阅读说明：本技术 用于电动汽车怀挡换挡器的换挡控制方法 (Gear shifting control method for electric automobile hand gear shifter ) 是由 王忠收 于 2019-11-11 设计创作，主要内容包括：本发明公开了一种用于电动汽车怀挡换挡器的换挡控制方法,包括以下步骤：步骤1：怀挡换挡控制器通过硬线连整车控制器,怀挡换挡控制器将挡杆动作转化为电压信号并输出到整车控制器；步骤2：整车控制器判断整车是否上电,若否则执行步骤3,若是则执行步骤4；步骤3：整车控制器不响应换挡动作并输出P挡,返回步骤1；步骤4：整车控制器判断换挡动作,结合整车状态信息判断整车所处挡位并输出当前挡位信号,实现挡位切换或挡位维持。本发明采用整车控制器通过怀挡换挡控制器的挡杆动作对应的电压信号,结合整车状态信息判断并输出整车当前挡位,避免了怀挡换挡控制器的挡位与整车控制器判断的挡位不一致而影响挡位控制和驾驶体验。(The invention discloses a gear shifting control method for an electric automobile hand-gear shifter, which comprises the following steps of: step 1: the hand-held gear shifting controller is connected with the whole vehicle controller through a hard wire, and converts the action of the gear lever into a voltage signal and outputs the voltage signal to the whole vehicle controller; step 2: the vehicle control unit judges whether the vehicle is powered on, if not, the step 3 is executed, and if so, the step 4 is executed; and step 3: the vehicle control unit does not respond to the gear shifting action and outputs a P gear, and the step 1 is returned; and 4, step 4: and the vehicle control unit judges the gear shifting action, judges the gear of the whole vehicle by combining the state information of the whole vehicle and outputs a current gear signal, so that gear shifting or gear maintaining is realized. According to the invention, the vehicle control unit judges and outputs the current gear of the whole vehicle by combining the state information of the whole vehicle through the voltage signal corresponding to the action of the gear lever of the hand-held gear shifting controller, so that the influence on gear control and driving experience caused by the fact that the gear of the hand-held gear shifting controller is inconsistent with the gear judged by the vehicle control unit is avoided.)

1. A gear shifting control method for an electric automobile hand-gear shifter is characterized by comprising the following steps: the method comprises the following steps:

step 1: the hand-held gear shifting controller (1) is directly connected with the whole vehicle controller (3) through a hard wire (2), and the hand-held gear shifting controller (1) converts the action of a driver on a gear lever (11) into a voltage signal and outputs the voltage signal to the whole vehicle controller (3) through the hard wire (2);

step 2: the vehicle controller (3) judges whether the power mode of the vehicle is in a power-on state, if not, the step 3 is executed, and if so, the step 4 is executed;

and step 3: the finished vehicle controller (3) does not respond to the gear shifting action of the hand gear shifting controller (1), outputs the current gear as the P gear, and returns to the step 1;

and 4, step 4: the vehicle control unit (3) judges the action of shifting gears of a driver through the voltage signals, judges the gears of the vehicle according to the state information of the vehicle and outputs current gear signals, so that gear switching or gear maintaining is realized.

2. The shift control method for the electric vehicle hand-gear shifter according to claim 1, characterized in that: in the step 1, the operation of the driver on the gear lever (11) of the hand-held shift controller (1) includes: the upper light dial, the lower light dial, the upper heavy dial, the lower heavy dial, the P gear press down and no action, wherein, no action means that the stop lever (11) does not rotate, the rotating angle range of the upper light dial relative to no action is anticlockwise (10 degrees and 20 degrees), the rotating angle range of the lower light dial relative to no action is clockwise (10 degrees and 20 degrees), the rotating angle range of the upper heavy dial relative to no action is anticlockwise (30 degrees and 40 degrees), and the rotating angle range of the lower heavy dial relative to no action is clockwise (30 degrees and 40 degrees).

3. The shift control method for the electric vehicle hand-gear shifter according to claim 2, characterized in that: the voltage signals respectively corresponding to the upper light dialing, the lower light dialing, the upper redialing, the lower redialing, the P gear pressing and the no action are as follows: an upper light dialing voltage signal, a lower light dialing voltage signal, an upper redial voltage signal, a lower redial voltage signal, a P-gear press-down voltage signal and a no-action voltage signal.

4. The shift control method for the electric vehicle hand-gear shifter according to claim 1, characterized in that: in the step 3, when the power mode of the whole vehicle is switched from the non-power-on state to the power-on state, the whole vehicle controller (3) defaults that the current gear is P gear and outputs the current gear as P gear.

5. The shift control method for the electric vehicle hand-gear shifter according to claim 1, characterized in that: in step 4, the gear shifting includes:

the D gear (101), the N gear (102) or the R gear (103) are switched to the P gear (104);

(II) the D gear (101) or the R gear (103) is switched to the N gear (102);

(III) the R gear (103) or the N gear (102) is switched to the D gear (101);

the N gear (102) or the D gear (101) is switched to the R gear (103);

and (V) the P gear (104) is switched to the N gear (102).

6. The shift control method for the electric vehicle hand-gear shifter according to claim 5, characterized in that: the gear conditions for switching the D gear (101), the N gear (102) or the R gear (103) to the P gear (104) are as follows: the absolute value of the vehicle speed is less than 3kph, and the vehicle control unit (3) acquires a P gear pressing voltage signal of the hand gear shifting controller (1) through the hard wire (2); when the gear condition is met, the vehicle control unit (3) outputs the current gear as the P gear.

7. The shift control method for the electric vehicle hand-gear shifter according to claim 5, characterized in that: the gear conditions for switching the D gear (101) or the R gear (103) to the N gear (102) are as follows:

(i) the whole vehicle controller (3) acquires a lower light dialing voltage signal of the hand-gear shifting controller (1) through the hard wire (2);

(ii) the whole vehicle controller (3) acquires a lower redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), and a brake pedal is not stepped;

when the gear condition (i) or (ii) is met, the vehicle control unit (3) outputs the current gear as N gear.

8. The shift control method for the electric vehicle hand-gear shifter according to claim 5, characterized in that: the gear conditions for switching the R gear (103) to the D gear (101) are as follows: the vehicle control unit (3) acquires a lower redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), a brake pedal is stepped on, the vehicle speed is greater than-3 kph, namely the vehicle speed along the reversing direction is less than 3kph, and the vehicle control unit (3) outputs that the current gear is the D gear;

the gear conditions for switching the N gear (102) to the D gear (101) are as follows:

(iii) the vehicle control unit (3) acquires a lower redial voltage signal of the hand-gear shifting controller (1) through a hard wire (2), and a brake pedal is stepped on, wherein the vehicle speed is greater than-3 kph, namely the vehicle speed along the reversing direction is less than 3 kph;

(iv) the vehicle control unit (3) acquires a lower redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), and the vehicle speed is greater than 3kph, namely the vehicle speed along the advancing direction of the vehicle is greater than 3 kph;

when the gear condition (iii) or (iv) is met, the vehicle control unit (3) outputs that the current gear is a D gear.

9. The shift control method for the electric vehicle hand-gear shifter according to claim 5, characterized in that: the gear conditions for switching the N gear (102) to the R gear (103) are as follows:

(v) the vehicle control unit (3) acquires an upper redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), and a brake pedal is stepped down, so that the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph;

(vi) the vehicle control unit (3) acquires an upper redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), and the vehicle speed is less than-3 kph, namely the vehicle speed along the reversing direction is greater than 3 kph;

when the gear condition (v) or (vi) is met, the vehicle control unit (3) outputs the current gear as the R gear;

the gear conditions for switching the D gear (101) to the R gear (103) are as follows: the whole vehicle controller (3) acquires a lower redial voltage signal of the hand-gear shifting controller (1) through the hard wire (2), and a brake pedal is stepped down, wherein the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph; when the gear condition is met, the vehicle control unit (3) outputs the current gear as the R gear.

10. The shift control method for the electric vehicle hand-gear shifter according to claim 5, characterized in that: the gear conditions for switching the P gear (104) to the N gear (102) are as follows: the vehicle control unit (3) acquires that the P gear pressing voltage signal of the hand gear shifting controller (1) is cancelled through the hard wire (2), the vehicle control unit (3) outputs that the current gear is the N gear, namely the P gear (104) is cancelled and then the gear is switched to the N gear (102), but the current gear cannot be directly switched to the D gear (101) or the R gear (103).

Technical Field

The invention relates to a control method of an electric automobile, in particular to a gear shifting control method for a hand-gear shifter of the electric automobile.

Background

Among the parts of the electric automobile, the gear shifter is a link for communicating a driver with the power system of the whole automobile. The vehicle control unit calculates the current gear by analyzing the signal of the gear shifter and combining the real-time state of the vehicle so as to analyze the driving direction intention of a driver, and the gear signal is also closely related to modules such as torque output and energy recovery.

Disclosure of Invention

The invention aims to provide a gear shifting control method for a hand-gear shifter of an electric automobile.

The invention is realized by the following steps:

a gear shifting control method for an electric automobile hand-gear shifter comprises the following steps:

step 1: the hand-held gear shifting controller is directly connected with the vehicle control unit through a hard wire, and converts the action of a driver on a gear lever into a voltage signal and outputs the voltage signal to the vehicle control unit through the hard wire;

step 2: the vehicle controller judges whether the power mode of the vehicle is in a power-on state, if not, the step 3 is executed, and if so, the step 4 is executed;

and step 3: the finished vehicle controller does not respond to the gear shifting action of the hand-gear shifting controller, outputs the current gear as the P gear and returns to the step 1;

and 4, step 4: the vehicle control unit judges the action of shifting gears of a driver through the voltage signal, judges the gear of the whole vehicle according to the state information of the whole vehicle and outputs a current gear signal, so that gear switching or gear maintaining is realized.

In step 1, the driver's operation of the shift lever of the hand-held shift controller includes: the upper light dial, the lower light dial, the upper heavy dial, the lower heavy dial, the P gear press down and no action, wherein, no action means that the stop lever does not rotate, the rotating angle range of the upper light dial relative to no action is anticlockwise (10 degrees and 20 degrees), the rotating angle range of the lower light dial relative to no action is clockwise (10 degrees and 20 degrees), the rotating angle range of the upper heavy dial relative to no action is anticlockwise (30 degrees and 40 degrees), and the rotating angle range of the lower heavy dial relative to no action is clockwise (30 degrees and 40 degrees).

The voltage signals respectively corresponding to the upper light dialing, the lower light dialing, the upper redialing, the lower redialing, the P gear pressing and the no action are as follows: an upper light dialing voltage signal, a lower light dialing voltage signal, an upper redial voltage signal, a lower redial voltage signal, a P-gear press-down voltage signal and a no-action voltage signal.

In step 3, when the vehicle power mode is switched from the non-power-on state to the power-on state, the vehicle controller defaults that the current gear is the gear P, and outputs the current gear as the gear P.

In step 4, the gear shifting includes:

d gear, N gear or R gear are switched to P gear;

(II) D gear or R gear is switched to N gear;

(III) R gear or N gear is switched to D gear;

fourthly, the N gear or the D gear is switched to the R gear;

and (V) switching the P gear to the N gear.

The gear conditions of switching the D gear, the N gear or the R gear to the P gear are as follows: the absolute value of the vehicle speed is less than 3kph, and the vehicle control unit acquires a P gear pressing voltage signal of the hand gear shifting controller through a hard line; when the gear condition is met, the vehicle control unit outputs that the current gear is P gear.

The gear conditions for switching the D gear or the R gear to the N gear are as follows:

(i) the whole vehicle controller acquires a lower light dialing voltage signal of the hand-gear shifting controller through a hard line;

(ii) the vehicle control unit acquires a lower redial voltage signal of the hand-gear shifting controller through a hard line, and a brake pedal is not stepped on;

and when the gear condition (i) or (ii) is met, the vehicle control unit outputs the current gear to be N gear.

The gear condition for switching the R gear to the D gear is as follows: the vehicle control unit acquires a lower-redialing voltage signal of the hand-gear shifting controller through a hard line, a brake pedal is stepped on, the vehicle speed is greater than-3 kph, namely the vehicle speed along the reversing direction is less than 3kph, and the vehicle control unit outputs the current gear as a D gear;

the gear condition for switching the N gear to the D gear is as follows:

(iii) the vehicle control unit acquires a lower redial voltage signal of the hand-gear shifting controller through a hard line, and a brake pedal is stepped down, wherein the vehicle speed is greater than-3 kph, namely the vehicle speed in the reversing direction is less than 3 kph;

(iv) the vehicle control unit acquires a lower redial voltage signal of the hand-gear shifting controller through a hard line, and the vehicle speed is greater than 3kph, namely the vehicle speed along the advancing direction of the vehicle is greater than 3 kph;

and (5) when the gear condition (iii) or (iv) is met, the vehicle control unit outputs the current gear to be the D gear.

The gear condition for switching the N gear to the R gear is as follows:

(v) the vehicle control unit acquires an upper redialing voltage signal of the hand-gear shifting controller through a hard line, and a brake pedal is stepped down, so that the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph;

(vi) the vehicle control unit acquires an upper redialing voltage signal of the hand-gear shifting controller through a hard line, and the vehicle speed is less than-3 kph, namely the vehicle speed along the reversing direction is more than 3 kph;

when the gear condition (v) or (vi) is met, the vehicle control unit outputs the current gear as the R gear;

the gear condition for switching the gear D to the gear R is as follows: the vehicle control unit acquires a lower redial voltage signal of the hand-gear shifting controller through a hard line, and a brake pedal is stepped down, so that the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph; when the gear condition is met, the vehicle control unit outputs that the current gear is an R gear.

The gear condition for switching the gear P to the gear N is as follows: the vehicle control unit acquires that the P gear of the hand gear shifting controller is pressed down to cancel a voltage signal through a hard wire, and the vehicle control unit outputs the current gear to be the N gear, namely the P gear is cancelled and then the current gear is switched to the N gear, but the current gear cannot be directly switched to the D gear or the R gear.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the voltage signal is output by the hand-held gear shifting controller, the hand-held gear shifting controller does not need to be provided with a single chip or a bus function, the cost of the hand-held gear shifting controller and the whole vehicle is reduced, and the hand-held gear shifting controller is convenient to install, produce and maintain.

2. According to the invention, the hand-held gear shifting controller is adopted to output a voltage signal corresponding to the action of the gear lever instead of a physical gear, and only the whole vehicle controller outputs a gear signal, so that the situation that the gear output by the hand-held gear shifting controller is inconsistent with the gear judged by the whole vehicle controller is avoided, and the driving safety is improved.

3. According to the invention, the vehicle control unit is adopted to analyze the gear shifting action of the driver corresponding to the voltage signal output by the hand-held gear shifting controller, and the vehicle control unit is combined with signals such as a vehicle power supply, a brake switch and a vehicle speed to judge whether the gear shifting action of the driver is established or not, and responds and outputs the current gear for modules such as torque analysis, energy recovery and instrument chassis, so that the driving experience is improved.

According to the invention, the current gear of the whole vehicle is judged and output by the whole vehicle controller through the voltage signal corresponding to the action of the gear lever of the hand-held gear shifting controller in combination with the state information of the whole vehicle, so that the influence on gear control and driving experience caused by the fact that the gear of the hand-held gear shifting controller is inconsistent with the gear judged by the whole vehicle controller is avoided, a single chip and a bus are not required to be arranged on the hand-held gear shifting controller, and the cost of the hand-held gear shifting controller is reduced.

Drawings

FIG. 1 is a flow chart of a shift control method for an electric vehicle hand-gear shifter in accordance with the present invention;

FIG. 2 is an electrical schematic of the shift control method of the present invention for an electric vehicle hand-gear shifter;

fig. 3 is a gear shifting schematic diagram of the gear shifting control method for the electric vehicle hand gear shifter according to the invention.

In the figure, a hand gear shift controller 1, a gear lever 11, a gear shift 101D, a gear shift 102N, a gear shift 103R, a gear shift 104P, a hard wire 2 and a vehicle control unit 3 are shown.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, a shift control method for a hand-gear shifter of an electric vehicle includes the following steps:

referring to fig. 2, step 1: the hand-held gear shifting controller 1 is directly connected with the whole vehicle controller 3 through the hard wire 2, the hand-held gear shifting controller 1 converts the action of a driver on the gear lever 11 into a voltage signal and outputs the voltage signal to the whole vehicle controller 3 through the hard wire 2, and the whole vehicle controller 3 provides 5V working voltage for the hand-held gear shifting controller 1.

The driver's action on the shift lever 11 of the hand-held shift controller 1 includes: the upper light dial, the lower light dial, the upper heavy dial, the lower heavy dial, the P gear press down and no action, wherein, no action means that the stop lever 11 does not rotate, namely the rotation angle is 0 degrees, the rotation angle range of the upper light dial relative to no action is anticlockwise (10 degrees and 20 degrees), the rotation angle range of the lower light dial relative to no action is clockwise (10 degrees and 20 degrees), the rotation angle range of the upper heavy dial relative to no action is anticlockwise (30 degrees and 40 degrees), and the rotation angle range of the lower heavy dial relative to no action is clockwise (30 degrees and 40 degrees).

The voltage signals corresponding to the upper light dialing, the lower light dialing, the upper redialing, the lower redialing, the P gear pressing and the no-action are as follows: an upper light dialing voltage signal, a lower light dialing voltage signal, an upper redial voltage signal, a lower redial voltage signal, a P-gear press-down voltage signal and a no-action voltage signal. The value range of the voltage signal can be calibrated according to design requirements during the whole vehicle development test, such as: the voltage range of the upper light dialing voltage signal is [3.5V, 3.8V ], the voltage range of the upper redialing voltage signal is [4V, 4.3V ], the voltage range of the lower light dialing voltage signal is [1.2V, 1.5V ], the voltage range of the lower redialing voltage signal is [0.7V, 1V ], the voltage range of the P gear pressing voltage signal is [1.7V, 2V ], and the voltage range of the non-action voltage signal is [2.5V, 2.8V ].

Step 2: and (3) judging whether the power mode of the whole vehicle is in a power-on state or not by the vehicle controller 3, if not, executing the step 3, and if so, executing the step 4.

And step 3: and the vehicle controller 3 does not respond to the gear shifting action of the hand-gear shifting controller 1 and outputs that the current gear is P gear, namely, the gear switching is not allowed, waits for the power supply of the vehicle to be electrified, and returns to the step 1.

When the power supply mode of the whole vehicle is changed from the non-power-on state to the power-on state, the whole vehicle controller 3 defaults that the current gear is the P gear, and outputs the current gear as the P gear.

And 4, step 4: the vehicle control unit 3 judges the shifting action of a driver through the voltage signal, and judges the gear of the vehicle and outputs a current gear signal by combining the vehicle state information such as a brake switch and the vehicle speed, so that gear switching or gear maintaining is realized. If the vehicle state information such as a brake switch, the vehicle speed and the like meets a gear switching signal, the vehicle controller 3 responds to the gear shifting action of a driver, so that the switching control of gears among the P gear 104, the D gear 101, the N gear 102 and the R gear 103 is realized; if the vehicle state information such as the brake switch, the vehicle speed and the like does not meet the gear shifting signal, the vehicle controller 3 does not respond to the gear shifting action of the driver and maintains the current gear.

Referring to fig. 3, the gear shifting includes:

the D gear 101, the N gear 102 or the R gear 103 are switched to the P gear 104.

And (II) the D gear 101 or the R gear 103 is switched to the N gear 102.

And thirdly, the R gear 103 or the N gear 102 is switched to the D gear 101.

The (fourth) N gear 102 or the D gear 101 is shifted to the R gear 103.

And (five) the P gear 104 is switched to the N gear 102.

The gear conditions for shifting the D gear 101, the N gear 102 or the R gear 103 to the P gear 104 are as follows: the absolute value of the vehicle speed is less than 3kph, and the vehicle control unit 3 acquires a P gear pressing voltage signal of the hand gear shifting controller 1 through the hard wire 2; when the gear condition is met, the vehicle controller 3 outputs the current gear as the P gear, and the electric vehicle is switched from the D gear 101, the N gear 102 or the R gear 103 to the P gear 104.

The gear conditions for switching the D gear 101 or the R gear 103 to the N gear 102 are as follows:

(i) the whole vehicle controller 3 acquires a lower light dialing voltage signal of the hand-gear shifting controller 1 through the hard wire 2;

(ii) the vehicle control unit 3 acquires a lower redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and a brake pedal is not stepped on;

when the gear condition (i) or (ii) is met, the vehicle controller 3 outputs the current gear to be the N gear, and the electric vehicle is switched from the D gear 101 or the R gear 103 to the N gear 102.

The gear conditions for switching the R gear 103 to the D gear 101 are as follows: the vehicle control unit 3 acquires a lower redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, the brake pedal is treaded down, the vehicle speed is greater than-3 kph, namely the vehicle speed along the reversing direction is less than 3kph, the vehicle control unit 3 outputs the current gear as the D gear, and the gear switching of the electric vehicle from the R gear 103 to the D gear 101 is realized.

The gear conditions for switching the N gear 102 to the D gear 101 are as follows:

(iii) the vehicle control unit 3 acquires a lower redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and a brake pedal is stepped on, wherein the vehicle speed is greater than-3 kph, namely the vehicle speed along the reversing direction is less than 3 kph;

(iv) the vehicle control unit 3 acquires a lower redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and the vehicle speed is greater than 3kph, namely the vehicle speed along the advancing direction of the vehicle is greater than 3 kph;

when the gear condition (iii) or (iv) is met, the vehicle controller 3 outputs the current gear as the D gear, and the electric vehicle is switched from the N gear 102 to the D gear 101.

The gear conditions for switching the N gear 102 to the R gear 103 are as follows:

(v) the vehicle control unit 3 acquires an upper redialing voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and the brake pedal is stepped down, so that the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph;

(vi) the vehicle control unit 3 acquires an upper redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and the vehicle speed is less than-3 kph, namely the vehicle speed along the reversing direction is greater than 3 kph;

when the gear condition (v) or (vi) is met, the vehicle controller 3 outputs the current gear as the R gear, so that the electric vehicle is switched from the N gear 102 to the R gear 103.

The gear conditions for switching the D gear 101 to the R gear 103 are as follows: the vehicle control unit 3 acquires a lower redial voltage signal of the hand-gear shifting controller 1 through the hard wire 2, and a brake pedal is stepped on, wherein the vehicle speed is less than 3kph, namely the vehicle speed along the advancing direction of the vehicle is less than 3 kph; when the gear condition is met, the vehicle control unit 3 outputs the current gear as the R gear 103, so that the gear switching of the electric vehicle from the D gear 101 to the R gear 103 is realized.

The gear conditions for switching the P gear 104 to the N gear 102 are as follows: the vehicle control unit 3 acquires that the P gear pressing voltage signal of the hand gear shifting controller 1 is cancelled through the hard wire 2, the vehicle control unit 3 outputs the current gear to be the N gear 102, and the electric vehicle is switched from the P gear 104 to the N gear 102, that is, the P gear 104 is cancelled, and then the N gear 102 is switched to but the D gear 101 or the R gear 103 cannot be directly switched to.