TWM454945U - Controller device for electric vehicle - Google Patents

Description

Electric vehicle controller device

The present invention relates to a power recovery control device, and more particularly to an electric vehicle controller device that can utilize electric vehicle deceleration energy conversion as charging.

Electric vehicles are environmentally friendly, driver-free and maintenance-free, and are used for short-haul transportation. However, the energy supplement of electric vehicles does not resemble the direct refueling of automobiles, which can continue the action. Electric vehicles need to wait for a long time to continue their operations, so how to avoid unnecessary loss of electricity is the primary goal of electric vehicles.

The speed control and deceleration of the electric vehicle travels by the user, and the kinetic energy of the electric vehicle is mostly slowed by the mechanical brake. However, simply consuming the friction to consume the kinetic energy of the electric vehicle during the travel is obviously contrary to the aforementioned avoidance of unnecessary loss. In particular, the current situation of emergency stoppages in metropolitan areas is very common, which also causes one of the main reasons for the energy consumption of electric vehicles. Therefore, some manufacturers have proposed to add generators in an attempt to recover the energy generated by deceleration by means of a generator. But the reverse leads to an increase in cost and load. Therefore, how to avoid the increase of the generator, the use of the existing electric motor to directly recover the decelerated energy, as the charging of the electric vehicle, is the solution to effectively improve the endurance of the electric vehicle.

In order to reduce the load, the electric car itself is very light, and the balance and control of the driving can only depend on the individual ability of the user. Therefore, it is very easy to cause on downhill sections. Dangerous, and the known electric vehicles can only rely on mechanical brakes, and the downhill sections are prone to excessive speed or rush, resulting in loss of control. Therefore, how to further improve the safety of the downhill section of the electric vehicle, there are also improvements.

In view of the above problems and deficiencies in the prior art, the main purpose of the present invention is to propose an electric vehicle controller device. By using the kinetic energy of the electric vehicle to decelerate, it is directly converted into electric energy for charging the electric vehicle, and by this conversion, the safety of the driving and the protector of the battery are improved.

According to the above object of the present invention, an electric vehicle controller device is provided, which comprises an energy storage unit, a rectification unit, a recharge switching unit, an energy storage protection unit, a deceleration detection unit, a control unit and a drive. The control module composed of the unit is electrically connected to an electric motor. The energy storage unit stores a power; the rectifying unit adjusts the power outputted by the energy storage unit or the electric motor; the recharging switching unit switches the electrical circuit direction between the energy storage unit and the electric motor; The protection unit limits the power output of the energy storage unit to meet a preset battery characteristic curve; the speed reduction detecting unit obtains a signal of the electric vehicle deceleration action; the driving unit receives a driving signal to drive the electric motor; the control The unit is connected to each of the above units and selectively outputs a predetermined signal. By the composition of each unit, the control unit can make the signal obtained by the speed reduction detecting unit to switch the direction of the electrical circuit to discharge or charge the energy storage unit.

10‧‧‧Control Module

11‧‧‧ Energy storage unit

12‧‧‧ Energy Storage Protection Unit

121‧‧‧Battery voltage detection

122‧‧‧current detection

123‧‧‧Overcurrent interruption detection

13‧‧‧Recharge switch unit

14‧‧‧Rectifier unit

15‧‧‧Deceleration detection unit

154‧‧‧ function button detection

151‧‧‧Speed voltage detection

152‧‧‧1:1 boost test

153‧‧‧ brake detection

16‧‧‧Drive unit

161‧‧‧ Hall signal detection

162‧‧‧ Pulse width modulation control

163‧‧‧Motor drive control

17‧‧‧Control unit

2‧‧‧Electric motor

Figure 1 is a block diagram of the composition of the electric vehicle controller.

Figure 2 Schematic diagram of the detection and driving of the electric vehicle controller device.

Figure 3 is a simplified diagram of the battery voltage detection circuit of the electric vehicle controller device.

Figure 4 is a simplified diagram of the current detection circuit of the electric vehicle controller device.

Fig. 5 is a schematic diagram of the recharging switching circuit of the electric vehicle controller device.

Figure 6 is a simplified diagram of the speed control voltage detection circuit of the electric vehicle controller device.

Figure 7 is a schematic diagram of the brake detection circuit of the electric vehicle controller device.

Figure 8 is a simplified diagram of the 1:1 power-assisted detection circuit of the electric vehicle controller unit.

Figure 9 is a simplified diagram of the Hall signal detection circuit of the electric vehicle controller device.

Figure 10 is a schematic diagram of the motor drive control circuit of the electric vehicle controller device.

The embodiment of the electric vehicle controller device of the present invention will be further described below. Please refer to the related drawings and descriptions. In order to facilitate the understanding of the present embodiment, the same components are denoted by the same symbols.

See figures 1 through 9. The electric vehicle controller device comprises: an energy storage unit 11, an energy storage protection unit 12, a recharge switching unit 13, a rectification unit 14, a detection unit 15, a driving unit 16, and a control unit The control module 10 is electrically connected to an electric motor 2, wherein the energy storage unit 11 is a battery that can store and output electric power, such as a lithium battery, a lithium iron battery or a lead acid battery.

The energy storage protection unit 12 is electrically connected to the energy storage unit 11 and the recharging switching unit 13, and includes a battery voltage detection, a current detection, and an overcurrent interruption detection. According to the storage and power output of the energy storage unit 11, at least one potential signal is output. The energy storage protection unit 12 further receives a power supply signal to limit the output of the energy storage unit 11 and the input electrical value, which is the voltage or current output or input by the energy storage unit 11. The battery voltage detection can be achieved by a battery voltage detection circuit (as shown in FIG. 3), and the current detection and overcurrent interruption detection can be achieved by a current detection circuit (as shown in FIG. 4).

The recharging switching unit 13 is electrically connected to the energy storage protection unit 12 and the rectifying unit 14 respectively, and receives a power switching signal 切换 to switch the electrical circuit direction between the energy storage unit 11 and the electric motor 2 . The recharge switching can be achieved by a recharge switching circuit (as shown in Figure 5).

The rectifying unit 14 is electrically connected to the recharging switching unit 13 and the electric motor 2, respectively, and receives a rectified signal to boost the electric power of the electrical connection.

The speed reduction detecting unit 15 includes at least a speed regulation voltage detection 151, a 1:1 power assist detection 152, a brake detection 153, and a function key detection 154. According to the speed regulation voltage detection 151, the 1:1 power detection 152, the brake detection 153 and the function button detection 154, the operation of the electric vehicle deceleration is obtained, and a deceleration signal is selectively output. The speed regulation voltage detection 151, the brake detection 153 and the 1:1 power detection 152 are respectively achieved by a speed regulation voltage detection circuit, a brake detection circuit and a 1:1 power detection circuit (see Figures 6, 7, and 8). Figure).

The driving unit 16 receives a driving signal, and detects the rotation speed of the electric motor 2 by a Hall signal detection 161, and cooperates with the pulse width modulation control 162 and the motor driving control 163 to drive the electric motor 2. The Hall signal detection 161 can be achieved by a Hall signal detection circuit (as shown in FIG. 9). And the motor drive control 163 can be achieved by the six-step drive of the motor drive control circuit (as shown in FIG. 10).

The control unit 17 is electrically connected to the electric motor 2, the energy storage protection unit 12, the recharging switching unit 13, the rectifying unit 14, the deceleration detecting unit 15, and the driving unit 16, and receives a deceleration signal and a potential signal, and Selectively output a power supply signal, a power switching signal, a rectified signal and a driving signal according to the received deceleration signal or potential signal.

With the combination of the above units, when the electric vehicle (not shown) is in normal running, the electric power in the electric circuit is electrically conducted from the energy storage unit 11 toward the electric motor 2, and the energy storage protection unit 12 and the recharging switching unit are 13. After the rectifying unit 14 supplies the electric motor 2, the electric motor 2 is actuated. The control unit 17 outputs a power supply signal according to the battery characteristic curve corresponding to the corresponding energy storage unit 11 , so that the energy storage protection unit 12 limits the voltage or current value output by the energy storage unit 11 to ensure stable power release of the energy storage unit 11 . . According to the battery voltage detection 121, the current detection and the 122 overcurrent interruption detection 123 to ensure the discharge state of the energy storage unit 11, the energy storage unit 11 is prevented from being excessively discharged and damaged. The recharging switching unit 13 is controlled by the control unit 17 to output a power switching signal such that its electrical circuit can be normally turned on toward the rectifying unit 14. Finally, the rectifying unit 14 receives the rectified signal outputted by the control unit 17, boosts the power supplied by the energy storage unit 11 to match the electric power that drives the electric motor 2, and provides the driving unit 16 to drive the electric motor 2 according to the driving signal thereof. Let the electric car travel.

When the electric vehicle encounters a deceleration condition such as downhill, deceleration control, or braking, the deceleration detecting unit 15 selectively outputs a deceleration signal to the control unit 17 according to the speed regulation voltage detection 151, the 1:1 assist detection 152, and the brake detection 153. . The control unit 17 outputs a power switching signal to the recharging switching unit 13, and causes the recharging switching unit 13 to switch the electrical circuit, so that the electrical circuit that is originally turned on by the energy storage unit 11 toward the electric motor 2 is reversely switched to the electric motor 2 direction. The energy storage unit 11 is turned on in the direction.

At this time, the electric motor 2 loses the power supply of the energy storage unit 11, that is, the driving power is no longer generated and the speed of the electric vehicle is slowed down, but in the process before the electric vehicle is stationary, the electric vehicle still retains kinetic energy, so The electric motor 2 is driven to operate, and one of the operations generates a counter electromotive force. The control unit 17 outputs a rectified signal to the rectifying unit 14 and the rectifying unit 14 receives the rectifying signal to step up and down the electric power of the counter electromotive force to meet the electric power required for charging the energy storage unit 11, and then recharges the switching unit 13 and stores The energy storage unit 11 can be charged after the unit 12 can be protected.

In summary, using the deceleration kinetic energy of the electric vehicle, the electric motor 2 is driven to achieve the purpose of braking back to the charging force, and the electric vehicle deceleration action is obtained by the speed regulation voltage detection, the 1:1 power detection, and the brake detection, and will be affected. The energy recovery of the electric motor 2 is converted and the energy storage unit 11 is charged, thereby increasing the storage capacity of the energy storage unit 11 and prolonging the mobility of the electric vehicle. In addition to mechanical braking, the electric vehicle can also increase the braking effect by pulling the electromagnetic resistance generated by the electric motor when generating electric power. It is more helpful for the electric vehicle to use the electromagnetic resistance to control the speed of travel when driving downhill, and to increase the safety of the downhill driving.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. Changes that are well known to those skilled in the art, and still fall within the scope of this creation.

10‧‧‧Control Module

121‧‧‧Battery voltage detection

122‧‧‧current detection

123‧‧‧Overcurrent interruption detection

151‧‧‧Speed voltage detection

152‧‧‧1:1 boost test

153‧‧‧ brake detection

154‧‧‧ function button detection

161‧‧‧ Hall signal detection

162‧‧‧ Pulse width modulation control

163‧‧‧Motor drive control

Claims (6)

An electric vehicle controller device includes: an electric motor; an energy storage unit for storing and outputting a power; a rectifying unit receiving a rectification signal to adjust the electric power, and the rectifying unit is electrically connected to the electric motor; a recharging switching unit is electrically connected to the rectifying unit and receives a power switching signal to switch the direction of the electrical circuit between the energy storage unit and the electric motor; an energy storage protection unit and the energy storage unit And the recharging switching unit is electrically connected, and receives a power supply signal to limit the output and input electrical value of the energy storage unit; a deceleration detecting unit and at least one deceleration signal; and a driving unit that receives a driving signal to drive The electric motor; and a control unit electrically connected to the electric motor, the rectifying unit, the recharging switching unit, the energy storage protection unit and the deceleration detecting unit, and receiving the deceleration signal and the potential signal, and According to the deceleration signal received and the potential signal, selectively outputting a power supply signal, a rectification signal, a power switching signal, and a drive Signal. The electric vehicle controller device according to claim 1, wherein the energy storage unit is a lithium battery. The electric vehicle controller device according to claim 1, wherein the energy storage unit is a lithium iron battery. The electric vehicle controller device according to claim 1, wherein the energy storage unit is a lead-acid battery. The electric vehicle controller device according to claim 1, wherein the electrical value is a voltage value. The electric vehicle controller device according to claim 1, wherein the electrical value is a current value.