CN217721057U - Motor heat dissipation control circuit and motor system - Google Patents
Motor heat dissipation control circuit and motor system Download PDFInfo
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- CN217721057U CN217721057U CN202221457262.7U CN202221457262U CN217721057U CN 217721057 U CN217721057 U CN 217721057U CN 202221457262 U CN202221457262 U CN 202221457262U CN 217721057 U CN217721057 U CN 217721057U
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Abstract
The utility model discloses a motor heat dissipation control circuit and motor system is applied to in the motor, and the motor includes motor body and is used for carrying out radiating water cooling plant to motor body, and this circuit includes: the first temperature sampling circuit is used for detecting a motor temperature signal of the motor body; the input end of the heat dissipation controller is connected with the output end of the first temperature sampling circuit and used for outputting a heat dissipation starting signal when the motor temperature corresponding to the motor temperature signal reaches a preset heat dissipation temperature; the controlled end of the switching circuit is connected with the output end of the heat dissipation controller, the first end of the switching circuit is used for being connected with a power supply, and the second end of the switching circuit is used for being connected with the power supply end of the water cooling device; the switching circuit is used for being conducted according to the starting heat dissipation signal so as to drive the water cooling device to be electrified and operated and dissipate heat of the motor body. The utility model discloses can in time start water cooling plant by the heat dissipation controller and dispel the heat when the motor temperature is too high to guarantee motor safety.
Description
Technical Field
The utility model relates to an electrical equipment technical field especially relates to a motor heat dissipation control circuit and motor system.
Background
The permanent magnet synchronous motor generally adopts high electromagnetic load, and although the purposes of saving materials and reducing the volume are achieved, the problems that the heat generated by the motor is too large and the heat dissipation area is relatively insufficient are also caused. The overhigh temperature not only can influence the working performance of the motor, but also can cause serious damage to the motor, so that the permanent magnet synchronous motor is generally provided with a water cooling device for cooling the motor.
At present, the frequency converter is generally used for directly controlling the motor in the mine operation, and the heat dissipation water cooling device is remotely controlled by a user through a remote DCS (DIstributed Control System). In the control mode, the water cooling device and the motor are respectively controlled, so that the situation that the motor is damaged due to overhigh temperature because the water cooling device does not radiate the motor in time is easy to occur.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide a motor heat dissipation control circuit and motor system aims at solving the problem that the water cooling plant probably does not in time dispel the heat to the motor and leads to the motor to damage.
In order to achieve the above object, the utility model provides a motor heat dissipation control circuit is applied to in the motor, the motor includes motor body and is arranged in carrying out radiating water cooling plant to motor body, a serial communication port, motor heat dissipation control circuit includes:
the first temperature sampling circuit is used for detecting a motor temperature signal of the motor body;
the input end of the heat dissipation controller is connected with the output end of the first temperature sampling circuit; the heat dissipation controller is used for outputting a heat dissipation starting signal when the motor temperature corresponding to the motor temperature signal reaches a preset heat dissipation temperature;
the controlled end of the switching circuit is connected with the output end of the heat dissipation controller, the first end of the switching circuit is used for being connected with a power supply, and the second end of the switching circuit is used for being connected with the power supply end of the water cooling device; and the switching circuit is used for switching on according to the starting heat dissipation signal so as to drive the water cooling device to be electrified and operated and dissipate heat of the motor body.
Optionally, the heat dissipation control circuit of the motor further includes a frequency converter, and the heat dissipation controller is integrated in the frequency converter; the output end of the frequency converter is connected with the motor body, and the frequency converter is used for driving the motor body to operate.
Optionally, the frequency converter is further configured to send an alarm when the motor temperature corresponding to the motor temperature signal reaches a preset alarm temperature.
Optionally, the frequency converter is further configured to control the motor to stop operating when the motor temperature corresponding to the motor temperature signal reaches a preset shutdown temperature.
Optionally, the heat dissipation control circuit of the motor further includes a second temperature sampling circuit, and an output end of the second temperature sampling circuit is connected to the frequency converter;
the second temperature sampling circuit is used for detecting the temperature of the water cooling device and outputting a corresponding water cooling temperature signal to the frequency converter;
and the frequency converter is also used for giving an alarm when the temperature of the water cooling device corresponding to the water cooling temperature signal reaches a preset water cooling early warning temperature.
Optionally, the frequency converter includes a signal input module, the signal input module is connected to the heat dissipation controller, and the signal input module is configured to receive a preset heat dissipation temperature, a preset early warning temperature, and a preset shutdown temperature input by a user, and output the preset early warning temperature and the preset shutdown temperature to the heat dissipation controller, so that the heat dissipation controller controls the switch circuit according to the preset heat dissipation temperature, the preset early warning temperature, and the preset shutdown temperature.
Optionally, the first temperature sampling circuit includes a plurality of first temperature sensors, each of the first temperature sensors is configured to detect a winding temperature signal of a winding of the motor, and output ends of the first temperature sensors are respectively connected to the heat dissipation controller;
and the heat dissipation controller is used for outputting a starting heat dissipation signal when the winding temperature signal of any one winding reaches a preset heat dissipation temperature.
Optionally, the first temperature sampling circuit includes a plurality of second temperature sensors, each of the second temperature sensors is configured to detect temperature data of a bearing of the motor, and output ends of the second temperature sensors are respectively connected to the heat dissipation controller;
and the heat dissipation controller is used for outputting a heat dissipation starting signal when any one of the bearing temperature data reaches a preset heat dissipation temperature.
Optionally, the switching circuit comprises a DO signal receiving terminal and a contactor; the contactor comprises a coil, a first contact, a second contact and a third contact;
the DO signal receiving terminal is connected with the coil, first ends of the first contact, the second contact and the third contact are respectively connected with the power supply, and second ends of the first contact, the second contact and the third contact are respectively connected with a power supply end of the water cooling device;
and the DO signal receiving terminal is used for being switched on when the opening heat dissipation signal is received, so that the coil is electrified, and the first contact, the second contact and the third contact are all closed.
In addition, in order to achieve the above purpose, the utility model also provides a motor system, which comprises a motor body, a water cooling device and a motor heat dissipation control circuit; the motor heat dissipation control circuit is used for controlling the water cooling device to dissipate heat of the motor body according to the temperature of the motor body; the motor heat dissipation control circuit is configured as the motor heat dissipation control circuit described above.
The utility model discloses a set up first temperature sampling circuit and detect motor body's temperature to the motor temperature signal that the output corresponds to the heat dissipation controller, make the heat dissipation controller can confirm whether the motor temperature reaches and predetermines the radiating temperature, and the heat dissipation signal is opened in time output, and the control switch circuit switches on, makes the water cooling plant circular telegram, dispels the heat to the motor. Therefore, the heat dissipation controller is used for performing linkage control on the water cooling device according to the temperature of the motor, and when the temperature of the motor is too high, the heat dissipation controller can start the water cooling device to dissipate heat at the first time, so that the safety of the motor is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of an embodiment of a motor heat dissipation control circuit according to the present invention;
fig. 2 is a schematic block diagram of another embodiment of the heat dissipation control circuit of the motor of the present invention;
fig. 3 is a schematic diagram of a circuit structure of a part of an embodiment of the motor heat dissipation control circuit of the present invention;
fig. 4 is a schematic diagram of another circuit structure of an embodiment of the motor heat dissipation control circuit of the present invention.
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name(s) | |
| 100 | |
230 | |
|
| 200 | Motor heat |
240 | Second |
|
| 110 | |
231 | DO |
|
| 120 | |
232 | Contactor with a magnetic circuit having a |
|
| 210 | First temperature sampling circuit | | Circuit breaker | |
| 220 | Heat dissipation controller |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a motor heat dissipation control circuit, be applied to in the motor, refer to fig. 1, this motor 100 includes motor body 110 and is used for carrying out the water cooling plant 120 that dispels the heat to motor body 110, in an embodiment, motor heat dissipation control circuit 200 includes first temperature sampling circuit 210, heat dissipation controller 220 and switch circuit 230;
the input end of the heat dissipation controller 220 is connected with the output end of the first temperature sampling circuit 210; the heat dissipation controller 220 is configured to output a heat dissipation starting signal when the motor temperature corresponding to the motor temperature signal reaches a preset heat dissipation temperature;
a controlled end of the switch circuit 230 is connected to an output end of the heat dissipation controller 220, a first end of the switch circuit 230 is used for connecting to a power supply, and a second end of the switch circuit 230 is used for connecting to a power supply end of the water cooling device 120; the switch circuit 230 is configured to be turned on according to the heat dissipation signal, so as to drive the water cooling device 120 to be powered on and operate, and dissipate heat of the motor body 100.
The motor 100 may be a permanent magnet motor or the like equipped with a water cooling device 120 for heat dissipation. The heat dissipation Controller 220 may be a Programmable Controller such as a PLC (Programmable Logic Controller) or an MCU (micro Controller Unit). The water cooling device 120 may specifically include a water tank, a water pipe, a water pump, and the like, and after being powered on, the water cooling device 120 starts to operate, cooling water flows in from a water inlet and a water outlet of the water tank, and the heat of the motor body 100 is taken away by the flow of the cooling water, and the operation is stopped when the power is turned off.
Specifically, the first temperature sampling circuit 210 may acquire the temperature of the motor body 100 in real time or at regular time, and output a motor temperature signal to the heat dissipation controller 220, a preset heat dissipation temperature may be prestored in the heat dissipation controller 220, and the preset heat dissipation temperature may be set in combination with an actual situation, such as 80 ℃, 90 ℃ and the like; when the temperature of the motor is detected to reach the preset heat dissipation temperature, which indicates that the temperature of the motor is too high, the heat dissipation controller 220 outputs a heat dissipation starting signal to control the switch circuit 230 to be conducted, so that the water cooling device 120 is powered on to work to dissipate heat for the motor; when the motor temperature is detected to be lower than the heat dissipation temperature, which indicates that the motor temperature is within the safe range, the heat dissipation controller 220 may output a heat dissipation shutdown signal to control the switching circuit 230 to be turned off, so that the water cooling device 120 is powered off, thereby saving energy consumption.
In this embodiment, the temperature of the motor body 100 is detected by setting the first temperature sampling circuit 210, and a corresponding motor temperature signal is output to the heat dissipation controller 220, so that the heat dissipation controller 220 can determine whether the motor temperature reaches a preset heat dissipation temperature, and output a heat dissipation signal in time, and the control switch circuit 230 is turned on, so that the water cooling device 120 is powered on to dissipate heat of the motor. Therefore, the heat dissipation controller 220 performs linkage control on the water cooling device 120 according to the motor temperature, and when the motor temperature is too high, the heat dissipation controller 220 can start the water cooling device 120 to dissipate heat at the first time, so that the motor safety is ensured.
In an embodiment, the heat dissipation control circuit 200 further includes a frequency converter, the heat dissipation controller 220 is integrated in the frequency converter, an output end of the frequency converter is connected to the motor body 100, and the frequency converter is configured to drive the motor body 100 to operate.
In this embodiment, the heat dissipation controller 220 is integrated into the frequency converter, so that the frequency converter can perform linkage control on the water tank according to the temperature of the motor. When the heat dissipation controller 220 selects the PLC, its communication with the frequency converter may be combined with actual circuit settings, such as RS485 serial communication.
In an embodiment, the frequency converter is further configured to send an alarm when the motor temperature corresponding to the motor temperature signal reaches a preset alarm temperature.
The preset alarm temperature can be set according to actual conditions, such as 80 ℃, 85 ℃ or 90 ℃ and the like, and can be the same as or different from the preset heat dissipation temperature. It can be understood that, when the motor temperature corresponding to the motor temperature signal reaches the preset alarm temperature, the frequency converter may synchronously output a heat radiation starting signal, so that the water cooling apparatus 120 operates.
In an embodiment, the frequency converter is further configured to control the motor to stop operating when the motor temperature corresponding to the motor temperature signal reaches a preset shutdown temperature.
The preset shutdown temperature can be set according to actual conditions, such as 100 ℃, 110 ℃ and the like. When the motor temperature corresponding to the motor temperature signal reaches the preset shutdown temperature, the frequency converter can also synchronously output a starting heat dissipation signal, so that the water cooling device 120 works. It should be further noted that the frequency converter controls the motor to stop only when the temperature of the motor is detected to reach the preset stop temperature; even if the water cooling device 120 breaks down, as long as the motor temperature does not reach the shutdown temperature, the risk of damage can not be caused when the motor runs, and the frequency converter can still control the motor to run normally.
In an embodiment, the motor heat dissipation control circuit 200 further includes a second temperature sampling circuit 240, and an output end of the second temperature sampling circuit 240 is connected to the frequency converter; the second temperature sampling circuit 240 is configured to detect a temperature of the water cooling device 120 and output a corresponding water cooling temperature signal to the frequency converter; the frequency converter is also used for giving an alarm when the temperature of the water cooling device 120 corresponding to the water cooling temperature signal reaches a preset water cooling early warning temperature.
The water-cooling early warning temperature can also be set in combination with actual conditions, and the temperature of the water-cooling device 120 is detected, so that when the temperature of the water-cooling device 120 reaches the preset water-cooling early warning temperature, the fault of the water-cooling device 120 is determined, and an alarm is given at the moment, so that maintenance personnel can timely remove the fault.
In an embodiment, the frequency converter is further configured to send an alarm when the temperature of the water cooling device 120 corresponding to the water cooling temperature signal reaches the motor temperature corresponding to the motor temperature signal.
It can be understood that the temperature of the water cooling apparatus 120 is necessarily lower than the temperature of the motor in a normal condition, and when the temperature of the water cooling apparatus 120 is the same as the temperature of the motor or higher than the temperature of the motor, it can also be said that the water cooling apparatus 120 has a fault at this time, and an alarm needs to be sent at this time.
In one embodiment, the water cooling device 120 includes a water tank, and the second temperature sampling circuit 240 includes a third temperature sensor; the output end of the third temperature sensor is the output end of the second temperature sampling circuit 240; and the third temperature sensor is used for detecting the temperature of the water outlet of the water tank and outputting the temperature to the frequency converter as a corresponding water-cooling temperature signal.
In this embodiment, the third temperature sensor is disposed near the water outlet of the water tank and is used for detecting the temperature of the water outlet of the water tank, and when the water cooling device 120 works normally, the temperature of the water outlet of the water tank is similar to the temperature of the water inlet; when the water tank is abnormal due to impurities and the like, the temperature of the water outlet of the water tank is obviously higher, so that whether the water tank breaks down or not can be judged according to the temperature of the water outlet of the water tank, the temperature is used as the temperature of the water cooling device 120, and whether the water cooling device 120 works normally or not is detected based on the temperature.
Further, the second temperature sampling circuit 240 further includes a fourth temperature sensor; the output end of the fourth temperature sensor is connected with the frequency converter; the fourth temperature sensor is used for detecting a water inlet temperature signal of the water tank; the frequency converter is also used for giving an alarm when the water tank is determined to be abnormal according to the water inlet temperature corresponding to the water inlet temperature signal and the water outlet temperature corresponding to the water cooling temperature signal.
Because when the water tank is abnormal, the water outlet temperature can be obviously higher than the water inlet temperature, whether the water tank breaks down or not can be judged based on the water outlet temperature and the water inlet temperature, an alarm is given out when the water tank breaks down, and a maintainer is reminded of timely removing the fault, so that the motor cannot be cooled due to the fault of the water tank, and the motor is prevented from being damaged due to overhigh temperature.
In one embodiment, the signal input module is connected to the heat dissipation controller 220, and the signal input module is configured to receive a preset heat dissipation temperature, a preset pre-warning temperature and a preset shutdown temperature input by a user, and output the preset heat dissipation temperature, the preset pre-warning temperature and the preset shutdown temperature to the heat dissipation controller 220, so that the heat dissipation controller 220 controls the switch circuit 230 according to the preset heat dissipation temperature, the preset pre-warning temperature and the preset shutdown temperature.
The signal input module may be an input interface disposed on a touch screen of a frequency converter integrated with the heat dissipation controller 220, and is configured to receive a heat dissipation temperature input by a user as a preset heat dissipation temperature, receive an early warning temperature input by the user as a preset early warning temperature, and receive a shutdown temperature input by the user as a preset shutdown temperature, so that the heat dissipation controller 220 controls the water cooling apparatus 120 according to the preset heat dissipation temperature, the preset early warning temperature, and the preset shutdown temperature input by the user. The mode can save the workload of repeatedly burning the program due to the adjustment of the preset heat dissipation temperature, the early warning temperature and the shutdown temperature, and is convenient for users to adjust in combination with actual use scenes.
In an embodiment, the first temperature sampling circuit 210 includes at least a plurality of first temperature sensors, each of the first temperature sensors is configured to detect a winding temperature signal of a winding of the motor, and an output terminal of each of the first temperature sensors is connected to the heat dissipation controller 220; the heat dissipation controller 220 is configured to output a heat dissipation starting signal when a winding temperature signal of any one of the windings reaches a preset heat dissipation temperature.
Since the motor has three windings, correspondingly, the number of the first temperature sensors can be set to be a plurality. When the number of the first temperature sensors is two, the two third temperature sensors can be used for detecting the temperature data of any two-phase winding in the three-phase winding of the motor, and the frequency converter controls the water cooling device 120 according to the group with higher temperature in the two groups of temperature signals. When the number of the first temperature sensors is three, the three third temperature sensors can be used for respectively detecting the three-phase winding temperature signals of the motor, and the frequency converter controls the water cooling device 120 according to a group of the three groups of temperature signals with the highest temperature, so that the frequency converter can identify the phase winding when the temperature of any phase winding is too high, and the water cooling device 120 can be controlled to dissipate heat in time.
In another embodiment, the first temperature sampling circuit 210 includes a plurality of second temperature sensors, each of the second temperature sensors is configured to detect a bearing temperature data of the motor, and an output end of each of the second temperature sensors is connected to the heat dissipation controller 220; the heat dissipation controller 220 is configured to output a heat dissipation starting signal when any one of the bearing temperature data reaches a preset heat dissipation temperature.
In this embodiment, the second temperature sensor is arranged to detect the bearing temperature of the motor, and the bearing temperature is used as the motor body temperature, so that the frequency converter can control the operation of the water cooling device 120 in time according to the motor bearing temperature, the motor body 100 can be cooled in time, and the safety of the motor is protected.
Specifically, when the number of the second temperature sensors is two, the two temperature sensors can be respectively used for detecting the front and rear bearing temperatures of the motor, one of the two temperature sensors outputs a front bearing temperature signal, the other one of the two temperature sensors outputs a rear bearing temperature signal, and the frequency converter controls the water cooling device 120 according to a higher temperature of the two bearing temperatures, that is, when the temperature of any one of the bearings reaches a preset heat dissipation temperature, the frequency converter can control the water cooling device 120 to dissipate heat, so that the motor is protected.
In another embodiment, the first temperature sampling circuit 210 may include three first sensors for respectively detecting the temperatures of three windings of the motor, two second sensors for detecting the temperatures of the front and rear bearings of the motor, and a third sensor and a fourth sensor for respectively detecting the temperatures of the water inlet and the water outlet of the water tank, and the timeliness of the heat dissipation control of the motor may be improved by disposing a plurality of sensors at different positions. Furthermore, all the sensors can be arranged on the same PTE board, and each output end is respectively connected to each input end of the PLC. Referring to fig. 3, eight input ends of the PLC are respectively connected to eight temperature detection signals (one of them is standby) output by the PTE board, and the PLC outputs a signal to the frequency converter through the RS485 communication end.
The frequency converter can send out an alarm when the temperature detected by any one of a first sensor for detecting the temperature of three windings of the motor and two second temperature sensors for detecting the temperature of front and rear bearings of the motor reaches a preset alarm temperature; and when the temperature detected by any one of the three sensors for detecting the temperature of the three windings of the motor and the two sensors for detecting the temperature of the front bearing and the rear bearing of the motor reaches a preset shutdown temperature, controlling the motor to stop running.
Because the frequency converter can normally receive eight temperature detection signals, if the situation that three or more signals cannot be received occurs, the PTE board breaks down at the moment, and the frequency converter can stop running and give an alarm.
Referring to fig. 4, in an embodiment, the switch circuit 230 includes a DO signal receiving terminal 231 and a contactor 232; the contactor 232 includes a coil KM1, a first contact K1, a second contact K2, and a third contact K3;
the DO signal receiving terminal 231 is connected with the coil KM1, first ends of the first contact K1, the second contact K2 and the third contact K3 are respectively connected with a power supply, and second ends of the first contact K1, the second contact K2 and the third contact K3 are respectively connected with a power supply end of the water cooling device 120; the DO signal receiving terminal is switched on when receiving the heat dissipation opening signal, so that the coil KM1 is switched on, the first contact K1, the second contact K2 and the third contact K3 are all closed, and the power supply supplies power to the water cooling device 120 through the first contact K1, the second contact K2 and the third contact K3.
Further, the switch circuit 230 further includes a breaker QF disposed at the first ends of the power supply and the first, second, and third contacts K1, K2, and K3.
Based on the hardware structure, the frequency converter and the water cooling device 120 of the motor can be combined, real-time monitoring control of the frequency converter on the temperature of a motor bearing, a winding and the water cooling device 120 is achieved, the water cooling device 120 is controlled to work in time, the motor is not over-temperature, and safety of the motor is guaranteed.
The utility model also provides a motor system, which comprises a motor body, a water cooling device and a motor heat dissipation control circuit; the motor heat dissipation control circuit is used for controlling the water cooling device to dissipate heat of the motor body according to the temperature of the motor body, and the structure of the motor heat dissipation control circuit can refer to the above embodiment and is not described again. It should be understood that, since the motor system of the embodiment adopts the technical scheme of the motor heat dissipation control circuit, the motor system has all the beneficial effects of the motor heat dissipation control circuit.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the same way in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a motor heat dissipation control circuit, is applied to in the motor, the motor includes motor body and is used for carrying out radiating water cooling plant to motor body, its characterized in that, motor heat dissipation control circuit includes:
the first temperature sampling circuit is used for detecting a motor temperature signal of the motor body;
the input end of the heat dissipation controller is connected with the output end of the first temperature sampling circuit; the heat dissipation controller is used for outputting a heat dissipation starting signal when the motor temperature corresponding to the motor temperature signal reaches a preset heat dissipation temperature;
the controlled end of the switch circuit is connected with the output end of the heat dissipation controller, the first end of the switch circuit is used for being connected with a power supply, and the second end of the switch circuit is used for being connected with the power supply end of the water cooling device; and the switching circuit is used for switching on according to the starting heat dissipation signal so as to drive the water cooling device to be electrified and operated and dissipate heat of the motor body.
2. The motor heat dissipation control circuit of claim 1, further comprising a frequency converter, the heat dissipation controller being integrated into the frequency converter; the output end of the frequency converter is connected with the motor body, and the frequency converter is used for driving the motor body to operate.
3. The motor heat dissipation control circuit of claim 2, wherein the frequency converter is further configured to issue an alarm when the motor temperature corresponding to the motor temperature signal reaches a preset alarm temperature.
4. The motor heat dissipation control circuit of claim 2, wherein the frequency converter is further configured to control the motor to stop operating when a motor temperature corresponding to the motor temperature signal reaches a preset shutdown temperature.
5. The motor heat dissipation control circuit of claim 2, further comprising a second temperature sampling circuit, an output of the second temperature sampling circuit being connected to the frequency converter;
the second temperature sampling circuit is used for detecting the temperature of the water cooling device and outputting a corresponding water cooling temperature signal to the frequency converter;
the frequency converter is also used for giving an alarm when the temperature of the water cooling device corresponding to the water cooling temperature signal reaches a preset water cooling early warning temperature.
6. The motor heat dissipation control circuit according to any one of claims 2 to 4, wherein the frequency converter comprises a signal input module, the signal input module is connected to the heat dissipation controller, and the signal input module is configured to receive a preset heat dissipation temperature, a preset early warning temperature, and a preset shutdown temperature input by a user and output the preset heat dissipation temperature, the preset early warning temperature, and the preset shutdown temperature to the heat dissipation controller, so that the heat dissipation controller controls the switch circuit according to the preset heat dissipation temperature, the preset early warning temperature, and the preset shutdown temperature.
7. The motor heat dissipation control circuit of claim 1, wherein the first temperature sampling circuit comprises a plurality of first temperature sensors, each of the first temperature sensors is configured to detect a winding temperature signal of one winding of the motor, and output terminals of the first temperature sensors are respectively connected to the heat dissipation controller;
and the heat dissipation controller is used for outputting a starting heat dissipation signal when the winding temperature signal of any one winding reaches a preset heat dissipation temperature.
8. The motor heat dissipation control circuit of claim 1, wherein the first temperature sampling circuit comprises a plurality of second temperature sensors, each of the second temperature sensors is configured to detect temperature data of a bearing of the motor, and output terminals of the second temperature sensors are respectively connected to the heat dissipation controller;
and the heat dissipation controller is used for outputting a heat dissipation starting signal when any one of the bearing temperature data reaches a preset heat dissipation temperature.
9. The motor heat dissipation control circuit of claim 1, wherein the switching circuit comprises a DO signal receiving terminal and a contactor; the contactor comprises a coil, a first contact, a second contact and a third contact;
the DO signal receiving terminal is connected with the coil, first ends of the first contact, the second contact and the third contact are respectively connected with the power supply, and second ends of the first contact, the second contact and the third contact are respectively connected with a power supply end of the water cooling device;
the DO signal receiving terminal is used for being connected when the opening heat dissipation signal is received, the coil is electrified, and the first contact, the second contact and the third contact are all closed.
10. A motor system is characterized by comprising a motor body, a water cooling device and a motor heat dissipation control circuit;
the motor heat dissipation control circuit is used for controlling the water cooling device to dissipate heat of the motor body according to the temperature of the motor body; the motor heat dissipation control circuit is configured as the motor heat dissipation control circuit of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457262.7U CN217721057U (en) | 2022-06-10 | 2022-06-10 | Motor heat dissipation control circuit and motor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457262.7U CN217721057U (en) | 2022-06-10 | 2022-06-10 | Motor heat dissipation control circuit and motor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217721057U true CN217721057U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221457262.7U Active CN217721057U (en) | 2022-06-10 | 2022-06-10 | Motor heat dissipation control circuit and motor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217721057U (en) |
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2022
- 2022-06-10 CN CN202221457262.7U patent/CN217721057U/en active Active
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