to-digital converter chip is connected to the positive terminal of the battery after being connected in series with the switch of the fifth relay, and the analog signal input negative terminal of the analog-to-digital converter chip is connected to the negative terminal of the battery after being connected in series with the switch of the sixth relay.

5. The cascaded battery pack voltage monitoring device according to claim 4, characterized in that, The coils of the first, second, third, fifth, and sixth relays are grounded at one end and connected to the second battery at the other end.

6. The cascaded battery pack voltage monitoring device according to claim 3, characterized in that, The shifter chip includes: an input trigger circuit, and multiple trigger shift circuits with the same circuit structure, with each trigger circuit cascaded. The input triggering circuit includes: an input D flip-flop, a first NOT gate, and a second NOT gate; a second battery is connected to the D port of the input D flip-flop, the Q port of the input D flip-flop is connected to the input of the first NOT gate, and the output of the first NOT gate is connected to the input of the second NOT gate. The trigger shift circuit includes: a first AND gate, a second AND gate, an OR gate, and a D flip-flop; In each trigger shift circuit, the second input of the first AND gate is connected to the output of the second NOT gate; the first input of the second AND gate is connected between the first and second NOT gates; the second input of the second AND gate serves as the buffer value input; the outputs of the first and second AND gates are respectively connected to the two inputs of the OR gate; the output of the OR gate is connected to the D terminal of the D flip-flop; the CP terminal of the D flip-flop in each trigger shift circuit is connected to the CP clock port. In the trigger shift circuit located at the first stage: the first input terminal of the first AND gate serves as the serial input port; In the trigger shift circuit located in the middle position: the first input terminal of the first AND gate is connected to the Q terminal of the D flip-flop in the previous stage trigger circuit; In the final stage of the trigger-shift circuit: the Q terminal of the D flip-flop serves as the serial output port.

7. The cascaded battery pack voltage monitoring device according to claim 1, characterized in that, Each main control module corresponds to one or more measurement and transmission sub-modules.

8. The cascaded battery pack voltage monitoring device according to claim 7, characterized in that, Both the main control module and the measurement and transmission sub-module include: a power line interface, a signal line interface, a control line interface, a ground line interface, and a status switching line interface.

9. A cascaded battery pack voltage monitoring device according to claim 2, characterized in that, The main control module also includes a microcontroller, a display screen, and operation buttons; the display screen is used to display measurement commands, charging commands, or measurement data; the microcontroller is connected to the display screen and operation buttons.

10. A cascaded battery pack voltage monitoring system, characterized in that, The device includes a cascaded battery pack voltage monitoring device as described in any one of claims 1-9.

Images