JP2009197857A - Speed change controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speed change controller that controls not only a vehicle speed of a vehicle and an opening degree of a throttle but also the speed change of a transmission corresponding to a battery state in order to surely charge a battery. <P>SOLUTION: Two speed change conditions for executing the speed change by a transmission are stored beforehand. The speed change condition is determined to the first or second speed change condition in accordance with whether or not a voltage V of a vehicle battery exceeds a prescribed voltage Vmin, whether or not an integrated value Σi of a current flowing in the battery exceeds each prescribed integrated value I1, I2, and further, whether or not a vehicle is reducing its speed. Then, the speed-change control is executed on the basis of the determined speed-change condition. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shift control device that controls the shift of an automatic vehicle based not only on the vehicle speed and the throttle opening, but also on the remaining capacity of a battery mounted on the vehicle.

  In recent years, from the viewpoint of vehicle safety, convenience, comfort, product power, and the like, the number of devices mounted on vehicles has been steadily increasing. For example, in addition to in-vehicle devices such as an electric brake and electric power steering that operate while the vehicle is running, in-vehicle devices such as a car navigation device that operates even when the vehicle is stopped, a remote locking and unlocking system, and a lamp are disposed in the vehicle. ing. In-vehicle devices that operate while the vehicle is stopped are supplied with electric power from a battery mounted on the vehicle. However, the electric power that can be stored in the battery is limited, and so-called battery run-up is caused by using the in-vehicle device for a long time while the vehicle is stopped.

  Electric power stored in the battery is stored in a generator such as an alternator when the engine is operating such as when the vehicle is running, and is supplied to on-vehicle equipment when the engine is not operating such as when the vehicle is stopped. The Therefore, when the remaining capacity of the electric power stored in the battery is reduced, it is necessary to charge the battery actively by rotating the engine.

In Patent Document 1, when the charge amount of the battery is reduced, the shift down timing of the automatic transmission during deceleration operation is made earlier than usual so that the engine rotation speed during deceleration operation is made higher than normal, and deceleration regeneration is performed. There has been proposed a vehicle control device capable of quickly recovering the amount of charge of a battery by increasing the amount of generated power. Furthermore, this control device prevents the engine rotation speed from lowering below the fuel cut return rotation speed at an early stage by increasing the engine rotation speed during deceleration operation to be higher than normal, thereby reducing the fuel cut period during deceleration. Longer fuel consumption can be improved.
JP 2006-125589 A

  The vehicle control device described in Patent Document 1 is configured to charge the battery by increasing the rotational speed of the engine during deceleration operation of the vehicle. However, when the vehicle is decelerated, for example, when the vehicle is stopped for waiting for a signal or the like, the period of the decelerating operation is often about several seconds. For this reason, even when the rotational speed of the engine is increased during the deceleration operation, little power is charged in the battery.

  The present invention has been made in view of such circumstances, and an object of the present invention is to store a plurality of transmission speed conditions according to the traveling speed of the vehicle and the opening of the throttle. By determining the state of charge and determining one shift condition from a plurality of shift conditions stored based on the determination result to control the shift by the transmission, the shift of the transmission according to the state of the battery is controlled. An object of the present invention is to provide a shift control device that can be performed and can prevent the remaining capacity of the battery from being reduced.

  Another object of the present invention is to detect whether the voltage of the battery of the vehicle is exceeded and to determine whether the voltage exceeds the predetermined voltage, calculate the amount of current flowing into the battery, and whether to exceed the predetermined current amount. And determining one shift condition from a plurality of shift conditions stored based on these determination results to control the shift by the transmission, thereby accurately determining the state of the battery, An object of the present invention is to provide a shift control device capable of accurately shifting a transmission according to a state.

  Another object of the present invention is to provide two shift conditions, a first shift condition in which the shift timing is set to a low vehicle speed and a second shift condition in which the shift timing is set to a high vehicle speed. Is stored, and when the battery voltage does not exceed the predetermined voltage, the shift is controlled under the second shift condition, so that when the battery voltage decreases, the engine speed increases to An object of the present invention is to provide a shift control device that can perform charging.

  Another object of the present invention is to control shifting under the first shift condition when the voltage of the battery exceeds a predetermined voltage and the amount of current flowing into the battery exceeds the predetermined amount of current. Thus, it is an object of the present invention to provide a shift control device that can perform a shift with a reduced engine rotation speed when the battery has sufficient electric power.

  Another object of the present invention is that the battery voltage exceeds a predetermined voltage, and the amount of current flowing into the battery does not exceed the first predetermined current amount. If the vehicle is decelerating, the shift is controlled under the second shift condition if the vehicle is decelerating, and if the vehicle is not decelerating, the shift is controlled under the first shift condition. In this case, it is an object of the present invention to provide a speed change control device that can increase the rotational speed of an engine only during vehicle deceleration.

  Another object of the present invention is to shift gears under the second shift condition when the voltage of the battery exceeds a predetermined voltage and the amount of current flowing into the battery does not exceed the second predetermined current amount. By adopting a control structure, when the remaining capacity of the battery is further reduced, a shift that can charge the battery by increasing the engine speed regardless of whether the vehicle is traveling at a reduced speed or not. It is to provide a control device.

  Another object of the present invention is to control the shift under the second shift condition when the voltage of the battery exceeds a predetermined voltage and the amount of current flowing into the battery does not exceed the predetermined current amount. Thus, an object of the present invention is to provide a shift control device that can charge the battery by increasing the engine speed when the remaining capacity of the battery decreases.

  A speed change control device according to a first aspect of the present invention is mounted on a vehicle and detected by a speed detection means for detecting the vehicle speed of the vehicle, an opening degree detection means for detecting the throttle opening of the vehicle, and the speed detection means. A shift control device comprising a shift control means for controlling a shift by the transmission of the vehicle based on a vehicle speed and a throttle opening detected by the opening detection means, based on the vehicle speed of the vehicle and the throttle opening. Shift condition storage means for storing a plurality of shift conditions for shifting the transmission according to the charge state of a battery mounted on the vehicle, and battery determination means for determining the charge state of the battery mounted on the vehicle And shift condition determining means for determining one shift condition from a plurality of shift conditions stored by the shift condition storing means based on the determination result of the battery determining means, The shift control means controls the shift by the transmission based on the vehicle speed detected by the speed detection means, the throttle opening detected by the opening detection means, and the shift conditions determined by the shift condition determination means. It is characterized by the above.

  In the present invention, in a vehicle of an automatic transmission that automatically performs a shift by a transmission according to the vehicle speed of the vehicle and the opening of a throttle, the shift control device controls the shift according to the state of the battery of the vehicle. In a conventional vehicle, one shift condition corresponding to the traveling speed and the throttle opening is stored, and the shift of the transmission is controlled according to the shift condition. In the present invention, a plurality of shift conditions are stored. Keep it. The state of the battery can be determined by performing voltage detection, current detection, and the like. One shift condition is determined from a plurality of shift conditions stored on the basis of the determination result, and the shift speed corresponding to the determined shift condition is determined. Take control. Thereby, for example, when the remaining capacity of the battery is reduced, the shift control is performed using the shift condition that gives priority to the traveling in the low gear, so that the remaining capacity of the battery can be increased. Further, when the remaining capacity of the battery is sufficient, it is possible to perform fuel-saving traveling by using a speed change condition that prioritizes traveling with a high gear.

  Further, the speed change control device according to the second invention is based on the voltage detection means for detecting the voltage of the battery, the current detection means for detecting the current flowing into the battery, and the current detected by the current detection means. Current amount calculation means for calculating the amount of current flowing into the battery, wherein the battery determination means determines whether the voltage detected by the voltage detection means exceeds a predetermined voltage, and calculates the current amount. It is characterized in that it is determined whether or not the amount of current calculated by the means exceeds a predetermined amount of current.

  In the present invention, the shift control device detects the voltage of the battery and determines whether or not the predetermined voltage is exceeded, detects the current flowing into the battery, calculates the amount of current flowing into the battery, It is determined whether or not the integrated value exceeds a predetermined integrated value. When the remaining capacity of the battery is significantly reduced, the voltage of the battery is decreased. Therefore, the shift control device can determine the remaining capacity of the battery by detecting the voltage of the battery. Further, by calculating the amount of current flowing into the battery, the shift control device can determine in detail the amount of power stored in the battery. Therefore, the shift control device determines one shift condition from a plurality of shift conditions stored as shift conditions used for shift control based on the determination result of the voltage of the battery and the amount of current flowing into the battery. By performing the shift control according to the shift condition, it is possible to perform the shift control suitable for the remaining battery capacity.

  In the shift control device according to the third aspect of the present invention, the shift condition storing means sets the first shift condition in which the shift timing is set to a low vehicle speed, and the shift timing is set to be higher than the first shift condition. Second shift conditions are stored, and the shift condition determination means sets the second shift conditions when the battery determination means determines that the voltage detected by the voltage detection means does not exceed a predetermined voltage. It is characterized by being determined.

  In the present invention, the first shift condition in which the shift timing is set to a low vehicle speed and the second shift condition in which the shift timing is set to a higher vehicle speed are stored. For example, when the shift control is performed using the second shift condition, the shift is not performed until the high vehicle speed is reached when the vehicle is accelerated, and the shift is performed immediately when the vehicle is decelerated below the high vehicle speed. The period during which the engine rotates at a high speed becomes longer than when the first shift condition is used, and the amount of charge of the battery increases. Therefore, when it is determined that the battery voltage does not exceed the predetermined voltage and the remaining battery capacity is significantly reduced, the shift control device controls the shift according to the second shift condition to charge the battery.

  In the shift control device according to the fourth aspect of the present invention, the shift condition determining means determines that the battery determining means determines that the voltage detected by the voltage detecting means exceeds a predetermined voltage, and the current amount calculating means calculates When the battery determination means determines that the amount of current that has exceeded a predetermined amount of current, the first shift condition is determined.

  In the present invention, when it is determined that the battery voltage exceeds a predetermined voltage and the remaining capacity of the battery is not significantly reduced, the amount of current flowing into the battery is examined. Since this current amount increases when current flows into the battery and decreases when current flows out, the remaining capacity of the battery can be accurately determined by calculating the current amount. . Therefore, when the amount of current flowing into the battery exceeds the predetermined amount of current and it can be determined that the battery is sufficiently charged, the shift control device controls the shift according to the first shift condition to reduce the engine load. Driving with reduced fuel consumption. In addition, although said electric current amount was made into the electric current amount which flowed into the battery, it can also be set as the structure which calculates the electric current amount which flowed out from the battery and determines the remaining capacity of a battery.

  The shift control device according to a fifth aspect of the present invention further includes deceleration determination means for determining whether or not the vehicle is decelerating, wherein the shift condition determination means is configured such that the voltage detected by the voltage detection means is a predetermined voltage. The battery determination means determines that the current amount calculated by the current amount calculation means does not exceed the first predetermined current amount, and the current amount is less than the first predetermined current amount. When the battery determination means determines that the predetermined current amount is exceeded, the second shift condition is determined when the deceleration determination means determines that the vehicle is decelerating, and the vehicle decelerates. When the deceleration determination means determines that the vehicle is not in the middle, the first shift condition is determined.

  In the present invention, it can be determined that the battery voltage does not exceed the predetermined voltage and the remaining capacity of the battery is not significantly reduced, but the amount of current flowing into the battery is less than the first predetermined current amount and the second predetermined current. If it is determined that the remaining capacity of the battery is slightly reduced when the amount exceeds the amount (provided that the first predetermined current amount> the second predetermined current amount), the shift control device determines whether the vehicle is decelerating. Find out. The shift control device controls the shift according to the second shift condition when the vehicle is decelerating and charges the battery, and decelerates according to the first shift condition when not decelerating. When the shift control is performed under the second shift condition, the traveling period in the low speed gear increases. Therefore, when the degree of decrease in the remaining capacity of the battery is small, the control is performed under the second shift condition only during the decelerating travel. Controls noise generation and fuel consumption deterioration caused by running on the road.

  In the shift control device according to the sixth aspect of the present invention, the shift condition determining means determines that the battery determining means determines that the voltage detected by the voltage detecting means exceeds a predetermined voltage, and the current amount calculating means calculates When the battery determination means determines that the amount of current does not exceed the second predetermined current amount, the second shift condition is determined.

  In the present invention, even when the voltage of the battery exceeds a predetermined voltage, if the amount of current flowing into the battery does not exceed the second predetermined current amount, it can be determined that the remaining capacity of the battery is significantly reduced. . Therefore, regardless of whether or not the vehicle is traveling at a reduced speed, the shift control device controls the shift according to the second shift condition to increase the rotational speed of the engine and reliably charge the battery.

  Further, in the shift control device according to the seventh aspect of the invention, the shift condition determining means determines that the battery determining means determines that the voltage detected by the voltage detecting means exceeds a predetermined voltage, and the current amount calculating means calculates When the battery determination means determines that the amount of current does not exceed a predetermined amount of current, the second shift condition is determined.

  In the present invention, even when the voltage of the battery exceeds a predetermined voltage, if the amount of current flowing into the battery does not exceed the predetermined current amount, it can be determined that the remaining capacity of the battery is significantly reduced. Therefore, regardless of whether or not the vehicle is traveling at a reduced speed, the shift control device controls the shift according to the second shift condition to increase the rotational speed of the engine and reliably charge the battery.

  According to the present invention, a plurality of transmission conditions for the transmission are stored, the state of charge of the battery is determined, one transmission condition is determined from the stored plurality of transmission conditions based on the determination result, and the transmission by the transmission is performed. By controlling the vehicle, it is possible to perform shift control suitable for the state of the battery and prevent a decrease in the remaining capacity of the battery. The reliability which concerns on can be improved.

  In the case of the present invention, the battery state is determined by determining whether the voltage of the battery exceeds a predetermined voltage and determining whether the amount of current flowing into the battery exceeds the predetermined current amount. By doing so, it is possible to accurately determine the state of the battery, and to accurately control the shift suitable for the state of the battery, so it is possible to reliably prevent a decrease in the remaining capacity of the battery, The reliability related to the traveling of the vehicle can be reliably improved.

  Further, according to the present invention, two shift conditions, the first shift condition in which the shift timing is set to the low vehicle speed and the second shift condition set to the high vehicle speed, are stored, and the battery voltage is predetermined. If the voltage is not exceeded and the shift is controlled under the second shift condition, the battery can be charged by increasing the engine speed when it can be determined that the remaining capacity of the battery is significantly reduced. Therefore, it is possible to more reliably prevent the remaining capacity of the battery from decreasing.

  Further, according to the present invention, when the battery voltage exceeds the predetermined voltage and the current amount exceeds the predetermined current amount, the shift is controlled under the first shift condition, so that the battery can receive electric power. When it can be determined that the battery is sufficiently accumulated, the vehicle can travel with reduced engine rotation speed, so the vehicle can perform fuel-saving travel with reduced engine load, and the remaining battery capacity can be reduced. The vehicle can travel efficiently without incurring a decrease.

  Further, according to the present invention, when the battery voltage exceeds the predetermined voltage and the current amount does not exceed the first predetermined current amount but exceeds the second predetermined current amount that is smaller than this, the vehicle is decelerating. If it can be determined that the remaining capacity of the battery has been slightly reduced by controlling the shift under the second shift condition and controlling the shift under the first shift condition if the vehicle is not decelerating, Since the engine can run at a higher speed only while decelerating, it is possible to charge the battery reliably by minimizing the running in the low-speed gear, and the vehicle can run more efficiently. it can.

  Further, according to the present invention, when the battery voltage exceeds the predetermined voltage and the current amount does not exceed the second predetermined integrated value, the shift is controlled under the second shift condition. When it can be determined that the remaining capacity of the battery is drastically reduced, the battery can be charged reliably because the engine can run at a higher speed regardless of whether the vehicle is running at a reduced speed. It is possible to prevent the remaining capacity of the battery from being reduced more reliably.

  Further, according to the present invention, when the battery voltage exceeds the predetermined voltage and the current amount does not exceed the predetermined current amount, the shift is controlled under the second shift condition, so that the remaining battery power is maintained. When it can be determined that the capacity has been reduced, the engine can be run at a higher rotational speed, so that the battery can be reliably charged and the remaining capacity of the battery can be prevented more reliably. it can.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a block diagram showing a configuration of a shift control apparatus according to the present invention. In the figure, reference numeral 1 denotes an alternator, which converts a rotational force generated by a vehicle engine (not shown) into electric power. The alternator 1 converts a rotational force into an alternating current power by a field rotor and an electric stator connected to the engine, and converts the alternating current power into a direct current power by a rectifier circuit composed of a diode or the like. They are converted and output. In the alternator 1, a battery 2 and other in-vehicle devices are connected via a power cable or the like, and power is supplied to the battery 2 and other in-vehicle devices.

  The battery 2 is a lead storage battery, for example, and performs charging / discharging by the chemical reaction of an electrode and electrolyte solution. The battery 2 stores this power when the vehicle engine is operating and power is supplied from the alternator 1, and when the engine is not operating and power is not supplied from the alternator 1. The accumulated electric energy is supplied to other in-vehicle devices of the vehicle. The speed change control device of the present invention includes a current detection unit 3 that detects a current flowing into the battery 2 and a voltage detection unit 4 that detects the voltage of the battery 2. The current detection unit 3 supplies the detected current value i of the battery 2 to the current integration unit 11 of the power supply state determination unit 10. The voltage detection unit 4 is configured to give the detected voltage value V of the battery 2 to the power supply state determination unit 10.

  The current integration unit 11 of the power supply state determination unit 10 samples the current value i given from the current detection unit 3 at a predetermined time interval, and integrates the sampled current value i to obtain the amount of current flowing into the battery 2. The integrated current value Σi is calculated. The current detector 3 detects the current value i with the current flowing into the battery 2 as a positive value and the current flowing out from the battery 2 as a negative value. Therefore, the current integration value Σi calculated by the current integration unit 11 increases when the battery 2 is charged, and decreases when the battery 2 is discharged. Thereby, the power supply state determination unit 10 can determine the remaining capacity of the battery 2.

  The power supply state determination unit 10 determines the state of the battery 2 based on the current integration value Σi integrated by the current integration unit 11 and the voltage value V of the battery 2 detected by the voltage detection unit 4. Specifically, first, the power state determination unit 10 compares the voltage value V of the battery 2 with a predetermined voltage Vmin, and determines whether or not the voltage value V of the battery 2 exceeds the predetermined voltage Vmin. When the voltage value V of the battery 2 does not exceed the predetermined voltage Vmin, the power supply state determination unit 10 can determine that the remaining capacity of the electric power stored in the battery 2 is significantly reduced (V ≦ Vmin → The remaining capacity has been significantly reduced.

  When the voltage value V of the battery 2 exceeds the predetermined voltage Vmin, the power supply state determination unit 10 further calculates the current integration value Σi calculated by the current integration unit 11 and the predetermined integration value (first predetermined current amount) I1. A comparison is made to determine whether or not the current integrated value Σi exceeds a predetermined integrated value I1. When the current integrated value Σi exceeds the predetermined integrated value I1, the power supply state determination unit 10 can determine that the battery 2 is in a state where power is sufficiently accumulated (V> Vmin and Σi> I1 → sufficient power Is accumulated).

  When the current integrated value Σi does not exceed the predetermined integrated value I1, the power supply state determination unit 10 determines that the current integrated value Σi and the predetermined integrated value (second predetermined current amount) I2 (however, the predetermined integrated value I2 <the predetermined integrated value I1). And the current integrated value Σi exceeds the predetermined integrated value I2. When the current integrated value Σi exceeds the predetermined integrated value I2, the power supply state determination unit 10 can determine that the remaining capacity of the electric power stored in the battery 2 is slightly reduced (V> Vmin and I2 <Σi ≦ I1 → Remaining capacity is slightly reduced).

  When the current integrated value Σi does not exceed the predetermined integrated value I2, the power supply state determination unit 10 can determine that the remaining capacity of the electric power stored in the battery 2 is significantly reduced (V> Vmin and Σi ≦ I2 → The state in which the remaining capacity is significantly reduced. The power supply state determination unit 10 determines the state of the battery 2 as described above, and notifies the shift control unit 20 of the determination result. The predetermined voltage Vmin and the predetermined integrated values I1 and I2 are determined depending on the characteristics of the alternator 1, the characteristics of the battery 2, the characteristics of each in-vehicle device mounted on the vehicle, etc. Appropriate values are predetermined in the manufacturing stage.

  The shift control unit 20 automatically performs a shift by the transmission 35 of the automatic vehicle. The shift control unit 20 includes a brake sensor 31 that detects the presence or absence of an operation on the brake of the vehicle, a vehicle speed sensor 32 that detects the traveling speed of the vehicle, and a throttle opening detection unit 33 that detects the throttle opening of the vehicle engine. Detection results are given from the above, and a shift by the transmission 35 is performed according to these detection results.

  In addition, the speed change control device of the present invention includes a storage unit 25 configured by a memory element such as a mask ROM (Read Only Memory) or an EEPROM (Electrically Erasable Programmable ROM). The storage unit 25 stores in advance a plurality of shift conditions for the shift control unit 20 to perform a shift by the transmission 35, and the shift control unit 20 shifts using one of the shift conditions of the storage unit 25. To do.

  FIG. 2 is a schematic diagram illustrating an example of a shift condition stored in the storage unit 25 in advance. For simplification of explanation, it is assumed that the transmission 35 can shift to three speeds of 1st speed, 2nd speed and 3rd speed, and FIG. 2 shows a speed change according to the vehicle speed and the throttle opening of the vehicle. The conditions are shown as a graph. FIG. 2 (a) shows the shift conditions when shifting up the transmission 35, and FIG. 2 (b) shows the shift conditions when shifting down. The storage unit 25 stores two shift conditions, a first shift condition and a second shift condition. The first shift condition is indicated by a solid line, and the second shift condition is indicated by a broken line. The shift control unit 20 acquires the vehicle speed detected by the vehicle speed sensor 32 and the throttle opening detected by the throttle opening detection unit 33, and selects an appropriate gear based on the illustrated first shift condition or second shift condition. To change the speed.

  Comparing the first speed change condition and the second speed change condition, if the throttle opening is the same both at the time of upshifting and at the time of downshifting, if the speed change is performed under the second speed change condition, The shift is performed at a higher vehicle speed than when the shift is performed at. In other words, when the shift control unit 20 shifts the transmission 35 using the second shift condition, the period during which the vehicle travels at a low gear is longer than when the first shift condition is used. When the vehicle is traveling at a low gear, the rotational speed (the number of rotations) of the vehicle engine increases, so the amount of power generated by the alternator 1 increases and the amount of power supplied to the battery 2 increases. Charges quickly.

  FIG. 3 is a schematic diagram for explaining the difference between the first shift condition and the second shift condition, and shows only the condition for shifting the transmission 35 to the first speed or the second speed. 3A shows a case where the vehicle accelerates, FIG. 3B shows a case where the vehicle decelerates, and FIG. 3C shows a case where the vehicle travels at a constant speed. Similarly to FIG. 2, the first speed change condition is indicated by a solid line, and the second speed change condition is indicated by a broken line.

  For example, when the vehicle accelerates at a certain throttle opening (see arrow A in FIG. 3A), the vehicle reaches the vehicle speed v when the shift control unit 20 performs a shift using the first shift condition. At that time, the transmission 35 is shifted from the first speed to the second speed. On the other hand, when the shift control unit 20 performs a shift using the second shift condition, the transmission 35 starts from the first speed when the vehicle reaches the vehicle speed v ′ (where v ′> v). Shifted to second gear. Therefore, during the period until the vehicle speed reaches from v to v ′, the vehicle travels at the first speed when the second speed change condition is used, compared to when the first speed change condition is used.

  When the vehicle decelerates at a certain throttle opening (see arrow B in FIG. 3 (b)), when the shift control unit 20 performs a shift using the first shift condition, 2 until the vehicle decelerates to the vehicle speed v. No speed change from the first speed to the first speed is performed. On the other hand, when the shift control unit 20 performs a shift using the second shift condition, the transmission 35 starts from the second speed when the vehicle decelerates to the vehicle speed v ′ (where v ′> v). Shifted to first speed. Therefore, during the period until the vehicle speed is decelerated from v ′ to v, the shift from the second speed to the first speed is performed faster when the second shift condition is used than when the first shift condition is used, The vehicle travels at a first speed for a long period.

  When the vehicle travels at a vehicle speed v at a certain throttle opening (see point C1 in FIG. 3 (c)), if the shift control unit 20 is shifting using the first shift condition, the vehicle Drive on. On the other hand, when the shift control unit 20 shifts using the second shift condition, the vehicle travels at the first speed. Further, when the vehicle travels at the vehicle speed v ′ (see point C2 in FIG. 3 (c)), even if the shift control unit 20 uses either the first shift condition or the second shift condition, the vehicle Drive in 2nd speed.

  As described above, the shift control unit 20 can change the timing of the shift by the transmission 35 by appropriately switching and using the two shift conditions stored in the storage unit 25 in advance. When the shift control unit 20 performs a shift using the second shift condition, the traveling period in the low-speed gear is increased and the amount of electric power charged in the battery 2 is increased compared to the case where the first shift condition is used. be able to. Further, when the shift control unit 20 performs a shift using the first shift condition, the traveling period in the low speed gear is reduced, and traveling with low fuel consumption can be realized. Therefore, the shift control unit 20 is stored in the storage unit 25 according to the above determination result by the power supply state determination unit 10 and the traveling state of the vehicle (specifically, whether or not the vehicle is decelerating). Which of the two shift conditions is to be used is determined.

  When the power state determination unit 10 determines that the power of the battery 2 is sufficiently accumulated (that is, when V> Vmin and Σi> I1), the shift control unit 20 sets the shift condition to the first shift condition. The first shift condition is acquired from the storage unit 25, and the shift by the transmission 35 is performed according to the first shift condition. Further, when the power supply state determination unit 10 determines that the remaining capacity of the electric power stored in the battery 2 is significantly reduced (that is, when V ≦ Vmin, or when V> Vmin and Σi ≦ I2), The shift control unit 20 determines the shift condition as the second shift condition, acquires the second shift condition from the storage unit 25, and performs a shift by the transmission 35 according to the second shift condition.

  When the power supply state determination unit 10 determines that the remaining capacity of the electric power stored in the battery 2 is slightly reduced (that is, when V> Vmin and I2 <Σi ≦ I1), the shift control unit 20 It is determined whether the vehicle is decelerating. Whether the vehicle is decelerating or not can be determined by the shift control unit 20 based on the detection result of whether or not the brake by the brake sensor 31 is operated, the detection result of the vehicle speed by the vehicle speed sensor 32, or the like. it can. When the vehicle is traveling at a reduced speed, the shift control unit 20 determines the shift condition as the second shift condition, and performs a shift by the transmission 35 according to the second shift condition. When the vehicle is not traveling at a reduced speed, the shift control unit 20 determines the shift condition as the first shift condition, and performs a shift by the transmission 35 according to the first shift condition.

  FIG. 4 is a flowchart showing a procedure of processing performed by the shift control device according to the present invention, which is processing performed by the power supply state determination unit 10 and the shift control unit 20. First, the shift control device checks whether or not the voltage V of the battery 2 detected by the voltage detection unit 4 exceeds a predetermined voltage Vmin (step S1). When the voltage V of the battery 2 does not exceed the predetermined voltage Vmin (S1: NO), it is determined that the remaining capacity of the electric power stored in the battery 2 has been significantly reduced, so that the shift control device includes the shift control unit 20. Determines the speed change condition used for speed change as the second speed change condition (step S6).

  When the voltage V of the battery 2 exceeds the predetermined voltage Vmin (S1: YES), the shift control device further checks whether or not the current integrated value Σi by the current integrating unit 11 exceeds the predetermined integrated value I1 (step S2). When the current integrated value Σi exceeds the predetermined integrated value I1 (S2: YES), it is determined that the power of the battery 2 is sufficiently accumulated, so the shift control device uses the shift control unit 20 to perform a shift for shifting. The condition is determined as the first speed change condition (step S5).

  If the current integrated value Σi does not exceed the predetermined integrated value I1 (S2: NO), the shift control device further checks whether or not the current integrated value Σi by the current integrating unit 11 exceeds the predetermined integrated value I2 (step S3). . If the current integrated value Σi does not exceed the predetermined integrated value I2 (S3: NO), it is determined that the remaining capacity of the electric power stored in the battery 2 is in a significantly reduced state. Determines the speed change condition used for speed change as the second speed change condition (step S6).

  When the current integrated value Σi exceeds the predetermined integrated value I2 (S3: YES), it is determined that the remaining capacity of the electric power stored in the battery 2 is slightly reduced. Based on the detection result of the vehicle speed sensor 32 or the like, it is further examined whether or not the vehicle is decelerating (step S4). When the vehicle is decelerating (S4: YES), the shift control device determines the shift condition used by the shift control unit 20 for shifting as the second shift condition (step S6), and when the vehicle is not decelerating ( (S4: NO), the shift control device determines the shift condition used by the shift control unit 20 for shifting as the first shift condition (step S5).

  After the shift condition is determined to be either the first shift condition or the second shift condition in step S5 or step S6, the shift control device performs a process related to the shift of the transmission 35 based on the determined shift condition. (Step S7), the process ends. In addition, since the process of above-mentioned step S1-S7 is a process always performed during driving | running | working of a vehicle, the transmission control apparatus repeats the process of step S1-S7.

  The shift control device having the above configuration stores a plurality of shift conditions in the storage unit 25, determines whether or not the voltage of the battery 2 detected by the voltage detection unit 4 exceeds a predetermined voltage, and the current integration unit 11 It is determined whether or not the calculated integrated value of the current flowing to the battery 2 exceeds a predetermined integrated value, and the shift control unit 20 performs a shift by the transmission 35 based on one shift condition determined based on these determination results. By adopting the control configuration, the power supply state determination unit 10 can accurately determine the state relating to the remaining capacity of the battery 2, and the shift control unit 20 can perform shift control suitable for the state of the battery 2. it can. Therefore, a decrease in the remaining capacity of the battery 2 can be prevented, and the reliability of the vehicle can be improved.

  Further, two shift conditions, a first shift condition in which the shift timing is set to a low vehicle speed and a second shift condition set to a high vehicle speed, are stored in the storage unit 25, and the voltage detection unit 4 detects the shift condition. When the voltage V of the battery 2 does not exceed the predetermined voltage Vmin, the shift control unit 20 is configured to control the shift under the second shift condition, so that if the remaining capacity of the battery 2 is significantly reduced, the power state When the determination part 10 can determine, since the battery 2 can be charged by increasing the rotational speed of the vehicle engine, it is possible to reliably prevent the remaining capacity of the battery 2 from decreasing.

  Further, when the voltage V of the battery 2 exceeds the predetermined voltage Vmin and the current integrated value Σi exceeds the predetermined integrated value I1, the shift control unit 20 controls the shift under the first shift condition. When the power supply state determination unit 10 can determine that the battery 2 has sufficiently stored electric power, the engine speed can be reduced and the fuel consumption can be reduced while reducing the engine load. Thus, the vehicle can travel efficiently without causing a decrease in the remaining capacity of 2.

  Further, when the voltage V of the battery 2 exceeds the predetermined voltage Vmin, and the current integrated value Σi does not exceed the predetermined integrated value I1, but exceeds the second predetermined integrated value I2, the shift control unit 20 is decelerating the vehicle. When the power supply state determination unit 10 can determine that the remaining capacity of the battery has slightly decreased by controlling the shift under the second shift condition and controlling the shift under the first shift condition if the vehicle is not decelerating. In addition, it is possible to travel with the engine speed increased only while the vehicle is decelerating. Therefore, the battery 2 can be reliably charged while traveling at the low speed gear to a minimum, and the vehicle can travel more efficiently.

  Further, when the voltage V of the battery 2 exceeds the predetermined voltage Vmin and the current integrated value Σi does not exceed the second predetermined integrated value I2, the shift control unit 20 controls the shift under the second shift condition. With this configuration, when the power supply state determination unit 10 can determine that the remaining capacity of the battery 2 is significantly reduced, the engine speed is increased regardless of whether the vehicle is traveling at a reduced speed. Since traveling can be performed, the battery can be reliably charged, and a decrease in the remaining capacity of the battery can be prevented more reliably.

  In the present embodiment, two shift conditions, the first shift condition and the second shift condition, are stored in the storage unit 25. However, the present invention is not limited to this, and three or more shift conditions are stored in the storage unit 25. In this case, one shift condition may be determined in accordance with the voltage value V detected by the voltage detection unit 4 and the current integration value Σi calculated by the current integration unit 11. Further, the shift condition may be determined in consideration of not only the voltage value V and the integrated current value Σi but also other factors (for example, vehicle speed, outside air temperature, fuel remaining amount, etc.). In FIG. 1, the power supply state determination unit 10 and the shift control unit 20 are illustrated as different functional blocks. However, the present invention is not limited to this, and the power supply state determination unit 10 and the shift control unit 20 are realized by a single microcomputer. It is good also as a structure provided integrally, such as doing.

  Further, although the current detection unit 3 detects the current flowing into the battery 2 and the current integration unit 11 calculates the integrated value of the current flowing into the battery 2, the current detection unit 3 is not limited to this. The current flowing out from the battery 2 may be detected, and the current integrating unit 11 may calculate the integrated value of the current flowing out from the battery 2. This is a difference in which of the current directions is positive, and there is no substantial difference. When the current detector 3 is configured to detect the current flowing out of the battery 2, the inequality sign of the determination condition may be reversed in steps S2 and S3 of the flowchart shown in FIG.

(Modification)
In the above-described embodiment, when the voltage V of the battery 2 exceeds the predetermined voltage Vmin and the current integrated value Σi does not exceed the predetermined integrated value I1, but exceeds the second predetermined integrated value I2, the vehicle decelerates. The shift condition is determined according to whether or not the vehicle is in the middle. In this configuration, it is necessary to check whether or not the vehicle is decelerating, and the processing performed by the shift control device is complicated. In the following modifications, an example in which the processing performed by the shift control device is simplified will be described.

  FIG. 5 is a flowchart showing a procedure of processing performed by the shift control device according to the modification of the present invention, and is processing performed by the power supply state determination unit 10 and the shift control unit 20. First, the shift control device checks whether or not the voltage V of the battery 2 detected by the voltage detection unit 4 exceeds a predetermined voltage Vmin (step S21). If the voltage V of the battery 2 does not exceed the predetermined voltage Vmin (S21: NO), it is determined that the remaining capacity of the electric power stored in the battery 2 is in a significantly reduced state. Determines the speed change condition used for the speed change as the second speed change condition (step S24).

  If the voltage V of the battery 2 exceeds the predetermined voltage Vmin (S21: YES), the shift control device further checks whether or not the current integrated value Σi by the current integrating unit 11 exceeds the predetermined integrated value I1 (step S22). If the current integrated value Σi exceeds the predetermined integrated value I1 (S22: YES), it is determined that the power of the battery 2 is sufficiently accumulated, so that the shift control unit 20 uses the shift control unit 20 for shifting. The condition is determined as the first speed change condition (step S23).

  If the current integrated value Σi does not exceed the predetermined integrated value I1 (S22: NO), it is determined that the remaining capacity of the electric power stored in the battery 2 is in a reduced state. The speed change condition used for the speed change is determined as the second speed change condition (step S24). After the shift condition is determined to be either the first shift condition or the second shift condition in step S23 or step S24, the shift control device performs a process related to the shift of the transmission 35 based on the determined shift condition. (Step S25), the process ends.

  If the current integrated value Σi does not exceed the predetermined integrated value I1 as in the above-described modification, it is determined that the remaining capacity of the battery has decreased, and whether the engine is decelerating or not Since traveling with an increased rotational speed can be performed, the battery 2 can be reliably charged, and a decrease in the remaining capacity of the battery 2 can be reliably prevented.

It is a block diagram which shows the structure of the transmission control apparatus which concerns on this invention. It is a schematic diagram which shows an example of the speed change conditions previously memorize | stored in the memory | storage part. It is a schematic diagram for demonstrating the difference of a 1st speed change condition and a 2nd speed change condition. It is a flowchart which shows the procedure of the process which the transmission control apparatus which concerns on this invention performs. It is a flowchart which shows the procedure of the process which the transmission control apparatus which concerns on the modification of this invention performs.

Explanation of symbols

1 Alternator 2 Battery 3 Current detection unit (current detection means)
4 Voltage detector (voltage detection means)
10 Power supply state determination unit (battery determination means)
11 Current integration unit (current amount calculation means)
20 Shift control unit (shift control means, shift condition determination means, deceleration determination means)
25 Storage section (shift condition storage means)
31 Brake sensor 32 Vehicle speed sensor (speed detection means)
33 Throttle opening detector (opening detector)
35 Transmission

Claims (7)

Mounted on a vehicle, a speed detecting means for detecting the vehicle speed of the vehicle, an opening detecting means for detecting the opening of the throttle of the vehicle, a vehicle speed detected by the speed detecting means and the opening detecting means In a shift control device comprising shift control means for controlling shift by the transmission of the vehicle based on the opening of the throttle,
Shift condition storage means for storing a plurality of shift conditions for shifting the transmission based on the vehicle speed of the vehicle and the opening of the throttle according to the state of charge of a battery mounted on the vehicle;
Battery determination means for determining a state of charge of a battery mounted on the vehicle;
Shift condition determining means for determining one shift condition from a plurality of shift conditions stored by the shift condition storing means based on the determination result of the battery determining means;
The shift control means controls the shift by the transmission based on the vehicle speed detected by the speed detection means, the throttle opening detected by the opening detection means, and the shift conditions determined by the shift condition determination means. A speed change control device characterized by being configured as described above. Voltage detecting means for detecting the voltage of the battery;
Current detecting means for detecting current flowing into the battery;
A current amount calculating means for calculating a current amount flowing into the battery based on the current detected by the current detecting means; and
The battery determination means includes
While determining whether the voltage detected by the voltage detection means exceeds a predetermined voltage,
The speed change control device according to claim 1, wherein it is determined whether or not the current amount calculated by the current amount calculation means exceeds a predetermined current amount. The shift condition storage means stores a first shift condition in which the shift timing is set to a low vehicle speed, and a second shift condition in which the shift timing is set to be higher than the first shift condition,
The shift condition determining means determines the second shift condition when the battery determining means determines that the voltage detected by the voltage detecting means does not exceed a predetermined voltage. Item 3. The gear change control device according to Item 2. The shift condition determining means includes
When the voltage detected by the voltage detection means exceeds a predetermined voltage, the battery determination means determines,
And when the battery determination means determines that the current amount calculated by the current amount calculation means exceeds a predetermined current amount,
The shift control device according to claim 3, wherein the first shift condition is determined. The vehicle further comprises deceleration determination means for determining whether or not the vehicle is decelerating,
The shift condition determining means includes
When the voltage detected by the voltage detection means exceeds a predetermined voltage, the battery determination means determines,
In addition, when the current amount calculated by the current amount calculation means does not exceed the first predetermined current amount and the current amount exceeds a second predetermined current amount that is smaller than the first predetermined current amount, the battery determination means When judged
When the deceleration determination means determines that the vehicle is decelerating, the second shift condition is determined,
The shift control device according to claim 4, wherein the first shift condition is determined when the deceleration determination means determines that the vehicle is not decelerating. The shift condition determining means includes
When the voltage detected by the voltage detection means exceeds a predetermined voltage, the battery determination means determines,
And when the battery determination means determines that the current amount calculated by the current amount calculation means does not exceed the second predetermined current amount,
The shift control apparatus according to claim 5, wherein the second shift condition is determined. The shift condition determining means includes
When the voltage detected by the voltage detection means exceeds a predetermined voltage, the battery determination means determines,
And when the battery determination means determines that the current amount calculated by the current amount calculation means does not exceed a predetermined current amount,
The shift control device according to claim 4, wherein the second shift condition is determined.

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