Water pump communication module and water pump

Abstract

The utility model relates to a water pump communication module and a water pump. The water pump communication module comprises a first communication unit used for being in signal connection with the water pump control module; the first external communication interface is used for being in signal connection with external equipment; the second communication unit is used for being in signal connection with the water pump control module; the second external communication interface is used for being in signal connection with external equipment; the signal processing unit comprises a communication line, the first external communication interface and the second external communication interface are connected to the first end of the communication line in parallel, the first communication unit and the second communication unit are connected to the second end of the communication line in parallel, and the communication line is provided with a filtering subunit used for filtering interference signals in the communication line. According to the technical scheme, the water pump can be compatible with two communication modes through the water pump communication module to achieve real-time water pump control and water pump data collection.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, and in particular to a water pump communication module and a water pump. Background Art

[0002] Energy storage pumps are a new type of energy storage device that can use electricity to pump water to a higher-lying water tank to store energy. When the demand for electricity increases, the water in the water tank can be released to generate electricity to meet the demand for electricity. Due to the high efficiency, environmental protection, and renewable characteristics of energy storage pumps, they have been widely used in the energy field for peak load regulation, power grid reserves, and other aspects.

[0003] Energy storage water pumps can be powered by three-phase power. As energy storage equipment, real-time control and data collection are required for the pump body of the energy storage water pump. A water pump control module is generally set in the energy storage water pump to control the operation of the water pump according to the received control parameters, or adjust the operation of the water pump according to the operating parameters collected by the water pump, and feed back the operating parameters to the operator. However, it is generally inconvenient for operators to directly control the energy storage water pump, and the operating equipment used by the operator has different communication capabilities. Therefore, the water pump needs to be compatible with two communication methods to perform real-time control and data collection functions through long-distance communication. Utility Model Content

[0004] The utility model aims to provide a water pump communication module and a water pump, so that the water pump can be controlled in real time and water pump data can be collected through the water pump communication module.

[0005] To achieve the above object, the utility model provides a water pump communication module, comprising:

[0006] A first communication unit, used for signal connection with a water pump control module;

[0007] A first external communication interface, used for signal connection with an external device;

[0008] A second communication unit, used for signal connection with the water pump control module;

[0009] A second external communication interface, used for signal connection with an external device;

[0010] The signal processing unit includes a communication line, a first external communication interface and a second external communication interface are connected in parallel to a first end of the communication line, a first communication unit and a second communication unit are connected in parallel to a second end of the communication line, and a filtering subunit is arranged on the communication line for filtering out interference signals in the communication line.

[0011] Optionally, the first communication unit is a 485 communication circuit, and the second communication unit is a CAN communication circuit.

[0012] Optionally, the communication circuit includes a first circuit and a second circuit; the A terminal of the 485 communication circuit and the CANH terminal of the CAN communication circuit are connected in parallel to the first circuit; the B terminal of the 485 communication circuit and the CANL terminal of the CAN communication circuit are connected in parallel to the second circuit.

[0013] Optionally, the first external communication interface is a 485 interface, whose 485 interface A terminal is connected to the first line, and whose 485 interface B terminal is connected to the second line; the second external communication interface is a CAN interface, whose CAN interface CANH terminal is connected to the first line, and whose CAN interface CANL terminal is connected to the second line.

[0014] Optionally, the filtering subunit includes a first filtering component and a second filtering component; the first filtering component is used to filter out common-mode interference signals in the communication line; and the second filtering component is used to filter out high-frequency interference signals in the communication line.

[0015] Optionally, the first filtering component includes a first common-mode inductor and a second common-mode inductor; the first common-mode inductor is connected to the first line and the second line close to the first end of the communication line, and the second common-mode inductor is connected to the first line and the second line close to the second end of the communication line.

[0016] Optionally, the second filtering component includes a first capacitor and a second capacitor; the first capacitor is connected between the first circuit and ground, and the second capacitor is connected between the second circuit and ground.

[0017] Optionally, the signal processing unit further includes a protection submodule connected to the communication line for overvoltage protection on the communication line.

[0018] Optionally, the protection submodule includes a bidirectional TVS tube, which is respectively connected between the first line and the ground and between the second line and the ground.

[0019] The utility model also provides a water pump, comprising a water pump control module, and also comprising a water pump communication module provided by any embodiment, wherein the water pump control module is signal-connected with the water pump communication module.

[0020] As can be seen from the above, the technical solution provided by the utility model enables the water pump to be compatible with two communication modes through the water pump communication module to achieve real-time control of the water pump and collect water pump data, meeting the communication needs of the energy storage water pump. It improves the real-time control and data collection capabilities of the water pump in a remote environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of a water pump communication module provided by an embodiment of the utility model;

[0022] Figure 2 It is a circuit diagram of a water pump communication module provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a water pump provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0025] Some directional words are defined in the present utility model. Unless otherwise specified, the directional words used, such as "upper", "lower", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute limitations on the protection scope of the present utility model.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] This embodiment provides a water pump communication module, such as Figure 1As shown, the water pump communication module includes: a first communication unit, used for connecting to the water pump control module signal; a first external communication interface, used for connecting to the external device signal; a second communication unit, used for connecting to the water pump control module signal; a second external communication interface, used for connecting to the external device signal; a signal processing unit, including a communication line, the first external communication interface and the second external communication interface are connected in parallel to the first end of the communication line, the first communication unit and the second communication unit are connected in parallel to the second end of the communication line, and a filtering subunit is arranged on the communication line for filtering out interference signals in the communication line.

[0029] In one implementation, the first communication unit is a 485 communication circuit, and the second communication unit is a CAN communication circuit. The 485 communication circuit refers to an RS-485 chip and its peripheral circuits, and the CAN communication circuit refers to a CAN bus chip and its peripheral circuits. Figure 2 as shown in .

[0030] In one implementation, Figure 2 , the communication circuit includes a first circuit and a second circuit; the A terminal of the 485 communication circuit and the CANH terminal of the CAN communication circuit are connected in parallel to the first circuit; the B terminal of the 485 communication circuit and the CANL terminal of the CAN communication circuit are connected in parallel to the second circuit.

[0031] In one implementation, Figure 2 The first external communication interface is a 485 interface, whose 485 interface A terminal is connected to the first line, and whose 485 interface B terminal is connected to the second line; the second external communication interface is a CAN interface, whose CAN interface CANH terminal is connected to the first line, and whose CAN interface CANL terminal is connected to the second line.

[0032] In one implementation, the filtering subunit includes a first filtering component and a second filtering component; the first filtering component is used to filter out common-mode interference signals in the communication line; the second filtering component is used to filter out high-frequency interference signals in the communication line.

[0033] In one implementation, Figure 2 The first filtering component includes a first common-mode inductor L8 and a second common-mode inductor L1; the first common-mode inductor L8 is connected to the first line and the second line, close to the first end of the communication line, and the second common-mode inductor L1 is connected to the first line and the second line, close to the second end of the communication line.

[0034] In one implementation, Figure 2The second filtering component includes a first capacitor C3 and a second capacitor C7; the first capacitor C3 is connected between the first line and the ground, and the second capacitor C7 is connected between the second line and the ground.

[0035] In one implementation, the signal processing unit further includes a protection submodule connected to the communication line for overvoltage protection on the communication line.

[0036] In one implementation, the protection submodule includes a bidirectional TVS tube, which is connected between the first line and the ground and between the second line and the ground respectively. Figure 2 , two bidirectional TVS tubes D1 are used, which are connected between the first line and the ground and between the second line and the ground respectively.

[0037] The utility model also provides a water pump, such as Figure 3 As shown, it includes a water pump control module and any of the above-mentioned water pump communication modules, and the water pump control module is signal-connected with the water pump communication module.

[0038] Among them, the water pump can be a three-phase AC input water pump, which can be used as an energy storage water pump. The water pump is powered by three-phase AC, and the water pump control module controls the IGBT module through the drive circuit to supply power to the motor M. During the operation of the water pump, the water pump control module also samples parameters such as current, voltage, IGBT temperature, and ambient temperature, which can be fed back to the host computer through the water pump communication module. The operator can learn the operating status of the water pump through the host computer. The water pump control module receives control instructions through the water pump communication module, and the external 485 / CAN communication signal enters the 485 / CAN transceiver. The 485 / CAN circuit converts the input communication signal; the converted 485 / CAN signal enters the water pump control module for processing, and the water pump control module feeds back the collected parameter information to the external host computer through the 485 / CAN signal.

[0039] The embodiment of the utility model proposes a simple three-phase AC input water pump compatible with both 485 and CAN communication functions, realizes the collection and control of the water pump status, and improves the real-time control and data collection capabilities of the three-phase AC input energy storage water pump body in a remote environment.

[0040] Although the utility model has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A water pump communication module, It is characterized in that include: A first communication unit, used for signal connection with a water pump control module; A first external communication interface, used for signal connection with an external device; A second communication unit, used for signal connection with the water pump control module; A second external communication interface, used for signal connection with an external device; The signal processing unit includes a communication line, a first external communication interface and a second external communication interface are connected in parallel to a first end of the communication line, a first communication unit and a second communication unit are connected in parallel to a second end of the communication line, and a filtering subunit is arranged on the communication line for filtering out interference signals in the communication line.

2. The water pump communication module according to claim 1, It is characterized in that The first communication unit is a 485 communication circuit, and the second communication unit is a CAN communication circuit.

3. The water pump communication module according to claim 2, It is characterized in that The communication circuit includes a first circuit and a second circuit; the A terminal of the 485 communication circuit and the CANH terminal of the CAN communication circuit are connected in parallel to the first circuit; the B terminal of the 485 communication circuit and the CANL terminal of the CAN communication circuit are connected in parallel to the second circuit.

4. The water pump communication module according to claim 3, It is characterized in that The first external communication interface is a 485 interface, whose 485 interface A terminal is connected to the first line, and whose 485 interface B terminal is connected to the second line; the second external communication interface is a CAN interface, whose CAN interface CANH terminal is connected to the first line, and whose CAN interface CANL terminal is connected to the second line.

5. The water pump communication module according to claim 4, It is characterized in that The filtering subunit includes a first filtering component and a second filtering component; the first filtering component is used to filter out common-mode interference signals in the communication line; the second filtering component is used to filter out high-frequency interference signals in the communication line.

6. The water pump communication module according to claim 5, It is characterized in that The first filtering component includes a first common-mode inductor and a second common-mode inductor; the first common-mode inductor is connected to the first line and the second line close to the first end of the communication line, and the second common-mode inductor is connected to the first line and the second line close to the second end of the communication line.

7. The water pump communication module according to claim 5, It is characterized in that The second filtering component includes a first capacitor and a second capacitor; the first capacitor is connected between the first line and the ground, and the second capacitor is connected between the second line and the ground.

8. The water pump communication module according to claim 3, It is characterized in that The signal processing unit further comprises a protection submodule connected to the communication line for overvoltage protection on the communication line.

9. The water pump communication module according to claim 8, It is characterized in that The protection submodule includes a bidirectional TVS tube, which is respectively connected between the first line and the ground and between the second line and the ground.

10. A water pump, comprising a water pump control module, It is characterized in that It also includes the water pump communication module according to any one of claims 1 to 9, and the water pump control module is signal-connected to the water pump communication module.

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