Simple offline detection system and production system of hybrid electric drive assembly

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a simple off-line detection system and a production system of a hybrid electric drive assembly. The utility model provides a simple off-line detection system for a hybrid electric drive assembly. The simple off-line detection system comprises a hybrid electric drive assembly to be detected and an upper computer, the hybrid electric drive assembly to be tested comprises a first motor, a second motor, a first gear train, a second gear train, a clutch and a controller. The first motor is in transmission connection with the first gear train, the second motor is in transmission connection with the second gear train, and the clutch is arranged between the first gear train and the second gear train; the upper computer controls the clutch through the controller, so that the first gear train is in transmission connection with the second gear train, the first motor is controlled to operate in a rotating speed mode, the second motor is controlled to operate in a torque mode, and abnormal sound evaluation items and electric appliance function offline detection items can be performed on the operation states of the first gear train and the second gear train. Investment of an off-line detection device, personnel cost and debugging time are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a simple off-line detection system and a production system for a hybrid electric drive assembly. Background Art

[0002] The last step in the production of hybrid electric drive assemblies is off-line inspection, which is used to control the quality of the hybrid electric drive assemblies.

[0003] In the prior art, off-line testing of hybrid electric drive assemblies is performed on a dynamometer bench. The hybrid electric drive assembly needs to be installed on the dynamometer bench first, and the dynamometer absorbs power to perform abnormal noise evaluation and electrical function testing on the operating status of the hybrid electric drive assembly.

[0004] However, whether using professional or simple testing devices, it is necessary to design and manufacture non-standard installation support tooling and power input splines, which have a long design and manufacturing cycle and high investment costs. In addition, the test device generally requires a fixed location or the mobile flexibility of the test device is poor. At the same time, when the hybrid electric drive assembly to be tested needs to be jointly debugged mechanically and electrically with the test device, electronic control personnel, equipment operators, and installation technicians are required to participate at the same time, resulting in high personnel costs and long testing time. Utility Model Content

[0005] The purpose of the utility model is to provide a simple offline detection system and production system for a hybrid electric drive assembly, so as to solve the technical problems in the prior art that no matter whether a professional or simple detection device is used, non-standard installation support tooling and power input splines need to be designed and manufactured, the design and manufacturing cycle is long and the investment cost is high, and the test device generally requires a fixed place or the movement flexibility of the detection device is poor. At the same time, when the hybrid electric drive assembly to be tested needs to be jointly debugged mechanically and electrically with the test device, it is necessary for electric control personnel, equipment operators, and installation technicians to participate at the same time, resulting in high personnel costs and long testing time.

[0006] The utility model provides a simple offline detection system for a hybrid electric drive assembly, comprising: a hybrid electric drive assembly to be tested and a host computer;

[0007] The hybrid electric drive assembly to be tested includes a first motor, a second motor, a first gear train, a second gear train, a clutch and a controller;

[0008] The first motor is transmission-connected to the first gear train, the second motor is transmission-connected to the second gear train, the clutch is disposed between the first gear train and the second gear train, and the clutch is used to switch on and off the transmission connection between the first gear train and the second gear train;

[0009] The first motor, the second motor and the clutch are all electrically connected to the controller;

[0010] The host computer is communicatively connected to the controller, and the host computer is used to control the first motor to operate in a speed mode and the second motor to operate in a torque mode through the controller, so that the first motor forms a power transmission path through the first gear train, the clutch, the second gear train and the second motor in sequence.

[0011] As a further technical solution, it also includes a transfer rack, on which a positioning tool is provided;

[0012] The hybrid electric drive assembly to be tested is arranged on the transfer rack, and the positioning tool is positioned on the transfer rack through the positioning tool.

[0013] As a further technical solution, it also includes a high-voltage wiring harness and a high-voltage power supply;

[0014] One end of the high-voltage wire harness is connected to the high-voltage power supply, and the other end is connected to the controller.

[0015] As a further technical solution, it also includes a low-voltage wiring harness and a low-voltage power supply;

[0016] The controller is connected to the low-voltage power supply via the low-voltage wiring harness;

[0017] The host computer is connected to the low-voltage power supply through the low-voltage wiring harness.

[0018] As a further technical solution, the host computer and the controller are connected via a CAN bus communication.

[0019] As a further technical solution, the first motor is configured as a generator, and the second motor is configured as a motor.

[0020] As a further technical solution, the first gear train includes a first gear and a second gear meshing with each other, the first gear is arranged on the output shaft of the first motor, and the diameter of the first gear is smaller than the diameter of the second gear;

[0021] The clutch is disposed between the second gear and the second gear train, and the clutch is used to connect and disconnect the transmission connection between the second gear and the second gear train.

[0022] As a further technical solution, the clutch is arranged on the intermediate shaft;

[0023] The second gear train includes a gear set, a third gear disposed on the intermediate shaft, and a fourth gear disposed on the output shaft of the second motor, and the third gear is transmission-connected to the fourth gear through the gear set;

[0024] The clutch is used to connect and disconnect the transmission connection between the second gear and the third gear.

[0025] As a further technical solution, the gear set includes a fifth gear, a sixth gear and a seventh gear, and the sixth gear is coaxially arranged with the seventh gear;

[0026] The fifth gear is meshed and connected with the third gear, the sixth gear is meshed and connected with the fifth gear, and the seventh gear is meshed and connected with the fourth gear;

[0027] A diameter of the sixth gear is smaller than a diameter of the seventh gear.

[0028] The utility model provides a production system for producing a hybrid electric drive assembly, comprising a simple off-line detection system for the hybrid electric drive assembly.

[0029] Compared with the prior art, the simple offline detection system and production system of a hybrid electric drive assembly provided by the utility model has the following technical advantages:

[0030] The utility model provides a simple offline detection system for a hybrid electric drive assembly, comprising: a hybrid electric drive assembly to be tested and a host computer; the hybrid electric drive assembly to be tested comprises a first motor, a second motor, a first gear train, a second gear train, a clutch and a controller; the first motor is transmission-connected to the first gear train, the second motor is transmission-connected to the second gear train, the clutch is arranged between the first gear train and the second gear train, and the clutch is used to switch the transmission connection between the first gear train and the second gear train; the first motor, the second motor and the clutch are all electrically connected to the controller; the host computer is communication-connected to the controller, and the host computer is used to control the first motor to operate in a speed mode and the second motor to operate in a torque mode through the controller, so that the first motor forms a power transmission path through the first gear train, the clutch, the second gear train and the second motor in sequence.

[0031] The host computer controls the clutch through the controller, so that the first gear train is connected to the second gear train in transmission, and the controller controls the first motor to run in speed mode and the second motor to run in torque mode. At this time, the first motor simulates the dynamometer to absorb power, and inputs a speed command to the first motor and a torque command to the second motor. In this way, the first gear train and the second gear train on the power transmission path will run under load, and the operation status of the first gear train and the second gear train and the entire hybrid electric drive assembly to be tested can be evaluated for abnormal noise and offline detection of electrical functions. The controller and the host computer can simulate the control system of the test device to send control commands to the hybrid electric drive assembly to be tested, so as to achieve low-load operation and offline operation conditions. Without testing the hybrid electric drive assembly to be tested on the dynamometer bench, the investment in offline detection devices can be greatly reduced, while saving the design, manufacturing costs and cycle of tooling, and only the electric control personnel need to debug the hybrid electric drive assembly to be tested or the installation technicians can cooperate with a small amount, reducing personnel costs and debugging time.

[0032] The production system provided by the utility model includes the simple offline detection system for the hybrid electric drive assembly mentioned above. Therefore, the technical advantages and effects achieved by it include the technical advantages and effects achieved by the simple offline detection system for the hybrid electric drive assembly mentioned above, which will not be elaborated in detail here.

[0033] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of a hybrid electric drive assembly provided in an embodiment of the utility model.

[0036] Icon: 1-first motor; 2-second motor; 3-first gear train; 4-second gear train; 5-clutch; 6-controller; 7-first gear; 8-second gear; 9-intermediate shaft; 10-gear set; 11-third gear; 12-fourth gear; 13-fifth gear; 14-sixth gear; 15-seventh gear; 16-power transmission path. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0042] Specific structure such as Figure 1 shown.

[0043] The present embodiment provides a simple offline detection system for a hybrid electric drive assembly, comprising: a hybrid electric drive assembly to be tested and a host computer; the hybrid electric drive assembly to be tested comprises a first motor 1, a second motor 2, a first gear train 3, a second gear train 4, a clutch 5 and a controller 6; the first motor 1 is transmission-connected to the first gear train 3, the second motor 2 is transmission-connected to the second gear train 4, the clutch 5 is arranged between the first gear train 3 and the second gear train 4, and the clutch 5 is used to switch the transmission connection between the first gear train 3 and the second gear train 4; the first motor 1, the second motor 2 and the clutch 5 are all electrically connected to the controller 6; the host computer is communication-connected to the controller 6, and the host computer is used to control the first motor 1 to operate in a speed mode and the second motor 2 to operate in a torque mode through the controller 6, so that the first motor 1 forms a power transmission path 16 through the first gear train 3, the clutch 5, the second gear train 4 and the second motor 2 in sequence.

[0044] In this embodiment, the host computer controls the clutch 5 through the controller 6, so that the first gear train 3 is connected to the second gear train 4 in transmission, and the first motor 1 is controlled to run in the speed mode and the second motor 2 is controlled to run in the torque mode through the controller 6. At this time, the first motor 1 simulates the dynamometer to absorb power, and inputs the speed command to the first motor 1 and the torque command to the second motor 2. In this way, the first gear train 3 and the second gear train 4 on the power transmission path 16 will run under load, and the operation state of the first gear train 3 and the second gear train 4 and the entire hybrid electric drive assembly to be tested can be evaluated for abnormal noise and the electrical function offline detection project. The controller 6 and the host computer can simulate the control system of the test device to send a control command to the hybrid electric drive assembly to be tested, so as to achieve low-load operation and offline operation conditions. Without testing the hybrid electric drive assembly to be tested on the dynamometer bench, the investment in the offline detection device can be greatly reduced, and the design and manufacturing costs and cycles of the tooling can be saved. In addition, only the electric control personnel need to debug the hybrid electric drive assembly to be tested or the installation technicians need to cooperate in a small amount, which reduces the personnel cost and debugging time.

[0045] In this embodiment, the host computer can be a notebook computer, which is convenient to carry and use.

[0046] The optional technical solution of this embodiment also includes a transfer rack, on which a positioning tool is provided; the hybrid electric drive assembly to be tested is arranged on the transfer rack, and the positioning tool is positioned on the transfer rack through the positioning tool.

[0047] In this embodiment, the hybrid electric drive assembly to be tested needs to be transported through a transfer rack after it comes off the production line, and a simple off-line test can be performed directly on the transfer rack, which is convenient for testing. There is no need to transport the hybrid electric drive assembly to be tested separately to the dynamometer bench for testing, thus saving labor.

[0048] The optional technical solution of this embodiment also includes a high-voltage wire harness and a high-voltage power supply; one end of the high-voltage wire harness is connected to the high-voltage power supply, and the other end is connected to the controller 6.

[0049] The optional technical solution of this embodiment also includes a low-voltage wiring harness and a low-voltage power supply; the controller 6 is connected to the low-voltage power supply through the low-voltage wiring harness; and the host computer is connected to the low-voltage power supply through the low-voltage wiring harness.

[0050] In this embodiment, the controller 6 is connected to the high voltage power supply and the low voltage power supply through the high voltage wiring harness and the low voltage wiring harness respectively, and the host computer is connected to the low voltage power supply through the low voltage wiring harness, so as to facilitate the offline detection of the hybrid electric drive assembly to be tested.

[0051] In the optional technical solution of this embodiment, the host computer is connected to the controller 6 via a CAN bus. The communication is stable, and the hybrid electric drive assembly to be tested can complete the abnormal sound evaluation project of the running state and the offline detection project of the electrical function according to the control of the host computer through the CAN bus.

[0052] In the optional technical solution of this embodiment, the first motor 1 is configured as a generator, and the second motor 2 is configured as a motor. It should be noted that the first motor 1 can be configured as a generator or a motor, and the second motor 2 can also be configured as a generator or a motor, depending on the specific needs.

[0053] In the optional technical solution of this embodiment, the first gear train 3 includes a first gear 7 and a second gear 8 meshing with each other, the first gear 7 is arranged on the output shaft of the first motor 1, and the diameter of the first gear 7 is smaller than the diameter of the second gear 8; the clutch 5 is arranged between the second gear 8 and the second gear train 4, and the clutch 5 is used to switch the transmission connection between the second gear 8 and the second gear train 4. The structure is simple and the transmission is stable.

[0054] In the optional technical solution of this embodiment, the clutch 5 is arranged on the intermediate shaft 9; the second gear train 4 includes a gear set 10, a third gear 11 arranged on the intermediate shaft 9 and a fourth gear 12 arranged on the output shaft of the second motor 2, and the third gear 11 is transmission-connected with the fourth gear 12 through the gear set 10; the clutch 5 is used to switch the transmission connection between the second gear 8 and the third gear 11. The structure is simple and the transmission is stable.

[0055] In the optional technical solution of this embodiment, the gear set 10 includes a fifth gear 13, a sixth gear 14 and a seventh gear 15, and the sixth gear 14 and the seventh gear 15 are coaxially arranged; the fifth gear 13 is meshed and connected with the third gear 11, the sixth gear 14 is meshed and connected with the fifth gear 13, and the seventh gear 15 is meshed and connected with the fourth gear 12; the diameter of the sixth gear 14 is smaller than the diameter of the seventh gear 15. The structure is simple and the transmission is stable.

[0056] A production system provided in this embodiment includes the simple offline detection system for the hybrid electric drive assembly mentioned above. Therefore, the technical advantages and effects achieved by the production system include the technical advantages and effects achieved by the simple offline detection system for the hybrid electric drive assembly mentioned above, which will not be repeated here.

[0057] This embodiment provides a simple offline detection method for a hybrid electric drive assembly, comprising the following steps:

[0058] Step 1, install the hybrid electric drive assembly to be tested on the transfer bracket, add a preset dose of oil into the hybrid electric drive assembly to be tested, connect the controller 6 to the high-voltage power supply and the low-voltage power supply through the high-voltage wiring harness and the low-voltage wiring harness respectively, and connect the host computer to the low-voltage power supply through the low-voltage wiring harness;

[0059] Step 2, the control software installed in the host computer communicates with the controller 6 through the protocol file, and reads the communication data for errors and faults;

[0060] Step 3, the host computer controls the controller 6 to close the clutch 5 through the control software, and the first gear train 3 and the second gear train 4 are connected through the clutch 5;

[0061] Step 4: The host computer controls the controller 6 to operate the first motor 1 in a speed mode and input a speed command through the control software. The host computer controls the controller 6 to operate the second motor 2 in a torque mode and input a torque command through the control software, so that the first gear train 3 and the second gear train 4 on the power transmission path 16 operate under load.

[0062] Step 5, performing abnormal noise evaluation and electrical function offline detection on the operating status of the first gear train 3, the second gear train 4 and the overall operating status of the hybrid electric drive assembly to be tested.

[0063] In this embodiment, a dynamometer of the test device is not required, and a simple off-line test can be completed by utilizing the characteristics of the motor of the hybrid electric drive assembly to be tested.

[0064] Specific operation process:

[0065] Material preparation: hybrid electric drive assembly to be tested, transfer rack, laptop computer, high-voltage wiring harness, low-voltage wiring harness, oil, tools, high-voltage power supply, low-voltage power supply and communication protocol files.

[0066] Start testing:

[0067] Step 1, install the hybrid electric drive assembly to be tested on the transfer bracket, add a preset dose of oil into the hybrid electric drive assembly to be tested, connect the controller 6 to the high voltage power supply and the low voltage power supply through the high voltage wiring harness and the low voltage wiring harness respectively, and connect the laptop computer to the low voltage power supply through the low voltage wiring harness;

[0068] Step 2, the control software installed on the laptop communicates with the controller 6 through the communication protocol file, and reads the communication data for errors and faults;

[0069] Step 3, the laptop computer controls the controller 6 to close the clutch 5 through the control software, and the first gear train 3 and the second gear train 4 are connected through the clutch 5;

[0070] Step 4, the laptop computer controls the controller 6 to operate the first motor 1 in a speed mode through the control software. At this time, the first motor 1 simulates the dynamometer in the test device to absorb power and inputs a speed command of 3000 rpm. The laptop computer controls the controller 6 to operate the second motor 2 in a torque mode through the control software and inputs a torque command of 20 N.m, so that the first gear train 3 and the second gear train 4 on the power transmission path 16 operate under load;

[0071] Step 5, performing abnormal noise evaluation and electrical function offline detection on the operating status of the first gear train 3, the second gear train 4 and the overall operating status of the hybrid electric drive assembly to be tested.

[0072] The detection path of the simple offline detection method of the hybrid electric drive assembly provided in this embodiment is as follows: the power transmission path 16 makes all the gear sets 10 become a transmission chain through the closing of the clutch 5, and the controller 6 is controlled by the laptop computer to control the first motor 1 and the second motor 2, so as to complete the offline detection items such as abnormal noise of the gears on the power transmission path 16 and electrical function;

[0073] In this embodiment, the controller 6 and the laptop computer can simulate the control system of the test device to send control commands to the hybrid electric drive assembly to be tested, so as to achieve low-load operation and meet the off-line operation conditions; by closing the clutch 5, the first gear system 3 and the second gear system 4 can be subjected to low-load loading test at any time, and the hybrid electric drive assembly to be tested can be subjected to functional detection and fault verification; if the hybrid electric drive assembly to be tested is in the sample stage, the investment in the off-line detection device can be greatly reduced; using this method, the design, manufacturing cost and cycle of the tooling can be saved, and only the electronic control personnel need to debug the product or the installation technician needs to cooperate with a small amount, thereby reducing the personnel cost and debugging time.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A simple offline detection system for a hybrid electric drive assembly, characterized in that: include: The hybrid electric drive assembly and host computer to be tested; The hybrid electric drive assembly to be tested comprises a first motor (1), a second motor (2), a first gear train (3), a second gear train (4), a clutch (5) and a controller (6); The first motor (1) is transmission-connected to the first gear train (3), the second motor (2) is transmission-connected to the second gear train (4), the clutch (5) is arranged between the first gear train (3) and the second gear train (4), and the clutch (5) is used to connect and disconnect the transmission connection between the first gear train (3) and the second gear train (4); The first motor (1), the second motor (2), and the clutch (5) are all electrically connected to the controller (6); The host computer is communicatively connected to the controller (6), and the host computer is used to control the first motor (1) to operate in a speed mode and the second motor (2) to operate in a torque mode through the controller (6), so that the first motor (1) forms a power transmission path (16) through the first gear train (3), the clutch (5), the second gear train (4) and the second motor (2) in sequence.

2. The simple offline detection system for hybrid electric drive assembly according to claim 1 is characterized in that: It also includes a transfer frame, on which a positioning tool is provided; The hybrid electric drive assembly to be tested is arranged on the transfer rack, and the positioning tool is positioned on the transfer rack through the positioning tool.

3. The simple offline detection system for hybrid electric drive assembly according to claim 1 is characterized in that: Also included are high voltage wiring harnesses and high voltage power supplies; One end of the high-voltage wire harness is connected to the high-voltage power supply, and the other end is connected to the controller (6).

4. The simple offline detection system for hybrid electric drive assembly according to claim 1, characterized in that: Also included are a low voltage wiring harness and a low voltage power supply; The controller (6) is connected to the low-voltage power supply via the low-voltage wiring harness; The host computer is connected to the low-voltage power supply through the low-voltage wiring harness.

5. The simple offline detection system for hybrid electric drive assembly according to claim 1, characterized in that: The host computer is connected to the controller (6) via a CAN bus communication.

6. The simple offline detection system for hybrid electric drive assembly according to claim 1, characterized in that: The first motor (1) is configured as a generator, and the second motor (2) is configured as a motor.

7. The simple offline detection system for a hybrid electric drive assembly according to any one of claims 1 to 6, characterized in that: The first gear train (3) comprises a first gear (7) and a second gear (8) meshing with each other, the first gear (7) being arranged on an output shaft of the first motor (1), and the diameter of the first gear (7) being smaller than the diameter of the second gear (8); The clutch (5) is arranged between the second gear (8) and the second gear train (4), and the clutch (5) is used to connect and disconnect the transmission connection between the second gear (8) and the second gear train (4).

8. The simple offline detection system for hybrid electric drive assembly according to claim 7, characterized in that: The clutch (5) is arranged on an intermediate shaft (9); The second gear train (4) comprises a gear set (10), a third gear (11) arranged on the intermediate shaft (9), and a fourth gear (12) arranged on the output shaft of the second motor (2), and the third gear (11) is transmission-connected to the fourth gear (12) via the gear set (10); The clutch (5) is used to connect and disconnect the transmission connection between the second gear (8) and the third gear (11).

9. The simple offline detection system for hybrid electric drive assembly according to claim 8, characterized in that: The gear set (10) comprises a fifth gear (13), a sixth gear (14) and a seventh gear (15), and the sixth gear (14) and the seventh gear (15) are coaxially arranged; The fifth gear (13) is meshedly connected with the third gear (11), the sixth gear (14) is meshedly connected with the fifth gear (13), and the seventh gear (15) is meshedly connected with the fourth gear (12); The diameter of the sixth gear (14) is smaller than the diameter of the seventh gear (15).

10. A production system for producing a hybrid electric drive assembly, characterized in that: A simple off-line detection system for a hybrid electric drive assembly comprising the system described in any one of claims 1 to 9.

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