CN214959073U - Motor suspension device of electric automobile - Google Patents
Motor suspension device of electric automobile Download PDFInfo
- Publication number
- CN214959073U CN214959073U CN202121182285.7U CN202121182285U CN214959073U CN 214959073 U CN214959073 U CN 214959073U CN 202121182285 U CN202121182285 U CN 202121182285U CN 214959073 U CN214959073 U CN 214959073U
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- Prior art keywords
- storage chamber
- liquid storage
- motor
- induction coil
- valve core
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- 239000000725 suspension Substances 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 230000006698 induction Effects 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 239000011550 stock solution Substances 0.000 claims abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000013016 damping Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
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Landscapes
- Vehicle Body Suspensions (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The invention discloses a motor suspension device of an electric automobile, which comprises a base, wherein a liquid storage chamber is arranged at the top of the base, the liquid storage chamber is provided with an elastic outer wall, a solenoid valve is arranged at the middle position of the liquid storage chamber, a valve core of the solenoid valve divides the liquid storage chamber into an upper cavity and a lower cavity, and liquid in the liquid storage chamber circulates between the upper cavity and the lower cavity through the valve core; the top of stock solution room is connected with the bracing piece that is used for supporting the motor, its characterized in that: magnetorheological fluid is stored in the liquid storage chamber, an induction coil is sleeved on a valve core of the electromagnetic valve, and the induction coil is connected to the current controller through a power line. The invention improves the original oil damper, adopts magnetorheological fluid to replace hydraulic oil, increases the induction coil, realizes the effect of adjustable damping by adjusting the current on the induction coil, not only ensures the original size to be unchanged, but also can better improve the influence generated by the vibration of the motor.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a motor suspension device of an electric automobile.
Background
At present, a pure electric vehicle adopts a motor to drive the vehicle to move forward, MCU and OBC products are usually locked on a motor shell in the whole vehicle arrangement process, so that the whole motor can vibrate in the normal running process, and the vibration generally has the characteristics of low amplitude, wide frequency range and the like. In order to avoid the influence of the vibration on the assembly strength of front cabin parts and the passenger cabin, an oil damper is often used for absorbing the vibration in the vehicle type development process. However, the currently used oil damper cannot absorb vibration in a wide frequency range in time, and an ideal vibration damping effect cannot be achieved, so that vibration caused by a motor can be transmitted to a vehicle body and a passenger cabin, and the assembly strength of front cabin parts and the comfort of passengers can be directly influenced.
Disclosure of Invention
The invention aims to provide a motor suspension device of an electric automobile, which can quickly realize damping adjustment aiming at vibration in different frequency ranges so as to achieve an ideal vibration reduction effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a motor suspension device of an electric vehicle comprises a base, wherein a liquid storage chamber is arranged at the top of the base and provided with an elastic outer wall, a solenoid valve is arranged in the middle of the liquid storage chamber, a valve core of the solenoid valve divides the liquid storage chamber into an upper cavity and a lower cavity, and liquid in the liquid storage chamber circulates between the upper cavity and the lower cavity through the valve core; the top of liquid storage chamber is connected with the bracing piece that is used for supporting the motor, the inside storage of liquid storage chamber has magnetorheological suspensions, the cover is equipped with induction coil on the solenoid valve case, and induction coil passes through the power cord and is connected to current controller.
Further, the outer wall of the liquid storage chamber is formed by rubber materials.
Furthermore, the base is internally provided with a nitrogen cavity, the top of the nitrogen cavity is provided with a rubber layer, and the rubber layer is in contact with the liquid storage chamber.
The invention adopts the technical scheme, improves the original oil damper, adopts magnetorheological fluid to replace hydraulic oil, increases the induction coil, realizes the effect of adjustable damping by adjusting the current on the induction coil, and can not only ensure the original size to be unchanged, but also better improve the influence generated by the vibration of the motor.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, the motor suspension device for the electric vehicle comprises a base 1, wherein a liquid storage chamber 2 is arranged at the top of the base 1, the liquid storage chamber 2 has an elastic outer wall, a solenoid valve 4 is arranged in the middle of the liquid storage chamber 2, a valve core of the solenoid valve 4 divides the liquid storage chamber 2 into an upper cavity and a lower cavity, and liquid in the liquid storage chamber 2 circulates between the upper cavity and the lower cavity through the valve core; the top of liquid storage chamber 2 is connected with the bracing piece 3 that is used for supporting the motor, the inside storage of liquid storage chamber 2 has magnetorheological suspensions, the cover is equipped with induction coil 5 on the 4 case of solenoid valve, and induction coil 5 is connected to the current controller through the power cord.
The outer wall of the liquid storage chamber 2 is formed by rubber materials.
The base 1 is internally provided with a nitrogen cavity, the top of the nitrogen cavity is provided with a rubber layer, and the rubber layer is in contact with the liquid storage chamber 2. The whole nitrogen cavity is of a sealing structure, the top of the nitrogen cavity is made of rubber, the nitrogen cavity is completely used for balancing the influence caused by pressure imbalance when liquid flows up and down, and in addition, nitrogen is inert gas and cannot generate other negative effects.
The invention uses the magnetorheological fluid to replace hydraulic oil. The working principle is as follows: the magnetorheological fluid presents a Newtonian fluid state under normal conditions, the characteristics of the oil outlet damper are presented at the moment, when current is introduced (not more than 0.2A), the induction coil 5 on the valve core of the electromagnetic valve 4 can generate closed magnetic induction lines, and at the moment, magnetorheological fluid particles are regularly arranged according to the direction of the magnetic induction lines to form solidification; the solidified magnetorheological fluid can be quickly transformed into a Newtonian fluid state after the current disappears. Aiming at the vibration of different frequencies and amplitudes generated by the motor, the damping can be adjusted by controlling the size of the introduced current, so that the effect of adjustable damping is achieved.
An induction coil 5 is added on a valve core of the electromagnetic valve 4, the induction coil 5 generates a magnetic field after current is introduced, and the flowing direction of liquid is ensured to be vertical to the direction of a magnetic induction line as much as possible in the design of the induction coil 5 so as to achieve an ideal effect.
The specific control method of the magnetorheological damper comprises the following steps: a three-axis acceleration sensor is arranged at the vibration end of the motor and used for detecting the frequency and amplitude of vibration generated by the whole motor; the acquired data is judged and analyzed through a mathematical model (VCU end) of the magneto-rheological damper, an input current instruction is issued to enable the magneto-rheological damper to generate certain damping, the effect after the damping is generated is fed back to form closed-loop control logic, the generated damping effect is quickly compensated through a PID control strategy, and the current instruction is issued again, so that an ideal vibration absorption effect is achieved, and the aim that the vibration of a motor cannot be transmitted to a vehicle body structure is achieved as far as possible.
While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (3)
1. A suspension device for an electric vehicle motor comprises a base, wherein a liquid storage chamber is arranged at the top of the base and provided with an elastic outer wall, a solenoid valve is arranged in the middle of the liquid storage chamber, a valve core of the solenoid valve divides the liquid storage chamber into an upper cavity and a lower cavity, and liquid in the liquid storage chamber circulates between the upper cavity and the lower cavity through the valve core; the top of stock solution room is connected with the bracing piece that is used for supporting the motor, its characterized in that: magnetorheological fluid is stored in the liquid storage chamber, an induction coil is sleeved on a valve core of the electromagnetic valve, and the induction coil is connected to the current controller through a power line.
2. The motor suspension device of the electric vehicle as claimed in claim 1, wherein: the outer wall of the liquid storage chamber is formed by rubber materials.
3. The motor suspension device of the electric vehicle as claimed in claim 1, wherein: the base is internally provided with a nitrogen cavity, the top of the nitrogen cavity is provided with a rubber layer, and the rubber layer is in contact with the liquid storage chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182285.7U CN214959073U (en) | 2021-05-28 | 2021-05-28 | Motor suspension device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182285.7U CN214959073U (en) | 2021-05-28 | 2021-05-28 | Motor suspension device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214959073U true CN214959073U (en) | 2021-11-30 |
Family
ID=79056133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182285.7U Active CN214959073U (en) | 2021-05-28 | 2021-05-28 | Motor suspension device of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214959073U (en) |
-
2021
- 2021-05-28 CN CN202121182285.7U patent/CN214959073U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 66 Southeast Avenue, Qingkou Town, Minhou County, Fuzhou City, Fujian Province, 350119 Patentee after: Southeast (Fujian) Automobile Industry Co.,Ltd. Country or region after: China Address before: 350000 Qingkou Town, Minhou County, Fuzhou City, Fujian Province Patentee before: SOUTH EAST (FUJIAN) MOTOR Corp.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |