Novel wheel hub motor heat radiation controller
A hub motor and controller technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of motor disconnection, impact on driving safety, and failure to consider braking energy storage, etc., so as to improve cruising range and reduce energy consumption Effect
Inactive Publication Date: 2018-04-10
CHANGCHUN UNIV OF TECH
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Problems solved by technology
The power, transmission and braking devices are integrated into the hub. Although the mechanical structure of the car is greatly simplified, the heat and heat dissipation of the hub motor is an important factor for the wide application of the hub motor.
At present, the heat dissipation of hub motors mainly includes the spray heat dissipation structure (public number 206180778U), which does not consider the problem of braking energy utilization. This heat dissipation method requires a large amount of electric energy to drive and consumes a large amount of energy. For pure For electric vehicles, the optimization of energy consumption has always been a key issue. This heat dissipation method has a great restriction on the cruising range of electric vehicles. On the other hand, this heat dissipation method is spray heat dissipation. It is very easy to cause the motor to break the circuit, seriously affecting the safety of driving
There is also a heat dissipation method for hub motors that uses braking energy recovery to store cooling gas and timely dissipate heat to the hub motor (public number 204161085U). This device considers the problem of braking energy recovery, but it is contrary to the braking energy recovery system , did not consider storing the braking energy in the battery through the inverter, and using all the braking energy to recover and store cooling gas, the utilization rate of braking energy is very low
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[0009] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0010] A schematic diagram of the structure of a new hub motor heat dissipation controller, such as figure 1 shown. Mainly include SOC estimator, brake pedal sensor, temperature sensor, controller chip, water pump drive circuit, water pump, water tank, pipeline, wheel, hub motor, axle, battery, relay A, relay B, relay C, IGBT bridge, The controller chip judges whether to use the braking energy for the hub motor to dissipate heat by collecting the output status of each sensor.
[0011] figure 1 The initial state of each relay is that relay A is normally closed, relay B is normally open, and relay C is normally open.
[0012] The specific logic control block diagram is as follows: figure 2 As shown, the specific logic is to first judge whether the temperature of the hub motor is higher than the set value of 70°C, if it is higher than the set value, the relay C is c...
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The invention designs a novel wheel hub motor heat radiation controller by combining a braking energy recovery system, which full utilizes braking energy to solve the problem of motor heat radiation.The novel wheel hub motor heat radiation controller comprises a signal acquisition circuit, a controller chip and a water pump drive circuit. Based on the braking status monitored by the signal acquisition circuit in real time, battery SOC estimation value and hub motor temperature status, the controller chip controls the water pump drive circuit to drive the pump to continuously circulate the coolant, therefore, achieving the hub motor cooling function, reducing the hub motor temperature, reducing motor losses, increasing the life of the motor and vehicle battery and improving brake energy utilization.
Description
technical field [0001] The invention belongs to the field of automobile electronic control. Background technique [0002] At present, with the country's vigorous promotion of new energy vehicles, electric vehicles have gradually entered our lives. Among them, in-wheel motors are gradually applied to electric vehicles due to their simple structure and high power density, and become an important part of electric vehicles. The power, transmission and braking devices are integrated into the hub. Although the mechanical structure of the car is greatly simplified, the heat and heat dissipation of the hub motor is an important factor for the wide application of the hub motor. At present, the heat dissipation of hub motors mainly includes the spray heat dissipation structure (public number 206180778U), which does not consider the problem of braking energy utilization. This heat dissipation method requires a large amount of electric energy to drive and consumes a large amount of ener...
Claims
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Login to View More IPC IPC(8): B60K11/02H02K9/19
CPCB60K11/02H02K9/19
Inventor 崔高健任晓光李绍松
Owner CHANGCHUN UNIV OF TECH