CN214473803U - Testing device for electric drive assembly - Google Patents
Testing device for electric drive assembly Download PDFInfo
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- CN214473803U CN214473803U CN202023188583.5U CN202023188583U CN214473803U CN 214473803 U CN214473803 U CN 214473803U CN 202023188583 U CN202023188583 U CN 202023188583U CN 214473803 U CN214473803 U CN 214473803U
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Abstract
The utility model discloses a testing arrangement for electric drive assembly, subtract the derailleur including two-way DC power supply, environment case, temperature control system, connecting axle and special, the special derailleur and the setting of electric drive assembly are at the environment incasement that subtracts, two-way DC power supply sets up outside the environment case for the power supply of electric drive assembly, temperature control system sets up outside the environment case, is used for controlling electric drive assembly and special temperature control who subtracts the derailleur, the connecting axle is used for subtracting electric drive assembly and special being connected or two special being subtracted being connected between the derailleur. When the two special speed reducing and changing devices are arranged oppositely, the transmission ratio of the first shaft to the middle shaft and the transmission ratio of the third shaft to the middle shaft are both 1:1, and the two electric drive assemblies are arranged between the two first shafts and between the two third shafts respectively, back-to-back dragging durability test of the two electric drive assemblies can be realized, and the test scheme has lower cost, better adaptability and test convenience compared with the existing double-power testing machine.
Description
Technical Field
The utility model relates to a road vehicle and equip technical field, concretely relates to a testing arrangement for electric drive assembly.
Background
New energy automobiles are the inevitable trend of automobile development, and power electromotion is the main characteristic of new energy automobiles. Electric drive assemblies (including at least drive motors, speed reduction and transmission devices and controllers) are increasingly applied to new energy automobile power systems. Since the electric drive assembly typically has two outputs, it needs to be tested using a dual dynamometer. In the endurance test, because one set of double power testing machine rack can only test one set of electric drive assembly, the test cost is high and the test efficiency is low; in the differential performance test, the test is carried out by adjusting the rotating speed difference of two dynamometers of the double dynamometer rack, and because the dynamometer has deviation and rotating speed fluctuation in the actual rotating speed control, a stable and accurate differential condition is difficult to provide for the electric drive assembly of the tested object.
SUMMERY OF THE UTILITY MODEL
The utility model discloses plan to provide a testing arrangement for electric drive assembly, can connect the output of two sets of electric drive assemblies to realize back to back durable test, reduce test cost and improve efficiency of software testing.
Therefore, the utility model discloses the technical scheme who adopts does: a testing device for an electric drive assembly comprises a bidirectional direct-current power supply, an environment box, a water temperature control system, a connecting shaft and a special speed reducing transmission, wherein the special speed reducing transmission comprises a first shaft, an intermediate shaft and a third shaft which are sequentially arranged from back to front, gears are arranged on the first shaft, the intermediate shaft and the third shaft, the gears are mutually meshed, connecting interfaces are arranged on the left side and the right side of the intermediate shaft, and the first shaft and the third shaft are respectively provided with one connecting interface on the same side;
the special speed reducing and changing device and the electric drive assembly are arranged in the environment box, the bidirectional direct current power supply is arranged outside the environment box and used for supplying power to the electric drive assembly, the water temperature control system is arranged outside the environment box and used for controlling the water temperature control of the electric drive assembly and the special speed reducing and changing device, and the connecting shaft is used for connecting the electric drive assembly and the special speed reducing and changing device or connecting the two special speed reducing and changing devices;
when the two special speed reducing and changing devices are arranged oppositely, the transmission ratios of the first shaft to the middle shaft and the transmission ratios of the third shaft to the middle shaft are 1:1, and the two electric driving assemblies are arranged between the two first shafts and between the two third shafts respectively, the back-to-back opposite-dragging durability test of the two electric driving assemblies can be realized.
Preferably, the electric drive device further comprises a single dynamometer, when the two special reduction transmissions are arranged oppositely, the transmission ratios of the first shaft to the intermediate shaft and the third shaft to the intermediate shaft are all 1:1, the electric drive assembly is arranged between the two first shafts or between the two third shafts, the single dynamometer is connected with a connecting interface, opposite to the first shaft and the third shaft, on one intermediate shaft through a connecting shaft, and the two intermediate shafts are directly connected through the connecting shaft, the summation of output torques on two sides of the electric drive assembly can be realized.
Further preferably, when the transmission ratio of the first shaft to the intermediate shaft and the transmission ratio of the third shaft to the intermediate shaft are adjusted to be not 1:1, the active fixed-proportion differential of the electric drive assembly can be realized, and therefore the differential of the electric drive assembly can be tested.
Preferably, the front side and the rear side of the special speed reducer are both provided with cooling interfaces, the cooling interfaces on one side of the two special speed reducers are connected with a water temperature control system through water pipes, and the two cooling interfaces on the other side of the two special speed reducers are connected with each other through water pipes.
Preferably, both ends of the electric drive assembly directly pass through a water pipe and a water temperature control system.
Preferably, one end of each of the two electric drive assemblies is connected with the water temperature control system through a water pipe, and the other ends of the two electric drive assemblies are directly connected with each other through a water pipe.
Preferably, the two ends of the connecting shaft are provided with connecting flanges, and the middle of the connecting shaft is provided with a universal joint.
The utility model has the advantages that: the two identical special speed reducing devices are symmetrically arranged in the left and right of the environment box, and can be used as a single dynamometer for testing and can also be used as a double dynamometer for testing through different conversion connection modes, back-to-back dragging durability tests of two electric drive assemblies can also be realized, a brand new multifunctional selection configuration mode is provided for testing the electric drive assemblies, and the test device has lower cost, better adaptability and test convenience compared with the existing double dynamometer test scheme.
Drawings
Fig. 1 is a schematic structural diagram of the special transmission of the present invention.
Fig. 2 is a schematic structural view of the middle pair drag endurance test of the present invention.
Fig. 3 is a schematic structural diagram of the single dynamometer test of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
referring to fig. 1-3, a testing device for an electric drive assembly is mainly composed of a bidirectional direct current power supply 1, an environment tank 2, a water temperature control system 3, a connecting shaft 4 and a special speed reducer 5.
The special speed reducer 5 mainly comprises a first shaft 5a, an intermediate shaft 5b and a third shaft 5c which are sequentially arranged from back to front, gears are arranged on the first shaft 5a, the intermediate shaft 5b and the third shaft 5c and are meshed with each other, connecting interfaces a are arranged on the left side and the right side of the intermediate shaft 5b, and the first shaft 5a and the third shaft 5c are respectively provided with one connecting interface a on the same side.
The special speed reducing device 5 and the electric drive assembly 6 are arranged in the environment box 2, the bidirectional direct current power supply 1 is arranged outside the environment box 2 and used for supplying power to the electric drive assembly 6, the water temperature control system 3 is arranged outside the environment box 2 and used for controlling the water temperature control of the electric drive assembly 6 and the special speed reducing device 5, and the connecting shaft 4 is used for connecting the electric drive assembly 6 with the special speed reducing device 5 or connecting the two special speed reducing devices 5.
When the two special speed reducing and changing devices 5 are arranged oppositely, the transmission ratios of the first shaft 5a to the middle shaft 5b and the third shaft 5c to the middle shaft 5b are all 1:1, and the two electric driving assemblies 6 are respectively arranged between the two first shafts 5a and between the two third shafts 5c, the back-to-back opposite-dragging durability test of the two electric driving assemblies 6 can be realized.
The test device is characterized by further comprising a single dynamometer 7, when the two special speed reducing and changing devices 5 are oppositely arranged, the transmission ratios of the first shaft 5a to the intermediate shaft 5b and the transmission ratios of the third shaft 5c to the intermediate shaft 5b are all 1:1, the electric drive assembly 6 is arranged between the two first shafts 5a or between the two third shafts 5c, the single dynamometer 7 is connected with a connecting interface a, opposite to the first shaft 5a and the third shaft 5c, on one intermediate shaft 5b through a connecting shaft 4, and the two intermediate shafts 5b are directly connected through the connecting shaft 4, summation of output torques on two sides of the electric drive assembly 6 can be achieved, and therefore the function of testing the electric drive assembly 6 by using the single dynamometer 7 can be achieved.
When the transmission ratio of the first shaft 5a to the intermediate shaft 5b and the transmission ratio of the third shaft 5c to the intermediate shaft 5b are adjusted to be not 1:1, the active constant-proportion differential speed of the electric drive assembly 6 can be realized, and the differential mechanism of the electric drive assembly 6 can be tested. Compared with a double work measuring machine scheme (adjusting the rotating speed difference of two work measuring machines), the differential speed state is more stable, and the differential speed proportion is more accurate.
The front side and the rear side of the special speed reducing transmission 5 are respectively provided with a cooling interface b, the cooling interfaces b at one side of the two special speed reducing transmissions 5 are connected with the water temperature control system 3 through water pipes, and the two cooling interfaces b at the other side are connected with each other through water pipes. Two special speed reducers 5 are connected in series, so that the unified control of the water temperature control system 3 is facilitated.
Both ends of the electric drive assembly 6 directly pass through a water pipe and the water temperature control system 3.
One end of each of the two electric drive assemblies 6 is connected with the water temperature control system 3 through a water pipe, and the other end is directly connected with each other through a water pipe. Two electric drive assemblies 6 are connected in series, so that the unified control of the water temperature control system 3 is facilitated.
In order to facilitate the installation and the steering connection of the connecting shaft 4, connecting flanges are adopted at two ends of the connecting shaft 4, and a universal joint 4a is arranged in the middle.
Claims (7)
1. The utility model provides a testing arrangement for electric drive assembly, includes two-way DC power supply (1), environment case (2), water temperature control system (3) and connecting axle (4), its characterized in that: the special speed reducer (5) comprises a first shaft (5a), an intermediate shaft (5b) and a third shaft (5c) which are sequentially arranged from back to front, gears are arranged on the first shaft (5a), the intermediate shaft (5b) and the third shaft (5c) and are meshed with each other, connecting interfaces (a) are arranged on the left side and the right side of the intermediate shaft (5b), and the first shaft (5a) and the third shaft (5c) are respectively provided with one connecting interface (a) on the same side;
the special speed reducing and changing device (5) and the electric drive assembly (6) are arranged in the environment box (2), the bidirectional direct current power supply (1) is arranged outside the environment box (2) and used for supplying power to the electric drive assembly (6), the water temperature control system (3) is arranged outside the environment box (2) and used for controlling the water temperatures of the electric drive assembly (6) and the special speed reducing and changing device (5), and the connecting shaft (4) is used for connecting the electric drive assembly (6) with the special speed reducing and changing device (5) or connecting the two special speed reducing and changing devices (5);
when the two special speed reducing and changing devices (5) are arranged oppositely, the transmission ratios of the first shaft (5a) to the middle shaft (5b) and the third shaft (5c) to the middle shaft (5b) are all 1:1, and the two electric drive assemblies (6) are respectively arranged between the two first shafts (5a) and between the two third shafts (5c), back-to-back opposite-dragging durability tests of the two electric drive assemblies (6) can be realized.
2. A testing device for an electric drive assembly according to claim 1, wherein: the electric drive assembly comprises a transmission shaft (5a), a first shaft (5a), an intermediate shaft (5b), a third shaft (5c) and an intermediate shaft (5b), and is characterized by further comprising a single dynamometer (7), when the two special reduction transmissions (5) are arranged oppositely, the transmission ratios of the first shaft (5a) to the intermediate shaft (5b) and the third shaft (5c) to the intermediate shaft (5b) are 1:1, the electric drive assembly (6) is arranged between the two first shafts (5a) or between the two third shafts (5c), the single dynamometer (7) is connected with a connecting interface (a) on one intermediate shaft (5b) opposite to the first shaft (5a) and the third shaft (5c) through a connecting shaft (4), and when the two intermediate shafts (5b) are directly connected through the connecting shaft (4), summation of output torques on two sides of the electric drive assembly (6) can be achieved.
3. A testing device for an electric drive assembly according to claim 2, wherein: when the transmission ratio of the first shaft (5a) to the intermediate shaft (5b) and the transmission ratio of the third shaft (5c) to the intermediate shaft (5b) are adjusted to be not 1:1, the active fixed-proportion differential speed of the electric drive assembly (6) can be realized, and the differential of the electric drive assembly (6) can be tested.
4. A testing device for an electric drive assembly according to claim 1, wherein: the front side and the rear side of the special speed reducer (5) are respectively provided with a cooling interface (b), the cooling interface (b) on one side of the special speed reducer (5) is connected with the water temperature control system (3) through a water pipe, and the two cooling interfaces (b) on the other side are connected with each other through a water pipe.
5. A testing device for an electric drive assembly according to claim 1, wherein: and two ends of the electric drive assembly (6) directly pass through the water pipe and the water temperature control system (3).
6. A testing device for an electric drive assembly according to claim 2 or 3, wherein: one ends of the two electric drive assemblies (6) are connected with the water temperature control system (3) through water pipes, and the other ends of the two electric drive assemblies are directly connected with each other through water pipes.
7. A testing device for an electric drive assembly according to claim 1, 2 or 3, wherein: and two ends of the connecting shaft (4) adopt connecting flanges, and the middle of the connecting shaft is provided with a universal joint (4 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023188583.5U CN214473803U (en) | 2020-12-26 | 2020-12-26 | Testing device for electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023188583.5U CN214473803U (en) | 2020-12-26 | 2020-12-26 | Testing device for electric drive assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214473803U true CN214473803U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023188583.5U Active CN214473803U (en) | 2020-12-26 | 2020-12-26 | Testing device for electric drive assembly |
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| CN (1) | CN214473803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834838A (en) * | 2020-12-26 | 2021-05-25 | 中国汽车工程研究院股份有限公司 | Electric drive assembly testing arrangement |
-
2020
- 2020-12-26 CN CN202023188583.5U patent/CN214473803U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834838A (en) * | 2020-12-26 | 2021-05-25 | 中国汽车工程研究院股份有限公司 | Electric drive assembly testing arrangement |
| CN112834838B (en) * | 2020-12-26 | 2024-03-08 | 中国汽车工程研究院股份有限公司 | Electric drive assembly testing device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230731 Address after: 401133 Room 608, Floor 6, No. 39, Yonghe Road, Yuzui Town, Liangjiang New Area, Jiangbei District, Chongqing Patentee after: CAIC New Energy Technology Co.,Ltd. Patentee after: China Automotive Engineering Research Institute Co.,Ltd. Address before: No.9 Jinyu Avenue, new North District, Chongqing Patentee before: China Automotive Engineering Research Institute Co.,Ltd. |