Compressor inclination protection device, vehicle-mounted refrigerator, vehicle and control method

Abstract

The invention discloses a compressor inclination protection device, a vehicle-mounted refrigerator, a vehicle and a control method, and the compressor inclination protection device comprises an angle detection module which is suitable for detecting the inclination angle of a compressor; the shutdown timing module is suitable for triggering timing when the inclination angle of the compressor is larger than a first preset angle; the restart timing module is suitable for triggering timing when the inclination angle of the compressor is smaller than a second preset angle; the controller is suitable for controlling the compressor to stop when the stop timing module triggers timing and the timing duration is greater than a first preset duration; and the controller is suitable for controlling the compressor to recover operation when the timing module is restarted to trigger timing and the timing duration is greater than a second preset duration. The compressor inclination protection device can judge the angle based on the inclination working condition and control the compressor to start and stop in combination with the inclination time so as to protect the compressor, so that the service life of the compressor is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted refrigerators, in particular to a compressor inclination protection device, a vehicle-mounted refrigerator, a vehicle and a control method. BACKGROUND

[0002] Commercial vehicles such as trucks often need to spend the night and live on the vehicle during long-distance transportation. A vehicle-mounted refrigerator is an important device for increasing the functions of a vehicle, improving the comfort of a vehicle and realizing a life style of taking a vehicle as a home.

[0003] A truck provided with a vehicle-mounted refrigerator needs to be installed in the cab of the truck for storing food, drinks and other supplies.

[0004] In the related art, when a truck needs to be repaired due to engine failure, the entire cab needs to be flipped forward to expose the engine compartment below to facilitate personnel operation. At this time, the vehicle-mounted refrigerator located in the cab will be inclined with the vehicle head. This inclined state has limited impact on the operation of the refrigerator in a short time, but if the inclined state is maintained for a long time, the refrigerant in the compressor of the vehicle-mounted refrigerator is prone to displacement and backflow, resulting in poor lubrication of the compressor, abnormal load, and ultimately damage to the compressor. Therefore, it is necessary to design a corresponding compressor inclination protection device for this specific working condition. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a compressor inclination protection device capable of determining the angle based on the inclination working condition and controlling the start and stop of the compressor in combination with the inclination time to protect the compressor, thereby prolonging the service life of the compressor.

[0006] The present application also proposes a vehicle-mounted refrigerator having the compressor inclination protection device.

[0007] The present application also proposes a vehicle having the compressor inclination protection device or the vehicle-mounted refrigerator.

[0008] The present application also proposes a control method for the compressor inclination protection device using the compressor inclination protection device.

[0009] To achieve the above object, according to an embodiment of the first aspect of the present application, a compressor tilt protection device is provided, comprising: an angle detection module adapted to detect a tilt angle of the compressor; a shutdown timing module adapted to trigger timing when the tilt angle of the compressor is greater than a first predetermined angle; the shutdown timing module is adapted to not trigger timing when the tilt angle of the compressor is less than the first predetermined angle, the first predetermined angle being the maximum tilt angle allowed by the compressor; a restart timing module adapted to trigger timing when the tilt angle of the compressor is less than a second predetermined angle; the restart timing module is adapted to not trigger timing when the tilt angle of the compressor is greater than the second predetermined angle, the second predetermined angle being a safe tilt angle allowed by the compressor; a controller adapted to control the compressor to shut down when the shutdown timing module triggers timing and the timing duration is greater than a first predetermined duration, the compressor entering a shutdown protection state; the controller is adapted to control the compressor to resume operation when the restart timing module triggers timing and the timing duration is greater than a second predetermined duration; the first predetermined duration is a shutdown false trigger determination duration, and the second predetermined duration is a compressor recovery safe tilt angle determination duration.

[0010] The compressor tilt protection device according to the embodiment of the present application can determine the tilt angle based on the tilt working condition and control the compressor to start and stop to protect the compressor, thereby prolonging the service life of the compressor.

[0011] In addition, the compressor tilt protection device according to the above-mentioned embodiments of the present application can also have the following additional technical features: According to an embodiment of the present application, the angle detection module and the controller are integrated, and the angle detection module is adapted to be installed on the same or parallel installation reference surface as the compressor.

[0012] According to an embodiment of the present application, the angle detection module comprises an accelerometer, which is a three-axis accelerometer adapted to simultaneously measure acceleration components of the compressor in X, Y and Z directions and calculate the tilt angle of the compressor by analyzing the components of gravity in X, Y and Z directions through the controller.

[0013] According to an embodiment of the present application, the angle detection module comprises a gyroscope, which is a three-axis gyroscope adapted to simultaneously measure angular velocities of the compressor in X, Y and Z directions and obtain the tilt angle of the compressor by integral conversion through the controller.

[0014] According to an embodiment of the first aspect of the present application, the angle detection module comprises: an accelerometer, which is a three-axis accelerometer, adapted to measure acceleration components of the compressor in X, Y, Z directions simultaneously and calculate the inclination angle of the compressor by analyzing the components of gravity in X, Y, Z directions through the controller; a gyroscope, which is a three-axis gyroscope, adapted to measure angular velocities of the compressor in X, Y, Z directions simultaneously and calculate the inclination angle of the compressor by integral conversion through the controller; the three-axis accelerometer and the three-axis gyroscope form a six-axis sensor system, and the angle detection module combines the data of the three-axis accelerometer and the three-axis gyroscope based on a six-axis fusion algorithm, and calculates the inclination angle of the compressor through a complementary filter or a Kalman filter algorithm.

[0015] According to an embodiment of the second aspect of the present application, a vehicle refrigerator is provided, which comprises the compressor inclination protection device according to the embodiment of the first aspect of the present application.

[0016] According to the vehicle refrigerator of the embodiment of the present application, by using the compressor inclination protection device according to the embodiment of the first aspect of the present application, the inclination angle can be determined based on the inclination working condition, and the compressor can be controlled to start and stop in combination with the inclination time to protect the compressor, thereby prolonging the service life of the compressor.

[0017] According to an embodiment of the third aspect of the present application, a vehicle is provided, which comprises the compressor inclination protection device according to the embodiment of the first aspect of the present application or the vehicle refrigerator according to the embodiment of the second aspect of the present application.

[0018] According to the vehicle of the embodiment of the present application, by using the compressor inclination protection device according to the embodiment of the first aspect of the present application or the vehicle refrigerator according to the embodiment of the second aspect of the present application, the inclination angle can be determined based on the inclination working condition, and the compressor can be controlled to start and stop in combination with the inclination time to protect the compressor, thereby prolonging the service life of the compressor.

[0019] According to an embodiment of the fourth aspect of the present application, a control method of a compressor inclination protection device is provided, which uses the compressor inclination protection device according to the embodiment of the first aspect of the present application, and comprises the following steps: S1, initializing the angle detection module; S2, detecting the inclination angle of the compressor by the angle detection module; S3, triggering the timing by the shutdown timing module when the inclination angle of the compressor is greater than a first predetermined angle; S31, the controller controls the compressor to stop when the stop timing module triggers timing and the timing duration is greater than a first predetermined duration, and the compressor enters a stop protection state; S4, the stop timing module does not trigger timing when the inclination angle of the compressor is less than a first predetermined angle; S5, the restart timing module triggers timing when the inclination angle of the compressor is less than a second predetermined angle; S51, the controller controls the compressor to resume operation when the restart timing module triggers timing and the timing duration is greater than a second predetermined duration; S6, the restart timing module does not trigger timing when the inclination angle of the compressor is greater than a second predetermined angle.

[0020] According to the control method of the compressor inclination protection device according to the embodiment of the present application, by using the compressor inclination protection device according to the embodiment of the first aspect of the present application, the compressor start-stop can be controlled based on the inclination working condition determination angle and combined with the inclination time to protect the compressor, thereby prolonging the service life of the compressor.

[0021] According to an embodiment of the present application, the angle detection module includes a six-axis sensor system formed by a three-axis accelerometer and a three-axis gyroscope, and the step S1 includes: S11, the angle detection module performs sensor initialization IMU calibration; S12, read the six-axis sensor data of the angle detection module.

[0022] According to an embodiment of the present application, the step S2 includes: S21, the six-axis sensor data of the angle detection module is fused; S22, the data of the three-axis accelerometer and the three-axis gyroscope are combined based on a six-axis fusion algorithm, and the inclination angle of the compressor is calculated by a complementary filter or a Kalman filter algorithm.

[0023] According to an embodiment of the present application, the step S31 further includes: After the compressor enters the stop protection state, the controller records the fault state of the compressor as "inclination protection trigger".

[0024] According to an embodiment of the present application, the step S51 further includes: After the compressor resumes operation, the fault state of the compressor is cleared.

[0025] According to an embodiment of the present application, the first predetermined angle is 30 degrees, and the first predetermined duration is 3 seconds.

[0026] According to one embodiment of the present application, the second predetermined angle is 15 degrees and the second predetermined time length is 5 minutes.

[0027] Additional aspects and advantages of the present application will be made apparent from the following description of embodiments of the application, which is given by way of example only. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood through consideration of the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a structural schematic diagram of a compressor tilt protection device according to an embodiment of the present application.

[0029] Figure 2 is a flowchart of a control method of a compressor tilt protection device according to an embodiment of the present application.

[0030] Figure 3 is a flowchart of a control method of a compressor tilt protection device according to one specific embodiment of the present application.

[0031] Figure 4 is a whole schematic diagram of a compressor tilt protection device according to an embodiment of the present application installed on a vehicle-mounted refrigerator.

[0032] Reference signs: 1, vehicle-mounted refrigerator; 10, controller; 20, compressor; 30, angle detection module; 40, shutdown timing module; 50, restart timing module. DETAILED DESCRIPTION

[0033] The present application is made based on the discovery and realization of the following facts and problems: In the related art, when a truck needs to be repaired due to engine failure, the entire cab needs to be tilted forward to expose the lower engine compartment for personnel to operate. At this time, the vehicle-mounted refrigerator located in the cab will tilt with the vehicle head. This tilting state has limited impact on the refrigerator operation in a short time, but if it is kept in a tilted state for a long time, the refrigerant in the compressor of the vehicle-mounted refrigerator is prone to displacement and backflow, resulting in poor lubrication of the compressor, abnormal load, and ultimately causing damage to the compressor. Therefore, it is necessary to design a corresponding compressor tilt protection device for this specific working condition.

[0034] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The compressor tilt protection device according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0037] like Figures 1-4 As shown, the compressor tilt protection device according to an embodiment of the present invention includes an angle detection module 30, a stop timing module 40, a restart timing module 50, and a controller 10.

[0038] The angle detection module 30 is suitable for detecting the tilt angle of the compressor 20; The shutdown timing module 40 is adapted to trigger timing when the tilt angle of the compressor 20 is greater than a first predetermined angle; The shutdown timing module 40 is adapted not to trigger timing when the tilt angle of the compressor 20 is less than a first predetermined angle, where the first predetermined angle is the maximum allowable tilt angle of the compressor 20. The restart timing module 50 is adapted to trigger timing when the tilt angle of the compressor 20 is less than a second predetermined angle. The restart timing module 50 is adapted not to trigger timing when the tilt angle of the compressor 20 is greater than a second predetermined angle, where the second predetermined angle is the safe tilt angle allowed by the compressor 20; The controller 10 is adapted to control the compressor 20 to stop when the shutdown timing module 40 triggers timing and the timing duration is longer than a first predetermined duration, and the compressor 20 enters a shutdown protection state. The controller 10 is adapted to control the compressor 20 to resume operation when the restart timing module 50 triggers timing and the timing duration is greater than the second predetermined duration. The first predetermined duration is the shutdown mis-touch determination duration, and the second predetermined duration is the compressor 20 resume safe inclination determination duration.

[0039] The working process of the compressor inclination protection device according to the embodiment of the application will be described below with reference to the accompanying drawings. Figures 1-4 The working process of the compressor inclination protection device according to the embodiment of the application will be described below with reference to the accompanying drawings.

[0040] The angle detection module 30 detects the inclination angle of the compressor 20.

[0041] The shutdown timing module 40 triggers timing when the inclination angle of the compressor 20 is greater than the first predetermined angle. The controller 10 controls the compressor 20 to stop when the shutdown timing module 40 triggers timing and the timing duration is greater than the first predetermined duration, and the compressor 20 enters the shutdown protection state.

[0042] The shutdown timing module 40 does not trigger timing when the inclination angle of the compressor 20 is less than the first predetermined angle.

[0043] After the compressor 20 enters the shutdown protection state, the restart timing module 50 triggers timing when the inclination angle of the compressor 20 is less than the second predetermined angle. The controller 10 controls the compressor 20 to resume operation when the restart timing module 50 triggers timing and the timing duration is greater than the second predetermined duration.

[0044] The restart timing module 50 does not trigger timing when the inclination angle of the compressor 20 is greater than the second predetermined angle.

[0045] For example, when the engine compartment of a commercial truck is being overhauled, the vehicle head is inclined forward, and the vehicle refrigerator 1 in the cab is also inclined, and the angle detection module 30 detects that the inclination angle of the compressor 20 is greater than the first predetermined angle, and the shutdown timing module 40 starts timing. When the shutdown timing module 40 has timed for a duration greater than the first predetermined duration, the controller 10 controls the compressor 20 to stop, and the compressor 20 enters the shutdown protection state.

[0046] When the engine compartment is overhauled, the vehicle head is reset, the vehicle refrigerator 1 in the cab returns to the normal angle, and the angle detection module 30 detects that the inclination angle of the compressor 20 is less than the second predetermined angle, and the restart timing module 50 starts timing. When the restart timing module 50 has timed for a duration greater than the second predetermined duration, the controller 10 controls the compressor 20 to resume operation.

[0047] When the vehicle is instantaneously tilted due to road bumps, sudden braking, sharp turns, or the like, the vehicle-mounted refrigerator 1 is instantaneously tilted, the angle detection module 30 detects that the tilt angle of the compressor 20 is greater than the first predetermined angle, the shutdown timing module 40 starts timing, and when the timing value of the shutdown timing module 40 does not reach the first predetermined time length, since the vehicle is only instantaneously tilted, the vehicle-mounted refrigerator 1 is timely righted, the angle detection module 30 detects that the tilt angle of the compressor 20 is less than the first predetermined angle, the shutdown timing module 40 does not trigger timing, and the compressor 20 remains in the running state.

[0048] The compressor tilt protection device according to the embodiment of the present application can detect the tilt angle of the compressor 20 by the angle detection module 30, determine whether the compressor 20 is in a tilted state by the detection value of the angle detection module 30, control the compressor 20 to shut down and restart by the tilt angle of the compressor 20, avoid the continuous running of the compressor 20 in a tilted state from causing damage to the compressor 20, and automatically restore the running of the compressor 20 after the compressor 20 is righted, thereby avoiding affecting the refrigeration effect of the vehicle-mounted refrigerator 1.

[0049] Further, the shutdown timing module 40 does not trigger timing when the tilt angle of the compressor 20 is less than the first predetermined angle, and the controller 10 controls the compressor 20 to shut down when the shutdown timing module 40 triggers timing and the timing length is greater than the first predetermined time length, so that the compressor 20 is shut down after being determined by both the angle and the time length, compared with the vehicle-mounted refrigerator in the related art that immediately shuts down the compressor when the compressor is tilted, the compressor 20 can avoid being immediately shut down when being tilted due to road bumps, sudden braking, sharp turns, or the like, the shutdown protection function can be avoided from being triggered by mistake, the compressor 20 can avoid being shut down too frequently, the refrigeration effect of the vehicle-mounted refrigerator 1 can be avoided from being affected, and the service life of the compressor 20 can be avoided from being affected by the compressor 20 being started and stopped too frequently.

[0050] In addition, the restart timing module 50 does not trigger timing when the tilt angle of the compressor 20 is greater than the second predetermined angle, and the controller 10 controls the compressor 20 to resume running when the restart timing module 50 triggers timing and the timing length is greater than the second predetermined time length, so that the compressor 20 resumes running after being determined by both the angle and the time length, which can facilitate ensuring that the compressor 20 is in a stable state and avoiding damage to the compressor 20 caused by the compressor 20 being restarted too quickly when the vehicle-mounted refrigerator 1 has not recovered to the stable state.

[0051] Therefore, the compressor tilt protection device according to the embodiment of the present application can determine the angle based on the tilt working condition and control the compressor to start and stop in combination with the tilt time to protect the compressor, thereby prolonging the service life of the compressor.

[0052] A compressor tilt protection device according to embodiments of the present application is described below with reference to the accompanying drawings.

[0053] In some embodiments of the present application, as shown in Figures 1-4 A compressor tilt protection device according to embodiments of the present application comprises an angle detection module 30, a shutdown timing module 40, a restart timing module 50 and a controller 10.

[0054] In particular, as shown in Figure 4 The angle detection module 30 is integrated with the controller 10, and the angle detection module 30 is adapted to be installed on the same or parallel installation reference surface as the compressor 20. This can improve the integration of the angle detection module 30, and can avoid an angle difference between the angle detection module 30 and the compressor 20, and improve the accuracy of the angle detection module 30.

[0055] In some embodiments, the angle detection module 30 comprises an accelerometer, which is a three-axis accelerometer, and the three-axis accelerometer is adapted to measure the acceleration components of the compressor 20 in X, Y and Z directions simultaneously, and the controller 10 is adapted to analyze the components of the gravity in X, Y and Z directions to calculate the tilt angle of the compressor 20. In this way, the tilt angle of the compressor 20 can be detected by acceleration.

[0056] In some embodiments, the angle detection module 30 comprises a gyroscope, which is a three-axis gyroscope, and the three-axis gyroscope is adapted to measure the angular velocity of the compressor 20 in X, Y and Z directions simultaneously, and the controller 10 is adapted to integrate and convert to obtain the tilt angle of the compressor 20. In this way, the tilt angle of the compressor 20 can be detected by angular velocity.

[0057] In some embodiments, the angle detection module 30 comprises an accelerometer and a gyroscope; The accelerometer is a three-axis accelerometer, and the three-axis accelerometer is adapted to measure the acceleration components of the compressor 20 in X, Y and Z directions simultaneously, and the controller 10 is adapted to analyze the components of the gravity in X, Y and Z directions to calculate the tilt angle of the compressor 20; The gyroscope is a three-axis gyroscope, and the three-axis gyroscope is adapted to measure the angular velocity of the compressor 20 in X, Y and Z directions simultaneously, and the controller 10 is adapted to integrate and convert to obtain the tilt angle of the compressor 20; The triaxial accelerometer and the triaxial gyroscope are combined to form a six-axis sensor system, the angle detection module 30 combines the data of the triaxial accelerometer and the triaxial gyroscope based on a six-axis fusion algorithm, and calculates the tilt angle of the compressor 20 through a complementary filtering or Kalman filtering algorithm. In this way, the tilt angle of the compressor 20 can be detected through acceleration and angular velocity, the shortcomings of a single type of sensor are made up, a more accurate tilt angle of the compressor 20 is obtained through a data fusion algorithm, and the accuracy of the angle detection of the compressor 20 is further improved.

[0058] A vehicle-mounted refrigerator 1 according to an embodiment of the present application is described below. The vehicle-mounted refrigerator 1 according to an embodiment of the present application comprises the compressor tilt protection device according to the above-described embodiments of the present application.

[0059] The vehicle-mounted refrigerator 1 according to an embodiment of the present application, by utilizing the compressor tilt protection device according to the above-described embodiments of the present application, can determine the angle based on the tilt working condition and control the start and stop of the compressor in combination with the tilt time to protect the compressor, thereby prolonging the service life of the compressor.

[0060] A vehicle according to an embodiment of the present application is described below. The vehicle according to an embodiment of the present application comprises the compressor tilt protection device according to the above-described embodiments of the present application or the vehicle-mounted refrigerator 1 according to the above-described embodiments of the present application.

[0061] The vehicle-mounted refrigerator 1 according to an embodiment of the present application, by utilizing the compressor tilt protection device according to the above-described embodiments of the present application or the vehicle-mounted refrigerator 1 according to the above-described embodiments of the present application, can determine the angle based on the tilt working condition and control the start and stop of the compressor in combination with the tilt time to protect the compressor, thereby prolonging the service life of the compressor.

[0062] A control method of the compressor tilt protection device according to an embodiment of the present application is described below with reference to Figure 2 and Figure 3 A control method of the compressor tilt protection device according to an embodiment of the present application adopts the compressor tilt protection device according to the above-described embodiments of the present application and comprises the following steps: S1, the angle detection module 30 is initialized; S2, the angle detection module 30 detects the tilt angle of the compressor 20; S3, the shutdown timing module 40 triggers timing when the tilt angle of the compressor 20 is greater than a first predetermined angle; S31, the controller 10 controls the compressor 20 to stop when the shutdown timing module 40 triggers timing and the timing duration is greater than a first predetermined duration, and the compressor 20 enters a shutdown protection state; S4, the shutdown timing module 40 does not trigger timing when the tilt angle of the compressor 20 is less than the first predetermined angle; S5, the restart timing module 50 triggers timing when the inclination angle of the compressor 20 is less than the second predetermined angle; S51, the controller 10 controls the compressor 20 to resume operation when the restart timing module 50 triggers timing and the timing duration is greater than the second predetermined duration; S6, the restart timing module 50 does not trigger timing when the inclination angle of the compressor 20 is greater than the second predetermined angle.

[0063] According to the control method of the compressor inclination protection device, by using the compressor inclination protection device according to the above-mentioned embodiments of the application, the compressor start-stop can be controlled based on the inclination condition determination angle and combined with the inclination time to protect the compressor, thereby prolonging the service life of the compressor.

[0064] Specifically, the angle detection module 30 includes a six-axis sensor system formed by a three-axis accelerometer and a three-axis gyroscope, and step S1 includes: S11, the angle detection module 30 performs sensor initialization IMU calibration; S12, read the six-axis sensor data of the angle detection module 30.

[0065] Specifically, the angle detection module 30 performs IMU calibration to eliminate zero offset when the power supply of the vehicle-mounted refrigerator 1 is restarted. In order to avoid errors caused by the vehicle being parked at an inclination, an upper limit of the zero offset is set, and the last valid value is used in the case of zero offset exceeding In this way, the influence of uninitialization detection data on the detection result can be avoided, and the detection accuracy of the angle detection module 30 can be improved.

[0066] More specifically, step S2 includes: S21, the six-axis sensor data of the angle detection module 30 is fused; S22, the data of the three-axis accelerometer and the three-axis gyroscope are combined based on a six-axis fusion algorithm, and the inclination angle of the compressor 20 is calculated by a complementary filtering or Kalman filtering algorithm.

[0067] In this way, the data of the three-axis gyroscope and the three-axis accelerometer of the angle detection module 30 can be fused to obtain more accurate angle detection values, and the accuracy of angle detection can be further improved.

[0068] Advantageously, step S31 further includes: After the compressor 20 enters the shutdown protection state, the controller records the fault state of the compressor 20 as "inclination protection trigger".

[0069] In this way, the controller 10 and other control devices can determine the state of the compressor 20.

[0070] More advantageously, the step S51 further comprises: After the compressor 20 resumes operation, the fault state of the compressor 20 is cleared.

[0071] In this way, the fault state of the compressor 20 after the compressor 20 resumes operation can be avoided to affect the subsequent operation of the vehicle refrigerator 1.

[0072] Optionally, the first predetermined angle is 30 degrees, and the first predetermined time length is 3 seconds. In this way, the maximum allowed inclination angle of the compressor 20 and the required time length for preventing false touch can be more reasonably set, so that the compressor 20 stops at a more reasonable angle and time, and damage caused by too frequent stop of the compressor 20 or failure to stop in time is avoided.

[0073] Further, the second predetermined angle is 15 degrees, and the second predetermined time length is 5 minutes. In this way, the safe inclination angle allowed by the compressor 20 and the determination time length for resuming the safe inclination angle can be more reasonably set, so that the compressor 20 resumes operation at a more reasonable angle and time, and damage caused by failure of the compressor 20 to restart in time to affect the refrigeration effect or too fast restart is avoided.

[0074] Those skilled in the art can understand that the calculation method of the inclination angle according to the embodiments of the present application described above includes but is not limited to the six-axis fusion algorithm, and more accurate acquisition methods can also be used or combined, such as further increasing the types or number of sensors, or combining artificial intelligence, big data, etc.

[0075] Those skilled in the art can understand that the above embodiments are described taking a truck as an example, and other types of vehicles, such as performance off-road vehicles, etc., are also applicable in the working conditions of forced long-time inclination of the vehicle body in climbing, extreme sports, etc., according to the compressor inclination protection device, the vehicle refrigerator, the vehicle and the control method according to the embodiments of the present application.

[0076] Other configurations and operations of the compressor inclination protection device, the vehicle refrigerator, the vehicle and the control method according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0077] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and application of the present application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A compressor tilt protection device, characterized in that, The compressor tilt protection device includes: An angle detection module (30) is adapted to detect the tilt angle of the compressor (20); A shutdown timing module (40) is adapted to trigger timing when the tilt angle of the compressor (20) is greater than a first predetermined angle; the shutdown timing module (40) is adapted not to trigger timing when the tilt angle of the compressor (20) is less than the first predetermined angle, wherein the first predetermined angle is the maximum allowable tilt angle of the compressor (20); The restart timing module (50) is adapted to trigger timing when the tilt angle of the compressor (20) is less than a second predetermined angle; the restart timing module (50) is adapted not to trigger timing when the tilt angle of the compressor (20) is greater than the second predetermined angle, wherein the second predetermined angle is the safe tilt angle allowed by the compressor (20); The controller (10) is adapted to control the compressor (20) to stop when the shutdown timing module (40) triggers timing and the timing duration is greater than a first predetermined duration, and the compressor (20) enters a shutdown protection state; the controller (10) is adapted to control the compressor (20) to resume operation when the restart timing module (50) triggers timing and the timing duration is greater than a second predetermined duration; the first predetermined duration is the shutdown accident determination duration, and the second predetermined duration is the compressor (20) restoration safe tilt angle determination duration.

2. The compressor tilt protection device according to claim 1, characterized in that, The angle detection module (30) is integrated with the controller (10), and the angle detection module (30) is adapted to be installed on the same or parallel mounting reference surface as the compressor (20).

3. The compressor tilt protection device according to claim 1, characterized in that, The angle detection module (30) includes an accelerometer, which is a triaxial accelerometer. The triaxial accelerometer is adapted to simultaneously measure the acceleration components of the compressor (20) in the X, Y, and Z directions and calculate the tilt angle of the compressor (20) by analyzing the components of gravity in the X, Y, and Z directions through the controller (10).

4. The compressor tilt protection device according to claim 1, characterized in that, The angle detection module (30) includes a gyroscope, which is a three-axis gyroscope. The three-axis gyroscope is suitable for simultaneously measuring the angular velocity of the compressor (20) in the X, Y, and Z directions and performing integration calculations through the controller (10) to obtain the tilt angle of the compressor (20).

5. The compressor tilt protection device according to claim 1, characterized in that, The angle detection module (30) includes: An accelerometer, the accelerometer being a triaxial accelerometer, the triaxial accelerometer being adapted to simultaneously measure the acceleration components of the compressor (20) in the X, Y, and Z directions and to calculate the tilt angle of the compressor (20) by analyzing the components of gravity in the X, Y, and Z directions through the controller (10); The gyroscope is a three-axis gyroscope, which is suitable for simultaneously measuring the angular velocity of the compressor (20) in the X, Y and Z directions and performing integration calculation through the controller (10) to obtain the tilt angle of the compressor (20); The triaxial accelerometer and the triaxial gyroscope are combined to form a six-axis sensor system. The angle detection module (30) combines the data from the triaxial accelerometer and the triaxial gyroscope based on the six-axis fusion algorithm and calculates the tilt angle of the compressor (20) through complementary filtering or Kalman filtering algorithms.

6. A vehicle-mounted refrigerator, characterized in that, Includes a compressor tilt protection device according to any one of claims 1-5.

7. A vehicle, characterized in that, Includes the compressor tilt protection device according to any one of claims 1-5 or the vehicle refrigerator according to claim 6.

8. A control method for a compressor tilt protection device, characterized in that, The compressor tilt protection device according to any one of claims 1-5 includes the following steps: S1. The angle detection module (30) is initialized; S2, The angle detection module (30) detects the tilt angle of the compressor (20); S3. The shutdown timing module (40) triggers timing when the tilt angle of the compressor (20) is greater than the first predetermined angle; S31. When the shutdown timing module (40) triggers timing and the timing duration is greater than the first predetermined duration, the controller (10) controls the compressor (20) to stop, and the compressor (20) enters the shutdown protection state. S4. The shutdown timing module (40) does not trigger timing when the tilt angle of the compressor (20) is less than the first predetermined angle; S5. The restart timing module (50) triggers timing when the tilt angle of the compressor (20) is less than the second predetermined angle; S51. When the restart timing module (50) triggers timing and the timing duration is greater than the second predetermined duration, the controller (10) controls the compressor (20) to resume operation; S6. The restart timing module (50) does not trigger timing when the tilt angle of the compressor (20) is greater than the second predetermined angle.

9. The control method for the compressor tilt protection device according to claim 8, characterized in that, The angle detection module (30) includes a six-axis sensor system formed by a three-axis accelerometer and a three-axis gyroscope, and step S1 includes: S11, The angle detection module (30) performs sensor initialization IMU calibration; S12. Read the six-axis sensor data of the angle detection module (30).

10. The control method for the compressor tilt protection device according to claim 9, characterized in that, Step S2 includes: S21, The six-axis sensor data fusion of the angle detection module (30); S22. Based on the six-axis fusion algorithm, the data of the three-axis accelerometer and the three-axis gyroscope are combined, and the tilt angle of the compressor (20) is calculated by complementary filtering or Kalman filtering algorithm.

11. The control method for the compressor tilt protection device according to claim 10, characterized in that, Step S31 further includes: After the compressor (20) enters the shutdown protection state, the controller records the fault status of the compressor (20) as "tilt protection triggered".

12. The control method for the compressor tilt protection device according to claim 11, characterized in that, Step S51 further includes: After the compressor (20) is restored to operation, the fault condition of the compressor (20) is cleared.

13. The control method for the compressor tilt protection device according to claim 8, characterized in that, The first predetermined angle is 30 degrees, and the first predetermined duration is 3 seconds.

14. The control method for the compressor tilt protection device according to claim 8, characterized in that, The second predetermined angle is 15 degrees, and the second predetermined duration is 5 minutes.

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