Cooling mechanism of hub motor
A technology of cooling mechanism and wheel hub motor, which is applied in the direction of motors, cooling/ventilation devices, electromechanical devices, etc. It can solve the problems of high temperature and cannot operate normally, and achieve the effect of good heat conduction and dissipation, high thermal conductivity and low viscosity.
Inactive Publication Date: 2018-06-01
NINGBO SHENGLONG AUTOMOTIVE POWERTRAIN SYSTEM CO LTD +1
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a hub motor cooling mechanism, which can quickly disperse the heat generated during the operation of the hub motor, and overcome the overheating of the hub motor due to the overload operation of the hub motor due to increased power and torque. Disadvantages of operation to ensure the safety of electric vehicles during driving
Method used
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Embodiment Construction
[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] Such as Figure 1~5 As shown, the present invention provides a hub motor cooling mechanism, including a motor body 1, the motor body 1 includes an inner end cover 2 and an outer end cover 3, and also includes a rotor yoke 4, the rotor yoke 4, the inner end cover A motor cavity 5 is formed between the end cover 2 and the outer end cover 3. The motor cavity 5 is filled with a liquid heat-conducting medium, which requires high thermal conductivity, insulation, high ignition and flash point, and low viscosity. No corrosion on plastic, rubber, enameled wire paint layers, such as press oil.
[0023] In this embodiment, an oil injection hole 41 is provided on the rotor yoke 4 for injecting a liquid heat-conducting medium into the motor cavity 5, and a sealing plug 11 is provided at the opening of the oil injection hole 41, since it is inevitab...
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The invention discloses a cooling mechanism of a hub motor. The cooling mechanism comprises a motor main body, the motor main body comprises an inner end cover and an outer end cover, the cooling mechanism also comprises a rotor yoke, the rotor yoke, the inner end cover and the outer end cover form a motor cavity, liquid heat-conducting medium is contained in the motor cavity, inner sidewalls of one sides of the inner end cover and the outer end cover, close to the motor cavity, are both provided with mixing blades used for mixing the liquid heat-conducting medium and reducing the thermal resistance, and the mixing blades are uniformly distributed along the circumference directions of the inner end cover and the outer end cover. According to the cooling mechanism of the hub motor, the heatgenerated during the operation of the hub motor can be rapidly dispersed, the defect of failure of normal operation caused by over-high temperature due to overload work including increased power andtorque of the hub motor is overcome, and the security of an electric vehicle in a driving process is ensured.
Description
technical field [0001] The invention relates to the technical field of new energy vehicle hubs, in particular to a hub motor cooling mechanism. Background technique [0002] The electric vehicle hub motor is a device that integrates the electric motor, transmission system and braking system in the hub of the vehicle. Compared with the centralized drive, the use of wheel hub motors in electric vehicles has the following advantages: a large number of transmission components are omitted, making the vehicle structure simpler; the driving force of each electric wheel is directly and independently controllable, making its dynamic control more flexible and convenient. Reasonably control the driving force of each electric wheel to improve the driving performance under bad road conditions; it is easy to realize electric braking, electromechanical composite braking and braking energy feedback of each electric wheel to save energy. Judging from the current development trend and the ch...
Claims
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IPC IPC(8): H02K9/00H02K5/04H02K11/25H02K11/20H02K5/18
CPCH02K5/04H02K5/18H02K9/00H02K11/20H02K11/25Y02T10/64
Inventor 成波景云勇朱江王月宏罗玉龙周培良李相儒徐鑫
Owner NINGBO SHENGLONG AUTOMOTIVE POWERTRAIN SYSTEM CO LTD