Battery pack discharge detection device and system

Abstract

The application discloses a battery pack discharge detection device and system, which comprises a signal output module, a power consumption module and a monitoring module, wherein the detection signal output end and the control signal output end of the signal output module are electrically connected with the detection signal input end of the power consumption module and the control signal input end of the monitoring module one by one, the power input end of the monitoring module is electrically connected with the battery pack, and the power output end of the monitoring module is electrically connected with the power input end of the power consumption module; the signal output module is used for generating detection signals and control signals, the monitoring module is used for connecting the power supply of the battery pack to the power consumption module through the control signals, the power consumption module is used for connecting the power supply of the battery pack and a load matched with the power supply level of the battery pack to form a power consumption loop according to the detection signals, and the monitoring module outputs an alarm signal when the power supply voltage value is reduced to a preset standard value, so that manual monitoring is not needed, and the detection efficiency and the detection accuracy are improved.

Description

Technical Field

[0001] This invention belongs to the field of battery discharge detection technology, specifically relating to a battery pack discharge detection device and system. Background Technology

[0002] Nuclear power plants are equipped with battery banks of various voltage levels, such as 48V, 110V, and 220V, which power the plant's control and display equipment. Battery banks are devices with a limited lifespan; their charge storage capacity gradually decreases over time. To verify the charge storage capacity of the battery banks, a discharge test is conducted during maintenance work at the nuclear power plant to confirm whether their charge storage capacity remains within the specified range.

[0003] Currently, when performing discharge maintenance on battery banks, a load vehicle matching the battery bank's voltage level is required. A dedicated cable connects the battery bank to the load vehicle, and the power is selected via the load vehicle's power selection circuit breaker. Simultaneously, workers monitor the discharge current using a DC clamp meter and the battery bank voltage using a multimeter. The discharge maintenance is terminated when the voltage drops to the discharge termination standard voltage. This reliance on multimeters and ammeters increases the complexity of the maintenance work. Furthermore, inaccurate monitoring by personnel can reduce the accuracy of battery discharge testing and even damage the battery bank, directly impacting work efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a battery pack discharge detection device and system, the main purpose of which is to solve the problems of cumbersome operation and low detection accuracy of existing battery pack discharge detection devices when performing battery pack detection.

[0005] To address the aforementioned problems, this application provides a battery pack discharge detection device, which includes a power supply module, a signal output module, a power consumption module, and a monitoring module.

[0006] The power input terminal of the power module is electrically connected to an AC power source. The power output terminal of the power module is electrically connected to the power input terminal of the signal output module and the first power input terminal of the monitoring module, respectively. The detection signal output terminal of the signal output module is electrically connected to the detection signal input terminal of the power consumption module. The control signal output terminal of the signal output module is electrically connected to the control signal input terminal of the monitoring module. The second power input terminal of the monitoring module is electrically connected to the power output terminal of the battery pack. The control signal output terminal of the monitoring module is electrically connected to the control signal input terminal of the signal output module. The alarm signal output terminal of the monitoring module is electrically connected to the alarm signal input terminal of the signal output module. The power output terminal of the monitoring module is also electrically connected to the power input terminal of the power consumption module.

[0007] The power supply module provides power to the signal output module, which generates detection and control signals. The monitoring module connects the power supply of the battery pack to the power consumption module via the control signal. The power consumption module connects the power supply of the battery pack to a load matching the power rating of the battery pack to form a power consumption loop based on the detection signal. The monitoring module also monitors the power supply voltage of the battery pack and outputs an alarm signal when the power supply voltage drops to a preset standard value.

[0008] Optionally, the signal output module includes a first signal output branch, a second signal output branch, and a third signal output branch. The first signal output branch includes a first switch and a first contactor; the second signal output branch includes a second contactor; and the third signal output branch includes a third contactor. The monitoring module includes a first voltage relay, a second voltage relay, and a third voltage relay.

[0009] The circuit that connects the first switch and the first normally open contact of the first contactor in parallel is connected in series with the coil of the first contactor, the first normally closed contact of the second contactor, the first normally closed contact of the third contactor, and the normally closed contact of the first voltage relay, so that the first normally open contact of the first contactor and the coil of the first contactor are connected in series to the power output terminal of the power module to form a self-holding circuit.

[0010] Optionally, the second signal output branch further includes a second switch, and the third signal output branch further includes a third switch, wherein,

[0011] The circuit in which the second switch and the first normally open contact of the second contactor are connected in parallel is connected in series with the coil of the second contactor, the first normally closed contact of the first contactor, the second normally closed contact of the third contactor and the normally closed contact of the second voltage relay, so that the first normally open contact of the second contactor and the coil of the second contactor are connected in series to the power output terminal of the power module to form a self-holding circuit.

[0012] The circuit in which the third switch is connected in parallel with the first normally open contact of the third contactor is connected in series with the coil of the third contactor, the second normally closed contact of the first contactor, the second normally closed contact of the second contactor, and the normally closed contact of the third voltage relay, so that the first normally open contact of the third contactor and the coil of the third contactor are connected in series to the power output terminal of the power module to form a self-holding circuit.

[0013] Optionally, the signal output module further includes a timing unit and an alarm unit, wherein the timing unit includes a timer and the alarm unit includes a buzzer.

[0014] The circuit in which the second normally open contact of the first contactor, the second normally open contact of the second contactor, and the second normally open contact of the third contactor are connected in parallel is connected in series with the timer and connected to the power output terminal of the power module.

[0015] The circuit in which the normally open contacts of the first voltage relay, the second voltage relay, and the third voltage relay are connected in parallel is connected in series with the buzzer and connected to the power output terminal of the power module.

[0016] Optionally, the signal output module further includes a control signal output branch, which includes a first current-limiting resistor, a second current-limiting resistor, and an adjustable resistor, wherein...

[0017] The first end of the first current-limiting resistor is electrically connected to the positive output terminal of the power supply module, the second end of the first current-limiting resistor is electrically connected to the first end of the adjustable resistor, the second end of the adjustable resistor is electrically connected to the first end of the second current-limiting resistor, the second end of the second current resistor is electrically connected to the negative output terminal of the power supply module, and the output terminal of the adjustable resistor is electrically connected to the control signal input terminal of the monitoring module.

[0018] Optionally, the monitoring module includes a power input component, a diode, a shunt resistor, a voltmeter, an ammeter, a switching component, a first current-limiting resistor, and a second current-limiting resistor, wherein...

[0019] The positive terminal of the power input component is electrically connected to the positive terminal of the diode and the positive terminal of the battery pack, respectively. The negative terminal of the power input component is electrically connected to the negative input terminal of the power consumption module, the negative terminal of the battery pack, the first terminal of the first voltage relay coil, the first terminal of the second voltage relay coil, the first terminal of the third voltage relay coil, and the negative terminal of the voltmeter.

[0020] The negative terminal of the diode is electrically connected to the second terminal of the first voltage relay coil, the second terminal of the second voltage relay coil, the second terminal of the third voltage relay coil, the first terminal of the shunt resistor, the positive terminal of the voltmeter, and the positive terminal of the ammeter. The second terminal of the shunt resistor is electrically connected to the first terminal of the switching assembly and the negative terminal of the ammeter. The second terminal of the switching assembly is electrically connected to the first terminal of the fourth current-limiting resistor, the positive input terminal of the power consumption module, and the negative output terminal of the power module. The first terminal of the third current-limiting resistor is electrically connected to the control signal output terminal of the signal output module. The second terminal of the third current-limiting resistor is electrically connected to the control terminal of the switching assembly and the second terminal of the fourth current-limiting resistor.

[0021] Optionally, the power consumption module includes a first high-power resistor, a second high-power resistor, a third high-power resistor, and a fourth high-power resistor, wherein,

[0022] The first end of the fourth high-power resistor is electrically connected to the first end of the third normally open contact of the first contactor, the first end of the third normally open contact of the second contactor, and the first end of the third normally open contact of the third contactor. The second end of the fourth high-power resistor is electrically connected to the first end of the fourth normally open contact of the third contactor and the first end of the third high-power resistor. The second end of the third high-power resistor is electrically connected to the first end of the fifth normally open contact of the third contactor, the first end of the fourth normally open contact of the second contactor, and the first end of the second high-power resistor. The second end of the second high-power resistor is electrically connected to the first end of the sixth normally open contact of the third contactor and the first end of the first high-power resistor. The second end of the first high-power resistor is electrically connected to the negative terminal of the access component.

[0023] Furthermore, the second end of the third normally open contact of the first contactor, the second end of the fourth normally open contact of the second contactor, the second end of the fourth normally open contact of the third contactor, the second end of the fifth normally open contact, and the second end of the sixth normally open contact are respectively electrically connected to the second end of the switch assembly, and the second end of the third normally open contact of the second contactor and the second end of the third normally open contact of the third contactor are respectively electrically connected to the negative terminal of the power supply access assembly.

[0024] Optionally, the power module includes a circuit breaker, a transformer, a rectifier bridge, and a power switch, wherein,

[0025] The first terminal of the circuit breaker is electrically connected to the AC power supply, the second terminal of the circuit breaker is electrically connected to the input terminal of the transformer, the output terminal of the transformer is electrically connected to the input terminal of the rectifier bridge, the positive output terminal of the rectifier bridge is electrically connected to the first terminal of the power switch, the second terminal of the power switch is electrically connected to the positive input terminal of the power supply of the signal output module, and the negative output terminal of the rectifier bridge is electrically connected to the negative input terminal of the power supply of the signal output module and the first negative input terminal of the power supply of the monitoring module, respectively.

[0026] This application also provides a battery pack discharge detection system, the system including a housing and the aforementioned battery pack discharge detection device.

[0027] Optionally, the enclosure is equipped with a voltmeter, an ammeter, a timer, a power switch, a first switch, a second switch, a third switch, a first indicator light, a second indicator light, a third indicator light, and a power input component.

[0028] The beneficial effects of this application are as follows: The battery pack discharge detection device provided by this invention connects the battery pack to a monitoring module. The signal output module outputs a control signal to the monitoring module and a detection signal to the power consumption module. After receiving the control signal, the monitoring module transmits the battery power to the power consumption module. The power consumption module forms a load that matches the battery power according to the detection signal. The load and the battery power are connected to form a power consumption loop. When the battery voltage drops to a preset voltage value, the monitoring module outputs an alarm signal to the signal output module. The signal output module alarms according to the alarm signal. No manual monitoring is required, which improves the detection efficiency and accuracy. Furthermore, by forming different loads through different detection signals, one detection device can detect battery packs of different grades, avoiding the need to prepare multiple loads and saving detection costs.

[0029] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic diagram of the structural connection of a battery pack discharge detection device, which is an exemplary embodiment of the present invention;

[0032] Figure 2 A circuit connection diagram of a battery pack discharge detection device, which is an exemplary embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the appearance of a battery pack discharge detection device, which is an exemplary embodiment of the present invention.

[0034] In the diagram: 12-Power supply module, 14-Signal output module, 16-Power consumption module, 18-Monitoring module, 20-AC power supply, 30-Battery pack, QF-Circuit breaker, T1-Transformer, D1-Diode, D2-Rectifier bridge, AN1-Power switch, AN2-First switch, AN3-Second switch, AN4-Third switch, K1-First contactor, K2-Second contactor, K3-Third contactor, XU1-First voltage relay, XU2-Second voltage relay, XU3-Third voltage relay, RS1-First high-power resistor, RS2-Second high-power resistor, RS3-Third high-power resistor, RS4-Fourth high-power resistor, SPK-Buzzer. Detailed Implementation

[0035] To overcome the deficiencies in the prior art, the present invention provides a battery pack discharge detection device. To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] In one embodiment, such as Figure 1 As shown, this application provides a battery pack 30 discharge detection device, which includes a power module 12, a signal output module 14, a power consumption module 16, and a monitoring module 18, wherein...

[0037] The power input terminal of the power module 12 is electrically connected to the AC power supply 20. The power output terminal of the power module 12 is electrically connected to the power input terminal of the signal output module 14 and the first power input terminal of the monitoring module 18, respectively. The detection signal output terminal of the signal output module 14 is electrically connected to the detection signal input terminal of the power consumption module 16. The control signal output terminal of the signal output module 14 is electrically connected to the control signal input terminal of the monitoring module 18. The second power input terminal of the monitoring module 18 is electrically connected to the power output terminal of the battery pack 30. The control signal output terminal of the monitoring module 18 is electrically connected to the control signal input terminal of the signal output module 14. The alarm signal output terminal of the monitoring module 18 is electrically connected to the alarm signal input terminal of the signal output module 14. The power output terminal of the monitoring module 18 is also electrically connected to the power input terminal of the power consumption module 16.

[0038] The power module 12 provides power to the signal output module 14, which generates detection and control signals. The monitoring module 18 connects the power supply of the battery pack 30 to the power consumption module 16 via the control signal. The power consumption module 16 connects the power supply of the battery pack 30 and a load matching the power level of the battery pack 30 to form a power consumption loop according to the detection signal. The monitoring module 18 also monitors the power supply voltage of the battery pack 30 and outputs an alarm signal when the power supply voltage drops to a preset standard value.

[0039] Specifically, an AC power source is connected to a power module, which converts the AC power to DC power and outputs the DC power to a signal output module. After the signal output module is connected to the DC power source, it receives a trigger action and generates detection and control signals based on the trigger action. The detection signal is sent to a power consumption module, and the control signal is sent to a monitoring module. After the battery pack's power is connected to the monitoring module, the monitoring module monitors the battery pack's power voltage. Upon receiving the control signal, the monitoring module transmits the battery pack's power to the power consumption module. The power consumption module forms a corresponding load based on the detection signal, and the load is connected to the battery's power supply to form a power consumption loop. When the battery voltage drops to a preset voltage value, the monitoring module outputs an alarm signal to the signal output module. Upon receiving the alarm signal, the signal output module executes an alarm, indicating that the battery has discharged and its voltage has dropped to the corresponding standard voltage value. For example, when a 220V battery pack is tested, a corresponding operation is triggered to output a detection signal that matches 220V. The power signal module then forms a load that matches the 220V battery based on this detection signal. Similarly, when a 110V battery pack is tested, a corresponding operation is triggered to output a detection signal that matches 110V. The power signal module then forms a load that matches the 110V battery based on this detection signal.

[0040] Compared with existing technologies, the present invention provides a battery pack discharge detection device that connects the battery pack to a monitoring module. A signal output module outputs a control signal to the monitoring module and a detection signal to a power consumption module. Upon receiving the control signal, the monitoring module transmits the battery power to the power consumption module. The power consumption module forms a load matching the battery power based on the detection signal. The load and the battery power are connected to form a power consumption loop. When the battery voltage drops to a preset voltage value, the monitoring module outputs an alarm signal to the signal output module, which then triggers an alarm. This eliminates the need for manual monitoring, improving detection efficiency and accuracy. Furthermore, by forming different loads using different detection signals, a single detection device can detect battery packs of different grades, avoiding the need for multiple loads and saving detection costs.

[0041] In one embodiment, such as Figure 2 As shown, the signal output module 14 includes a first signal output branch, a second signal output branch, and a third signal output branch. The first signal output branch includes a first switch AN2 and a first contactor K1, the second signal output branch includes a second contactor K2, and the third signal output branch includes a third contactor K3. The monitoring module 18 includes a first voltage relay XU1, a second voltage relay XU2, and a third voltage relay XU3.

[0042] The circuit that connects the first normally open contact of the first switch AN2 in parallel with the first normally open contact of the first contactor K1 is connected in series with the coil of the first contactor K1, the first normally closed contact of the second contactor K2, the first normally closed contact of the third contactor K3, and the normally closed contact of the first voltage relay XU1, so that the first normally open contact of the first contactor K1 and the coil of the first contactor K1 are connected in series at the power output terminal of the power module 12 to form a self-holding circuit.

[0043] Specifically, the voltage level of the battery pack to be discharged is confirmed to be 220V, and the discharge termination voltage is set according to the requirements of the document using the first voltage relay. The positive and negative terminals of the battery pack to be discharged are connected to the positive battery power input terminal of this device. Pressing the first switch opens the DC power supply from the power module. The power supply then flows through the closed first switch, the first contactor coil, the first normally closed contact of the second contactor, the first normally closed contact of the third contactor, and the normally closed contact of the first voltage relay to form a circuit. The first contactor coil is energized, and all normally open contacts of the first contactor close, outputting a detection signal.

[0044] In one embodiment, such as Figure 2 As shown, the second signal output branch also includes a second switch AN3, and the third signal output branch also includes a third switch AN4, wherein...

[0045] The circuit in which the second switch AN3 and the first normally open contact of the second contactor K2 are connected in parallel is connected in series with the coil of the second contactor K2, the first normally closed contact of the first contactor K1, the second normally closed contact of the third contactor K3, and the normally closed contact of the second voltage relay XU2, so that the first normally open contact of the second contactor K2 and the coil of the second contactor K2 are connected in series at the power output terminal of the power module 12 to form a self-holding circuit.

[0046] The circuit in which the third switch AN4 and the first normally open contact of the third contactor K3 are connected in parallel is connected in series with the coil of the third contactor K3, the second normally closed contact of the first contactor K1, the second normally closed contact of the second contactor K2, and the normally closed contact of the third voltage relay XU3, so that the first normally open contact of the third contactor K3 and the coil of the third contactor K3 are connected in series at the power output terminal of the power module 12 to form a self-holding circuit.

[0047] Specifically, confirm that the voltage level of the battery pack to be discharged is 110V, and set the discharge termination voltage according to the document requirements using the second voltage relay. Connect the positive and negative terminals of the battery pack to be discharged to the positive battery power input terminal of this device. Press the second switch, and the DC power supply from the power module will pass through the closed second switch, the second contactor coil, the first normally closed contact of the first contactor, the second normally closed contact of the third contactor, and the normally closed contact of the second voltage relay to form a circuit. The second contactor coil will be energized, and all normally open contacts of the second contactor will close, outputting a detection signal.

[0048] Specifically, confirm that the voltage level of the battery pack to be discharged is 48V, and set the discharge termination voltage according to the document requirements using the third voltage relay. Connect the positive and negative terminals of the battery pack to be discharged to the positive battery power input terminal of this device. Press the third switch, and the DC power supply from the power module will flow through the closed third switch, through the third contactor coil, through the second normally closed contact of the first contactor, through the second normally closed contact of the second contactor, and through the normally closed contact of the third voltage relay to form a circuit. The third contactor coil will be energized, and all normally open contacts of the third contactor will close, outputting a detection signal.

[0049] In one embodiment, such as Figure 2 As shown, the signal output module 14 also includes a timing unit and an alarm unit. The timing unit includes a timer, and the alarm unit includes a buzzer SPK.

[0050] The circuit in which the second normally open contact of the first contactor K1, the second normally open contact of the second contactor K2, and the second normally open contact of the third contactor K3 are connected in parallel is connected in series with the timer and connected to the power output terminal of the power module 12.

[0051] The circuit in which the normally open contacts of the first voltage relay XU1, the second voltage relay XU2, and the third voltage relay XU3 are connected in parallel is connected in series with the buzzer SPK and connected to the power output terminal of the power module 12.

[0052] Specifically, when the first switch is pressed, the positive terminal of the power supply module forms a circuit through the fourth normally open contact of the closed first contactor, through the current-limiting resistor, and through the first selection indicator light, illuminating the first selection indicator light and initiating the 220V discharge of the battery pack. Simultaneously, the positive terminal of the power supply module forms a circuit through the second contact of the closed first contactor and through the timer, initiating the battery discharge timing.

[0053] The battery pack voltage slowly decreases until the first voltage relay activates. The normally closed contact of the first voltage relay opens, cutting off the power supply circuit to the first contactor coil and the battery discharge circuit. The first selection indicator light goes out, and the battery discharge process terminates. Simultaneously, the normally open contact of the first voltage relay closes, and the buzzer sounds a warning tone, indicating that the 220V battery pack discharge is complete.

[0054] When the second switch is pressed, the positive terminal of the power supply module forms a circuit through the fifth normally open contact of the closed second contactor, through the current-limiting resistor, and through the second selection indicator light, illuminating the second selection indicator light and initiating the 110V discharge of the battery pack. Simultaneously, the positive terminal of the power supply module forms a circuit through the second contact of the closed second contactor and through the timer, initiating the battery discharge timing.

[0055] The battery pack voltage slowly decreases until the second voltage relay activates. The normally closed contact of the second voltage relay opens, cutting off the power supply circuit to the second contactor coil and the battery discharge circuit. The second selection indicator light goes out, and the battery discharge process terminates. Simultaneously, the normally open contact of the second voltage relay closes, and the buzzer sounds a warning tone, indicating that the 110V battery pack discharge is complete.

[0056] When the third switch is pressed, the positive terminal of the power supply module forms a circuit through the fifth normally open contact of the closed third contactor, through the current-limiting resistor, and through the third selection indicator light, illuminating the third selection indicator light and initiating the 48V discharge of the battery pack. Simultaneously, the positive terminal of the power supply module forms a circuit through the second contact of the closed third contactor and through the timer, initiating the battery discharge timing.

[0057] The battery pack voltage slowly decreases until the third voltage relay activates. The normally closed contact of the third voltage relay opens, cutting off the power supply circuit to the third contactor coil and the battery discharge circuit. The third selection indicator light goes out, and the battery discharge process terminates. Simultaneously, the normally open contact of the third voltage relay closes, and the buzzer sounds a warning tone, indicating that the 48V battery pack discharge is complete.

[0058] In one embodiment, such as Figure 2 As shown, the signal output module 14 also includes a control signal output branch, which includes a first current-limiting resistor, a second current-limiting resistor, and an adjustable resistor.

[0059] The first end of the first current-limiting resistor is electrically connected to the positive output terminal of the power supply module 12. The second end of the first current-limiting resistor is electrically connected to the first end of the adjustable resistor. The second end of the adjustable resistor is electrically connected to the first end of the second current-limiting resistor. The second end of the second current resistor is electrically connected to the negative output terminal of the power supply module 12. The output terminal of the adjustable resistor is electrically connected to the control signal input terminal of the monitoring module 18.

[0060] Specifically, after pressing the power switch, rotate the adjustable resistor counterclockwise to preset the current to the minimum. When the first, second, or third switch is pressed, adjust the current adjustable resistor clockwise and observe the ammeter on the monitoring module until the ammeter displays a current value consistent with the discharge document requirements, allowing the battery pack to discharge at the specified current.

[0061] In one embodiment, such as Figure 2 As shown, the monitoring module 18 includes a power input component, a diode D1, a shunt resistor, a voltmeter, an ammeter, a switching component, a first current-limiting resistor, and a second current-limiting resistor.

[0062] The positive terminal of the power input component is electrically connected to the positive terminal of diode D1 and the positive terminal of the power supply of battery pack 30, respectively. The negative terminal of the power input component is electrically connected to the negative input terminal of power consumption module 16, the negative terminal of power supply of battery pack 30, the first terminal of the coil of first voltage relay XU1, the first terminal of the coil of second voltage relay XU2, the first terminal of the coil of third voltage relay XU3, and the negative terminal of voltmeter.

[0063] The negative terminal of diode D1 is electrically connected to the second terminal of the coil of the first voltage relay XU1, the second terminal of the coil of the second voltage relay XU2, the second terminal of the coil of the third voltage relay XU3, the first terminal of the shunt resistor, the positive terminal of the voltmeter, and the positive terminal of the ammeter. The second terminal of the shunt resistor is electrically connected to the first terminal of the switching assembly and the negative terminal of the ammeter. The second terminal of the switching assembly is electrically connected to the first terminal of the fourth current-limiting resistor, the positive input terminal of the power supply of the power consumption module 16, and the negative output terminal of the power supply of the power supply module 12. The first terminal of the third current-limiting resistor is electrically connected to the control signal output terminal of the signal output module 14. The second terminal of the third current-limiting resistor is electrically connected to the control terminal of the switching assembly and the second terminal of the fourth current-limiting resistor.

[0064] Specifically, confirm the voltage level of the battery pack to be discharged and set the discharge termination voltage according to the document requirements using the corresponding voltage relay. When connecting the positive and negative terminals of the battery pack to be discharged to the power input component of this device, the introduced battery voltage is collected by the voltage relay via the diode and simultaneously displayed on the voltmeter. Confirm that the voltage value displayed on the voltmeter matches the current battery pack voltage level. Rotate the adjustable resistor counterclockwise to preset the current to the minimum state. Press the corresponding switch, such as the second switch. At this time, the discharge circuit current passes through the diode, the shunt resistor, and the power trimmer (switching assembly) and is output to the power input terminal of the power consumption unit.

[0065] In one embodiment, such as Figure 2 As shown, the power consumption module 16 includes a first high-power resistor RS1, a second high-power resistor RS2, a third high-power resistor RS3, and a fourth high-power resistor RS4, wherein...

[0066] The first terminal of the fourth high-power resistor RS4 is electrically connected to the first terminal of the third normally open contact of the first contactor K1, the first terminal of the third normally open contact of the second contactor K2, and the first terminal of the third normally open contact of the third contactor K3. The second terminal of the fourth high-power resistor RS4 is electrically connected to the first terminal of the fourth normally open contact of the third contactor K3 and the first terminal of the third high-power resistor RS3. The second terminal of the third high-power resistor RS3 is electrically connected to the first terminal of the fifth normally open contact of the third contactor K3, the first terminal of the fourth normally open contact of the second contactor K2, and the first terminal of the second high-power resistor RS2. The second terminal of the second high-power resistor RS2 is electrically connected to the first terminal of the sixth normally open contact of the third contactor K3 and the first terminal of the first high-power resistor RS1. The second terminal of the first high-power resistor RS1 is electrically connected to the negative terminal of the connection component.

[0067] Furthermore, the second end of the third normally open contact of the first contactor K1, the second end of the fourth normally open contact of the second contactor K2, the second end of the fourth normally open contact of the third contactor K3, the second end of the fifth normally open contact, and the second end of the sixth normally open contact are electrically connected to the second end of the switching assembly, and the second end of the third normally open contact of the second contactor K2 and the second end of the third normally open contact of the third contactor K3 are electrically connected to the negative terminal of the power supply access assembly.

[0068] Specifically, when the first switch is pressed, the coil of the first contactor is energized, the normally open contact of the first contactor closes, and the power supply of the battery is also connected to this device. At this time, the discharge circuit current passes through the diode, through the shunt resistor, through the power trimmer (switching assembly), and through the closed third normally open contact of the first contactor to form a circuit with the first high-power resistor, the second high-power resistor, the third high-power resistor, and the fourth high-power resistor (at this time, the first high-power resistor, the second high-power resistor, the third high-power resistor, and the fourth high-power resistor are all connected in series, which meets the 220V discharge requirement).

[0069] When the second switch is pressed, the coil of the second contactor is energized, the normally open contact of the second contactor closes, and the power supply of the battery is also connected to this device. At this time, the discharge circuit current passes through the diode, the shunt resistor, the power trimmer (switching assembly), and the closed third normally open contact of the second contactor to the first high-power resistor, the second high-power resistor, the third high-power resistor, and the fourth high-power resistor to form a circuit (at this time, the relationship of the first high-power resistor, the second high-power resistor, the third high-power resistor, and the fourth high-power resistor is modified to: the first high-power resistor and the second high-power resistor are connected in series, the third high-power resistor and the fourth high-power resistor are connected in series, and then connected in parallel, which meets the 110V discharge requirement).

[0070] When the third switch is pressed, the coil of the third contactor is energized, the normally open contact of the third contactor closes, and the power supply of the battery is also connected to this device. At this time, the discharge circuit current passes through the diode, through the shunt resistor, through the power trimmer (switching assembly), and through the closed third normally open contact, fourth normally open contact, fifth normally open contact, and sixth normally open contact of the third contactor to the first, second, third, and fourth high-power resistors to form a circuit (at this time, the first, second, third, and fourth high-power resistors are all connected in parallel, which meets the 48V discharge requirement).

[0071] In one embodiment, such as Figure 2 As shown, the power module 12 includes a circuit breaker QF, a transformer T1, a rectifier bridge D2, and a power switch AN1.

[0072] The first terminal of circuit breaker QF is electrically connected to AC power supply 20, the second terminal of circuit breaker QF is electrically connected to the input terminal of transformer T1, the output terminal of transformer T1 is electrically connected to the input terminal of rectifier bridge D2, the positive output terminal of rectifier bridge D2 is electrically connected to the first terminal of power switch AN1, the second terminal of power switch AN1 is electrically connected to the positive input terminal of power supply of signal output module 14, and the negative output terminal of rectifier bridge D2 is electrically connected to the negative input terminal of power supply of signal output module 14 and the first negative input terminal of power supply of monitoring module 18, respectively.

[0073] Specifically, insert the AC power cord into the AC power input socket of this device, connect the AC power input socket to the circuit breaker, and close the circuit breaker. External power is applied to the primary side of the transformer via the circuit breaker and fuse. At the same time, the secondary side of the transformer outputs AC voltage. This 24V AC voltage is rectified by the rectifier bridge and filtered by the capacitor to become DC voltage. This DC voltage passes through the current-limiting resistor and forms a circuit through the power indicator light, illuminating the power indicator light. This indicates that the device's control power supply is working normally, and the entire unit enters standby mode.

[0074] In one embodiment, the battery pack discharge detection further includes a whole-machine heat dissipation unit, which includes a cooling fan. External AC power is connected to a circuit via a fuse, the cooling fan, and the closed normally open contacts of the first, second, or third contactors. Heat inside the entire chassis is promptly discharged through multiple ventilation holes.

[0075] This application also provides a battery pack discharge detection system, the system including a housing and the aforementioned battery pack discharge detection device.

[0076] In one embodiment, the enclosure is provided with a voltmeter, an ammeter, a timer, a power switch, a first switch, a second switch, a third switch, a first indicator light, a second indicator light, a third indicator light, and a power input component.

[0077] In one embodiment, such as Figure 3 As shown, the enclosure 1 is equipped with a handle, a voltmeter for real-time monitoring of the battery pack voltage, a timer for recording the battery discharge time, an ammeter for real-time monitoring of the discharge current, a power switch for stopping the discharge operation at any time, a 48V selection button (third switch) for selecting the 48V battery pack, a 110V selection button (second switch) for selecting the 110V battery pack, a 220V selection button (first switch) for selecting the 220V battery pack, a 220V selection indicator light, a 110V selection indicator light, a 48V selection indicator light, and a power indicator light, each for displaying its respective status. A battery positive cable interface (positive terminal of the power input component) is for connecting the positive terminal of the battery pack, and a battery negative cable interface (negative terminal of the power input component) is for connecting the negative terminal of the battery pack. An AC power input interface is used to control power input. A circuit breaker is used for power on / off control. Multiple ventilation holes are used for heat dissipation channels. An adjustable resistor is used for fine-tuning the discharge current.

[0078] Working principle and usage of battery pack discharge detection system:

[0079] The first step is to insert the AC power cord into the power socket of this device and simultaneously close the circuit breaker. The external power supply is applied to the primary side of the transformer via the circuit breaker and fuse. At the same time, the secondary side of the transformer outputs an AC voltage of 24V. This 24V AC voltage is rectified by the rectifier bridge and filtered by the capacitor. The filtered DC voltage is then passed through the current-limiting resistor and the power indicator light to form a circuit. The power indicator light is lit, indicating that the control power supply of this device is working normally, and the whole machine enters the standby state.

[0080] The second step is to check the device: the 220V selection indicator light, one 110V selection indicator light, and one 48V selection indicator light are all not lit.

[0081] The third step is to confirm the voltage level of the battery pack to be discharged.

[0082] The fourth step is to connect the positive terminal of the battery pack to be discharged to the positive terminal of the power input component of this device, and connect the negative terminal of the battery pack to be discharged to the positive terminal of the power input component of this device. At this time, the introduced battery voltage is collected by the first voltage relay, the second voltage relay, the third voltage relay and the fourth voltage relay through the diode and simultaneously displayed by the voltmeter.

[0083] Fifth, according to the actual situation (nuclear power plants have various battery packs, and the voltage levels are currently divided into 48V, 110V, and 220V) and relevant document requirements, set the discharge protection voltage (i.e., the battery discharge termination voltage) through the first voltage relay (220V level), the second voltage relay (110V level), and the third voltage relay (48V level).

[0084] 220V Battery Discharge: Confirm the voltage level of the battery pack to be discharged is 220V, and complete the discharge termination voltage setting via the first voltage relay (220V level) according to the document requirements. Connect the positive terminal of the battery pack to be discharged to the positive terminal of the power input component of this device, and connect the negative terminal of the battery pack to the negative terminal of the power input component of this device. The introduced battery voltage is collected by the first voltage relay via the diode and simultaneously displayed by the voltmeter. Confirm that the voltage value displayed on the voltmeter is consistent with the current battery pack voltage level. Rotate the adjustable resistor counterclockwise to preset the current to the minimum state. Press the 220V selection button (first switch). The control power supply forms a circuit through the closed 220V selection button, the coil of the first contactor, the normally closed point of the second contactor, the normally closed point of the third contactor, and the normally closed point of the first voltage relay. The coil of the first contactor is energized, and all normally open points of the first contactor close. At this point, the discharge circuit current flows through the diode, the shunt resistor, the power trimmer (switching assembly), and the normally open contact of the closed first contactor to the first, second, third, and fourth high-power resistors, forming a circuit (at this point, the first, second, third, and fourth high-power resistors are all connected in series, meeting the 220V discharge requirement). Adjust the current trimmer potentiometer clockwise and observe the ammeter until the displayed current value matches the discharge specifications. Simultaneously, the control power supply flows through the normally open contact of the closed first contactor, the current-limiting resistor, and the 220V selection indicator light, illuminating the indicator light and initiating 220V battery discharge. Simultaneously, the control power supply also flows through the normally open contact of the closed first contactor and the timer, starting the battery discharge timing. Simultaneously, the external power supply flows through the fuse, the cooling fan, and the normally open contact of the closed first contactor, ensuring that heat from the entire chassis is promptly dissipated through multiple ventilation holes. As the battery continues to discharge, the battery voltage slowly decreases until the first voltage relay (220V level) activates. The normally closed contact of the first voltage relay opens, cutting off the power supply circuit to the first contactor and the battery discharge circuit. The 220V selection indicator light goes out, and the battery discharge process terminates. Simultaneously, the normally open contact of the first voltage relay closes, and a buzzer sounds, indicating that the 220V battery pack discharge is complete.

[0085] 110V Battery Discharge: Confirm the voltage level of the battery pack to be discharged is 110V, and complete the discharge termination voltage setting via the second voltage relay (110V level) according to the document requirements. Connect the positive terminal of the battery pack to be discharged to the positive terminal of the power input component of this device, and connect the negative terminal of the battery pack to the negative terminal of the power input component of this device. The introduced battery voltage is collected by the second voltage relay via the diode and simultaneously displayed by the voltmeter. Confirm that the voltage value displayed on the voltmeter is consistent with the current battery pack voltage level. Rotate the adjustable resistor counterclockwise to preset the current to the minimum state. Press the 110V selection button (second switch). The control power supply forms a circuit through the closed 110V selection button, the coil of the second contactor, the normally closed point of the first contactor, the normally closed point of the third contactor, and the normally closed point of the second voltage relay. The coil of the second contactor is energized, and all normally open points of the second contactor close. At this point, the discharge circuit current flows through the diode, the shunt resistor, the power trimmer (switching assembly), and the normally open contact of the closed second contactor to the first, second, third, and fourth high-power resistors, forming a circuit. (The relationship between these four resistors is as follows: the first and second high-power resistors are connected in series, the third and fourth are connected in series, and then in parallel, meeting the 110V discharge requirement.) Adjust the current trimmer potentiometer clockwise and observe the ammeter until the current value displayed matches the discharge specifications. Simultaneously, the control power supply flows through the normally open contact of the closed second contactor, the current-limiting resistor, and the 110V selection indicator light, illuminating the 110V selection indicator light and initiating the 110V battery discharge. Simultaneously, the control power supply also flows through the normally open contact of the closed second contactor and the timer, initiating the battery discharge timing. Simultaneously, the external power supply forms a circuit through the fuse, the cooling fan, and the normally open contact of the closed second contactor, allowing heat from the entire chassis to be dissipated promptly through multiple ventilation holes. As discharge continues, the battery pack voltage slowly decreases until the second voltage relay (110V rating) trips. The normally closed contact of the second voltage relay opens, cutting off the power supply circuit to the second contactor and the battery discharge circuit. The 110V selection indicator light goes out, and the battery discharge process terminates. Simultaneously, the normally open contact of the second voltage relay closes, and a buzzer sounds, indicating that the 110V battery pack discharge is complete.

[0086] 48V Battery Discharge: Confirm the voltage level of the battery pack to be discharged is 48V, and complete the discharge termination voltage setting via the third voltage relay (48V level) according to the document requirements. Connect the positive terminal of the battery pack to be discharged to the positive terminal of the power input component of this device, and connect the negative terminal of the battery pack to the negative terminal of the power input component of this device. The introduced battery voltage is collected by the third voltage relay via the diode and simultaneously displayed on the voltmeter. Confirm that the voltage value displayed on the voltmeter is consistent with the current battery pack voltage level. Rotate the adjustable resistor counterclockwise to preset the current to the minimum state. Press the 48V selection button (third switch). The control power supply forms a circuit through the closed 48V selection button, the coil of the third contactor, the normally closed contact of the first contactor, the normally closed contact of the second contactor, and the normally closed contact of the third voltage relay. The coil of the third contactor is energized, and all normally open contacts of the third contactor close. At this point, the discharge circuit current flows through the diode, the shunt resistor, the power trimmer (switching assembly), and the normally open contact of the closed third contactor to the first, second, third, and fourth high-power resistors, forming a circuit (at this point, the first, second, third, and fourth high-power resistors are connected in parallel, meeting the 48V discharge requirement). Adjust the current trimmer potentiometer clockwise and observe the ammeter until the displayed current value matches the discharge specifications. Simultaneously, the control power supply flows through the normally open contact of the closed third contactor, the current-limiting resistor, and the 48V selection indicator light, illuminating the 48V selection indicator light and initiating the 48V battery discharge. Simultaneously, the control power supply also flows through the normally open contact of the closed third contactor and the timer, initiating the battery discharge timing. Simultaneously, the external power supply forms a circuit through the fuse, the cooling fan, and the normally open contact of the closed third contactor, allowing heat inside the chassis to be dissipated promptly through multiple ventilation holes. As discharge continues, the battery pack voltage slowly decreases until the third voltage relay (48V level) trips, the normally closed contact of the second voltage relay opens, the power supply circuit to the third contactor is cut off, the battery discharge circuit is disconnected, the 48V selection indicator light goes out, and the battery discharge process terminates. At the same time, the normally open contact of the third voltage relay closes, the buzzer sounds an alarm, and the 48V battery pack discharge is complete.

[0087] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0088] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0089] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0090] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0091] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0092] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0093] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0094] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A battery pack discharge detection device, characterized in that, The device includes a power supply module, a signal output module, a power consumption module, and a monitoring module, wherein, The power input terminal of the power module is electrically connected to an AC power source. The power output terminal of the power module is electrically connected to the power input terminal of the signal output module and the first power input terminal of the monitoring module, respectively. The detection signal output terminal of the signal output module is electrically connected to the detection signal input terminal of the power consumption module. The control signal output terminal of the signal output module is electrically connected to the control signal input terminal of the monitoring module. The second power input terminal of the monitoring module is electrically connected to the power output terminal of the battery pack. The control signal output terminal of the monitoring module is electrically connected to the control signal input terminal of the signal output module. The alarm signal output terminal of the monitoring module is electrically connected to the alarm signal input terminal of the signal output module. The power output terminal of the monitoring module is also electrically connected to the power input terminal of the power consumption module. The power module provides power to the signal output module, which generates detection and control signals. The monitoring module connects the power supply of the battery pack to the power consumption module via the control signal. The power consumption module connects the power supply of the battery pack to a load matching the power rating of the battery pack to form a power consumption loop based on the detection signal. The monitoring module also monitors the power supply voltage of the battery pack and outputs an alarm signal when the power supply voltage drops to a preset standard value. The signal output module includes a first signal output branch, a second signal output branch, and a third signal output branch. The first signal output branch includes a first switch and a first contactor; the second signal output branch includes a second contactor; and the third signal output branch includes a third contactor. The monitoring module includes a first voltage relay, a second voltage relay, and a third voltage relay. The circuit that connects the first switch and the first normally open contact of the first contactor in parallel is connected in series with the coil of the first contactor, the first normally closed contact of the second contactor, the first normally closed contact of the third contactor, and the normally closed contact of the first voltage relay, so that the first normally open contact of the first contactor and the coil of the first contactor are connected in series to the power output terminal of the power module to form a self-holding circuit.

2. The battery pack discharge detection device according to claim 1, characterized in that, The second signal output branch further includes a second switch, and the third signal output branch further includes a third switch, wherein, The circuit in which the second switch and the first normally open contact of the second contactor are connected in parallel is connected in series with the coil of the second contactor, the first normally closed contact of the first contactor, the second normally closed contact of the third contactor and the normally closed contact of the second voltage relay, so that the first normally open contact of the second contactor and the coil of the second contactor are connected in series to the power output terminal of the power module to form a self-holding circuit. The circuit in which the third switch is connected in parallel with the first normally open contact of the third contactor is connected in series with the coil of the third contactor, the second normally closed contact of the first contactor, the second normally closed contact of the second contactor, and the normally closed contact of the third voltage relay, so that the first normally open contact of the third contactor and the coil of the third contactor are connected in series to the power output terminal of the power module to form a self-holding circuit.

3. The battery pack discharge detection device according to claim 1, characterized in that, The signal output module further includes a timing unit and an alarm unit. The timing unit includes a timer, and the alarm unit includes a buzzer. The circuit in which the second normally open contact of the first contactor, the second normally open contact of the second contactor, and the second normally open contact of the third contactor are connected in parallel is connected in series with the timer and connected to the power output terminal of the power module. The circuit in which the normally open contacts of the first voltage relay, the second voltage relay, and the third voltage relay are connected in parallel is connected in series with the buzzer and connected to the power output terminal of the power module.

4. The battery pack discharge detection device according to claim 1, characterized in that, The signal output module further includes a control signal output branch, which comprises a first current-limiting resistor, a second current-limiting resistor, and an adjustable resistor. The first end of the first current-limiting resistor is electrically connected to the positive output terminal of the power supply module, the second end of the first current-limiting resistor is electrically connected to the first end of the adjustable resistor, the second end of the adjustable resistor is electrically connected to the first end of the second current-limiting resistor, the second end of the second current-limiting resistor is electrically connected to the negative output terminal of the power supply module, and the output terminal of the adjustable resistor is electrically connected to the control signal input terminal of the monitoring module.

5. The battery pack discharge detection device according to claim 1, characterized in that, The monitoring module includes a power input component, a diode, a shunt resistor, a voltmeter, an ammeter, a switching component, a third current-limiting resistor, and a fourth current-limiting resistor. The positive terminal of the power input component is electrically connected to the positive terminal of the diode and the positive terminal of the battery pack, respectively. The negative terminal of the power input component is electrically connected to the negative input terminal of the power consumption module, the negative terminal of the battery pack, the first terminal of the first voltage relay coil, the first terminal of the second voltage relay coil, the first terminal of the third voltage relay coil, and the negative terminal of the voltmeter. The negative terminal of the diode is electrically connected to the second terminal of the first voltage relay coil, the second terminal of the second voltage relay coil, the second terminal of the third voltage relay coil, the first terminal of the shunt resistor, the positive terminal of the voltmeter, and the positive terminal of the ammeter. The second terminal of the shunt resistor is electrically connected to the first terminal of the switching assembly and the negative terminal of the ammeter. The second terminal of the switching assembly is electrically connected to the first terminal of the fourth current-limiting resistor, the positive input terminal of the power consumption module, and the negative output terminal of the power module. The first terminal of the third current-limiting resistor is electrically connected to the control signal output terminal of the signal output module. The second terminal of the third current-limiting resistor is electrically connected to the control terminal of the switching assembly and the second terminal of the fourth current-limiting resistor.

6. The battery pack discharge detection device according to claim 5, characterized in that, The power consumption module includes a first high-power resistor, a second high-power resistor, a third high-power resistor, and a fourth high-power resistor, wherein... The first end of the fourth high-power resistor is electrically connected to the first end of the third normally open contact of the first contactor, the first end of the third normally open contact of the second contactor, and the first end of the third normally open contact of the third contactor. The second end of the fourth high-power resistor is electrically connected to the first end of the fourth normally open contact of the third contactor and the first end of the third high-power resistor. The second end of the third high-power resistor is electrically connected to the first end of the fifth normally open contact of the third contactor, the first end of the fourth normally open contact of the second contactor, and the first end of the second high-power resistor. The second end of the second high-power resistor is electrically connected to the first end of the sixth normally open contact of the third contactor and the first end of the first high-power resistor. The second end of the first high-power resistor is electrically connected to the negative terminal of the access component. Furthermore, the second end of the third normally open contact of the first contactor, the second end of the fourth normally open contact of the second contactor, the second end of the fourth normally open contact of the third contactor, the second end of the fifth normally open contact, and the second end of the sixth normally open contact of the third contactor are respectively electrically connected to the second end of the switch assembly, and the second end of the third normally open contact of the second contactor and the second end of the third normally open contact of the third contactor are respectively electrically connected to the negative terminal of the power supply access assembly.

7. The battery pack discharge detection device according to claim 1, characterized in that, The power module includes a circuit breaker, a transformer, a rectifier bridge, and a power switch, wherein, The first terminal of the circuit breaker is electrically connected to the AC power supply, the second terminal of the circuit breaker is electrically connected to the input terminal of the transformer, the output terminal of the transformer is electrically connected to the input terminal of the rectifier bridge, the positive output terminal of the rectifier bridge is electrically connected to the first terminal of the power switch, the second terminal of the power switch is electrically connected to the positive input terminal of the power supply of the signal output module, and the negative output terminal of the rectifier bridge is electrically connected to the negative input terminal of the power supply of the signal output module and the first negative input terminal of the power supply of the monitoring module, respectively.

8. A battery pack discharge detection system, characterized in that, The system includes a housing and a battery pack discharge detection device as described in any one of claims 1 to 7.

9. The battery pack discharge detection system according to claim 8, characterized in that, The enclosure is equipped with a voltmeter, an ammeter, a timer, a power switch, a first switch, a second switch, a third switch, a first indicator light, a second indicator light, a third indicator light, and a power input component.

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