CN214045001U - Power supply monitor and engineering equipment - Google Patents
Power supply monitor and engineering equipment Download PDFInfo
- Publication number
- CN214045001U CN214045001U CN202120016867.1U CN202120016867U CN214045001U CN 214045001 U CN214045001 U CN 214045001U CN 202120016867 U CN202120016867 U CN 202120016867U CN 214045001 U CN214045001 U CN 214045001U
- Authority
- CN
- China
- Prior art keywords
- power supply
- power
- distribution unit
- controller
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
An embodiment of the utility model provides a power supply monitor and engineering equipment relates to power monitoring technology field. The power supply monitor comprises a controller, a power supply distribution unit and a detection unit, wherein the controller is electrically connected with the power supply distribution unit and the detection unit, the power supply distribution unit comprises a first power supply port, the detection unit is electrically connected with the first power supply port, the detection unit is used for detecting the output current value of the first power supply port in real time, the controller is used for generating a first control signal when the engineering equipment is in a shutdown state and the output current value is greater than a preset current threshold value, and the power supply distribution unit is used for responding to the first control signal and stopping supplying power through the first power supply port. Because the output current value when the engineering equipment is in a shutdown state is the dark current, and the port for supplying power to the power distribution unit is cut off when the dark current is greater than the preset current threshold value, the safety start of the equipment can be ensured, and meanwhile, the safety accident caused by electric leakage can be effectively avoided.
Description
Technical Field
The utility model relates to a power control technical field particularly, relates to a power supply monitor and engineering equipment.
Background
With the development of the traditional fuel engine, the technology of auxiliary starting by adopting an electric motor is comprehensively implemented on engineering equipment; the scheme realizes starting by using the storage battery to drive the motor, a low-voltage system is mostly adopted in the field of engineering machinery at present, and the system has high requirements on the electric quantity and the performance of the storage battery and large required current at the starting moment; based on the characteristics, at present, engineering equipment urgently needs a scheme to solve the problem of abnormal starting caused by dark current and ensure the safety performance of the equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power supply monitor and engineering equipment to solve above-mentioned problem.
The embodiment of the utility model discloses a can realize like this:
in a first aspect, an embodiment of the present application provides a power supply monitor, including: the power distribution unit comprises a first power supply port, and the detection unit is electrically connected with the first power supply port;
the detection unit is used for detecting the output current value of the first power supply port in real time and transmitting the output current value to the controller;
the controller is used for generating a first control signal when the engineering equipment is in a shutdown state and the output current value is greater than a preset current threshold value, and transmitting the first control signal to the power distribution unit;
the power distribution unit is used for responding to the first control signal and stopping supplying power through the first power supply port.
In an optional embodiment, the power distribution unit further includes a second power supply port, and the detection unit is electrically connected to the second power supply port;
the detection unit is also used for detecting the output voltage of the first power supply port in real time and transmitting the output voltage to the controller;
the controller is used for generating a second control signal when the engineering equipment is in a starting state and the output voltage is smaller than a preset voltage threshold value, and transmitting the second control signal to the power distribution unit;
the power distribution unit is used for responding to the second control signal and stopping supplying power through the second power supply port.
In an optional embodiment, the power supply monitor further comprises an alarm unit, and the alarm unit is electrically connected with the controller;
the controller is also used for generating an alarm signal when the engineering equipment is in a starting state and the output voltage is less than a preset voltage threshold value, and transmitting the alarm signal to the warning unit;
the warning unit is used for responding to the warning signal and giving an alarm.
In an optional implementation manner, the power distribution unit includes a processor and a first switch, the processor, the controller and the detection unit are connected through a CAN bus, the power supply, the first switch and the first power supply port are sequentially electrically connected, the processor is electrically connected to the first switch, and the detection unit is electrically connected between the power supply and the first switch;
the controller is used for transmitting the first control signal to the processor;
the processor is used for responding to the first control signal and controlling the first switch to be switched off so as to enable the power distribution unit to stop supplying power through the first power supply port.
In an alternative embodiment, the power distribution unit further comprises a first fuse, the first fuse being connected in series with the first switch.
In an optional implementation manner, the power distribution unit further includes a second switch, the power supply, the second switch and the second power supply port are electrically connected in sequence, the processor is electrically connected to the second switch, and the detection unit is electrically connected between the power supply and the second switch;
the controller is used for transmitting the second control signal to the processor;
the processor is used for responding to the second control signal and controlling the second switch to be switched off so as to enable the power distribution unit to stop supplying power through the second power supply port.
In an alternative embodiment, the power distribution unit further comprises a second fuse, the second fuse being connected in series with the second switch.
In an alternative embodiment, the power distribution unit further comprises a third fuse, and the power supply is electrically connected to the controller through the third fuse.
In an alternative embodiment, the warning unit comprises a warning light.
In a second aspect, an embodiment of the present application further provides an engineering device, where the engineering device includes a power supply, an electrical system, and a power supply monitor in any one of the above embodiments, and the power supply, the power supply monitor, and the electrical system are electrically connected in sequence.
The power supply monitor and the engineering equipment provided by the embodiment of the application comprise a controller, a power supply distribution unit and a detection unit, the controller is electrically connected with the power supply distribution unit and the detection unit, the power supply distribution unit comprises a first power supply port, the detection unit is electrically connected with the first power supply port, the detection unit is used for detecting the output current value of the first power supply port in real time and transmitting the output current value to the controller, the controller is used for generating a first control signal when the engineering equipment is in a shutdown state and the output current value is greater than a preset current threshold value and transmitting the first control signal to the power supply distribution unit, and the power supply distribution unit is used for responding to the first control signal and stopping power supply through the first power supply port. Because the output current value when the engineering equipment is in a shutdown state is the dark current, and the port for supplying power to the power distribution unit is cut off when the dark current is greater than the preset current threshold value, the safety start of the equipment can be ensured, and meanwhile, the safety accident caused by electric leakage can be effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a circuit structure block diagram of an engineering device provided in an embodiment of the present application.
Fig. 2 is a block diagram of a circuit structure of a power supply monitor according to an embodiment of the present application.
Fig. 3 is a block diagram of a further circuit structure of the power supply monitor according to the embodiment of the present application.
Icon: 100-engineering equipment; 110-a power supply; 120-power supply monitor; 122-a controller; 123-a detection unit; 124-power distribution unit; 1241-a processor; 1242-first switch; 1243-second switch; 1244 — first power supply port; 1245-second power supply port; 125-an alert unit; 130-a device body; 132-an electrical system; 134-a motor; f1 — first insurance; f2 — second insurance; f3-third insurance; f4-fourth insurance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The embodiment of the application provides a power supply monitor 120 and engineering equipment 100, which are used for monitoring parameters such as voltage and current in real time, so that the parameters such as voltage and current can react in time when abnormal conditions occur, and the potential safety hazard of an electrical system 132 is reduced.
For the convenience of describing the scheme of the present application in detail, the engineering equipment 100 provided by the embodiment of the present application is described below with reference to the accompanying drawings. Referring to fig. 1, a block diagram of a circuit structure of an engineering apparatus 100 according to an embodiment of the present disclosure is shown. The engineering equipment 100 includes a power supply 110, a power supply monitor 120, and an equipment main body 130. The power supply 110, the power supply monitor 120, and the device main body 130 are electrically connected in this order.
It should be noted that the engineering equipment provided by the present application may be an excavator.
The power supply 110 is used to supply power to the rear-end apparatus main body 130 through the power supply monitor 120 so that the engineering apparatus 100 can operate normally.
The power supply monitor 120 is configured to monitor the current and voltage output to the apparatus main body 130 in real time, and to cut off the output of the power supply 110 when the current and voltage are abnormal, so as to stop supplying power to the apparatus main body 130.
The equipment main body 130 may include an electrical system 132, a motor 134, and the like, to implement the main function of the engineering equipment 100.
Referring to fig. 2, a block diagram of a circuit structure of a power supply monitor 120 according to an embodiment of the present disclosure is shown. The power monitor 120 includes a controller 122, a power distribution unit 124, a detection unit 123 and an alarm unit 125, the controller 122 is electrically connected to the power distribution unit 124, the detection unit 123 and the alarm unit 125, and the detection unit 123 is electrically connected to the power distribution unit 124.
Wherein, the power source 110, the power distribution unit 124 and the main body apparatus are electrically connected in sequence. The power distribution unit 124 is used to supply power to the main body device at the back end or stop supplying power to the main body device at the back end under the control of the controller 122.
Referring to fig. 3, a block diagram of a further circuit structure of the power supply monitor 120 according to the embodiment of the present application is shown. The power distribution unit 124 includes a processor 1241, a first switch 1242, a second switch 1243, a first power supply port 1244, and a second power supply port 1245. The power source 110, the first switch 1242 and the first power supply port 1244 are electrically connected in sequence, the power source 110, the second switch 1243 and the second power supply port 1245 are electrically connected in sequence, the processor 1241 is electrically connected to the controller 122, the first switch 1242 and the second switch 1243, and the detecting unit 123 is electrically connected to the first power supply port 1244 and the second power supply port 1245.
In an alternative embodiment, the first power port 1244 is electrically connected to the electrical system 132 of the body device and the second power port 1245 is electrically connected to the motor 134 of the body device.
As can be appreciated, when the first switch 1242 is closed, the power source 110 may provide power to the electrical system 132 via the power distribution unit 124; when the first switch 1242 is open, the power source 110 cannot provide power to the electrical system 132 through the power distribution unit 124. Meanwhile, when the second switch 1243 is closed, the power supply 110 may supply power to the motor 134 through the power distribution unit 124; when the second switch 1243 is open, the power supply 110 cannot supply power to the motor 134 through the power distribution unit 124.
In an alternative embodiment, the power distribution unit 124 further includes a first fuse F1, a second fuse F2, a third fuse F3 and a fourth fuse F4, the first fuse F1 is connected in series with the first switch 1242, the second fuse F2 is connected in series with the second switch 1243, the power source 110 is electrically connected to the controller 122 through the third fuse F3, and the power source 110 is electrically connected to the alarm unit 125 through the fourth fuse F4.
It can be understood that the first fuse F1, the second fuse F2, the third fuse F3 and the fourth fuse F4 are arranged, so that the circuit can be automatically disconnected when an overcurrent condition occurs in the circuit, and a short circuit condition is avoided.
The first switch 1242 and the second switch 1243 may be switching devices such as an Insulated Gate Bipolar Transistor (IGBT), a triode, and a MOS Transistor.
The detection unit 123 is electrically connected to both the first power supply port 1244 and the second power supply port 1245 of the power distribution unit 124.
Specifically, the detecting unit 123 is electrically connected between the power source 110 and the first switch 1242, and the detecting unit 123 is configured to detect an output current value of the first power supply port 1244 in real time and transmit the output current value to the controller 122. It will be appreciated that the output current value may reflect the magnitude of the current output by the power source 110 to the electrical system 132. If the engineering equipment 100 is in the shutdown state, the output current value is the dark current output to the electrical system 132; if the engineering equipment 100 is in the on state, the output current value is the working current output to the electrical system 132.
The detecting unit 123 is further electrically connected between the power source 110 and the second switch 1243, and the detecting unit 123 is further configured to detect an output voltage of the first power supply port 1244 in real time and transmit the output voltage to the controller 122. It will be appreciated that the output voltage may reflect the magnitude of the voltage provided by the power source 110 to the motor 134.
The controller 122 is configured to generate a first control signal when the engineering equipment 100 is in a shutdown state and the output current value is greater than a preset current threshold, and transmit the first control signal to the power distribution unit 124.
It should be noted that the states of the engineering equipment 100 may include three states, which are a power-off state, a power-on state, and a standby state. Wherein the state of the engineering equipment 100 may be changed according to the actual needs of the user. For example, when the user needs the engineering equipment 100 to work, the engineering equipment 100 is turned on, and at this time, the engineering equipment 100 is in a power-on state; when the user does not need to operate the engineering equipment 100, the user can control the engineering equipment 100 to be stopped or in a standby state, and the engineering equipment 100 is in the stopped state or in the standby state.
As can be appreciated, when the engineering equipment 100 is in the shutdown state and the output current value is greater than the preset current threshold value, it indicates that the dark current of the electrical system 132 is too large, and the electrical system 132 leaks electricity and has a safety hazard if the engineering equipment is in the state of too large dark current for a long time, so that the first control signal is generated to cause the power distribution unit 124 to stop supplying power to the electrical system 132 through the first power supply port 1244.
The controller 122 is further configured to generate a second control signal when the engineering equipment 100 is in the power-on state and the output voltage is less than the preset voltage threshold, and transmit the second control signal to the power distribution unit 124.
As can be appreciated, when the engineering equipment 100 is in the on state and the output voltage is less than the preset voltage threshold, it indicates that the current output voltage is insufficient to support the operation of the motor 134, and there is a power shortage condition, so that the second control signal is generated to enable the power distribution unit 124 to stop supplying power to the motor 134 through the second power supply port 1245.
The power distribution unit 124 is configured to stop supplying power through the first power supply port 1244 in response to the first control signal. Specifically, the controller 122 is configured to transmit a first control signal to the processor 1241, and the processor 1241 is configured to control the first switch 1242 to be turned off in response to the first control signal, so that the power distribution unit 124 stops supplying power through the first power supply port 1244.
The power distribution unit 124 is also used to stop supplying power through the second power supply port 1245 in response to the second control signal. Specifically, the controller 122 is further configured to transmit a second control signal to the processor 1241, and the processor 1241 is configured to control the second switch 1243 to be turned off in response to the second control signal, so that the power distribution unit 124 stops supplying power through the second power supply port 1245.
As can be seen from fig. 3, when the first switch 1242 is turned off, the power source 110 is disconnected from the first power port 1244, and the power source 110 cannot supply power to the electrical system 132 through the first power port 1244. When the second switch 1243 is turned off, the power source 110 is disconnected from the second power supply port 1245, and the power source 110 cannot supply power to the motor 134 through the second power supply port 1245.
The controller 122 is further configured to generate an alarm signal when the engineering equipment 100 is in the power-on state and the output voltage is less than a preset voltage threshold, and transmit the alarm signal to the warning unit 125.
The alert unit 125 is for alerting in response to the alert signal.
It can be understood that, by setting the warning unit 125, the user can be reminded in time when the power supply monitor 120 detects an abnormality, so that the user can respond in time.
In an alternative embodiment, the warning unit 125 may include a warning light. The warning light may include three display states, a green state, a yellow state, and a red state. For example, the warning light may be displayed as green when the power monitor 120 does not detect an abnormal state; the controller 122 may be configured to control the warning light to display yellow when the engineering equipment 100 is in a shutdown state and the output current value is greater than a preset current threshold; the controller 122 may also be configured to control the warning light to display red when the engineering equipment 100 is in the power-on state and the output voltage is less than the preset voltage threshold.
Of course, in other embodiments, the alarm unit 125 may also include other alarm devices, such as a buzzer.
To sum up, the power supply monitor 120 and the engineering equipment 100 provided in the embodiment of the present application include a controller 122, a power supply distribution unit 124, and a detection unit 123, where the controller 122 is electrically connected to both the power supply distribution unit 124 and the detection unit 123, the power supply distribution unit 124 includes a first power supply port 1244, the detection unit 123 is electrically connected to the first power supply port 1244, the detection unit 123 is configured to detect an output current value of the first power supply port 1244 in real time and transmit the output current value to the controller 122, the controller 122 is configured to generate a first control signal and transmit the first control signal to the power supply distribution unit 124 when the engineering equipment 100 is in a shutdown state and the output current value is greater than a preset current threshold, and the power supply distribution unit 124 is configured to stop supplying power through the first power supply port 1244 in response to the first control signal. Because the output current value when the engineering equipment 100 is in the shutdown state is the dark current, and the port for supplying power to the power distribution unit 124 is cut off when the dark current is greater than the preset current threshold, the safety startup of the equipment can be ensured, and meanwhile, the safety accident caused by electric leakage can be effectively avoided.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A power supply monitor is applied to engineering equipment, and the power supply monitor comprises: the power distribution unit comprises a first power supply port, and the detection unit is electrically connected with the first power supply port;
the detection unit is used for detecting the output current value of the first power supply port in real time and transmitting the output current value to the controller;
the controller is used for generating a first control signal when the engineering equipment is in a shutdown state and the output current value is greater than a preset current threshold value, and transmitting the first control signal to the power distribution unit;
the power distribution unit is used for responding to the first control signal and stopping supplying power through the first power supply port.
2. The power supply monitor of claim 1, wherein the power distribution unit further comprises a second power port, the detection unit being electrically connected to the second power port;
the detection unit is also used for detecting the output voltage of the first power supply port in real time and transmitting the output voltage to the controller;
the controller is used for generating a second control signal when the engineering equipment is in a starting state and the output voltage is smaller than a preset voltage threshold value, and transmitting the second control signal to the power distribution unit;
the power distribution unit is used for responding to the second control signal and stopping supplying power through the second power supply port.
3. The power supply monitor of claim 2, further comprising an alert unit electrically connected to the controller;
the controller is also used for generating an alarm signal when the engineering equipment is in a starting state and the output voltage is less than a preset voltage threshold value, and transmitting the alarm signal to the warning unit;
the warning unit is used for responding to the warning signal and giving an alarm.
4. The power supply monitor according to claim 2 or 3, wherein the power distribution unit comprises a processor and a first switch, the processor, the controller and the detection unit are connected through a CAN bus, a power supply, the first switch and the first power supply port are electrically connected in sequence, the processor is electrically connected with the first switch, and the detection unit is electrically connected between the power supply and the first switch;
the controller is used for transmitting the first control signal to the processor;
the processor is used for responding to the first control signal and controlling the first switch to be switched off so as to enable the power distribution unit to stop supplying power through the first power supply port.
5. The power supply monitor of claim 4, wherein the power distribution unit further comprises a first fuse, the first fuse being connected in series with the first switch.
6. The power supply monitor according to claim 4, wherein the power distribution unit further comprises a second switch, the power supply, the second switch and the second power supply port are electrically connected in sequence, the processor is electrically connected to the second switch, and the detection unit is electrically connected between the power supply and the second switch;
the controller is used for transmitting the second control signal to the processor;
the processor is used for responding to the second control signal and controlling the second switch to be switched off so as to enable the power distribution unit to stop supplying power through the second power supply port.
7. The power supply monitor of claim 6, wherein the power distribution unit further comprises a second fuse, the second fuse being connected in series with the second switch.
8. The power supply monitor of claim 4, wherein the power distribution unit further comprises a third fuse, the power supply being electrically connected to the controller through the third fuse.
9. The power supply monitor of claim 3, wherein the alarm unit comprises an alarm light.
10. An engineering equipment, characterized in that the engineering equipment comprises a power supply, an electrical system and a power supply monitor according to any one of claims 1-9, wherein the power supply, the power supply monitor and the electrical system are electrically connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120016867.1U CN214045001U (en) | 2021-01-05 | 2021-01-05 | Power supply monitor and engineering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120016867.1U CN214045001U (en) | 2021-01-05 | 2021-01-05 | Power supply monitor and engineering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214045001U true CN214045001U (en) | 2021-08-24 |
Family
ID=77346052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120016867.1U Active CN214045001U (en) | 2021-01-05 | 2021-01-05 | Power supply monitor and engineering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214045001U (en) |
-
2021
- 2021-01-05 CN CN202120016867.1U patent/CN214045001U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20140017783A (en) | Electric leakage diagnosis apparatus for vehicle using insulation resistance sensor, and control method thereof | |
| CN205283245U (en) | Automatic change -over switch device | |
| KR102053399B1 (en) | Safety monitoring unit | |
| EP2805873B1 (en) | Managing steering with short from battery to ground | |
| CN112653316A (en) | Power supply monitor and engineering equipment | |
| US20150188347A1 (en) | Battery Management Device and Power Supplying System Including the Same | |
| CN101714766A (en) | Battery high-temperature status prevention and protection method and system | |
| CN106864291B (en) | Safety protection system of battery system and battery system | |
| CN214045001U (en) | Power supply monitor and engineering equipment | |
| CN104691443A (en) | Device and method for preventing vehicle-mounted equipment from being disassembled | |
| KR20150077771A (en) | Battery management device and power supplying system including the same | |
| CN104813573B (en) | Apparatus and method for the input protection of power converter | |
| CN204376254U (en) | Intelligent distribution box | |
| EP2889174A1 (en) | Battery management device and power supplying system including the same, electrically isolating each battery unit upon fault | |
| CN110173817B (en) | Air conditioning apparatus | |
| US11498499B2 (en) | Automatic and user initiated isolation testing for automotive alternating current power systems | |
| CN114750715A (en) | Power management system, management method and device thereof and vehicle | |
| CN107370120B (en) | Three-phase power supply protection device and electric power system | |
| CN112054790B (en) | Time delay switching device, power supply system and control method of time delay switching device | |
| CN114592960B (en) | Voltage abnormity protection method and device, storage medium and electronic equipment | |
| CN111064160B (en) | Mobile distribution box | |
| CN214585872U (en) | Fault tripping remote indicating device and circuit breaker | |
| CN217462362U (en) | Safe starting control system | |
| CN103984321A (en) | Building power supplying management system | |
| JPH0438479A (en) | Apparatus for detecting electric leakage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |