Rotor detection device applied to energy recovery control system of new energy vehicle

Abstract

The utility model discloses a rotor detection device applied to an energy recovery control system of a new energy vehicle, and the device comprises a box body, at least one side of the box body is of an opening structure, and the opening is provided with a detachable cover plate; the encoder is arranged in the box body, and an input shaft of the encoder penetrates out of a through hole pre-formed in the box body and then is used for being connected with a rotor shaft of the motor; the environmental parameter detection mechanism is mounted in the box body and is used for detecting and outputting environmental parameters in the box body; the environment adjusting mechanism is arranged in the box body and used for adjusting the environment in the box body; and the control module is electrically connected to the environment adjusting mechanism and the environment parameter detection mechanism. The method has the effect of reducing the influence of various environmental factors on the rotor rotating speed detection precision in the vehicle driving process.

Description

Technical Field

[0001] The present application relates to the technical field of motor monitoring for new energy vehicles, and in particular to a rotor detection device applied to an energy recovery control system for new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use non-traditional fuels as a power source or do not completely rely on transmission fuel as a power source. In China, they mainly refer to electric vehicles and hybrid vehicles.

[0003] In order to extend the driving range of the above electric vehicles, in addition to improving battery technology, it can also be achieved through energy recovery. At present, energy recovery of new energy is achieved through motors, that is, the electric motor of the power source is converted into a "generator" when necessary to convert part of the kinetic energy of the vehicle during driving into electrical energy, which is stored and reused.

[0004] In order to transform the motor into a "generator" at the right time and improve the kinetic energy recovery efficiency, it is necessary to monitor the rotation of the motor's rotor, so a rotor speed detection device is needed. Existing rotor speed detection can be achieved through speed sensors, encoders, etc.

[0005] However, since it is used in automobiles rather than factory environments, extreme weather, collisions, and vibrations encountered during driving will cause more interference to encoders and affect their detection accuracy. Therefore, this application proposes a new technical solution. Utility Model Content

[0006] In order to reduce the impact of various environmental factors on the rotor speed detection accuracy during vehicle driving and ensure the kinetic energy recovery effect of new energy vehicles, the present application provides a rotor detection device applied to the energy recovery control system of new energy vehicles.

[0007] The present application provides a rotor detection device applied to an energy recovery control system of a new energy vehicle, which adopts the following technical solution:

[0008] A rotor detection device applied to an energy recovery control system of a new energy vehicle, comprising:

[0009] A box body, at least one side of which is an open structure and a detachable cover plate is installed at the opening;

[0010] The encoder is arranged in the box body and the input shaft thereof passes through a through hole pre-opened in the box body and is used to connect with the rotor shaft of the motor;

[0011] An environmental parameter detection mechanism is installed in the box body and is used to detect the environmental parameters in the box body and output them;

[0012] An environment adjustment mechanism, which is disposed in the box body and is used to adjust the environment in the box body;

[0013] The control module is electrically connected to the environment adjustment mechanism and the environment parameter detection mechanism.

[0014] Optionally, a connecting bolt is passed through one side of the box body facing the connecting structure on the vehicle body, the connecting bolt is a heat-insulating bolt and a section extending out of the box body is sleeved with a spring.

[0015] Optionally, the environmental parameter detection mechanism includes a temperature sensor, and the environmental adjustment mechanism includes an electric heating unit.

[0016] Optionally, the environmental conditioning mechanism includes a heat exchange component, which includes an exchange tank and a pipe. The exchange tank is fixed in the box body and connected to the pipe. The pipe extends out of the box body and is equipped with a solenoid valve, which is connected to the control module; the external end of the pipe is used to connect to the cold and hot medium supply mechanism.

[0017] Optionally, the exchange tanks form a group of two and the two exchange tanks in the same group are interconnected by a pipe, each of the exchange tanks is connected to at least one pipe extending out of the box body, and one of the two exchange tanks in the same group enters the buffer tank as a medium, and the other flows out of the buffer tank as a medium.

[0018] Optionally, the heat exchange components are divided into two groups, one group is used for temperature increase exchange, and the other group is used for temperature decrease exchange; the two groups of heat exchange components are respectively located on both sides of the encoder.

[0019] Optionally, the heat exchange assembly for temperature exchange is connected to a heat pipe distributed around a motor housing of the vehicle.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1) The encoder is installed in the box, which can reduce the pollution of dust and other dirt to the encoder, reduce the probability of optical components being contaminated, and ensure the integrity of the signal;

[0022] 2) It can detect environmental information in the box body, so that the control module can be set and the environment in the box body can be actively regulated by the environmental regulation mechanism, such as temperature, to reduce the impact of the rotor speed and position when the vehicle is driving in various extreme weather environments; because high and low temperatures will cause changes in heat-sensitive components such as the encoder's code disk, affecting the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of this application;

[0024] Figure 2 It is a structural schematic diagram of the box body of the present application;

[0025] Figure 3 It is a control structure diagram of the control module of this application.

[0026] Explanation of the reference numerals: 1. Box body; 11. Connecting bolt; 12. Spring; 2. Encoder; 3. Environmental parameter detection mechanism; 4. Environmental adjustment mechanism; 41. Electric heating unit; 42. Heat exchange component; 421. Exchange tank; 422. Pipeline; 423. Solenoid valve; 5. Control module. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] The embodiment of the present application discloses a rotor detection device applied to an energy recovery control system of a new energy vehicle.

[0029] Reference Figure 1-3 The rotor detection device applied to the energy recovery control system of new energy vehicles includes a box body 1, a (rotary) encoder 2, an environmental parameter detection mechanism 3, an environmental adjustment mechanism 4 and a control module 5.

[0030] The box body 1 is a hollow rectangular parallelepiped structure with one side being an open structure, and a cover plate can be fixed by bolts at the opening of the box body 1. The box body 1 can be made of metal and each wall plate is a double-layer structure, and the middle of the interlayer is vacuum filled with rock wool to enhance the thermal insulation performance.

[0031] Encoder 2, i.e., photoelectric encoder, can be selected with accuracy that meets the use requirements; Encoder 2 is located in the box body 1 and has a mounting foot fixed on the body, the mounting foot is provided with a bolt, and the bolt is threadedly connected to the box body 1 for installation; the input shaft of encoder 2 passes through the through hole pre-opened on the box body 1 and is used to connect / interlock with the rotor shaft of the motor of the new energy vehicle to detect the speed and position of the rotor. The wire of encoder 2 can pass through the cover plate of the box body 1.

[0032] The environmental parameter detection mechanism 3 includes a temperature sensor and a humidity sensor. The two sensors can be separate or integrated temperature and humidity sensors. The environmental parameter detection mechanism 3 is used to detect the temperature / humidity in the box body 1 and output it.

[0033] The control module 5 can be an MCU controller; the whole vehicle control system of the new energy vehicle has an MCU controller, which can be selected as the control module 5 when necessary; the environmental parameter detection mechanism 3 is electrically connected to the control module 5 to feedback the corresponding environmental monitoring parameters.

[0034] The control module 5 is also electrically connected to the environment regulating mechanism 4 , which is disposed in the box body 1 and is used to regulate the environment in the box body 1 ; based on the above arrangement, the temperature and humidity in the box body 1 may be regulated.

[0035] According to the above settings, this application:

[0036] 1) The encoder 2 is installed in the box body 1, which can reduce the pollution of dust and other dirt to the encoder 2, reduce the probability of optical components being contaminated, and ensure the integrity of the signal;

[0037] 2) It is possible to detect environmental information in the box body 1, so that the control module 5 can be set to actively adjust the environment in the box body 1 using the environmental adjustment mechanism 4, such as temperature, to reduce the impact of the rotor speed and position when the vehicle is driving in various extreme weather environments; because high and low temperatures will cause changes in heat-sensitive components such as the code disk of the encoder 2, affecting the detection accuracy.

[0038] In order to reduce the impact of vibration during the vehicle formation process, a connecting bolt 11 is penetrated on the side of the box body 1 facing the connecting structure (metal frame, etc.) on the vehicle body. The connecting bolt 11 is a heat-insulating bolt, that is, it is made of heat-insulating materials such as heat-insulating ceramics. A spring 12 is sleeved on a section of the connecting bolt 11 extending out of the box body 1. The connecting bolt 11 can be a structural threaded connecting nut passing through the vehicle body, and there is a spring 12 between the box body 1 and the vehicle body structure. The spring 12 can be used for shock absorption and buffering, reduce the vibration of the box body 1, and reduce the probability of the connecting bolt 11 breaking.

[0039] The above-mentioned environment adjustment mechanism 4 includes an electric heating unit 41, which is arranged in the box body 1. In this embodiment, the electric heating unit 41 is preferably a PTC heating element to reduce the risk of overheating. If the box body 1 also needs to be dehumidified when the humidity is too high to reduce the probability of damage to the electronic components, a plastic tube is penetrated through the box body 1, and an elastic membrane structure is fixed in the plastic tube, and small holes are opened on the membrane; in general, the holes on the membrane are sealed due to membrane contraction; when the gas in the box body 1 is heated to expand, the membrane bulges outward to expand and open the micropores to release hot air, and the hot air carries moisture, which can perform a certain degree of dehumidification.

[0040] In another embodiment of the present application, the environment adjustment mechanism 4 includes a heat exchange component 42 , and the heat exchange component 42 includes an exchange tank 421 and a pipe 422 .

[0041] The heat exchange tank 421 is a metal tank, which is fixed in the box body 1 and its height direction is parallel to the height direction of the encoder 2; assuming that the inner cavity of the box body 1 is rectangular when viewed from the front, the heat exchange tank 421 is located at the corner of the inner cavity of the box body 1; the structure and position design of the heat exchange tank 421 can make more effective use of the space in the box body 1 and increase the heat exchange area.

[0042] Assuming that one end of the heat exchange tank 421 faces the opening of the box body 1, the end is open and the end cap is threadedly connected. The openable design of the heat exchange tank 421 makes it easier to clean and discharge the medium during maintenance.

[0043] The heat exchange tank 421 is connected to a pipe 422, which extends out of the box body 1 and is equipped with a solenoid valve 423, which is electrically connected to the control module 5 for heat exchange control. The outer end of the pipe 422 is used to connect to the cold and hot medium supply mechanism.

[0044] In this embodiment, the medium can be heat transfer oil. Because it is a new energy vehicle rather than a fuel vehicle, there are certain differences in the cold and hot medium supply mechanisms, which will be explained with examples later.

[0045] In this embodiment, two exchange tanks 421 form a group and the two exchange tanks 421 in the same group are connected to each other through a pipe 422. Each exchange tank 421 is connected to at least one pipe 422 extending out of the box body 1. One of the two exchange tanks 421 in the same group enters the buffer tank as a medium, and the other flows out of the buffer tank as a medium.

[0046] According to the above arrangement, the medium can stay in the box body 1 for a relatively longer time, thereby increasing the heat exchange capacity.

[0047] There are two groups of heat exchange components 42, one group is used for temperature increase exchange, and the other group is used for temperature decrease exchange; the two groups of heat exchange components 42 are respectively located on both sides of the encoder 2.

[0048] According to the above settings, this application can actively cool down when the environment is high temperature, and actively heat up when the environment is low temperature, meeting more usage scenarios.

[0049] In one embodiment, the heat exchange assembly 42 for temperature exchange is connected to a heat pipe distributed around the motor housing of the vehicle.

[0050] It is understandable that in order to pump the medium liquid, the pipeline should also be connected to an infusion pump; according to the above, the two ends of the heat pipe are respectively connected to the two external ports of the heat exchange component 42 for temperature exchange to form a cycle, collect the heat generated by the motor when it is working for heat exchange, and save energy. The infusion pump, the heat pipe, and the motor are the corresponding cold and hot supply mechanisms.

[0051] In one embodiment, the heat supply mechanism of the heat exchange component 42 for cooling exchange is different from the above-mentioned heating. The difference is as follows: the heat pipe is designed to be connected downward to the metal armor at the bottom of the vehicle or to extend and coil in an exposed windward groove to use the wind when the vehicle is driving to carry away heat.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rotor detection device applied to an energy recovery control system of a new energy vehicle, characterized in that: include: A box body (1) having at least one side with an open structure and a detachable cover plate installed at the opening; An encoder (2) is arranged in the box body (1) and its input shaft passes through a through hole pre-opened on the box body (1) and is used to connect with the rotor shaft of the motor; An environmental parameter detection mechanism (3), which is installed on the box body (1) and is used to detect environmental parameters in the box body (1) and output them; An environment adjustment mechanism (4), which is arranged in the box body (1) and is used to adjust the environment in the box body (1); A control module (5) is electrically connected to the environment adjustment mechanism (4) and the environment parameter detection mechanism (3).

2. The rotor detection device applied to the energy recovery control system of new energy vehicles according to claim 1 is characterized in that: A connecting bolt (11) is passed through one side of the box body (1) facing the connecting structure on the vehicle body. The connecting bolt (11) is a heat-insulating bolt and a section extending out of the box body (1) is sleeved with a spring (12).

3. The rotor detection device applied to the energy recovery control system of new energy vehicles according to claim 1 is characterized in that: The environmental parameter detection mechanism (3) comprises a temperature sensor, and the environmental adjustment mechanism (4) comprises an electric heating unit (41).

4. The rotor detection device for the energy recovery control system of a new energy vehicle according to claim 1 is characterized in that: The environmental adjustment mechanism (4) comprises a heat exchange component (42), the heat exchange component (42) comprises an exchange tank (421) and a pipe (422), the exchange tank (421) is fixed in the box body (1) and connected to the pipe (422), the pipe (422) extends out of the box body (1) and is equipped with a solenoid valve (423), and the solenoid valve (423) is connected to the control module (5); the outer end of the pipe (422) is used to connect to a cold and hot medium supply mechanism.

5. The rotor detection device for the energy recovery control system of a new energy vehicle according to claim 4 is characterized in that: The exchange tanks (421) are grouped into two and the two exchange tanks (421) in the same group are connected to each other via a pipe (422). Each of the exchange tanks (421) is connected to at least one pipe (422) extending out of the box body (1). Of the two exchange tanks (421) in the same group, one enters the buffer tank as a medium and the other flows out of the buffer tank as a medium.

6. The rotor detection device applied to the energy recovery control system of new energy vehicles according to claim 4 is characterized in that: The heat exchange components (42) are divided into two groups, one group is used for temperature increase exchange, and the other group is used for temperature decrease exchange; the two groups of heat exchange components (42) are respectively located on both sides of the encoder (2).

7. The rotor detection device applied to the energy recovery control system of new energy vehicles according to claim 6 is characterized in that: The heat exchange component (42) for temperature exchange is connected to a heat pipe distributed around the motor housing of the vehicle.

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