CN220711175U - Power load management device - Google Patents

Abstract

The utility model discloses a power load management device, comprising: the control module, the power module and at least one current sampling branch and control branch; the control module is respectively connected with the power supply module, the current sampling branch and the control branch; the current sampling branch comprises a current acquisition module and an access detection module, and the access detection module is respectively connected with the current acquisition module and the control module; the control branch comprises a control signal input module, a control signal output module and a control loop detection module; the control module is respectively connected with the signal input module, the control signal output module and the control loop detection module, and the control signal input module is connected with the control signal output module. The utility model solves the technical problems of low reliability of load control in real time acquisition of one or more paths of loads in the prior art.

Description

Power load management device

Technical Field

The utility model relates to the technical field of power, in particular to a power load management device.

Background

In order to promote the construction of a novel power load management system, the national development and reform commission definitely uses power load management to carry out load monitoring and control, supports the normalized operation of a demand side management working system, and realizes the accurate management and control of power side loads. The novel power load management system is constructed according to the construction route of trial construction, step popularization and comprehensive deepening, is integrally positioned on the load control and normalized demand side management under the ordered electricity utilization, effectively supports the services of the ordered electricity utilization, the demand response, the auxiliary service, the safe electricity utilization and the like, and carries out the demand side load management and real-time accurate control. The novel load management system is divided into four layers, the uppermost layer is a system layer and comprises an electricity consumption information acquisition system and a metering automation system, the middle layer 1 is a measurement terminal and a special transformer terminal and is used for wirelessly receiving a command issued by the system, uploading collected electricity consumption information of a load management branch device, the middle layer 2 is a load management branch device and is used for collecting electricity consumption information of a distribution line, receiving a control command issued by the measurement terminal and the special transformer terminal of the middle layer 1, controlling a lower-layer molded case circuit breaker or a frame-type circuit breaker and collecting the opening and closing states of auxiliary contacts of a molded case circuit breaker or a frame-type circuit breaker switch; the lowest layer is a molded case circuit breaker or a frame-type circuit breaker and is responsible for controlling the closing and opening of the power utilization line.

At present, a three-phase power monitor is often adopted in the existing power load management system to collect power consumption information, but only one path of load power consumption information and one path of breaker on-off state can be collected and uploaded; the three-phase power monitor belongs to single-phase power supply, needs to use independent auxiliary power supply, and auxiliary power supply gets from a certain phase of monitoring circuit, and when single-phase trouble, three-phase power monitor can't continue to start, and its relay output function of three-phase power monitor is weak, and relay output capacity is insufficient to and can't realize the broken string and detect, thereby can't realize accurate load control. Therefore, it is needed to provide an electric load management device, which solves the technical problems of the existing real-time collection of one or more loads and low reliability of load control.

Disclosure of Invention

The utility model mainly aims to provide an electric power load management device, which aims to solve the technical problems of real-time acquisition of one or more paths of loads and low reliability of load control in the prior art.

To achieve the above object, the present utility model provides an electrical load management apparatus comprising: the system comprises a control module, a power module, a voltage sampling module, at least one current sampling branch and a control branch;

the control module is respectively connected with the power supply module, the voltage sampling module, the current sampling branch and the control branch; the power supply module is connected with the voltage sampling module;

the current sampling branch comprises a current acquisition module and an access detection module, and the access detection module is respectively connected with the current acquisition module and the control module;

the control branch comprises a control signal input module, a control signal output module and a control loop detection module; the control module is respectively connected with the signal input module, the control signal output module and the control loop detection module, and the control signal input module is connected with the control signal output module.

In one of the preferred schemes, the control signal output module comprises a control signal output circuit; the control signal output circuit comprises a triode Q14, wherein the base electrode of the triode Q14 is respectively connected with the control module and a resistor R24, the collector electrode of the triode Q14 is respectively connected with a resistor R68 and the grid electrode of a MOS tube Q13, the drain electrode of the MOS tube Q13 is connected with the control signal input module, and the source electrode of the MOS tube Q13 is respectively connected with the other end of the resistor R68 and an external circuit; the emitter of the triode Q14 and the other end of the resistor R24 are grounded.

In one preferred scheme, the control signal input module comprises a control signal input circuit, the control signal input circuit comprises a relay K5, a1 pin of the relay K5 is respectively connected with a diode D7 and a collector electrode of a triode Q9, a base electrode of the triode Q9 is respectively connected with a resistor R19 and an upper-layer equipment control port, and an emitter electrode of the triode Q9 and the other end of the resistor R19 are grounded; the pin 2 of the relay K5 is respectively connected with the other end of the diode D7 and the signal control output module, and the pins 3, 4 and 5 of the relay K5 are connected with the plug connector J2; the plug connector J2 is connected with the control module.

According to one of the preferred schemes, the control loop detection module comprises a control loop detection circuit, the control loop detection circuit comprises a voltage division circuit, one end of the voltage division circuit is connected with the control module, the other end of the voltage division circuit is connected with an optical coupler N7, and the other end of the optical coupler N7 is connected with the control module, the ground end and the power supply end respectively.

In one preferred scheme, the voltage dividing circuit comprises a diode D1, one end of the diode D1 is connected with the control module, the other end of the diode D1 is connected with a resistor R37 through a resistor R36, and the other end of the resistor R37 is respectively connected with a resistor R49, a capacitor C24 and an optocoupler N7; the other ends of the resistor R49 and the capacitor C24 are respectively connected with a resistor R48 and an optocoupler N7, the other end of the resistor R48 is connected with a resistor R39, and the other end of the resistor R39 is connected with a control module.

According to one of the preferred schemes, the access detection module comprises an access detection circuit, the access detection circuit comprises a plug connector J9, one end of the plug connector J9 is connected with the current sampling module, the other end of the plug connector J9 is connected with a plug connector J10, the other end of the plug connector J10 is respectively connected with a resistor RM1, a capacitor CM1 and a control module, the other end of the resistor RM1 is connected with a power supply end, and the other end of the capacitor CM1 is grounded.

In one preferred embodiment, the power module includes a rectifying circuit, the rectifying circuit includes a plug-in connector J1, a1 pin of the plug-in connector J1 is connected with a resistor RVA and a resistor RA16, the other end of the resistor RA16 is connected with a diode DP1 and a diode DP2, the other end of the diode DP1 is connected with a diode DP3, a diode DP5 and a diode DP7, the other end of the diode DP3 is connected with a diode DP4 and a resistor RB16, the other end of the resistor RB16 is connected with a 2 pin of the plug-in connector J1 and a resistor RVB, and the other end of the diode DP4 is connected with a diode DP 2; the other end of the diode DP5 is respectively connected with a resistor RC16 and a diode DP6, the other end of the resistor RC16 is respectively connected with a 3 pin of the plug-in unit and the resistor RC16, and the other end of the diode DP6 is connected with a diode DP 4; the other end of the diode DP7 is respectively connected with the resistor RN1 and the diode DP8, the resistor RN1 is respectively connected with the resistor RVC, the resistor RVB, the other end of the resistor RVA and pins 4 and 5 of the plug connector, and the other end of the diode DP8 is connected with the diode DP 6.

In one preferred scheme, the power supply module further comprises a power supply circuit, the power supply circuit comprises a power supply chip U12, a1 pin of the power supply chip U12 is respectively connected with a resistor RP16 and a capacitor CP5, the other end of the resistor RP16 is respectively connected with a capacitor CP3, a diode D11 and a capacitor CP6, the other end of the diode D11 is respectively connected with the resistor RP11 and the resistor RP12, the other end of the resistor RP11 is connected with the other end of the capacitor CP3, and the other end of the resistor RP12 is respectively connected with a rectifying circuit and a ground end through a resistor RP 14; the 4 pin of the power chip U12 is connected with one end of the resistor RP 14; the 5 pins of the power chip U12 are respectively connected with the rectifying circuit and the ground end through a resistor RP 15; pins 6, 7, 8, 9 and 10 of the power chip U12 are respectively connected with a diode DP11 and a source electrode of a MOS tube QP1, a grid electrode of the MOS tube QP1 is respectively connected with the other end of the diode DP11 and a rectifying circuit, a drain electrode of the MOS tube QP1 is respectively connected with a transformer TR1 and a diode D12, the other end of the diode D12 is respectively connected with a resistor RP17 and a diode CP7, and the other ends of the resistor RP17 and the diode CP7 are respectively connected with the rectifying circuit and the transformer TR 1; the other ends of the pins 2 and 3, the capacitor CP5 and the diode CP6 of the power chip U12 are grounded.

In one of the preferred schemes, the power supply module further comprises an output circuit, wherein the output circuit comprises a first output branch and a second output branch;

the first output branch circuit is connected with the power circuit and is used for outputting a first output voltage to supply power for the control module;

the second output branch circuit is connected with the power circuit and is used for outputting a second output voltage to supply power for each load circuit.

In one of the preferred embodiments, the power load management device further includes a security module, the security module including a security circuit, the security circuit including a security chip U6 and a power control circuit;

the 1 pin of the safety chip U6 is grounded; pins 2, 3, 4, 5, 6 and 7 of the safety chip U6 are connected with the control module; the 8 pins of the safety chip U6 are respectively connected with the power supply control circuit and the capacitor C78, and the other end of the capacitor C78 is grounded;

the power supply control circuit comprises a triode Q3, wherein the base electrode of the triode Q3 is connected with a resistor R51 and a control module respectively, the emitter electrode of the triode Q3 is connected with the other end of the resistor R51 and the ground end respectively, the collector electrode of the triode Q3 is connected with a resistor R52 and the grid electrode of a MOS tube Q1 respectively, the source electrode of the MOS tube Q1 is connected with the other end of the resistor R52 and the power supply end respectively, and the drain electrode of the MOS tube Q1 is connected with the 8 pin of a safety chip U6.

In the above-described aspect of the present utility model, the power load management apparatus includes: the system comprises a control module, a power module, a voltage sampling module, at least one current sampling branch and a control branch; the control module is respectively connected with the power supply module, the voltage sampling module, the current sampling branch and the control branch; the power supply module is connected with the voltage sampling module; the current sampling branch comprises a current acquisition module and an access detection module, and the access detection module is respectively connected with the current acquisition module and the control module; the control branch comprises a control signal input module, a control signal output module and a control loop detection module; the control module is respectively connected with the signal input module, the control signal output module and the control loop detection module, and the control signal input module is connected with the control signal output module. The utility model is provided with one or more current sampling branches and control branches, can realize the functions of collecting the electricity consumption of one or more loads and detecting signal input, output and control loops, and solves the technical problems of real-time collection of one or more loads and low reliability of load control in the prior art.

In the utility model, the power supply module can take power from the voltage sampling module, and any two-phase voltage on A, B, C, N can normally work when the voltage is larger than 0.6Unom, so that the abnormal stop of the device caused by single-circuit power failure is avoided.

In the utility model, the control branch circuit supports the output of a three-terminal relay, each electric shock has two modes of normally open and normally closed, the breaking capacity of the electric shock is 250V and 10A, and the control of external circuits such as a molded case circuit breaker and a frame circuit breaker is satisfied; meanwhile, the control loop detection module is arranged to realize the control loop disconnection detection of the control branch circuit between external circuits, so as to prevent the control loop from being damaged.

In the utility model, the acquisition of the electric energy data can be realized through the current sampling branch circuit, and whether the external equipment connected with the circuit acquisition module, such as a current transformer, is normally installed or not is judged.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a first configuration of an electrical load management device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second structure of an electrical load management device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a power module according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a control signal input module according to an embodiment of the utility model;

FIG. 5 is a schematic diagram of a control signal output module according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a control branch according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a control loop detection module according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a security module according to an embodiment of the present utility model;

fig. 9 is a schematic diagram of an access detection module according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a control module; 2. a power module; 3. a current sampling branch; 4. a control branch; 5. a security module; 6. a voltage sampling module; 7. a storage module; 8. a clock module; 9. a display module; 10. a key module; 11. an RS485 communication module; 12. a Bluetooth communication module; 13. an indicator light module; 14. a metering module; 31. a current sampling module; 32. accessing a detection module; 41. a control signal input module; 42. a control signal output module; 43. and the control loop detection module.

The achievement of the object, functional features and advantages of the present utility model will be further described with reference to the drawings in connection with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as upper and lower … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the embodiments, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model.

Referring to fig. 1-9, according to an aspect of the present utility model, there is provided an electrical load management apparatus including: the control module 1, the power module 2, the voltage sampling module 6, and at least one current sampling branch 3 and a control branch 4;

the control module 1 is respectively connected with the power module 2, the current sampling branch 3 and the control branch 4, and the power module 2 is connected with the voltage sampling module 6;

the current sampling branch 3 comprises a current sampling module 31 and an access detection module 32, and the access detection module 32 is respectively connected with the current sampling module 31 and the control module 1;

the control branch 4 comprises a control signal input module 41, a control signal output module 42 and a control loop detection module 43; the control module 1 is respectively connected with the signal input module, the control signal output module 42 and the control loop detection module 43, and the control signal input module 41 is connected with the control signal output module 42.

Specifically, in this embodiment, the power module 2 includes a rectifying circuit, where the rectifying circuit includes a plug-in connector J1, a pin 1 of the plug-in connector J1 is connected to a resistor RVA and a resistor RA16, another end of the resistor RA16 is connected to a diode DP1 and a diode DP2, another end of the diode DP1 is connected to a diode DP3, a diode DP5 and a diode DP7, another end of the diode DP3 is connected to a diode DP4 and a resistor RB16, another end of the resistor RB16 is connected to a pin 2 of the plug-in connector J1 and a resistor RVB, and another end of the diode DP4 is connected to the diode DP 2; the other end of the diode DP5 is respectively connected with a resistor RC16 and a diode DP6, the other end of the resistor RC16 is respectively connected with a 3 pin of the plug-in unit and the resistor RC16, and the other end of the diode DP6 is connected with a diode DP 4; the other end of the diode DP7 is respectively connected with the resistor RN1 and the diode DP8, the resistor RN1 is respectively connected with the resistor RVC, the resistor RVB, the other end of the resistor RVA and pins 4 and 5 of the plug connector, and the other end of the diode DP8 is connected with the diode DP 6.

Specifically, in this embodiment, the power module 2 further includes an inductor L1, one end of the inductor L1 is connected to a diode DP7, the other end of the inductor L1 is connected to a diode CP1, a resistor RP5, a resistor RP17, a diode CP7, and a transformer TR1, the other end of the diode CP1 is connected to a diode CP2, a resistor RP2, and a resistor RP3, the other end of the diode CP2 is connected to an inductor L3 and a resistor RP4, the other end of the resistor RP2 is connected to the other end of the resistor RP1, and the other end of the resistor RP3 is connected to the resistor RP 4; the other end of the resistor RP5 is connected with a resistor RP9 and a diode DP9 respectively through a resistor RP6, a resistor RP7 and a resistor RP8 in sequence, and the other end of the diode DP9 is connected with the other end of the resistor RP 4.

Specifically, in this embodiment, the power module 2 further includes a power circuit, where the power circuit includes a power chip U12, a1 pin of the power chip U12 is connected to a resistor RP16, a capacitor CP4, and a capacitor CP5, another end of the resistor RP16 is connected to a capacitor CP3, a diode D11, and a capacitor CP6, another end of the diode D11 is connected to a resistor RP11 and a resistor RP12, another end of the resistor RP11 is connected to another end of the capacitor CP3, another end of the resistor RP12 is connected to a resistor RP13, and another end of the resistor RP13 is connected to a diode DP9 and a ground through a resistor RP14, respectively; the 4 pin of the power chip U12 is connected with one end of the resistor RP 14; the 5 pin of the power chip U12 is respectively connected with a diode DP9 and a ground terminal through a resistor RP 15; pins 6, 7, 8, 9 and 10 of the power chip U12 are respectively connected with a diode DP11, a diode DP10 and a source electrode of the MOS transistor QP 1; the grid electrode of the MOS tube QP1 is respectively connected with a diode DP11, a diode DP10, a resistor RP9 and a resistor RP10, and the other end of the resistor RP9 is respectively connected with the other ends of the resistor RP8 and the resistor RP 10; the drain electrode of the MOS tube QP1 is respectively connected with the input end of the transformer TR1 and the diode D12, the other end of the diode D12 is respectively connected with the resistor RP17 and the diode CP7, and the other ends of the resistor RP17 and the diode CP7 are respectively connected with the resistor RP5 and the input end of the transformer TR 1; the other ends of pins 2 and 3, a capacitor CP6, a capacitor CP5, a capacitor CP4 and a diode CP6 of the power chip U12 are grounded.

Specifically, in the present embodiment, the power module 2 further includes an output circuit including a first output branch and a second output branch; the first output branch circuit is connected with the power circuit and is used for outputting a first output voltage to supply power for the control module 1; the first output branch circuit comprises a diode D14, one end of the diode D14 is connected with the output end of the transformer TR1, the other end of the diode D14 is respectively connected with a capacitor CP8, a capacitor CP9, a control module 1, a capacitor CP10, a resistor RP19 and a 3 pin of a voltage regulator U14, a1 pin of the voltage regulator U14 is respectively connected with a capacitor CP11, a capacitor CP17, a capacitor C38 and a capacitor C52, and the capacitor C52, the capacitor CP9, the capacitor CP10, the resistor RP19, a 2 pin of the voltage regulator U14, the capacitor CP11, the capacitor CP17 and the capacitor C38 are all connected with the output end of the transformer TP 1; the other end of the capacitor CP8 is connected with a resistor RP18, and the other end of the resistor RP18 is connected with a diode D14; the second output branch circuit is connected with the power circuit and is used for outputting a second output voltage to supply power for each load circuit; the second output branch comprises a diode D13, one end of the diode D13 is connected with the output end of the transformer TR1, the other end of the diode D13 is respectively connected with a diode CP12, a resistor RP12, a diode D15 and a capacitor CP14, the other end of the diode CP12 is connected with one end of the diode D13 through a resistor RP20, the other end of the diode D15 is respectively connected with a capacitor CP15, a capacitor CP16, a resistor RP22 and a capacitor C53, and the other ends of the capacitor CP14, the capacitor CP15, the capacitor CP16, the resistor RP22 and the capacitor C53 are respectively connected with the output end and the ground end of the transformer TR 1; one end of the resistor RP22 is connected with the control module 1, and the other end of the resistor RP21 is connected with one end of the capacitor CP16 through the capacitor CP 13; the power supply module 2 is powered on from A, B, C, N, any two lines are larger than AC132V, and the power supply module 2 can work normally, and the working range of the power supply module 2 is AC132V-AC420V; after the front end of the power module 2 is subjected to voltage dependent resistor anti-surge protection, namely anti-surge protection is performed through a resistor RVA, a resistor RVB and a resistor RVC in the rectifying circuit, and a three-phase four-wire full-wave rectifying circuit is adopted; the middle end adopts an external 800V high-voltage MOS tube and a power chip of an internal 900V high-voltage MOS tube to be connected in series to form counterattack adjustment, adopts two paths of pulse transformers for isolation output, and outputs two paths of voltages through two paths of output branches; in the present utility model, the second output voltage of the second output branch is 17.5V, and the reverse spike voltage and the two 470uF/25V electrolytic capacitors are suppressed and rectified and filtered through the 3A fast recovery diode, that is, through the diode D13, that is, the capacitor CP14 and the capacitor CP15, so as to supply power to the control module 1, where the second output voltage can be set as required, and the present utility model is not limited specifically; the first output voltage of the first output branch is 18.5V, reverse peak is restrained through a 1A fast recovery diode, namely the fast recovery diode is a diode D14, and a 220uF/25V electrolytic capacitor is used for rectifying and filtering, the electrolytic capacitor is a capacitor CP9 and is used for supplying power to each load circuit, the load carrying capacity of the first output branch can reach 50mA, in the utility model, the first output voltage can be set according to the requirement, and the utility model is not particularly limited.

Specifically, in the present embodiment, the control signal output module 42 includes a control signal output circuit; the control signal output circuit comprises a triode Q14, wherein the base electrode of the triode Q14 is connected with a resistor R69 and a resistor R24 respectively, the other end of the resistor R69 is connected with the control module 1, the collector electrode of the triode Q14 is connected with a resistor R68 and the grid electrode of a MOS tube Q13 respectively, the drain electrode of the MOS tube Q13 is connected with a capacitor C66 and the control signal input module 41 respectively, and the other end of the capacitor C66 is grounded; the source electrode of the MOS tube Q13 is respectively connected with the other end of the resistor R68 and the power supply end; the emitter of the triode Q14 and the other end of the resistor R24 are grounded.

Specifically, in this embodiment, the control signal input module 41 includes a control signal input circuit, where the control signal input circuit includes a relay K5, a1 pin of the relay K5 is connected to a diode D7 and a collector of a triode Q9, a base of the triode Q9 is connected to a resistor R19 and a resistor R18, and another end of the resistor R18 is connected to a control port of an upper device, and is configured to receive a control instruction of the upper device; the emitter of the triode Q9 and the other end of the resistor R19 are grounded; the pin 2 of the relay K5 is respectively connected with the other end of the diode D7 and the resistor R16, the other end of the resistor R16 is connected with the signal control output module, and the pins 3, 4 and 5 of the relay K5 are respectively connected with the pins 2, 3 and 1 of the plug-in connector J2; the pins 4 and 5 of the plug connector J2 are respectively connected with the control module 1; the other end of the resistor R69 of the control signal output circuit is connected with a GPIO output port of the control module 1, when the control module 1 outputs a high level, the 2 pin of the relay K5 is at a high level, a pulse control signal or a level control signal is output by a control port DIO of the upper equipment to be tested, when the pulse control signal or the level control signal is input, the DIO is at a high level, the 1 pin of the relay K5 is at a low level, and the relay acts; the pulse control signal and the level control signal output by the upper equipment control port are hard link control, and the safety, the reliability and the accuracy of control can be ensured without passing through the control module 1.

Specifically, in this embodiment, the control loop detection module 43 includes a control loop detection circuit, where the control loop detection circuit includes a voltage division circuit, one end of the voltage division circuit is connected to the control module 1, the other end of the voltage division circuit is connected to the optocoupler N7, and the other end of the optocoupler N7 is connected to the control module 1, the ground end, and the power supply end respectively; the voltage dividing circuit comprises a resistor R39, a resistor R48, a resistor R37, a resistor R36 and a diode D1, wherein one end of the resistor R39 is connected with the control module 1, the other end of the resistor R39 is connected with the resistor R48, the other end of the resistor R48 is respectively connected with a resistor R49, a capacitor C24 and a pin 2 of an optocoupler N7, one end of the diode D1 is connected with the control module 1, the other end of the diode D1 is connected with the resistor R36, the other end of the resistor R36 is connected with the resistor R37, and the other end of the resistor R37 is respectively connected with the resistor R49, the other end of the capacitor C24 and the pin 1 of the optocoupler N7; the 3 pin of the optocoupler N7 is respectively connected with the capacitor C25 and the ground end, the 4 pin of the optocoupler N7 is respectively connected with the resistor R125, the other end of the capacitor C25 and the control module 1, and the other end of the resistor R125 is connected with the power supply end; when the relay control loop is not disconnected, an AC220 voltage is arranged between the R1_CK and the R1_COM, namely, one end of the resistor R39 and the diode D1, which is connected with the control module 1, is provided with an AC32V voltage difference at two ends of the resistor R49, and after the AC voltage passes through the optocoupler N7, a variable AC signal is generated at the pin CK_REALAT1, namely, a variable AC signal is generated at one end of the 4 pin of the optocoupler N7, which is connected with the control module 1; when the relay control loop is disconnected, no voltage difference exists between R1_CK and R1_COM, no voltage exists at two ends of a resistor R49, an optocoupler N7 is not conducted, the pin of CK_REALAT1 is at a high level, and the control module 1 judges that the signal is disconnected and prompts on an indicator lamp.

Specifically, in this embodiment, the electrical load management device includes at least one control branch 4, that is, the electrical load management device includes at least one control signal input module 41, a control signal output module 42, and a control loop detection module 43; the utility model is not particularly limited, and one or a plurality of control branches 4 can be specifically arranged according to the needs; the control port of the upper-layer equipment sends a tripping command to the control module 1 through RS485, after the control module 1 confirms that a tripping command frame is correct, the control module 1 pulls up the 2 pin of the relay K5, at the moment, the device is in waiting for the hard link control signal output of the upper-layer equipment, the control port of the upper-layer equipment sends a pulse control signal or a level control signal in effective time, after the device receives the pulse control signal or the level control signal, the 1 pin of the relay K5 is pulled down, and the relay K5 acts, so that the shunt release of the breaker of the lower-layer equipment is controlled to realize load tripping; the output of the relay K5 is controlled by the control module 1 and an upper-layer equipment control port, wherein the GPIO output port of the control module 1 is controlled by the encrypted RS485 port, the upper-layer equipment control port is controlled by an upper-layer intelligent measuring terminal or a load management device, a control signal is directly connected to the relay K5, namely, a pulse control signal or a level control signal is directly connected to the relay K5, and the control reliability is ensured without passing through the control module 1.

Specifically, in the present embodiment, the power load management apparatus further includes a security module 5, the security module 5 including a security circuit including a security chip U6 and a power supply control circuit; the 1 pin of the safety chip U6 is grounded; pins 2, 3, 4, 5, 6 and 7 of the safety chip U6 are connected with the control module 1; the 8 pins of the safety chip U6 are respectively connected with the power supply control circuit and the capacitor C78, and the other end of the capacitor C78 is grounded; the power supply control circuit comprises a triode Q3, wherein the base electrode of the triode Q3 is respectively connected with a resistor R51 and a resistor R55, the other end of the resistor R55 is connected with the control module 1, the emitter electrode of the triode Q3 is respectively connected with the other end of the resistor R51 and the ground end, the collector electrode of the triode Q3 is respectively connected with a resistor R52 and the grid electrode of a MOS tube Q1, the source electrode of the MOS tube Q1 is respectively connected with the other end of the resistor R52 and the power supply end, the drain electrode of the MOS tube Q1 is respectively connected with an 8 pin of a safety chip U6 and a capacitor C79, and the other end of the capacitor C79 is grounded; the SPI communication protocol is adopted between the safety module 5 and the control module 1, the function of communication encryption and decryption of the power load device can be realized through the safety module 5, the communication data is prevented from being stolen or tampered in the retransmission process, and the safety of communication is ensured.

Specifically, in this embodiment, the access detection module 32 includes an access detection circuit, where the access detection circuit includes a plug J9, one end of the plug J9 is connected to the current sampling module 31, the other end of the plug J9 is connected to the plug J10, the other end of the plug J10 is connected to the resistor RM1, the capacitor CM1, and the control module 1, and the other end of the resistor RM1 is connected to a power supply end, and the other end of the capacitor CM1 is grounded; in the utility model, the plug connector J9 and the plug connector J10 adopt RJ45 interfaces, the utility model is not particularly limited, the utility model can be particularly set according to the requirement, the 2-7 pins of the plug connector J10 are sequentially connected with the 6-1 pin of the plug connector J9, the 1-8 pins of the plug connector J10 are used for interface insertion judgment, when the current sampling module 31 is inserted into the plug connector J10, the 8 pin of the plug connector J10 is pulled down, namely, the connection pin of the plug connector J10 and the control module 1 is pulled down, the control module 1 judges that the current sampling module 31 is normally inserted, if the 8 pin of the plug connector J10 is detected to be high level, the current sampling module 31 is considered not inserted, and the insertion state can be read through a remote reading, so that whether the current sampling module 31 is correctly installed or not is judged through the access detection module 32, and the problem of field installation reliability is solved.

Specifically, in this embodiment, the power load management device includes at least one current sampling branch 3, that is, the power load management device includes at least one current sampling module 31 and an access detection module 32; the present utility model is not particularly limited, and one or a plurality of current sampling branches 3 may be provided as needed.

Specifically, in this embodiment, the power load management device further includes a voltage sampling module 6, one end of the voltage sampling module 6 is connected with an external three-phase voltage input end, the other end of the voltage sampling module 6 is respectively connected with the control module 1 and the power module 2, the power module 2 fetches electricity from the voltage sampling module 6, and when any two-phase voltage on A, B, C, N is greater than 0.6Unom, the power load management device can normally work, so that single-phase faults are avoided, and the whole device stops working.

Specifically, in this embodiment, the power load management device further includes a storage module 7, a clock module 8, a display module 9, a key module 10, a backup power module, an RS485 communication module 11, a bluetooth communication module 12, an indicator light module 13, and a metering module 14, which are not specifically limited, and the present utility model is not specifically limited as long as conventional modules are specifically adopted.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather as utilizing equivalent structural changes made in the description of the present utility model and the accompanying drawings or directly/indirectly applied to other related technical fields under the inventive concept of the present utility model.

Claims (10)

1. An electrical load management apparatus, the electrical load management apparatus comprising: the system comprises a control module, a power module, a voltage sampling module, at least one current sampling branch and a control branch;

the control module is respectively connected with the power supply module, the voltage sampling module, the current sampling branch and the control branch; the power supply module is connected with the voltage sampling module;

the current sampling branch comprises a current acquisition module and an access detection module, and the access detection module is respectively connected with the current acquisition module and the control module;

the control branch comprises a control signal input module, a control signal output module and a control loop detection module; the control module is respectively connected with the signal input module, the control signal output module and the control loop detection module, and the control signal input module is connected with the control signal output module.

2. An electrical load management apparatus according to claim 1, wherein the control signal output module comprises a control signal output circuit; the control signal output circuit comprises a triode Q14, wherein the base electrode of the triode Q14 is respectively connected with the control module and a resistor R24, the collector electrode of the triode Q14 is respectively connected with a resistor R68 and the grid electrode of a MOS tube Q13, the drain electrode of the MOS tube Q13 is connected with the control signal input module, and the source electrode of the MOS tube Q13 is respectively connected with the other end of the resistor R68 and an external circuit; the emitter of the triode Q14 and the other end of the resistor R24 are grounded.

3. An electrical load management device according to any one of claims 1-2, wherein the control signal input module comprises a control signal input circuit, the control signal input circuit comprises a relay K5, a1 pin of the relay K5 is respectively connected with a diode D7 and a collector of a triode Q9, a base of the triode Q9 is respectively connected with a resistor R19 and an upper device control port, and an emitter of the triode Q9 and the other end of the resistor R19 are grounded; the pin 2 of the relay K5 is respectively connected with the other end of the diode D7 and the signal control output module, and the pins 3, 4 and 5 of the relay K5 are connected with the plug connector J2; the plug connector J2 is connected with the control module.

4. An electrical load management device according to any one of claims 1-2, wherein the control loop detection module comprises a control loop detection circuit, the control loop detection circuit comprises a voltage division circuit, one end of the voltage division circuit is connected with the control module, the other end of the voltage division circuit is connected with an optocoupler N7, and the other end of the optocoupler N7 is connected with the control module, a ground end and a power supply end respectively.

5. The power load management device according to claim 4, wherein the voltage dividing circuit comprises a diode D1, one end of the diode D1 is connected with the control module, the other end of the diode D1 is connected with a resistor R37 through a resistor R36, and the other end of the resistor R37 is connected with a resistor R49, a capacitor C24 and an optocoupler N7 respectively; the other ends of the resistor R49 and the capacitor C24 are respectively connected with a resistor R48 and an optocoupler N7, the other end of the resistor R48 is connected with a resistor R39, and the other end of the resistor R39 is connected with a control module.

6. An electrical load management device according to any of claims 1-2, wherein the access detection module comprises an access detection circuit, the access detection circuit comprises a plug J9, one end of the plug J9 is connected with the current collection module, the other end of the plug J9 is connected with a plug J10, the other end of the plug J10 is respectively connected with a resistor RM1, a capacitor CM1 and a control module, the other end of the resistor RM1 is connected with a power supply end, and the other end of the capacitor CM1 is grounded.

7. An electrical load management device according to any one of claims 1-2, wherein the power module comprises a rectifying circuit, the rectifying circuit comprises a plug J1, pin 1 of the plug J1 is connected with a resistor RVA and a resistor RA16 respectively, the other end of the resistor RA16 is connected with a diode DP1 and a diode DP2 respectively, the other end of the diode DP1 is connected with a diode DP3, a diode DP5 and a diode DP7 respectively, the other end of the diode DP3 is connected with a diode DP4 and a resistor RB16 respectively, the other end of the resistor RB16 is connected with pin 2 of the plug J1 and a resistor RVB respectively, and the other end of the diode DP4 is connected with the diode DP 2; the other end of the diode DP5 is respectively connected with a resistor RC16 and a diode DP6, the other end of the resistor RC16 is respectively connected with a 3 pin of the plug-in unit and the resistor RC16, and the other end of the diode DP6 is connected with a diode DP 4; the other end of the diode DP7 is respectively connected with the resistor RN1 and the diode DP8, the resistor RN1 is respectively connected with the resistor RVC, the resistor RVB, the other end of the resistor RVA and pins 4 and 5 of the plug connector, and the other end of the diode DP8 is connected with the diode DP 6.

8. The power load management device according to claim 7, wherein the power supply module further comprises a power supply circuit, the power supply circuit comprises a power supply chip U12, pin 1 of the power supply chip U12 is respectively connected with a resistor RP16 and a capacitor CP5, the other end of the resistor RP16 is respectively connected with a capacitor CP3, a diode D11 and a capacitor CP6, the other end of the diode D11 is respectively connected with the resistor RP11 and the resistor RP12, the other end of the resistor RP11 is connected with the other end of the capacitor CP3, and the other end of the resistor RP12 is respectively connected with a rectifying circuit and a ground terminal through a resistor RP 14; the 4 pin of the power chip U12 is connected with one end of the resistor RP 14; the 5 pins of the power chip U12 are respectively connected with the rectifying circuit and the ground end through a resistor RP 15; pins 6, 7, 8, 9 and 10 of the power chip U12 are respectively connected with a diode DP11 and a source electrode of a MOS tube QP1, a grid electrode of the MOS tube QP1 is respectively connected with the other end of the diode DP11 and a rectifying circuit, a drain electrode of the MOS tube QP1 is respectively connected with a transformer TR1 and a diode D12, the other end of the diode D12 is respectively connected with a resistor RP17 and a diode CP7, and the other ends of the resistor RP17 and the diode CP7 are respectively connected with the rectifying circuit and the transformer TR 1; the other ends of the pins 2 and 3, the capacitor CP5 and the diode CP6 of the power chip U12 are grounded.

9. The electrical load management device of claim 8, wherein the power module further comprises an output circuit comprising a first output branch and a second output branch;

the first output branch circuit is connected with the power circuit and is used for outputting a first output voltage to supply power for the control module;

the second output branch circuit is connected with the power circuit and is used for outputting a second output voltage to supply power for each load circuit.

10. An electrical load management device according to any of claims 1-2, further comprising a security module comprising a security circuit comprising a security chip U6 and a power control circuit;

the 1 pin of the safety chip U6 is grounded; pins 2, 3, 4, 5, 6 and 7 of the safety chip U6 are connected with the control module; the 8 pins of the safety chip U6 are respectively connected with the power supply control circuit and the capacitor C78, and the other end of the capacitor C78 is grounded;

the power supply control circuit comprises a triode Q3, wherein the base electrode of the triode Q3 is connected with a resistor R51 and a control module respectively, the emitter electrode of the triode Q3 is connected with the other end of the resistor R51 and the ground end respectively, the collector electrode of the triode Q3 is connected with a resistor R52 and the grid electrode of a MOS tube Q1 respectively, the source electrode of the MOS tube Q1 is connected with the other end of the resistor R52 and the power supply end respectively, and the drain electrode of the MOS tube Q1 is connected with the 8 pin of a safety chip U6.