Signal acquisition structure of motor

Abstract

The utility model provides a signal acquisition structure of a motor, which comprises a motor and a controller, and is characterized in that a first PCB (Printed Circuit Board) and a second PCB are arranged in the motor; the first PCB is provided with a first CAN high pin, a first CAN low pin and a first grounding pin; the second PCB is provided with a second CAN high pin, a second CAN low pin, a third CAN high pin, a third CAN low pin, a second grounding pin and a third grounding pin; the controller is provided with a fourth CAN high pin, a fourth CAN low pin and a fourth grounding pin. According to the utility model, the first PCB, the second PCB and the controller are all provided with the CAN high pins and the CAN low pins, the first PCB, the second PCB and the controller are connected by adopting a CAN communication protocol, and when more signals are added subsequently, each signal does not need to correspond to one data line, but a plurality of signals correspond to two CAN communication lines, so that the number of the CAN communication lines is reduced, and the cost is reduced. The technical effects of multiple signals, reduction of signal lines, reduction of system wiring difficulty and reduction of overall complexity are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor field, concretely, a signal acquisition structure of motor, especially, a signal acquisition and transmission mode's application of integrated two PCB hall board and internal variable speed function. BACKGROUND

[0002] The signal connection of the traditional motor and the external controller is as shown in the drawing, the traditional motor internal hall signal acquisition and transmission are a PCB, the speed and temperature signal are transmitted through the signal line, and the signal flow is: temperature and speed signal: the speed and temperature signal are collected by the PD3 PCB board speed hall and NTC thermistor device and are transmitted to the controller MCU through the signal line. Figure 1 If other signal flows are wanted to be added, other signal lines need to be additionally increased, and several signal lines need to be additionally increased with the increase of the signal flows. UTILITY MODEL CONTENT

[0003] In view of the defects in the prior art, the utility model aims at providing a signal acquisition structure of motor.

[0004] According to the signal acquisition structure of motor, the motor is internally provided with a first PCB board and a second PCB board.

[0005] The first PCB board has a first CAN high pin, a first CAN low pin and a first ground pin.

[0006] The second PCB board has a second CAN high pin, a second CAN low pin, a third CAN high pin, a third CAN low pin, a second ground pin and a third ground pin.

[0007] The controller has a fourth CAN high pin, a fourth CAN low pin and a fourth ground pin.

[0008] The first CAN high pin and the second CAN high pin are connected through wires, the first CAN low pin and the second CAN low pin are connected through wires, and the first ground pin and the second ground pin are connected through wires.

[0009] The third CAN high pin and the fourth CAN high pin are connected through wires, the third CAN low pin and the fourth CAN low pin are connected through wires, and the third ground pin and the fourth ground pin are connected through wires.

[0010] Preferably, the first PCB further has a temperature signal receiving pin; the second PCB further has a temperature signal sending pin; the temperature signal receiving pin and the temperature signal sending pin are connected by a wire.

[0011] Preferably, the first PCB further has a first voltage sending pin, and the second PCB further has a first voltage receiving pin; the first voltage sending pin and the first voltage receiving pin are connected by a wire.

[0012] Preferably, the first PCB further has a second voltage receiving pin, and the second PCB further has a second voltage sending pin; the second voltage receiving pin and the second voltage sending pin are connected by a wire.

[0013] Preferably, the second PCB further has an A signal receiving pin, a B signal receiving pin, and a C signal receiving pin.

[0014] The controller further has an A signal sending pin, a B signal sending pin, and a C signal sending pin.

[0015] The A signal receiving pin, the B signal receiving pin, and the C signal receiving pin are respectively connected to the A signal sending pin, the B signal sending pin, and the C signal sending pin by wires.

[0016] Preferably, the second PCB further has an HA signal sending pin, an HB signal sending pin, and an HC signal sending pin.

[0017] The controller further has an HA signal receiving pin, an HB signal receiving pin, and an HC signal receiving pin.

[0018] The HA signal sending pin, the HB signal sending pin, and the HC signal sending pin are respectively connected to the HA signal receiving pin, the HB signal receiving pin, and the C signal receiving pin by wires.

[0019] Preferably, the second PCB further has a third voltage receiving pin, and the controller further has a third voltage sending pin.

[0020] The third voltage receiving pin and the third voltage sending pin are connected by a wire.

[0021] Preferably, the first voltage of the first voltage sending pin is 5V.

[0022] Preferably, the second voltage of the second voltage sending pin is 36V or 48V.

[0023] Preferably, the third voltage of the third voltage sending pin is 36V or 48V.

[0024] Compared with the prior art, the utility model has the beneficial effects as follows:

[0025] The utility model discloses a technical means that CAN high pin, CAN low pin are arranged on the first PCB board, second PCB board and controller, adopt CAN communication protocol and connect the first PCB board, second PCB board and controller, when more signals are added subsequently, do not need each signal to correspond a data line, but multiple signals all correspond the two lines of CAN communication, realize that the signal line is reduced to multiple signals, reduce system wiring difficulty, reduce the technical effect of overall complexity degree. BRIEF DESCRIPTION OF DRAWINGS

[0026] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non - limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 It is the structural schematic diagram of prior art;

[0028] Figure 2 It is the structural schematic diagram of the utility model;

[0029] Figure 3 It is the circuit board function circuit module diagram of second PCB board.

[0030] The drawings show:

[0031] DETAILED DESCRIPTION

[0032] The utility model will be explained in detail below in combination with specific embodiment. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the utility model concept, can also make a number of changes and improvements. These all belong to the protection scope of the utility model.

[0033] The utility model provides a kind of signal acquisition structure of motor, as shown in Figure 2 It includes motor 1 and controller 2, the motor 1 is provided with first PCB board 11, second PCB board 12 inside;The first PCB board 11 has first CAN high pin 111, first CAN low pin 112, first ground pin 113;

[0034] The second PCB board 12 has second CAN high pin 121, second CAN low pin 122, third CAN high pin 123, third CAN low pin 124, second ground pin 125 and third ground pin 126;

[0035] The controller 2 has a fourth CAN high pin 21, a fourth CAN low pin 22 and a fourth ground pin 23;

[0036] The first CAN high pin 111 is connected to the second CAN high pin 121 through a wire; the first CAN low pin 112 is connected to the second CAN low pin 122 through a wire; the first ground pin 113 is connected to the second ground pin 125 through a wire;

[0037] The third CAN high pin 123 is connected to the fourth CAN high pin 21 through a wire; the third CAN low pin 124 is connected to the fourth CAN low pin 22 through a wire; the third ground pin 126 is connected to the fourth ground pin 23 through a wire.

[0038] The first PCB board 11 further has a temperature signal receiving pin 114; the second PCB board 12 further has a temperature signal sending pin 127; the temperature signal receiving pin 114 is connected to the temperature signal sending pin 127 through a wire. The first PCB board 11 further has a first voltage sending pin 115; the second PCB board 12 further has a first voltage receiving pin 128; the first voltage sending pin 115 is connected to the first voltage receiving pin 128 through a wire; the first voltage is 5V.

[0039] The first PCB board 11 further has a second voltage receiving pin 116; the second PCB board 12 further has a second voltage sending pin 129; the second voltage receiving pin 116 is connected to the second voltage sending pin 129 through a wire; the second voltage is 36V or 48V.

[0040] The second PCB board 12 further has an A signal receiving pin 1210, a B signal receiving pin 1211 and a C signal receiving pin 1212; the controller 2 further has an A signal sending pin 24, a B signal sending pin 25 and a C signal sending pin 26; the A signal receiving pin 1210, the B signal receiving pin 1211 and the C signal receiving pin 1212 are respectively connected to the A signal sending pin 24, the B signal sending pin 25 and the C signal sending pin 26 through wires;

[0041] The second PCB board 12 further has an HA signal sending pin 1213, an HB signal sending pin 1214 and an HC signal sending pin 1215; the controller 2 further has an HA signal receiving pin 27, an HB signal receiving pin 28 and an HC signal receiving pin 29;

[0042] The HA signal output pin 1213, HB signal output pin 1214 and HC signal output pin 1215 are respectively connected to the HA signal receiving pin 27, HB signal receiving pin 28 and HC signal receiving pin 29 via wires.

[0043] The second PCB board 12 also has a third voltage receiving pin 1216, and the controller 2 also has a third voltage output pin 291; the third voltage receiving pin 1216 and the third voltage output pin 291 are connected by a wire. The third voltage is 36V or 48V.

[0044] The functional circuit module diagram of the second PCB board 12 is as follows: Figure 3 As shown, it includes three position Hall modules for detecting Hall positions, a thermistor for detecting temperature signals, a 5V protection circuit, and a power supply filter circuit.

[0045] In this invention, the acquisition and transmission of speed Hall signals, temperature signals, and gear position signals require two PCB boards; specifically, the speed Hall signals, temperature signals, and gear position signals are transmitted via CAN communication.

[0046] The signal flow of this utility model is:

[0047] Temperature signal: The data collected by the NTC thermistor device on the second PCB board 12 (i.e., PD2 PCB board) is sent to the MCU on the first PCB board 11 (i.e., PD1 PCB board) for processing. The MCU on PD1 PCB board sends the processed data to the MCU on the controller 2 via the CAN communication protocol.

[0048] Speed ​​Hall signal: After the speed Hall device on the first PCB board 11 (i.e. PD1PCB board) collects the motor speed, the MCU on the PD1PCB board processes the data and then sends the data to the controller MCU through the CAN communication protocol.

[0049] Gear signal: After the MCU of the controller receives the speed Hall signal data, it will convert it into a gear signal. The MCU of controller 2 will then send the gear signal to the PD1 PCB board using the CAN communication protocol.

[0050] Compared with the traditional motor structure, the utility model discloses a gear signal, therefore motor contains internal speed change function. This integrated two pieces of PCB hall board and internal speed change function, and use CAN communication protocol signal acquisition can collect a gear signal, and use CAN communication protocol transmission can guarantee signal stability characteristics. Integrated internal speed change function signal acquisition, with signal, signal stability characteristics, the utility model discloses can further design acquisition more signal, use CAN communication protocol guarantee signal stability, save signal line etc., especially in some application environment of signal acquisition, the utility model discloses has wide application prospect and space. Specifically, currently is with CAN communication protocol with two signal lines transmission speed temperature and gear signal, if continue to increase signal later, also can use CAN communication these two lines transmission multiple signals, namely increase to more signal, do not need each signal to correspond a data line, but multiple signals all correspond CAN communication these two lines, namely realize multiple signal reduction signal line, reduce system wiring difficulty, reduce the overall complexity degree technical effect.

[0051] Traditional one piece of hall board only collects speed and temperature signal, the utility model discloses integrated two pieces of PCB hall board in motor, in addition to the collection temperature and gear signal, still integrated internal speed change function collection speed. The utility model discloses use CAN communication protocol transmission speed, temperature and gear signal.

[0052] Compared with the traditional motor, the utility model discloses a PCB board, compared with the traditional hall board, the utility model discloses a gear signal, the utility model discloses an internal speed change function, compared with the traditional hall board signal transmission, the integrated internal speed change function signal transmission of this CAN communication, can make transmission more stable.

[0053] Summarized above, the utility model discloses integrated two pieces of PCB hall board and internal speed change function design increases the gear signal and replaces signal line transmission signal, use CAN communication protocol transmission signal, for later increase motor function, design multiple signal acquisition provides the basis, has wide application prospect.

[0054] In the description of the present application, it is understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0055] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A signal acquisition structure for a motor, characterized in that, It comprises a motor (1) and a controller (2), the motor (1) is internally provided with a first PCB board (11) and a second PCB board (12); The first PCB board (11) is provided with a first CAN high pin (111), a first CAN low pin (112) and a first ground pin (113); The second PCB board (12) is provided with a second CAN high pin (121), a second CAN low pin (122), a third CAN high pin (123), a third CAN low pin (124), a second ground pin (125) and a third ground pin (126); The controller (2) is provided with a fourth CAN high pin (21), a fourth CAN low pin (22) and a fourth ground pin (23); The first CAN high pin (111) and the second CAN high pin (121) are connected by wires; the first CAN low pin (112) and the second CAN low pin (122) are connected by wires; the first ground pin (113) and the second ground pin (125) are connected by wires; The third CAN high pin (123) and the fourth CAN high pin (21) are connected by wires; the third CAN low pin (124) and the fourth CAN low pin (22) are connected by wires; the third ground pin (126) and the fourth ground pin (23) are connected by wires.

2. The signal acquisition structure of an electric machine according to claim 1, characterized in that, The first PCB board (11) is further provided with a temperature signal receiving pin (114); the second PCB board (12) is further provided with a temperature signal sending pin (127); the temperature signal receiving pin (114) and the temperature signal sending pin (127) are connected by wires.

3. The signal acquisition structure of an electric machine according to claim 1, characterized in that, The first PCB board (11) is further provided with a first voltage sending pin (115), and the second PCB board (12) is further provided with a first voltage receiving pin (128); the first voltage sending pin (115) and the first voltage receiving pin (128) are connected by wires.

4. The signal acquisition structure of an electric machine according to claim 1, characterized in that, The first PCB board (11) is further provided with a second voltage receiving pin (116), and the second PCB board (12) is further provided with a second voltage sending pin (129); the second voltage receiving pin (116) and the second voltage sending pin (129) are connected by wires.

5. The signal acquisition structure of the electric machine according to claim 1, characterized in that, The second PCB board (12) is further provided with an A signal receiving pin (1210), a B signal receiving pin (1211) and a C signal receiving pin (1212); The controller (2) is further provided with an A signal sending pin (24), a B signal sending pin (25) and a C signal sending pin (26); The A signal receiving pin (1210), the B signal receiving pin (1211) and the C signal receiving pin (1212) are respectively connected to the A signal sending pin (24), the B signal sending pin (25) and the C signal sending pin (26) by wires.

6. The signal acquisition structure of an electric machine according to claim 1, characterized in that, The second PCB board (12) is further provided with an HA signal sending pin (1213), an HB signal sending pin (1214) and an HC signal sending pin (1215); The controller (2) further has an HA signal receiving pin (27), an HB signal receiving pin (28) and an HC signal receiving pin (29); The HA signal sending pin (1213), the HB signal sending pin (1214) and the HC signal sending pin (1215) are connected with the HA signal receiving pin (27), the HB signal receiving pin (28) and the HC signal receiving pin (29) respectively through wires.

7. The signal acquisition structure of an electric machine according to claim 1, characterized in that, The second PCB board (12) further has a third voltage receiving pin (1216), and the controller (2) further has a third voltage sending pin (291); The third voltage receiving pin (1216) is connected with the third voltage sending pin (291) through a wire.

8. The signal acquisition structure of an electric machine according to claim 3, characterized in that, The first voltage of the first voltage sending pin (115) is 5V.

9. The signal acquisition structure of an electric machine according to claim 4, characterized in that, The second voltage of the second voltage sending pin (129) is 36V or 48V.

10. The signal acquisition structure of an electric machine according to claim 7, characterized in that, The third voltage of the third voltage sending pin (291) is 36V or 48V.

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